Due on Sale Clause: What Sellers Must Know Before Seller Financing
A due on sale clause is the part of your mortgage that lets the lender demand the entire balance if you sell or transfer the property, or any interest in it, without the lender's written consent. Federal law expressly allows lenders to enforce it. For a seller thinking about seller financing, a wrap, a land contract or a "subject to" sale while a loan is still in place, the clause is the single biggest legal risk in the deal: it does not stop you from signing, but it can end your installment plan the day the lender finds out.
What is a due on sale clause?
The Garn-St Germain Depository Institutions Act defines it as "a contract provision which authorizes a lender, at its option, to declare due and payable sums secured by the lender's security instrument if all or any part of the property, or an interest therein, securing the real property loan is sold or transferred without the lender's prior written consent" (12 U.S.C. §1701j-3(a)(1)).
Two features matter to sellers:
- "At its option." The lender may call the loan, not must. Many lenders do not notice or do not act, especially when payments keep arriving and rates have fallen. When rates are above your loan's rate, the lender has a financial reason to act.
- "Or an interest therein." It is not limited to deeds. A land contract, an option, or a long lease can be a transfer of an interest.
The Garn-St Germain exceptions
For loans on residential property with fewer than five dwelling units, §1701j-3(d) lists transfers on which the lender may not exercise the clause. The implementing regulation (12 CFR §191.5(b)) applies these to "any loan on the security of a home occupied or to be occupied by the borrower." Paraphrasing the regulation:
| Transfer | Protected? |
|---|---|
| A subordinate lien that does not transfer occupancy rights, unless created under a contract for deed | Yes (contract for deed excluded) |
| Purchase-money security interest for household appliances | Yes |
| Transfer on the death of a joint tenant or tenant by the entirety | Yes |
| Lease of three years or less with no option to purchase | Yes |
| Transfer to a relative on the borrower's death, if the relative occupies | Yes |
| Transfer where the spouse or children become owners, if they occupy | Yes |
| Transfer by divorce decree or property settlement to a spouse | Yes |
| Transfer into a living (inter vivos) trust where the borrower stays beneficiary and occupant | Yes |
| Sale to an unrelated buyer, with any kind of seller financing | No |
| Lease with an option to purchase, or any lease over three years | No |
| Contract for deed | No |
So the exceptions help estate planning and family transfers. They do not cover an ordinary seller-financed sale, a wrap, a land contract, or a rent-to-own deal. Selling to your own child who will live in the home is on the protected list; see selling a house to a family member.
Due on sale clause and seller financing: your four options
| Option | Due-on-sale risk | Effect on your taxes |
|---|---|---|
| Pay off the loan at closing from the buyer's down payment or your cash | None | The payoff is treated as a payment to you in the year of sale |
| Lender-approved assumption | None if approved in writing | Assumed debt is not a payment up to your basis |
| Wraparound or AITD (you keep paying the old loan) | High | Unsettled; see wraparound mortgage |
| Subject-to deed transfer (buyer pays your loan) | High | Debt taken subject to is treated like assumed debt |
The first two remove the risk. The last two keep it. The tax consequences of each are laid out with numbers in seller financing with an existing mortgage.
What is "subject to" in real estate? The seller's side
In a subject-to sale, you deed the property to the buyer, the buyer makes your mortgage payments, and the loan stays in your name. It is marketed to sellers who are behind on payments or have little equity. From the seller's side:
- You remain fully liable on the loan. Late payments by the buyer hit your credit.
- You no longer own the property that secures your debt, so you cannot sell or refinance your way out.
- The lender can call the loan under the due-on-sale clause.
- Insurance gets messy. Your homeowner's policy may not cover a property you no longer own or occupy; the buyer's policy must name your lender.
- If the buyer walks away, the lender forecloses on a loan in your name.
If you are paid something for your equity, it may be by a note from the buyer, which makes it an installment sale with the loan treated as debt taken subject to. Seller protections to insist on: a neutral servicer that pays your lender directly, proof of payment each month, escrowed taxes and insurance, and a written plan and deadline for the buyer to refinance you out. Better yet, compare this to a straight sale or a short sale with your own advisors before you sign; see is seller financing a good idea.
What happens if the lender calls the loan?
The lender sends a written notice demanding payment in full, usually with a deadline. If the balance is not paid, it can foreclose. Federal rules bar a prepayment penalty when a lender itself declares a loan due under the clause (12 CFR §191.5(b)(2)).
In practice the buyer must refinance, or you must pay off the loan yourself. Either way your seller-financed note usually gets paid off early, and that moves gain forward.
Simple example. You sold an investment property on a wraparound for $400,000 with a $40,000 down payment and a $360,000 wrap note at 7% over 30 years; your adjusted basis was $200,000, so gross profit is $200,000. Under the court approach your gross profit percentage is 50%. In year 3 the lender calls your underlying loan, the buyer refinances, and the roughly $348,000 wrap balance comes to you at once. That pulls about $174,000 of gain into year 3. With $80,000 of other taxable income plus the year's interest, 2026 federal tax on that year's gain rises from roughly $300 to about $27,600 including net investment income tax (joint return, no depreciation, federal only, statute-ordered calculation). Model your own timing with the calculator.
How lenders find out
Common triggers are a change in the insurance named insured, a new deed recorded in the county, tax bills addressed to a new owner, payments from an unfamiliar account, or a servicer's routine review. Hiding the transfer is not a plan: misrepresenting occupancy or ownership to a lender can create problems far larger than a called loan.
How to protect yourself before signing
- Read your note and mortgage for the exact clause and any assumption provisions.
- Ask the lender whether it will approve an assumption. Some loans are assumable with a credit review.
- Size the down payment so the buyer can pay off or pay down the loan at closing.
- Put a refinance deadline in the contract (a balloon) so your loan is retired on a schedule.
- Use a servicer that pays your lender first and reports to both parties.
- Add contract language on what happens if the loan is called: the buyer must refinance within a set period or the default remedies apply.
- Check the consumer rules if the buyer will live in the home; see seller financing addendum for the disclosures commonly used.
Bottom line
A due on sale clause lets your lender demand full payment when you sell or transfer an interest in the property, and federal law backs the lender. The Garn-St Germain exceptions protect family transfers, deaths, divorces and living trusts, not sales to unrelated buyers, contracts for deed, or leases with purchase options. If you seller-finance with a loan in place, either retire or assume the loan with consent, or plan for the day it is called, including the tax bill when your note is paid off early.
Questions to ask your CPA
- If my loan is paid off at closing from the buyer's money, how much year-one gain does that create?
- If the buyer takes subject to my loan, is any of the debt above my basis and taxed as a year-one payment?
- If the lender calls the loan in a later year, how much gain accelerates and what estimated tax should I plan for?
- How is the interest I keep paying on my old loan treated after the sale?
- Would a lender-approved assumption or a payoff at closing be better after tax?
Run your own numbers. Compare a cash sale, seller financing and a structured installment sale side by side, free.
Educational only, not tax, legal or investment advice. Examples are illustrative. Have your CPA or tax attorney review your facts before you act. Hans Goldstein is a licensed insurance agent (CA Insurance License #4273294) and is not a CPA or attorney. He is paid a commission only if a structured installment sale is funded; seller financing pays him nothing. Disclosures.