Sham-Trust Doctrine: The IRS Theory That Could Collapse Your DST

The §453 Structured Installment Sale has no trust. No sham-trust theory can apply because there's no trust to challenge.

What is the sham-trust doctrine?

The IRS and Tax Court have a long history of disregarding entities that lack independent economic substance. The leading cases:

• Helvering v. Clifford (1940) — grantor trust doctrine; if grantor retains too much control, trust ignored
• Markosian v. Commissioner (1979) — trust ignored when used to assign income to the seller's own benefit
• Zmuda v. Commissioner (1984) — multi-tier sham trust scheme collapsed
• Castro v. Commissioner (1992) — trust disregarded for lack of business purpose

These principles apply to DSTs when:

• The trustee is related to the seller or has no independent business
• The trust executes only days before the underlying sale
• The trust holds no asset other than proceeds from the planned sale
• The trust's investment decisions are effectively controlled by the seller
• The trust loans proceeds back to the seller (or seller's family)

The DST audit risk in plain English

If the IRS examines your DST and successfully argues it's a sham trust:

1. The trust is disregarded. For tax purposes, the trust never existed.
2. The sale is recharacterized. You sold directly to the buyer.
3. The installment method is voided. §453 deferral disappears.
4. All gain accelerates to the year of sale. Plus interest and potentially penalties.
5. You owe federal + state tax in year one as if you took the lump sum, but now you also owe interest accumulated from the original sale date.

Real money risk on a $5M deferral: ~$2M tax + 3-7 years of interest at the underpayment rate = an additional $300-700K in interest alone.

How the §453 SIS avoids this entirely

The §453 Structured Installment Sale doesn't use a trust. The mechanic:

1. You sell directly to the buyer — fully arm's-length transaction
2. The buyer's installment payment obligation is assigned to a qualified assignment company — a regulated entity affiliated with a major life carrier (A-rated Fortune 500 companies)
3. The assignment company purchases an annuity from the carrier to fund the payments
4. The carrier pays you on the schedule

There is no trust. The assignment company is a regulated subsidiary of an A-rated life carrier — not a private entity created for your deal. The IRS cannot apply sham-trust doctrine because the only entities involved are the buyer, the assignment company, and the carrier — none of which are your alter ego.

When sham-trust risk is highest

DST audit risk is highest when:

• Trustee is a close affiliate of the promoter or seller's network
• Trust documents were executed within 30 days of the sale
• Trust never holds the underlying asset (form-vs-substance)
• Investment decisions are dictated by the seller or seller's advisor
• Trust holds nothing other than sale proceeds
• Trust makes loans to seller or seller's family

If your DST has these features, your audit exposure is elevated.

When sham-trust risk is lower (but not zero)

• Independent professional trustee with multiple unrelated clients
• Trust formed well before the sale, holds other assets
• Trustee makes investment decisions without seller control
• Trustee compensated at arm's-length rates
• No back-loans to seller or affiliates

Even with these protections, the sham-trust theory remains available to the IRS. The §453 SIS removes it entirely.

How I work

Hans Goldstein, IRC §453 specialist. If you have a DST quote, I model the §453 alternative against it. Same gain deferral, no sham-trust exposure.

an A-rated Fortune 500 carrier / an A-rated Fortune 500 carrier / an A-rated Fortune 500 carrier / an A-rated Fortune 500 carrier — all 50 states. Free fit-check.

Frequently asked

Q: My DST trustee is independent. Sham trust still possible? A: Possible but harder for the IRS to argue. Independence helps; doesn't eliminate the theory.

Q: Has the IRS ever collapsed a DST in Tax Court? A: Specific DST collapses are not public via published opinions — IRS settlements often don't generate published case law. But the sham-trust doctrine has been applied to private trusts repeatedly across decades.

Q: How does the §453 SIS avoid sham-trust risk? A: There's no trust. The assignment company is a regulated subsidiary of a major life carrier — not a private entity created for your deal.

Educational. Not tax or legal advice.