The Structured Installment Sale, in full.

On a $50M outstanding obligation the applicable percentage is 90%. If deferred tax is $10M and the §6621 rate is 3%, the annual charge ≈ $270,000 — a dollar-for-dollar addition to tax.

The §453B disposition standard

Gain is accelerated only when there is a disposition (or satisfaction at other than face value) of the installment obligation under IRC §453B(a). The governing question is not whether the identity of the payor changes, but whether the seller's installment obligation itself has been disposed of. The IRS and courts apply a "material change in the seller's rights" test — and the preamble to T.D. 8675 (1996) expressly declined to import the §1.1001-3 significant-modification regime into §453B.

Rev. Rul. 75-457 and Rev. Rul. 82-122

• Rev. Rul. 75-457. A buyer's substitution of a new obligor — where the holder's rights are otherwise unchanged — is not a disposition under §453B.
• Rev. Rul. 82-122. Goes further: even a substitution of obligor accompanied by a change in the interest rate is still not a disposition, so long as the holder's fundamental right to principal payments is preserved.

Cunningham v. Commissioner; the private letter rulings

Cunningham v. Commissioner, 44 T.C. 103 (1965), held that a change in the obligor without a change in the holder's substantive rights is not a taxable disposition. PLR 201248008 (2012) and PLR 201144005 (2011) apply these principles to modern facts. (Private letter rulings bind only the requesting taxpayer but are persuasive evidence of the IRS's analytical approach.)

Modifications ruled NOT to be dispositions

Companion doctrine: constructive receipt & the escrow cases

The obligor-substitution rulings answer only half the question — they confirm the buyer can drop out. A separate line of cases governs the other half: the seller must not be able to reach the money. Oden v. Commissioner, 56 T.C. 569 (1971), and Williams v. United States, 219 F.2d 523 (5th Cir. 1955), hold that a seller who could have taken cash but parks it in an escrow they remain entitled to draw on is taxed on the full amount in the year of sale. In an SIS the deferred amount is not placed in an escrow the seller controls; the seller holds only a contractual right to future payments, with no access to the funding asset. Because the seller faces a genuine, substantial restriction (true illiquidity), the constructive-receipt problem is avoided.

The rule: a third party's obligation is "payment"

Under the installment-sale rules, gain is deferred only on amounts not yet treated as payments received. IRC §453(f)(3) and Temp. Reg. §15A.453-1(b)(3)(i) define "payment" to exclude the buyer's own evidence of indebtedness (unless it is payable on demand or readily tradable) — but to include the receipt of an evidence of indebtedness of a person other than the person acquiring the property. In plain terms:

Case anchor — Holmes v. Commissioner, 55 T.C. 53 (1970). The third-party-note rule is not merely regulatory; the Tax Court has applied it directly. In Holmes, the seller took a third party's promissory note as part of the consideration, and the buyer guaranteed it. The court held the note was not an "evidence of indebtedness of the purchaser" under §453(b)(2) of the 1954 Code — the predecessor of today's §453(f)(3) — so its fair market value was a payment received in the year of sale. Critically, the buyer's guarantee did not convert the third-party note into the buyer's own obligation; it bore only on the note's valuation. (The seller's installment election itself survived; only the third-party note was accelerated into year-of-sale income.) Holmes is why a buyer guarantee cannot rescue a mis-sequenced SIS — and why the obligation must originate as the buyer's and then be assumed, the discipline detailed below.

This is why the third-party-note rule is the most serious technical question an SIS must answer. The substitute-obligor authorities above establish that swapping obligors on an existing installment obligation is not a §453B disposition. But §453(f)(3) poses a different and prior question: did the seller ever hold the buyer's obligation at all — or did the seller simply receive an assignment company's obligation at closing, which would itself be a payment in full?

Why the question has teeth in an SIS

The revenue rulings and cases in this chapter — Rev. Rul. 75-457, Rev. Rul. 82-122, Rev. Rul. 74-157, Cunningham — all involved substitution of the obligor on a pre-existing installment obligation, typically well after the original sale. In an SIS, by contrast, the assignment is executed essentially simultaneously with closing. That compression is precisely what gives the third-party-note argument its traction: the IRS could contend that, viewed as a single integrated transaction, the seller never held a buyer obligation for any meaningful moment and instead bargained from the outset for the obligation of the assignment company — a third party — making the entire deferred amount a payment received in the year of sale under §453(f)(3).

