A subject-to mortgage is a way to buy a property by taking over the seller’s existing mortgage payments without formally assuming the loan. Title transfers to the buyer, but the promissory note stays in the seller’s name and the lender is not part of the transaction. There is no underwriting, no credit check, no new loan origination. The buyer simply agrees, by contract with the seller, to keep paying the mortgage that is already in place.
The structure appeals to investors, buyers who can’t qualify for conventional financing, and sellers who need a fast exit. It also carries risks that don’t exist in a normal purchase, because the seller stays legally responsible for a debt they no longer control, and the lender retains a right to call the loan due the moment the property changes hands.
The Split Between Owning the Property and Owing the Debt
The whole arrangement rests on a legal separation that doesn’t exist in a standard sale. Ordinarily, when a house changes hands, the buyer both takes title and takes on the debt. In a subject-to deal, only ownership moves. The seller signs a deed conveying the property to the buyer, and that deed gets recorded at the county recorder’s office. The mortgage lien stays attached to the property. The buyer owns the house subject to that lien, which is where the name comes from.
The promissory note doesn’t change. The seller remains the borrower on the bank’s books, receives the statements, and is the person the lender will pursue if payments stop. The buyer has no contract with the lender at all. What the buyer does have is a contractual promise to the seller to keep the payments current.
That contractual layer is what holds the arrangement together. If the buyer stops paying, the seller’s credit collapses and the property faces foreclosure, so the seller has strong reason to enforce the contract. The buyer’s side of the trade is immediate ownership, the seller’s existing interest rate and remaining term, and no lender qualification process.
Why Sellers Agree to This
Sellers usually agree to a subject-to sale when they need out fast. A homeowner behind on payments, relocating for work, or unable to sell through normal channels can transfer the property and stop the monthly bleed the same week. Foreclosure stays on a credit report for seven years from the date of the first missed payment, so keeping the loan current has lasting value for the seller.1Consumer Financial Protection Bureau. If I Lose My Home to Foreclosure, Can I Ever Buy a Home Again? A subject-to deal gets the account current and keeps it that way, with no listing, no repairs, and no agent commission.
For the buyer, the appeal is skipping the lender entirely. Origination fees, discount points, and appraisal charges don’t appear on the closing statement because no new loan is being written. Title work, recording fees, and transfer taxes still apply, but the loan-related costs that make up the bulk of a normal closing simply aren’t there.
The Documents That Make the Deal Work
A subject-to closing produces a short stack of documents compared to a standard purchase, and every one of them matters more than usual. Missing or sloppy paperwork is where these deals most often fall apart years down the road.
The Deed
The seller signs a deed, typically a special warranty deed or a quitclaim deed, transferring title to the buyer. Recording that deed at the county recorder’s office puts the buyer on the public record as the legal owner. Every day between signing and recording is a day the buyer’s ownership isn’t publicly established, so prompt recording matters.
The Purchase Agreement
The contract between buyer and seller is the spine of the deal. It has to cover the buyer’s payment obligations, the treatment of any equity paid to the seller at closing, what happens if the buyer defaults, and what happens if the lender accelerates the loan. Because the seller stays on the hook for a debt they no longer control, clear default remedies matter here more than in almost any other kind of real estate transaction.
Limited Power of Attorney
The seller grants the buyer a narrow power of attorney covering only the existing mortgage and the property. Without it, the buyer cannot call the servicer, request payoff statements, access account information, or manage the escrow account. Federal privacy rules restrict financial institutions from disclosing nonpublic personal information to third parties, so the servicer won’t speak with anyone who isn’t the named borrower unless proper authorization is on file.2Federal Trade Commission. Financial Privacy Rule The same authorization lets the buyer obtain the annual Form 1098 showing mortgage interest paid.3Internal Revenue Service. Form 1098 Instructions for Payer/Borrower
Hazard Insurance
The buyer has to put a new hazard policy in place at closing, in the buyer’s own name, listing the original mortgage lender as the mortgagee and loss payee. Every mortgage contract requires this kind of coverage. If insurance lapses or lists the lender incorrectly, the servicer can force-place its own policy and add the premium to the loan. Federal regulations allow servicers to assess force-placed insurance charges when they have a reasonable basis to believe the required coverage isn’t in place.4Consumer Financial Protection Bureau. 12 CFR 1024.37 Force-Placed Insurance Force-placed policies are expensive and protect only the lender’s interest, not the buyer’s.
The closing itself should run through a title company or attorney who pulls the original loan documents, verifies the payment amount and escrow balance, and confirms no other liens are attached to the property.
Handling the Payments After Closing
Once the deal closes, the buyer’s most important job is keeping the mortgage current. A single late payment lands on the seller’s credit report. Enough missed payments trigger foreclosure against a property the seller no longer owns. This is the most common source of litigation in subject-to transactions.
