Content reviewed October 17, 2026 · Educational reference
A practical path from eligibility check to ongoing reporting — plus due diligence and red flags.
Setting up an SIS is methodical. Confirm the asset qualifies, assemble your team, model the tax both ways, write the installment language into the purchase agreement before you have any right to the cash, design the schedule, execute the non-qualified assignment, fund the selected contractual arrangement, close and transfer title, then file Form 6252 every year.
Step-by-step setup
- Confirm eligibility. Verify §453 applies; identify any §1245/§1250 recapture and related-party issues.
- Assemble the team. An SIS specialist, the seller's CPA or tax attorney, and the closing/escrow agent.
- Model the tax. Run lump-sum vs. SIS under realistic income projections; quantify NIIT, interest, and any §453A charge.
- Structure the purchase agreement. Insert installment-sale language before the seller has any right to proceeds.
- Design the schedule. Choose product-permitted term, start date, closing cash, step-ups, and balloons; verify beneficiary and death-acceleration terms.
- Execute the non-qualified assignment. Confirm the assumption, acceptance, seller’s payment rights, buyer fallback or release, and restrictions on assignment, pledging, and acceleration in the actual contracts.
- Arrange funding. Confirm the approved annuity or funding agreement, issuing entity, current financial strength, contractual guarantees, and funds-flow instructions.
- Close & transfer title. The seller receives any agreed closing lump sum (taxable that year).
- Begin payments. The insurer pays on schedule.
- Report annually. File Form 6252 each year; track the GPP and any §453A charge.
Due-diligence checklist
- Confirm the asset qualifies; identify all §1245/§1250 recapture and related-party issues.
- Assess §453A using qualifying sale-year obligations outstanding at that year-end; check the $150,000 sale threshold, $5 million interest-charge threshold, fixed group percentage, and farming/personal-use exceptions. Analyze the pledge rule separately.
- Model current-year tax under both scenarios; project income across the SIS period; quantify NIIT and ordinary tax on interest.
- Execute the installment addendum before closing; select a life insurer whose rating agency, rating and rating date are identified (ratings differ by agency; see Chapter 8); review rate, schedule, beneficiaries.
- Confirm buyer cooperation; decide partial vs. full SIS; retain adequate liquidity; no pledging language.
- File Form 6252 annually; monitor the §453A calculation; retain cost, improvement, and depreciation records.
Distinguish a legitimate SIS from a monetized installment sale. A genuine SIS accepts real illiquidity. Avoid: late structuring (installment language after the seller can demand cash); pledging the obligation as collateral; ignoring recapture; a weak carrier or over-concentration; and attempting an SIS for an unqualified asset.
Add these items to the closing file
Confirm seller and taxpayer identity, current product eligibility, permitted payee, buyer fallback or release, the actual guarantee, principal/interest and OID schedules, current-tax reserves, §453A calculations, estate provisions, and any planned entity liquidation. For business sales retain supported allocations and payment designations. For contingent prices and escrows document control and basis treatment. See the deep dives linked in the contents.
Sources: IRS Publication 537; IRC §453; IRC §453A.
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