The two characterizations, side by side

Two further points reinforce the substitution characterization:

• The annuity is not the seller's security. The standby-letter-of-credit regulation confirms that third-party security for the buyer's obligation is not payment. In a properly built SIS the seller holds no interest in the funding annuity at all — it is owned by the assignment company — so the annuity is neither consideration received nor collateral held. The seller's only asset is the contractual right to the scheduled payments under the assumed installment obligation.
• Secondary liability is the conservative variant. Some practitioners prefer documents under which the buyer is not fully released but remains secondarily liable behind the assignment company. Retained secondary liability makes the obligation easier to defend as remaining "the buyer's" for §453(f)(3) purposes, at the cost of the clean release most buyers negotiate for. Either variant is defensible under the substitution authorities; full release leans harder on the sequencing discipline below.

Sequencing discipline: the drafting consequences

The third-party-note rule converts the deal chronology from best practice into legal necessity. Four drafting rules follow:

1. The installment obligation must be the buyer's in the purchase agreement. The agreement (or installment addendum) must obligate the buyer to make the deferred payments — executed before closing and before the seller has any right to demand the full proceeds.
2. The assignment documents must recite an assumption, not an origination. The non-qualified assignment should expressly recite that the assignment company is assuming the buyer's existing payment obligation under the purchase agreement — language under which the assignment company issues a free-standing promise directly to the seller, untethered to the buyer's obligation, invites the origination characterization.
3. Avoid "novation" terminology. A true novation extinguishes the original obligation and creates a new one — inviting both the §453(f)(3) third-party-note argument and a possible §453B(f) cancellation argument (cancellation of an installment obligation is itself treated as a disposition). The operative concepts are assignment, delegation, and assumption, with the seller's consent and the seller's payment rights preserved unchanged.
4. The seller's rights must run to the payments only. No right against the annuity, no pledge, no acceleration option — the same constraints the constructive-receipt and economic-benefit doctrines impose do double duty here.

A note on the state of the authority

Candor requires acknowledging what the authorities do — and do not — decide. No revenue ruling, regulation, or court decision directly blesses the complete SIS structure: a substitution executed at closing, a full buyer release, and annuity funding, taken together. The structure rests on the convergence of three well-settled bodies of law — the substitute-obligor rulings, the constructive-receipt and economic-benefit boundary, and the third-party-note and security regulations discussed here — each of which the SIS is engineered to stay on the right side of. Carriers and assignment companies proceed on opinions of counsel built from this analogous authority. That is a materially stronger footing than the structures the IRS has actually challenged (monetized installment sales and aggressive trust arrangements), but it is analogous authority nonetheless, and advisors should describe it as such.

Three questions, three bodies of authority

1 · The fragmentation principle: a business sale is a sale of its assets

The starting point is that a going business is not a single asset for federal income tax purposes. Williams v. McGowan, 152 F.2d 570 (2d Cir. 1945), established the fragmentation rule: the sale of a business is "comminuted" into sales of its component assets, each producing its own character of gain or loss. Rev. Rul. 68-13, 1968-1 C.B. 195, applies that principle to the installment context — an installment sale of a business is treated as an installment sale of each individual asset, with the selling price, adjusted basis, and gross profit determined asset by asset. IRS Publication 537 carries the same rule forward operationally: in a business sale, the gross profit percentage is computed separately for each asset (or asset class), and installment income is reported asset by asset on Form 6252, with installment treatment unavailable for the components the Code excludes.

IRC §1060 supplies the allocation architecture: in any "applicable asset acquisition," total consideration is allocated among seven asset classes under the residual method of Reg. §1.1060-1, with goodwill and going-concern value taking the Class VII residual, and both parties reporting the allocation on Form 8594.

How it applies. Fragmentation is what makes the goodwill-designation question meaningful. Because each asset is its own sale, each asset can — in principle — have its own consideration. The question is what happens when the parties don't say which consideration belongs to which sale.

2 · The default rule: pro-rata application of mixed consideration

Where a business is sold for mixed consideration (cash plus a deferred obligation) and the transaction documents do not designate which consideration pays for which asset, the consideration — and each payment as received — is apportioned among the sold assets ratably, in proportion to their relative fair market values. This is the operating assumption of Rev. Rul. 68-13 and of the asset-by-asset reporting regime of Pub. 537 and Temp. Reg. §15a.453-1: absent a specific arm's-length designation, every dollar of cash and every dollar of the note is deemed to purchase a proportionate slice of every asset.

How it applies. The pro-rata default is not seller-friendly. It deems the deferred obligation to have partially purchased the assets whose gain cannot be deferred, and deems the closing cash to have partially purchased the one asset whose gain can be.

