The definitive educational resource for sellers and advisors
Compare strategies · IRC §453 in context
The SIS against every other deferral tool.
Every capital-gains strategy trades something off — liquidity, certainty, complexity, or who carries the risk. Filter the table to the option you're weighing; a profile of that alternative appears beneath it.
Compare vs
Dimension
Structured Installment Sale
§1031 Exchange
Opportunity Zone
Deferred Sales Trust
Monetized Installment Sale
Charitable Remainder Trust
Plain seller note
Taxable lump sum
Asset eligibility
Broad capital assets
Real property only
Capital gains → fund
Broad
Broad
Broad
Broad
Any
Liquidity
Low — illiquid by design
Low (in property)
Low (10-yr hold)
Low–moderate (trust income)
High (loan against note)
Income only
Low
Highest
Income stream
Guaranteed, periodic
Property cash flow
Fund distributions
Trust distributions
Loan now + installments
Annuity / unitrust
Note payments
None
Credit / payment risk
Insurer-backed; very low
Market / tenant
Market risk
Trust investment risk
Lender + tax risk
Trust investments
Buyer default risk
N/A
Complexity
Moderate
Moderate
High
High
High
High
Low
Lowest
Cost to parties
Often none (insurer pays consultant)
QI & fees
Fund fees
Trustee / legal fees
Lender / setup fees
Trustee / legal
Minimal
None
Legal certainty
High — settled §453
High (statutory)
High
Moderate — IRS scrutiny
Very low — listed transaction
High
High
High
Business-sale fit
Strong
No (real property only)
Limited
Possible
High risk
Possible
Yes
Yes
Alternative
§1031 Like-Kind Exchange
What it is
A tax-deferred swap of one piece of investment or business real property for another of like kind, governed by IRC §1031.
How it defers tax
Gain is rolled into the replacement property's basis; no tax is recognized until the replacement is sold without another exchange.
Best fit
Real-estate investors who want to stay invested in real estate and have a specific replacement property identified within 45 days and closed within 180.
Trade-offs
Real property only; strict timing; requires a qualified intermediary; deferred gain remains attached to the new property; depreciation recapture isn't eliminated.
How SIS differs
SIS works for almost any capital asset — not just real estate — and doesn't require buying a replacement. Instead of carrying gain into another property, the SIS converts the gain into insurer-backed periodic income.
Alternative
Opportunity Zone Fund
What it is
An investment vehicle that places eligible capital gains into a Qualified Opportunity Fund deploying capital in designated low-income census tracts.
How it defers tax
Recognized gain reinvested within 180 days is deferred until 2026; appreciation inside the fund is tax-free if held at least 10 years.
Best fit
Investors with realized capital gains who can accept a long, illiquid hold in a higher-risk development project.
Trade-offs
Fund-level risk and fees; sponsor and execution risk; deferral period is fixed and shrinking; the underlying property has to actually perform.
How SIS differs
SIS doesn't ask the seller to take development or equity risk. Payments are fixed, guaranteed by a regulated life insurer, and predictable for budgeting — there is no fund to underwrite.
Alternative
Deferred Sales Trust (DST)
What it is
A promoter-marketed structure in which sale proceeds are routed into a third-party trust that invests the funds and pays the seller over time.
How it defers tax
Promoters argue the seller has only an installment obligation from the trust, not constructive receipt — so gain is reported as trust payments arrive.
Best fit
Sellers willing to accept IRS scrutiny and ongoing trust-administration cost in exchange for marketed flexibility on the investment side.
Trade-offs
No published IRS blessing; aggressive variants have drawn enforcement attention; trustee fees, legal fees, and investment risk inside the trust; thin guaranty if the trust under-performs.
Promoter risk
Some promoters market DSTs with “flexible” payout schedules and unplanned lump-sum access. That post-closing control is hard to square with constructive-receipt doctrine and invites IRS recharacterization — treating the seller as in receipt of the full proceeds at closing, collapsing the deferral.
