It's the most common pushback to the SIS structure: "If I'm OK getting paid over 10 years, why bring an insurance carrier in at all? I'll just have the buyer pay me directly. Cuts the carrier out." Here are 10 reasons that almost always turns into a disaster for the seller of a real-estate or business asset.
Who do you trust more — a Fortune 500 life-insurance carrier (household-name, A-rated, $100B+ in regulated reserves) writing your checks for the next 25 years, or the buyer's ability to keep paying you over the entire term?
That's the trust gap the SIS structure exists to close.
Think about the last house you sold. The buyer got a mortgage. The bank wired you the full purchase price at closing — not the buyer. You walked away with the check. You never followed up monthly to make sure the buyer was still paying their mortgage on time. You didn't worry about whether they'd lose their job in year 12 and default. That entire 30-year credit-risk problem was the bank's, not yours.
That's exactly the role the carrier plays in an SIS — just funded the opposite direction. The carrier's assignment company takes the buyer's lump-sum at closing (same as a mortgage bank takes the borrower's loan funds) and then makes the long-term scheduled payments back to you. The institutional middleman absorbs the credit risk. You trust the SIS carrier for the same reason you trust the mortgage bank: they're too big, too regulated, and too well-capitalized not to deliver. Direction of money flow is reversed; trust architecture is identical.
The question stops being "do I trust the buyer to keep paying me for 25 years?" and becomes "do I trust a Fortune 500 life-insurance carrier to keep paying me for 25 years?" The answer to the second is the same answer banks already give themselves every time they originate a mortgage they're going to hold for 30 years: yes, because the structural backstops are real.
A "buyer-financed installment sale" — also called seller financing, an owner-carry note, or an installment land contract — is the original form of the §453 installment sale. The IRS has always allowed it. The structure works mechanically: buyer pays you over a period of years, you recognize gain proportionally, same gross-profit-ratio math the SIS uses.
But the §453 tax benefit is the easy part. The hard part is everything that can go wrong over 5, 10, 25 years with a real human (or LLC) on the other side of the obligation. The SIS structure was specifically engineered to keep the tax benefit and replace the buyer with an A-rated U.S. life-insurance carrier — eliminating almost every failure mode of the traditional approach.
Below: the 10 ways buyer-financed installment sales tend to go wrong, and how the SIS structure handles each one.
Your buyer is a person or an LLC. Their financial-strength rating is "good enough to close this one deal." The carrier funding a SIS annuity is rated A or better by AM Best, holds $100B+ in regulated reserves, has a 100-plus-year operating history, and is contractually required by state insurance departments to back every dollar of obligation with matched assets.
You wouldn't loan $1M to a stranger you'd known for 6 months — but that's mechanically what seller financing is. Even with a perfect-on-paper buyer at closing, you have no idea what their financial situation looks like in year 7.
Over 10–25 years, the buyer will likely experience some combination of: divorce, death, disability, lawsuit, bankruptcy, business failure, IRS lien, judgment creditor, family-court attachment, or simple disappearance. Each of these can interrupt or extinguish your payment stream. Even when you have a recorded mortgage or deed of trust on the property, recovery is slow, expensive, and uncertain.
A bankruptcy filing freezes everything. A divorce decree may split your note across two new payors. A buyer's estate may dispute the obligation. You go from passive income recipient to active litigant.
Receiving payments directly means: collecting payments, sending late notices, tracking late fees, preparing annual 1099-INT and Form 6252 information for the buyer, issuing demand letters when they're 30 days late, retaining a collection attorney when they're 90 days late, foreclosing if they default. This is unpaid administrative work that grows over time.
Plus the recordkeeping burden — you have to maintain the amortization schedule, the basis recovery calculations, the imputed-interest allocations under §483, and any §453B disposition events. One missed step and your installment treatment gets challenged on audit.
If the buyer stops paying and you have to foreclose, you're now the owner again — of an asset that the prior owner has been depreciating, maybe under-maintaining, possibly tenanted with problem renters, possibly trashed. You're back at square one with legal fees, repair costs, and a fresh sale to run. And whatever depreciation recapture the buyer didn't recognize bounces back onto your books.
In a down market — which is exactly when buyers default — you may not be able to resell at the original price. The economic outcome can be much worse than just paying tax on the original sale.