3 · Why the default hurts: the assets that cannot wait

Three categories of a typical business sale produce year-of-sale tax regardless of when payments arrive:

Meanwhile, Class VII goodwill — typically the largest allocation in a service business or professional practice, frequently with zero basis (self-created goodwill) and therefore a 100% gross-profit percentage — is the cleanest long-term capital gain in the transaction and the ideal candidate for installment deferral. Under the pro-rata default, a proportionate share of the goodwill is deemed purchased with closing cash, dragging goodwill gain into year one that the structure could have deferred.

The planning logic follows directly: route the cash to the assets whose tax is due immediately, and route the deferred obligation to the goodwill. Under the default rule, the tax law won't do that routing for you. Under a specific designation, it will.

4 · The specific-designation position and its authority

The position that an explicit contractual designation displaces the pro-rata default rests on four converging bodies of authority.

4.1 · Rev. Rul. 68-13 — the pro-rata rule is a default, not a mandate. The ruling treats the installment sale of a business as a sale of individual assets and apportions consideration and payments among them by relative value in the absence of a specific, arm's-length designation. It fills a gap the contract left open. A definitive agreement that speaks — designating particular consideration to particular assets as a bargained term — leaves no gap for the pro-rata rule to fill.

4.2 · IRC §1060(a) and Reg. §1.1060-1(c)(4) — the written allocation binds the parties. The flush language of §1060(a) provides that if the transferor and transferee agree in writing as to the allocation of any consideration, that agreement is binding on both parties — unless the Commissioner determines the allocation is not appropriate. The practical consequence: a goodwill designation is defensible exactly to the extent the underlying §1060 allocation is defensible — the designation inherits the credibility of the appraisal and negotiation behind Schedule 8594.

4.3 · The Danielson and strong-proof rules — the parties are held to their contract. Commissioner v. Danielson, 378 F.2d 771 (3d Cir. 1967), cert. denied, 389 U.S. 858, holds that a taxpayer may disavow the explicit allocation in its own arm's-length agreement only with proof that would permit reformation — fraud, duress, undue influence. Other circuits apply the "strong proof" standard tracing to Ullman v. Commissioner, 264 F.2d 305 (2d Cir. 1959). An explicit, bargained designation is sticky. Adverse interests at the bargaining table — the buyer's amortization interests under §197 versus the seller's character and timing interests — give the designation its evidentiary weight.

4.4 · Economic substance — the designation must describe something real. Substance-over-form, step-transaction, and §7701(o) principles permit the Service to disregard labels that do not match economic reality. The designation survives when the note principal does not exceed the goodwill allocation; the closing statement applies the cash to the non-goodwill classes; the payment waterfall, prepayment, and default provisions are consistent; and nothing routes cash to the seller in a way that contradicts it. A designation is a description of the deal, not a spell cast over it.

5 · Worked example — pro-rata versus designated

Facts. Business sold for $2,000,000: $800,000 cash at closing; $1,200,000 deferred obligation payable $120,000/year for 10 years (plus interest). §1060 allocation: accounts receivable $150,000 (basis $150,000); inventory $250,000 (basis $200,000); FF&E $400,000 (basis $100,000 — entire $300,000 gain is §1245 recapture); goodwill $1,200,000 (basis $0).

Taxed in year one under either approach: $50,000 inventory gain (§453(b)(2)(B)) + $300,000 recapture (§453(i)) = $350,000 of ordinary income, regardless of designation.

The designation moves $480,000 of long-term capital gain out of the year of sale and into the payment years. At a 23.8% federal rate, that is roughly $114,000 of federal tax deferred — and because the gain now arrives in $120,000 annual increments, much of it may be taxed at 15% rather than 20%, and below the NIIT thresholds entirely, converting deferral into permanent rate savings. Meanwhile the $350,000 of unavoidable year-one ordinary income is matched against $800,000 of actual year-one cash: the tax that is due now is paid with money received now.

6 · Drafting the designation

The designation lives or dies in the documents. Four instruments must tell one consistent story: the definitive purchase agreement, the allocation schedule (Form 8594), the deferred-payment instrument (seller note, or the installment addendum in an SIS), and — in an SIS — the non-qualified assignment.

6.1 · Definitive Purchase Agreement. Three clauses do the work: (a) a Purchase Price; Form of Consideration section stating the cash and deferred components; (b) an Allocation of Purchase Price section committing both parties to file Form 8594 consistently with the allocation schedule; and (c) a Specific Application of Consideration section reciting that the Cash Consideration is paid solely for the Purchased Assets other than the Goodwill, that the Seller Note / Installment Obligation is issued solely as consideration for the Class VII Goodwill, and that all payments of principal under the deferred instrument shall be treated by the parties as payments made exclusively with respect to the Goodwill.