How SIS differs
SIS operates squarely under §453 with a half-century of authority behind the substitute-obligor mechanic. Payments come from a regulated, state-supervised insurer — not a trustee picking investments.
Alternative
Monetized Installment Sale
What it is
An §453 installment sale paired with a non-recourse loan against the note, putting most of the sale proceeds in the seller's hands at closing.
How it defers tax
The seller reports gain on the installment method as note payments arrive, while a parallel loan provides immediate liquidity.
Best fit
Marketed to sellers who want both §453 deferral and lump-sum cash — a combination the IRS views skeptically.
Trade-offs
IRS has proposed treating it as a listed transaction (REG-109348-22); DOJ has pursued promoters; reporting and disclosure obligations; meaningful audit and recharacterization risk.
How SIS differs
SIS accepts real illiquidity in exchange for clean, settled §453 treatment. It doesn't try to manufacture upfront cash, which is exactly why it stays out of the listed-transaction crosshairs.
Alternative
Charitable Remainder Trust (CRT)
What it is
An irrevocable split-interest trust that holds the appreciated asset, pays the seller (or named beneficiaries) an income stream, and leaves the remainder to charity.
How it defers tax
The trust is tax-exempt and can sell the asset without immediate gain recognition; the seller is taxed as distributions are received under the four-tier ordering rules.
Best fit
Sellers with genuine charitable intent who want lifetime income plus a partial up-front charitable deduction.
Trade-offs
Irrevocable — the remainder really does go to charity; trustee, legal, and investment costs; income depends on trust performance; complex annual administration.
How SIS differs
SIS keeps the full economic value with the seller and the seller's heirs. No charitable remainder, no trustee, no investment risk on the seller's income — just fixed insurer payments.
Alternative
Plain Seller-Financed Note
What it is
A traditional installment sale where the buyer signs a promissory note directly to the seller and pays principal and interest over time.
How it defers tax
Gain is reported under IRC §453 as the buyer's principal payments are received; interest is taxed as ordinary income as it accrues.
Best fit
Sellers who know and trust the buyer, want to keep the deal simple, and are comfortable acting as the lender themselves.
Trade-offs
Buyer default risk falls entirely on the seller; no insurer guaranty; collection, servicing, and any workout are the seller's problem; payments only as reliable as the buyer's business.
How SIS differs
SIS keeps the §453 deferral but moves the obligation to a regulated life insurer, so payments don't depend on the buyer staying solvent. The seller is out of the credit-and-collection business at closing.
Alternative
Taxable Lump Sum
What it is
A conventional closing — the buyer pays in full, the seller takes the proceeds, and the entire gain is reported in the year of sale.
How it defers tax
It doesn't. Federal capital-gains tax, NIIT, and any depreciation recapture are all paid up front; reinvestment happens with after-tax dollars.
Best fit
Sellers with an immediate, large use of cash (debt payoff, business reinvestment) or whose total gain is small enough that bracket-management has little value.
Trade-offs
Largest current-year tax bill; pushes the seller into top brackets and triggers NIIT; loses the time-value benefit of paying tax over years instead of all at once.
How SIS differs
SIS spreads the same gain across the chosen term, often keeping the seller in lower brackets and below NIIT thresholds — and the deferred tax dollars stay invested inside the annuity instead of going to the IRS at closing.
The SIS should not be confused with two distinct strategies it is sometimes mistaken for. A Deferred Sales Trust routes the sale proceeds into a third-party trust that invests them and pays the seller over time; its aggressive forms draw IRS scrutiny. A Monetized Installment Sale instead pairs §453 deferral with a loan against the note to put cash in the seller's hands up front — the IRS has proposed treating it as a listed transaction (REG-109348-22) and the DOJ has pursued its promoters. A legitimate SIS is neither: it accepts genuine illiquidity in exchange for its settled tax treatment.
Next step
Weighed the trade-offs? Now run your numbers.
The table tells you which tool fits the job; the calculator tells you what it's worth in dollars.
