Trust-Based vs. Annuity-Based Structured Installment Sale
A trust-based structured installment sale uses a fiduciary trust to hold and manage your sale proceeds, paying you through a secured promissory note with published fixed interest rates of 5–7%. An annuity-based structured installment sale assigns the buyer's payment obligation to an insurance company intermediary, which purchases an annuity to fund your payments at market-dependent rates. Both defer capital gains under IRC Section 453 — but they differ significantly in rate transparency, estate planning benefits, revocability, minimum transaction sizes, and process complexity. Understanding these differences is critical to selecting the right structure for your specific situation.
13-Factor Head-to-Head Comparison
| Factor | Trust-Based SIS | Annuity-Based SIS |
|---|---|---|
| Structure | Trust-backed promissory note | Annuity-backed assignment via intermediary |
| Interest Rates | Published fixed rates: 5% (5yr), 6% (10yr), 6.5% (15yr), 7% (20yr) | Market-dependent annuity rates set at time of purchase |
| Minimum Transaction | $100,000 | $500,000 |
| Maximum Term | 20 years | 40 years |
| Revocability | Revocable — flexible structure with options to restructure | Irrevocable — locked into annuity contract terms |
| Estate Planning | Step-up in basis potential; trust transfers to heirs | No step-up in basis; heirs inherit deferred tax liability |
| Early Access / Liquidity | Custom liquidity strategies negotiable | Locked into annuity contract — limited or no early access |
| Relationship | Fiduciary trustee manages assets directly | Insurance company processes claims through intermediaries |
| Process Complexity | 3-step process | 5-step process (buyer → assignment company → annuity issuer → payments) |
| Intermediaries | Direct — advisor to client, one trust, one trustee | Through structured settlement brokers and assignment companies |
| Constructive Receipt | Avoided — funds go to trust, not seller | Avoided — buyer obligation assigned to intermediary |
| IRS Foundation | IRC Section 453 / IRS Publication 537 | IRC Section 453 / IRS Publication 537 |
| Upgrade Path | 537 IST available for deals over $1M | Single product — no upgrade path for larger transactions |
10 Advantages of a Trust-Based Structure
Lower Minimums
Serves the $100K–$1M range that annuity-based providers won't touch with $500K minimums.
Transparent Fixed Rates
Published rates of 5%, 6%, 6.5%, and 7% — no guessing what the insurance market will offer.
Balloon Payment Options
Interest-only + balloon gives sellers maximum flexibility in how they receive funds.
Estate Planning Superiority
Revocable trust with step-up in basis potential vs. irrevocable annuity with inherited tax liability.
Simpler Process
3 steps vs. 5 steps. No assignment company or annuity purchase intermediary required.
Direct Relationship
Fiduciary trustee manages your assets personally — not a faceless insurance company.
Upgrade Path to 537 IST
Larger deals ($1M+) can move to the full Installment Sale Trust. No annuity equivalent exists.
Fewer Middlemen
No structured settlement brokers taking a cut between you and your money.
Negotiable Early Access
Custom liquidity strategies are possible. Annuity contracts are rigid once signed.
Personalized Service
A team of attorneys, CPAs, and advisors manage your trust. Not a call center.
When an Annuity-Based SIS Might Make Sense
We believe in transparent comparisons. An annuity-based structured installment sale may be the better choice in certain situations:
- •Institutional credit ratings matter most to you. Major insurance companies carry AA-/Aa3 ratings backed by strict state reserve requirements. If institutional backing is your primary concern, annuity-based structures offer that reassurance.
- •You need a payout period longer than 20 years. Trust-based structures max at 20 years. Annuity-based providers offer terms up to 40 years, which may suit sellers seeking very long-term income streams.
- •Estate planning flexibility is not a priority. If step-up in basis and revocability aren't important to your goals, the estate planning disadvantages of an annuity contract may not matter.
- •Your transaction exceeds $500K and simplicity isn't a concern. The 5-step annuity process adds intermediaries, but if you're comfortable with that complexity and meet the minimum, the end result still defers capital gains effectively.
The right structure depends on your specific transaction, goals, and priorities. We recommend discussing both options with your CPA and attorney before making a decision.
How to Evaluate Which Structure Is Right for You
What is your capital gain amount?
Under $500K: Trust-based is your only SIS option (annuity minimums are $500K). Over $500K: Both structures are available.
How important is estate planning?
If you want step-up in basis for heirs or need revocability, trust-based structures have a clear advantage.
Do you need rate certainty before committing?
Trust-based rates are published and fixed. Annuity rates are quoted at the time of purchase and depend on market conditions.
Do you anticipate needing early access to funds?
Trust-based structures allow negotiable liquidity. Annuity contracts are generally irrevocable once signed.
How long do you need payments to last?
Up to 20 years: Either structure works. 21–40 years: Only annuity-based providers offer terms this long.
Frequently Asked Questions
Related Resources
Not Sure Which Structure Is Right for You?
Our team can walk you through both options with your specific numbers — no obligation, no pressure.
This content is for informational purposes only and does not constitute tax, legal, or financial advice. Capital gains tax laws are subject to change. The comparison presented is based on publicly available information about trust-based and annuity-based structured installment sale structures. Consult your CPA, tax attorney, or financial advisor before making any tax deferral decisions. Iron Gate Holdings does not provide tax or legal advice. IRS Code Section 453 and Publication 537 govern installment sale treatment.