6.2 · Seller Note (conventional seller financing). The note itself should recite that it is issued solely as consideration for the Goodwill, and that all payments of principal shall be treated by Maker and Holder as payments with respect to the goodwill and going concern value, consistent with the specific-application section of the Purchase Agreement.

6.3 · SIS variant — the installment addendum and the non-qualified assignment. In an SIS, the deferred obligation is born as the buyer's installment obligation in the purchase agreement (or installment addendum) and is then assumed by the assignment company — the sequencing discipline of Chapter 4. The goodwill designation rides the same rails: the installment addendum designates the buyer's Installment Obligation as the sole consideration for the Class VII Goodwill, executed before closing and before the seller has any right to the proceeds. The non-qualified assignment recites that the assignment company is assuming the buyer's existing Installment Obligation under the Purchase Agreement — carrying the designation with it. Size the structured amount to the goodwill allocation: the structured/deferred portion of the price is set at (or comfortably inside) the Class VII figure, with the cash portion covering Classes I–VI.

6.4 · Collateral is a separate question. Security is credit support, not consideration. A seller note may be secured by a blanket lien on all business assets without undermining the goodwill designation — but any recital in the security agreement about what the note financed should echo the specific-application clause rather than contradict it. In an SIS, the point is largely moot: the seller holds no security interest at all.

7 · Guardrails and red flags

• The obligation cannot exceed the goodwill allocation. A $1.5M note designated to $1.2M of Class VII goodwill is internally inconsistent and re-invites pro-rata treatment for the excess — or worse, for the whole.
• The designation must be contemporaneous. In the definitive documents, negotiated pre-closing. A designation appearing first in a post-closing amendment, side letter, or on the return itself has little weight — and in an SIS, late papering also collides with the constructive-receipt timeline.
• Both parties report consistently. Matching Forms 8594; the seller's Form 6252 reflecting goodwill-only installment gain; no buyer position treating note payments as purchasing anything else.
• Every money-flow provision must agree. Closing statement, escrow instructions, payment waterfall, prepayment and default provisions — one inconsistent clause is the examiner's opening.
• Separate the covenant and consulting agreements — and state explicitly how each is paid. Silence is the failure mode: an undesignated covenant invites both pro-rata contamination of the goodwill obligation and re-characterization of note payments as disguised Class VI consideration. See The Covenant Question.
• Recapture is due in year one no matter what. The designation does not defer §453(i) recapture or inventory gain — it ensures the cash that pays that tax actually arrived. Model the year-one liability before setting the cash/deferred split.
• Mind the standing screens. Related-party rules (§453(e), §453(g)); the §453A interest charge if deferred obligations exceed $5M at year-end; contingent-price features (earnouts) that complicate the gross-profit computation under Temp. Reg. §15a.453-1(c) and are best kept out of the goodwill-designated obligation.
• State conformity. The federal designation analysis does not answer state sourcing, conformity, or withholding questions — see the State Tax Center before closing.

8 · A note on the state of the authority

Candor requires the same acknowledgment Chapter 4 makes about the SIS itself. No revenue ruling, regulation, or court decision squarely holds that a designation tying a particular form of consideration to a particular asset displaces the pro-rata default in an installment sale of a business. The position rests on the convergence of well-settled principles: fragmentation (Williams v. McGowan; Rev. Rul. 68-13); the gap-filling character of pro-rata apportionment; the statutory binding effect of written allocation agreements (§1060(a); Reg. §1.1060-1(c)(4)); the Danielson/strong-proof doctrines; and the ordinary respect accorded arm's-length allocations with economic substance. The Commissioner is never bound by the parties' agreement and can challenge an allocation that does not reflect fair market value — which is why the designation is only as strong as the appraisal work and adverse-interest negotiation behind it. Practitioners should describe the position as well-grounded convergent authority, implemented through drafting discipline, rather than as the subject of a direct ruling.

1 · What the covenant is — and is not — for federal tax purposes

A covenant not to compete entered into in connection with a business sale is a separate bargain: the seller's promise to forbear from competing, in exchange for stated consideration. Its tax attributes are asymmetric between the parties:

The 15-year amortization rule makes the covenant relatively unattractive to buyers (goodwill amortizes over the same 15 years), while the ordinary-income character makes it unattractive to sellers relative to goodwill. The predictable result is downward pressure on covenant allocations — and predictable IRS scrutiny of allocations that price a genuinely valuable covenant at zero. The allocation must reflect the covenant's real economic substance: an enforceable restriction, a seller who poses a genuine competitive threat, and a price a hostile party would recognize as bargained.

2 · The eligibility question: does §453 apply to covenant consideration?

This is the contested core of the chapter, and candor requires presenting both positions in full.