The cleanest arrangement routes payments through a third-party loan servicing company. The servicer collects from the buyer, forwards the payment to the lender, and produces a documented payment history both parties can access. That paper trail eliminates disputes about whether payments were made and when. Some buyers instead use the power of attorney to set up an ACH transfer directly from their bank account to the lender, which works but gives the seller less visibility.
Escrow needs ongoing attention. Property tax and insurance disbursements still flow through the original lender’s escrow account, and the annual escrow analysis still goes to the named borrower, which is the seller. If taxes or premiums rise, the escrow portion of the payment adjusts. An escrow shortage the buyer ignores becomes a delinquency on the seller’s account, so the buyer needs copies of every escrow analysis and needs to fund shortages promptly.
Meticulous records of confirmation numbers, posting dates, and escrow adjustments protect both sides if the arrangement ever ends up in court.
The Due-on-Sale Clause Is the Central Risk
Almost every residential mortgage contains a due-on-sale clause. It gives the lender the right to demand full repayment of the outstanding balance if the property changes hands without the lender’s consent. Recording a deed from seller to buyer is exactly the kind of transfer that triggers it. Federal law explicitly authorizes lenders to enforce due-on-sale clauses, and no state law can override that authority.5Office of the Law Revision Counsel. 12 US Code 1701j-3 – Preemption of Due-on-Sale Prohibitions
If the lender invokes the clause, it sends an acceleration letter setting a deadline to pay off the balance. That deadline typically runs about 30 days. If the buyer can’t refinance or pay by then, foreclosure follows.
The practical reality softens the risk somewhat. Lenders rarely enforce the clause on a performing loan, because a loan that’s being paid on time generates steady income with zero collection cost. Calling it due means either getting paid off or foreclosing, and foreclosing is expensive and slow. But rarely is not never. A lender is more likely to enforce when current market rates are well above the loan’s rate, because redeploying that capital at a higher yield is profitable. Discovery often happens when the new insurance policy arrives at the servicer with the buyer’s name on it instead of the seller’s.
This is the central gamble of every subject-to deal. The entire structure assumes the lender won’t exercise a right federal law clearly gives it. When the assumption breaks, the buyer has about 30 days to come up with the full remaining balance or lose the property.
Garn-St. Germain Exceptions and the Land Trust Workaround
The Garn-St. Germain Depository Institutions Act, the same law that authorizes due-on-sale clauses, also lists specific transfers where a lender cannot accelerate. For residential properties with fewer than five units, the lender is prohibited from calling the loan due when:
- A joint tenant or tenant by the entirety dies and the property passes by operation of law.
- The borrower dies and the property passes to a relative.
- The borrower transfers to a spouse or child, or adds one to title.
- Title moves to a spouse under a divorce decree or separation agreement.
- The borrower moves the property into an inter vivos trust where the borrower remains a beneficiary and occupancy doesn’t change.
- A junior lien is added without transferring occupancy rights.
- A lease of three years or less is granted without a purchase option.
- A purchase-money security interest is taken in household appliances.
None of these apply to a standard subject-to deal between unrelated parties.
Some investors try to use the living trust exception as a backdoor. The seller first transfers the property into a land trust, which is protected under Garn-St. Germain, then assigns the beneficial interest in the trust to the buyer. The argument is that step one is expressly protected and step two is just an assignment of a beneficial interest rather than a transfer of real property.
The federal regulations implementing Garn-St. Germain complicate that theory. The trust exemption applies to homes “occupied or to be occupied by the borrower,” and the borrower has to remain both a beneficiary and an occupant.6eCFR. 12 CFR 191.5 – Limitation on Exercise of Due-on-Sale Clauses Once the seller assigns beneficial interest to a third-party buyer and moves out, the conditions for the exemption fall away. The regulation also states that if a later event disqualifies a transfer from a previously applicable exception, the lender’s right to accelerate returns. The land trust route can delay discovery. It does not eliminate the acceleration risk.
Tax Consequences on Both Sides
Subject-to transactions produce tax situations that catch both parties off guard if nobody plans for them.
Who Deducts the Mortgage Interest
The Form 1098 goes to the seller, because the seller is still the named borrower. But the buyer is the one actually paying the interest. Treasury guidance addresses this: a taxpayer who pays mortgage interest on a property they own can deduct that interest as long as they hold legal or equitable ownership of the property and the mortgage is a secured debt on a qualified home in which they have an ownership interest.7Internal Revenue Service. Publication 936 – Home Mortgage Interest Deduction A subject-to buyer holds the deed, so they should be able to claim the deduction. The buyer reports the interest on Schedule A, line 8b (for interest not shown on a Form 1098 in their name), and attaches a statement explaining the arrangement. The seller should not deduct interest they didn’t actually pay. Getting this wrong on either side invites an audit, so both parties should work with a tax professional who knows these transactions.
