The Internal Revenue Code — SIS Authority

Section 453 is the statutory starting point for installment recognition. A qualifying SIS uses those rules for the seller’s payment right, while the assignment company’s funding is a separate asset. No affirmative installment election is generally required; the taxpayer must report consistently and avoid electing out inadvertently. At least one payment after the sale year is necessary, but not sufficient: recapture, exclusions, deemed payments, interest, receipt doctrines, and later dispositions must also be evaluated.

This is the inverse safeguard. Because §453 is automatic, the SIS seller must simply not elect out. A seller who wants full deferral must avoid an inadvertent election-out (e.g., by reporting the full gain on Form 8949/4797 instead of filing Form 6252). It also means the deferral decision is effectively locked at the first return.

A planning pitfall, not a structural bar. Most SIS transactions involve an unrelated, arm's-length buyer, so §453(e) is not triggered. But if an SIS were used to sell to a family member or controlled entity, a resale within two years would collapse the deferral. Advisors screen for this before structuring.

Screen depreciable-property sales to the specified related persons before designing an SIS. The general bar applies regardless of insurer funding, but the statute contains a tax-avoidance-purpose exception that must be established on the facts. Do not describe the rule as categorical while omitting that exception.

A crucial limitation on how much gain an SIS can defer. For a depreciated commercial building or equipment, the §1245/§1250 recapture is taxed up front in the year of sale even though the seller receives no cash for it that year. Only the remaining capital gain flows into the annuity-funded installment stream. For heavily cost-segregated real estate, this can be a substantial non-deferrable slice. Note: unrecaptured §1250 gain (the straight-line component, max 25% rate) is not §453(i) recapture and can be deferred.

Defines an excluded asset class. An SIS cannot be used to defer gain on publicly traded stock — a common point of confusion. It is available for privately held business interests, real estate, and other non-traded capital assets. This is one reason the SIS is marketed to sellers of closely held businesses and investment real estate rather than to public-market investors.

Dealer status is an important eligibility screen, with specific statutory exceptions for qualifying farm property and certain timeshares or residential lots. Do not assume every developer lot sale is categorically excluded or that every investment asset is automatically acceptable to an SIS provider. Determine tax eligibility and product acceptance separately.

Two distinct effects:

1. Cost of deferral on large deals. Track each sale-year group separately and carry its established applicable percentage into later calculations. Changes in deferred tax and the applicable interest rate affect the charge. For an individual, the §453A charge is nondeductible personal interest (§163(h); Temp. Reg. §1.163-9T(b)(2)(i)(A), which reaches the charge as interest on an underpayment of income tax; Carlson v. Commissioner, 112 T.C. 240 (1999)); a C corporation is outside §163(h) and may generally deduct it. Model it separately from the contractual interest paid by the buyer.
2. The pledge rule is the firewall against monetization. Because borrowing against the installment obligation is itself treated as a payment, a bona fide SIS seller cannot quietly turn the deferred stream into present cash. This is precisely the line that abusive "monetized installment sales" tried to cross — and it is why a legitimate SIS requires genuine illiquidity.

Threshold planning: TAM 9853002 is commonly cited for separate treatment of married individuals’ $5 million thresholds. A TAM is nonprecedential. Confirm actual ownership and the taxpayer to whom each obligation belongs; merely splitting payees or transferring a note is not a substitute for ownership analysis and can raise its own §453B issues.

Section 453B is central to the obligor-substitution analysis: did the seller dispose of the receivable, or retain substantially the same installment obligation after an assumption? The cases and rulings support substitution on their facts, with other changes requiring review. Subsection (e) concerns dispositions of a receivable to a life insurer and restricts nonrecognition of resulting gain, subject to an exception. It does not by itself prohibit a life insurer from assuming a debtor’s payment duty or conclusively explain the use of a separate assignment company.

T.D. 8675’s preamble confirms that an exchange under the §1001 debt-modification rules does not by itself determine the §453B result. This preserves the need to apply the installment-obligation cases and rulings to the actual changes. The standards are different; describing one as universally gentler or saying every change of obligor is immaterial overstates the conclusion.

§130 is categorically unavailable to the SIS, because an SIS arises from the sale of property/a business — not a physical-injury tort claim — and the seller's payments are taxable capital gain/interest, not §104 excludable damages. The SIS therefore uses a non-qualified assignment (NQA), which operates "§130-like" in mechanics (assignment company assumes the obligation, funds it with an annuity it owns) but without §130's company-level tax exclusion. The NQA structure — and its prohibition on the seller's right to accelerate, demand, or assign payments — is what preserves both §453 installment treatment and the no-constructive-receipt requirement.

The seller’s installment gain is generally computed under §453 rather than an annuity exclusion ratio because the seller does not own the funding annuity. The assignment company must separately establish its own tax treatment. If it relies on the immediate-annuity exception, the statutory purchase, commencement-within-one-year, and payment conditions matter; a deferred-start product cannot simply assume that exception. A funding agreement may require a different analysis. Keep the seller’s receivable, the company’s funding asset, and each taxpayer’s recognition rules distinct.