2.1 · The traditional position — no §453 eligibility. §453(b)(1) defines an installment sale as "a disposition of property where at least 1 payment is to be received after the close of the taxable year." A covenant is not property the seller owned and disposed of; it comes into existence at closing as the seller's promise to forbear. This is the same analytical root as the settled ordinary-income character — the case law's covenant-versus-goodwill dichotomy is built precisely on the line between transferred property and personal promise. Under this view, Reg. §1.1060-1(b)(7)'s deeming rule is confined to its purpose: it operates within the §1060 allocation regime and does not purport to interpret §453(b)(1)'s "disposition of property" threshold.

2.2 · The asset-sale position — §453 eligibility. Reg. §1.1060-1(b)(7) provides: "If, in connection with an applicable asset acquisition, the seller enters into a covenant (e.g., a covenant not to compete) with the purchaser, that covenant is treated as an asset transferred as part of a trade or business." Reg. §1.1060-1(c)(1) then defines the seller's consideration as the amount realized from selling the assets under §1001(b) — disposition vocabulary applied to an asset pool the covenant is deemed to inhabit. And §453(b)(2)'s exclusion list does not mention covenants. If the covenant is a deemed-transferred asset of the trade or business, its deferred consideration is reportable under §453 unless some exclusion applies. The position is textually grounded, but it rests on carrying a §1060 fiction across a section boundary that no ruling, regulation, or court decision has carried it across. A caveat cuts in its favor: ordinary character alone does not disprove a property transfer (Hort v. Commissioner, 313 U.S. 28 (1941), taxed a lease-cancellation payment as ordinary income even though a lease is unquestionably property), so the character cases narrow, but do not close, the door.

2.3 · Not in dispute. The character of covenant consideration is ordinary income to the seller under either position; the buyer amortizes under §197 over 15 years under either position; and no authority squarely resolves the installment-eligibility question. Advisors should present it as a reasoned, disclosable position — not as settled law in either direction.

3 · The practical bridge: timing without winning the debate

For most sellers, the eligibility debate never has to be resolved, because a cash-method seller reports deferred covenant consideration as payments are received under ordinary method-of-accounting principles — the same timing result §453 would deliver — provided the deferred obligation is properly built. Covenants are almost always personal to the individual owner (an entity cannot promise its shareholder's forbearance), and individuals are almost always cash-method, so the as-received path is nearly always available.

Two doctrines patrol that path:

• Cash equivalency (Cowden v. Commissioner, 289 F.2d 20 (5th Cir. 1961)). A deferred-payment promise that is negotiable, readily marketable, secured, and of a solvent obligor can be treated as the equivalent of cash — income at fair market value on receipt. A deferred covenant instrument should therefore be unsecured, non-negotiable, and expressly non-transferable.
• Economic benefit. Consideration that is funded and irrevocably set aside for the seller — escrowed, or annuity-funded — can be income when funded rather than when paid. A deferred covenant obligation should remain the buyer's unfunded, unsecured contractual promise.

Where the §453 position earns its keep. The eligibility debate matters precisely where those doctrines bite. If the covenant note must be secured or is arguably negotiable, the §453 position (if sustained) protects the seller more robustly than cash-method doctrine does: under §453(f)(3) and Temp. Reg. §15A.453-1(b)(3), the buyer's own evidence of indebtedness is not "payment" unless payable on demand or readily tradable — regardless of security. The sensible engagement posture is layered: as-received cash-method reporting as the primary position, with the Reg. §1.1060-1(b)(7) installment analysis documented as the alternative ground.

4 · The SIS consequence: keep the covenant out of the structured amount

The expected-value arithmetic is lopsided: including the covenant in the structured amount gains nothing (the seller could defer the same dollars under a separate as-received instrument, or simply take them in cash against the year-one ordinary tax), while risking full acceleration of the covenant slice if the eligibility position fails. The design rule follows: covenant consideration is separately priced and lives either in cash at closing or in its own separate deferred instrument between buyer and seller — never inside the goodwill-designated obligation, and never inside the SIS structured amount.

5 · Drafting the covenant

Three instruments must stay consistent: the definitive purchase agreement (which should recite that the covenant is separately bargained and separately paid), the covenant agreement itself, and — if the consideration is deferred — the covenant payment instrument.

5.1 · Non-Competition Agreement. Recite that the Non-Competition Agreement is entered into as a separately bargained agreement in connection with, but independent of, the Purchase Agreement; that the consideration is paid solely in exchange for the covenants and is separately allocated on Schedule 8594 as a Class VI asset; and that it does not constitute consideration for the Purchased Assets, the Goodwill, or any other asset conveyed under the Purchase Agreement.