Reporting the Sale
The transfer of title is a reportable real estate transaction. The closing agent generally files Form 1099-S reporting the proceeds.8Internal Revenue Service. Instructions for Form 1099-S: Proceeds From Real Estate Transactions The seller may owe capital gains tax on any profit. Calculating that profit is more involved than in a normal sale because the “proceeds” include the outstanding mortgage balance the buyer is taking over, not just any cash the seller receives at closing. If the property was the seller’s principal residence and the gain falls within the Section 121 exclusion (up to $250,000 for single filers, $500,000 for married filing jointly), the sale may not be taxable and the seller may be able to certify an exemption from 1099-S reporting.
What Happens If the Seller Dies or Files Bankruptcy
A subject-to buyer’s position depends on the seller’s continued existence and financial stability. Careful documentation can’t fully close that gap.
When the original borrower dies, the mortgage doesn’t disappear. It becomes part of the seller’s estate. Garn-St. Germain blocks the lender from accelerating when a property passes to a relative on the borrower’s death, but a subject-to buyer typically isn’t a relative. The buyer already holds the deed, so the property itself shouldn’t pass through probate, but the seller’s heirs or executor may still dispute the transaction. The limited power of attorney terminates on the seller’s death, cutting the buyer off from the servicer until new authorization can be arranged through the estate.
Bankruptcy creates faster complications. The automatic stay that takes effect on filing halts collection activity against the seller, including foreclosure. The mortgage debt is part of the bankruptcy estate, and the trustee has a say in what happens to it. Under some circumstances, the trustee may seek to reject or modify the arrangement with the buyer. A buyer already in title and current on payments has some protections available to purchasers in possession of real property, but preserving those rights usually requires counsel. Seller bankruptcy is the scenario where the theoretical risks of a subject-to deal turn concrete quickly.
Subject-To vs. Wraparound Mortgage
These two structures get confused constantly, and the difference matters.
In a subject-to deal, no new loan is created. The buyer takes over payments on the seller’s existing mortgage, and that mortgage is the only debt instrument in play. Payments go to the existing lender.
In a wraparound mortgage, sometimes called an all-inclusive deed of trust, the seller writes a new loan to the buyer. The new loan wraps around the existing mortgage. The buyer sends a single payment to the seller that covers both the underlying mortgage payment and the seller’s profit. The seller keeps paying the original mortgage out of what they collect. A wrap involves two active loans; a subject-to involves one.
The legal exposure differs accordingly. Because a wrap creates a new loan, it can trigger the Dodd-Frank Act’s seller-financing rules. Sellers who provide financing on more than three properties in a 12-month period may be classified as loan originators, which brings ability-to-repay requirements and other obligations.9Consumer Financial Protection Bureau. What Is the Ability-to-Repay Rule? A pure subject-to deal creates no new loan and is less likely to draw those rules, but investors who combine subject-to acquisitions with seller financing to their own end buyers should get legal advice on compliance.
Exit Strategies for the Buyer
Every subject-to deal needs an exit plan. Riding the seller’s mortgage indefinitely isn’t realistic, because the due-on-sale risk persists as long as the original loan exists, and neither party wants the ongoing entanglement forever.
- Refinance into the buyer’s own name. The buyer takes out a new mortgage, pays off the seller’s loan, and ends the due-on-sale exposure. This requires the buyer to qualify, which they often couldn’t do at the time of purchase, so many buyers use the subject-to period to build equity, establish rental income history, or repair credit.
- Sell the property. A resale to a purchaser with conventional financing pays off the original mortgage and releases the seller’s liability. This is the standard exit for investors who buy, rehab, and flip.
- Pay off the loan. If the buyer accumulates enough cash or the balance shrinks enough, they can just pay it off. Less common, but effective.
The worst outcome is having no plan when the lender accelerates. Thirty days isn’t enough time to arrange financing or a sale from a standing start. The exit strategy needs to be in motion from the day of closing, not the day the acceleration letter arrives.
Seller Protections If the Buyer Defaults
Sellers are in an unusually exposed position. They’ve released the property but stayed liable for the debt. If the buyer stops paying, the options are limited and none are quick.
The direct remedy is a breach-of-contract lawsuit under the purchase agreement. Strong default provisions should give the seller the right to sue for damages, including missed payments, credit damage, late fees, and lender penalties. Some agreements include a deed-back provision letting the seller reclaim the property on default, though enforcing that in practice usually requires litigation.
Upfront protection matters more than after-the-fact remedies. Sellers can require the buyer to use a third-party loan servicer, insist on monthly payment confirmations, and negotiate strong default language into the purchase agreement. Even with all of that in place, the seller’s credit stays exposed from closing until the original mortgage is paid off. A seller who isn’t comfortable with that exposure shouldn’t do the deal.