Five years in, the buyer refinances at a better rate (or sells the property) and writes you a lump-sum check for the balance. Sounds nice. But that prepayment is treated as an "early disposition" of the installment obligation under §453B(a) — you recognize all the remaining deferred gain in the year of the prepayment. The whole bracket-compression benefit you structured for collapses into one year.
You can refuse the prepayment if the note doesn't allow it, but most market-rate seller notes do. And refusing creates buyer ill-will, possible default, possible litigation.
Interest rates spike, the buyer's business hits a rough year, they ask to lower the payment for 18 months and extend the term. You either say yes (in which case you may trigger a §453B disposition by materially modifying the note) or you say no (in which case you risk default).
Even a "friendly" restructure usually involves a CPA, a lawyer, and three weeks of negotiation. If you say yes, your gain-recognition schedule gets messy and complicated.
If your buyer moves out of state (or out of the country), enforcement of the obligation becomes substantially harder. Wage garnishment, judgment liens, and bank levies all run through the state where the buyer is now located. Filing fees and attorney costs in another jurisdiction quickly exceed what you'd recover from a small monthly payment.
This is particularly bad for California sellers, where buyers commonly relocate to Texas, Nevada, or Florida after closing — all of which have buyer-friendly enforcement environments.
Five years in, you have a financial emergency and need a lump sum. Your seller note can be sold to a note-buying secondary market, but the sale triggers §453B disposition — all the remaining deferred gain is recognized in the year of sale, plus you'll take a 25-40% discount from the secondary buyer (the same "lump-sum penalty" that we walk through on the homepage). You eat the full Year-1 tax bill AND you sell the note at a steep discount. Worst of both worlds.
A seller note exists in a manila folder in your file cabinet (or a PDF on your laptop). The carrier's annuity is administered by a $700B financial-services company with 24/7 support, online portals, automated direct deposit, fraud monitoring, audit trails, and decades of operational experience handling millions of structured-settlement payments. If something goes wrong with your seller note, there's no help desk to call. If something goes wrong with the carrier annuity, there's an entire department.
If you tell a buyer "I'll seller-finance," most will respond with "great, I'll pay 5–15% less in exchange for those terms." This is rational on their end — they're taking on the loan, paying interest, dealing with the recordkeeping. From your end, you've now (a) accepted a lower price AND (b) taken on all 9 problems above. You compounded the downside.
The obvious "exception" most people think of is a related-party sale: selling to your kids, a sibling, a long-trusted business partner, or a family LLC. The 10 problems above feel mitigated by the relationship — you know the buyer's financial situation, you trust they won't default, you're often happy to renegotiate if circumstances change, you're not particularly worried about state-line enforcement against your own family. The financial risk profile drops.
But family seller-financing carries a different and arguably bigger risk: relationship damage if anything goes wrong. If your son loses his job in year 8, your sibling's business hits a bad year, or your in-law's marriage falls apart, you're choosing between two painful options:
A lot of family-financed sales end in one of these two outcomes. The Thanksgiving table never quite recovers from (a). Option (b) corrodes the relationship from a different angle. Use family seller-financing at your own risk — even when the financial logic looks airtight, the relationship-cost calculation is usually worse than it appears at the kitchen-table moment when everyone agrees the deal is "fine."
The SIS structure can actually keep family relationships cleaner by removing you as the lender entirely. Your kid (or sibling, partner, etc.) pays the carrier at closing like any other buyer. The carrier pays you over 25 years. There's no debtor-creditor relationship between you and your family. No awkward "did you make the payment this month?" conversations at Christmas. No leverage one of you holds over the other. The family transaction looks like any other arms-length sale on paper, with the relationship preserved on the side.
(Setting aside the §453 mechanics still needed in any related-party case — the §453A interest charge on installment obligations over $5M, the §453(g) special rules for related-party transactions, the 2-year resale lookback under §453(e), and the imputed-interest rules. A CPA and tax attorney still need to be involved either way.)
For arms-length sales to unrelated buyers — which is 95%+ of real-estate and business sales — the SIS structure exists specifically to keep the §453 tax benefit while eliminating the buyer-as-counterparty risk. That's why structured installment sales evolved from the traditional installment sale model in the first place.
The SIS structure was built specifically to give you the installment-method bracket compression without making you the lender. Want to walk through whether SIS or a traditional seller-carry fits your specific case?
Talk to Hans — 213-414-2808