5.2 · Deferred covenant consideration — the payment instrument. If the covenant consideration is deferred, the instrument should be engineered against the two timing doctrines of Section 3: it should recite that Buyer's obligation is a general, unsecured contractual obligation, that the instrument is not secured, not negotiable, and non-transferable, and that no amount payable has been or shall be funded, escrowed, or otherwise set aside for the benefit of Covenantor. The tax-treatment clause should state that Covenantor reports amounts as ordinary income as and when received, and Buyer amortizes under §197.

5.3 · What the purchase agreement must say. The purchase agreement's specific-application clause (see The Goodwill-Designation Question) should carve the covenant out expressly — the cash and the goodwill-designated obligation are consideration for the Purchased Assets other than the covenant, and the covenant consideration is paid exclusively under the Non-Competition Agreement. Silence is the failure mode.

6 · Guardrails and red flags

• Price the covenant at its real value — in both directions. The IRS scrutinizes allocations that assign nothing to a genuinely valuable covenant (inflating goodwill) and allocations that inflate a covenant from a seller who poses no realistic competitive threat. Economic substance — enforceability under state law, geographic and temporal reasonableness, a seller actually capable of competing — is what sustains the number.
• Keep the covenant and consulting agreements separate from each other. Both are ordinary income, but consulting is SECA-taxed compensation for services and will be tested against services actually rendered; a covenant is forbearance. Blending them invites the worst characterization of both.
• If deferred: unsecured, non-negotiable, non-transferable, unfunded. Every element is doing doctrinal work against Cowden cash-equivalency and the economic-benefit doctrine.
• Never inside the goodwill-designated obligation; never inside the SIS structured amount. The asymmetric-risk logic holds under either eligibility position.
• Report consistently. Class VI on both Forms 8594; the seller's ordinary-income reporting matching the instrument's as-received schedule; the buyer's §197 amortization over 15 years regardless of the covenant's stated term.
• Mind the FTC landscape on enforceability. The federal and state law governing non-compete enforceability continues to shift; an unenforceable covenant is an unpriceable one. Coordinate with counsel in the governing jurisdiction.

7 · A note on the state of the authority

The character rule is as settled as anything in this area: covenant consideration is ordinary income, on a covenant-versus-goodwill dichotomy the courts have maintained for seventy years. The installment-eligibility question, by contrast, is unresolved at the threshold. The asset-sale position rests on the text of Reg. §1.1060-1(b)(7) and (c)(1) and the silence of §453(b)(2); the traditional position rests on §453(b)(1)'s "disposition of property" threshold, the confined purpose of the §1060 deeming rule, and the transfer-versus-promise logic of the character cases — with Hort standing as a caution that ordinary character alone does not decide the property question. No ruling or case carries the §1060 fiction into §453, and none rejects it. Advisors should describe the eligibility position as reasoned and textually grounded but contested — and should note that the practical stakes are modest for cash-method sellers, because as-received reporting under a properly drafted separate instrument reaches the same timing without resolving the debate. The one place the debate is never worth running is inside the SIS structured amount, where losing it accelerates the entire covenant slice.

1 · The statutory ordering: §453(c) and the gross-profit percentage

IRC §453(a) makes the installment method the default rule for any installment sale, and §453(c) defines the method itself: the income recognized for any taxable year is "that proportion of the payments received in that year which the gross profit … bears to the total contract price." Temp. Reg. §15A.453-1(b)(2) carries the formula through its defined terms — selling price, contract price, gross profit — and Temp. Reg. §15A.453-1(b)(3) defines payments.

Three consequences follow directly from the text:

• The gross-profit percentage (GPP) is computed once, at sale, and applies to every principal payment for the life of the obligation.
• Every payment is bifurcated identically: gain equals payment × GPP; basis recovery equals payment × (1 − GPP). There is no residual category, no ordering election, and no mechanism by which a payment can be designated all-basis or all-gain.
• The statute speaks in proportions, not sequences. Nothing in §453, the temporary regulations, or Form 6252 permits a taxpayer to sequence basis ahead of gain.

The pro-rata rule is the method. A seller who wants a different ordering is not asking for a variation on the installment method — they are asking for a different doctrine (Part 4).

2 · Scenario one: closing cash equal to basis

The proposition. Seller's basis is $400,000. Seller retains $400,000 of cash at closing, treats it as tax-free basis recovery, and defers all gain into the note.

Why it fails. The closing cash is a payment received in the year of sale under Temp. Reg. §15A.453-1(b)(3)(i). Year-of-sale payments enjoy no special character — they are simply the first entries in the payment stream, and §453(c) applies the GPP to them like any other. On the facts above, if the total price is $1,000,000 (GPP = 60%), the $400,000 of closing cash produces $240,000 of recognized gain in the year of sale; only $160,000 of it is basis recovery. The seller's remaining basis ($240,000) is then recovered ratably across the note payments — still at the fixed 40% rate per dollar.

Note that the trap runs in both directions. Sellers sometimes reason that because the closing cash "equals basis," the year-one tax is zero and size their liquidity accordingly — then discover in April that the down payment generated a six-figure gain (on top of any §453(i) recapture, which is recognized in full in year one regardless of payments — see Chapter 3). Modeling the year-one liability against the year-one cash is a core SIS design step, and it must be modeled pro-rata.

3 · Scenario two: basis-first recovery across the note payments

The proposition. Same facts, but the seller instead reports the first note payments as pure basis recovery until the $400,000 is exhausted, with gain recognized only on payments received thereafter.

Why it fails. This is the classic "cost recovery method," and within §453 it simply does not exist. The GPP is a constant, and Form 6252 mechanically applies it: line-by-line, each year's installment income equals principal payments received × GPP. A return position that reports early payments at a 0% gain rate and later payments at an elevated rate is not an aggressive application of the installment method — it is a departure from it, unsupported by any provision of §453 or the regulations, and it will not survive the arithmetic of the seller's own Forms 6252 (which require the GPP to be stated and carried forward each year).

Why the intuition persists. The basis-first instinct is not irrational — it is imported from neighboring regimes where basis genuinely does come back first: corporate distributions in excess of earnings and profits recover stock basis before producing gain (§301(c)(2)–(3)); partnership distributions apply against outside basis before gain (§731(a)(1)); and open-transaction sellers under Burnet v. Logan recover full basis before reporting anything. None of those regimes governs an installment sale of assets. §453 chose proportion over sequence, and it did so deliberately — a basis-first rule would convert every installment sale into an interest-free deferral of the entire gain to the back of the schedule.

4 · The doctrine sellers are reaching for: Burnet v. Logan and the open transaction

A true basis-first recovery method does exist in the tax law — the open-transaction (cost recovery) doctrine of Burnet v. Logan, 283 U.S. 404 (1931). Where the consideration received has no ascertainable fair market value, the transaction remains "open": the seller applies each payment against basis first and reports gain only after basis is fully recovered.

Its modern scope is deliberately narrow, and it is doubly unavailable to the ordinary installment seller:

• It requires electing out of §453. A seller within the installment method never reaches open-transaction treatment; the contingent-payment regulations of Temp. Reg. §15A.453-1(c) occupy the field (Part 5). Open-transaction analysis arises only for a seller who affirmatively elects out under §453(d) and then contends the obligation received cannot be valued.
• Even then, it is confined to "rare and extraordinary" cases. Temp. Reg. §15A.453-1(d)(2)(iii) provides that only in rare and extraordinary circumstances will the fair market value of a contingent payment obligation be treated as unascertainable — and warns that a contingent obligation is never treated as valueless merely because its value is uncertain. The regulation's stated design, echoing the legislative history of the Installment Sales Revision Act of 1980, is to shrink Logan to a vestige.
• A fixed-amount note can never qualify. An obligation with a stated principal amount, a schedule, and a solvent obligor has an ascertainable value by definition. The open-transaction door is closed to every garden-variety installment sale — and to every SIS, whose structured obligation is fixed, scheduled, and insurer-funded precisely so that it is determinable.

And electing out doesn't help anyway. A seller who elects out of §453 on a fixed note doesn't achieve basis-first recovery — they achieve the opposite: the note is valued (generally at face or fair market value) and the entire gain is closed into the year of sale under §1001. Election out is the acceleration path, not the deferral path.

5 · The closest sanctioned analog: ratable basis recovery in contingent-payment sales

Congress addressed the contingent-consideration problem inside §453. Section 453(j)(2) directs Treasury to provide that, where the aggregate selling price cannot be determined at sale, basis is recovered ratably — and Temp. Reg. §15A.453-1(c) supplies the hierarchy:

Two observations matter for present purposes. First, even in the one context where §453 tolerates basis allocation untethered from a fixed GPP, the allocation is ratable — spread evenly — never front-loaded. Second, the escape valve of (c)(7) runs through a private ruling, not a return position. The regulatory architecture is uniformly hostile to self-help basis acceleration.

(Earnouts and other contingent features are, for exactly this reason, best kept out of the SIS structured amount — the fixed-schedule obligation keeps the GPP computation clean. See Chapter 2.)

6 · The mirror-image trap: liabilities in excess of basis

The pro-rata machinery contains one asymmetry sellers should know, because it is the inverse of the basis-first hope. Under Temp. Reg. §15A.453-1(b)(2)(iii) and (b)(3)(i), qualifying indebtedness assumed by the buyer reduces the contract price only to the extent of the seller's basis. Where assumed debt exceeds basis:

• the excess is treated as a payment received in the year of sale, and
• because contract price now equals gross profit, the GPP becomes 100% — every subsequent dollar of cash and principal is pure gain, with no basis component at all.

An over-leveraged asset thus produces the mirror image of the question this chapter answers: rather than basis coming back first, basis is absorbed entirely by the debt relief and gain comes back on every payment. For refinanced real estate and leveraged business assets, this screen belongs at the top of the SIS eligibility analysis.

7 · Worked example — the wished-for treatment versus the law

Facts. Asset sold for $1,000,000; adjusted basis $400,000; no recapture, no assumed debt. Consideration: $400,000 cash at closing + $600,000 installment obligation paid $60,000/year for 10 years (plus adequate stated interest). Gross profit $600,000; contract price $1,000,000; GPP = 60%.

The totals converge — the character and amount of gain are identical — but the timing difference is the entire dispute, and the timing belongs to the statute. Note also what the pro-rata rule gives the seller: unlike a basis-first regime (which would make the final payments 100% gain), every payment to the last one carries a tax-free basis component.

8 · What actually works: the legitimate levers

The planning objective behind the basis-first question is sound — cover the taxes due now with cash received now, and spread the clean gain across the schedule. §453 provides three sanctioned routes to it:

• Asset-by-asset gross-profit computation. Under Rev. Rul. 68-13 and Pub. 537, a business sale is an installment sale of each asset, with a separate GPP per asset. High-basis assets (receivables at face, recently purchased inventory or equipment) have low or zero GPPs; zero-basis goodwill has a 100% GPP. The blended result can approximate what the seller wanted from basis-first ordering — legitimately.
• Specific designation of consideration. Routing the closing cash to the high-basis, immediately-taxed classes and the deferred obligation exclusively to Class VII goodwill concentrates the deferral where the GPP is highest and pays the year-one tax with year-one cash. The authority, drafting discipline, and worked example are the subject of The Goodwill-Designation Question.
• Payment-schedule design. Gain follows payments, and payments are what the schedule controls. A smaller down payment, a deferred start, or a longer term all reduce near-term recognition — pro-rata, but on fewer near-term dollars. Within an SIS the schedule is engineered before closing (Chapter 2); the constraint is that it must be fixed and irrevocable at closing, and the down payment must still be sized to the modeled year-one liability, including §453(i) recapture.

What none of these do — and what nothing in §453 does — is change the ratio applied to any given payment.

9 · Guardrails and red flags

• Never model the down payment as tax-free basis recovery. The year-one liability equals (year-of-sale payments × GPP) + §453(i) recapture + tax on any inventory or other excluded-asset gain. Size the cash at closing to that number.
• Reject any structure marketed on basis-first ordering. A promoter describing an installment or "structured" arrangement in which "you receive your basis back tax-free first" is describing a method §453 does not contain. The claim is a diligence red flag of the same family as monetization pitches (Chapter 6).
• Do not attempt open-transaction reporting on a fixed obligation. Logan treatment requires an election out of §453 plus a genuinely unascertainable consideration value — a standard the regulations confine to rare and extraordinary cases and that a stated-amount, insurer-funded obligation can never meet.
• Screen for debt in excess of basis early. It converts the GPP to 100% and deems a year-one payment — the opposite of the deferral profile the seller is designing for.
• Keep contingent features out of the structured amount. Earnouts pull the transaction into the Temp. Reg. §15A.453-1(c) ratable-recovery regime and complicate the GPP; if the deal needs an earnout, house it in its own instrument outside the SIS.
• Report consistently. The GPP stated on the year-of-sale Form 6252 governs every subsequent year's form; a mid-stream change in the ratio (absent a selling-price adjustment) is an audit flag, not a planning technique.

10 · A note on the state of the authority

Unlike the substitute-obligor and goodwill-designation questions, this one is not a matter of convergent analogous authority — it is answered directly by the statute and regulations. §453(c) states the proportionate rule; Temp. Reg. §15A.453-1(b) implements it; §453(j)(2) and Temp. Reg. §15A.453-1(c) confirm that even contingent-consideration basis recovery is ratable, never front-loaded; and Temp. Reg. §15A.453-1(d)(2)(iii) confines the one genuine basis-first doctrine (Burnet v. Logan) to rare and extraordinary cases outside the installment method entirely. Practitioners can state the conclusion without hedging: within §453, basis-first recovery is not an available position, and the planning energy belongs in asset-level allocation, designation, and schedule design.