A subject to mortgage is a way of buying real estate in which the buyer takes title to the property and continues making payments on the seller’s existing loan, while that loan stays in the seller’s name. No new mortgage is originated, no lender approves the buyer, and no one assumes the debt in a formal sense. The buyer owns the house. The seller still owes the bank. A private contract between them holds the arrangement together.
That structure appeals to real estate investors and to buyers who can’t easily qualify for conventional financing. It also carries risks that don’t exist in a normal purchase, and both sides need to understand them before closing.
How the Structure Separates Ownership From Debt
The whole arrangement rests on a legal separation between two things most people think of as inseparable: owning a property and owing the debt on it. In a standard sale, both transfer at once. Here, only ownership changes hands. The seller signs a deed giving the buyer title. The promissory note (the IOU to the bank) stays entirely in the seller’s name. The buyer never signs anything with the lender and has no direct legal obligation to the bank.
What the buyer does have is a contractual obligation to the seller. The purchase agreement spells out that the buyer will keep making the monthly mortgage payments. If the buyer stops paying, the seller’s credit gets destroyed and the property faces foreclosure, so the seller has real exposure even after handing over the deed. The buyer’s side of the trade is straightforward: immediate ownership, the seller’s existing interest rate and loan terms, and no months-long qualification process.
Why a Seller Would Agree
Sellers typically do this when they need a fast exit. Someone behind on payments, relocating for work, or unable to sell through traditional channels can transfer the property and stop bleeding cash immediately. Foreclosure stays on a credit report for seven years from the first missed payment, so avoiding it has lasting value.1Consumer Financial Protection Bureau. If I Lose My Home to Foreclosure, Can I Ever Buy a Home Again? A subject-to deal gets payments current and keeps them flowing, without listing the home, making repairs, or paying agent commissions.
What the Buyer Saves
No new loan means no origination charges, discount points, or appraisal fees. On a conventional purchase, total closing costs run 2% to 5% of the mortgage amount.2Fannie Mae. Closing Costs Calculator A subject-to closing still involves title work, recording fees, and potentially transfer taxes, but the lender-related chunk disappears. The buyer also inherits whatever rate the seller locked in, which can be a significant advantage when current market rates are higher.
The Documents That Hold the Deal Together
A subject-to transaction generates a short stack of documents compared to a conventional purchase, but each one carries outsized importance. Missing or poorly drafted paperwork is where these deals most commonly fall apart months or years later.
The Deed
The seller signs a new deed, usually a special warranty deed or a quitclaim deed, transferring title to the buyer. The deed gets recorded in the county recorder’s office, making the buyer the legal owner of record. The existing mortgage lien stays attached to the property. That lien doesn’t go away just because ownership changed. The buyer owns the house subject to that lien, which is where the name comes from.
The Purchase Agreement
The contract between buyer and seller is the backbone of the deal. It should 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. Clear default remedies matter more here than in almost any other type of real estate transaction, because the seller’s credit and financial future depend on a buyer who has no obligation to the bank.
Limited Power of Attorney
The seller grants the buyer a narrowly scoped power of attorney covering only the existing mortgage and the property. This gives the buyer authority to contact the mortgage servicer, request payoff statements, access account information, and manage the escrow account. Without it, the buyer is locked out. Federal privacy regulations restrict financial institutions from disclosing nonpublic personal information to third parties, so the servicer won’t talk to someone who isn’t the named borrower unless proper authorization is in place.3Federal Trade Commission. Financial Privacy Rule The power of attorney also lets the buyer obtain the annual Form 1098 showing mortgage interest paid during the year, which matters at tax time.4Internal Revenue Service. Form 1098 Instructions for Payer/Borrower
Hazard Insurance
The buyer needs to secure a new hazard insurance policy in their own name immediately at closing. The policy must name the original mortgage lender as the mortgagee and loss payee. This protects the lender’s collateral interest, a standard requirement in virtually every mortgage contract. If the insurance lapses or doesn’t list the lender correctly, the servicer can force-place its own coverage on the property and charge the cost to the loan. Federal regulations allow servicers to assess force-placed insurance charges when they have a reasonable basis to believe the borrower hasn’t maintained the required coverage.5Consumer Financial Protection Bureau. 12 CFR 1024.37 Force-Placed Insurance Force-placed policies are expensive and cover only the lender’s interest, not the buyer’s.
The closing itself should involve a title company or attorney who reviews the original loan documents to confirm the payment amount, verify the escrow balance, and ensure no other liens exist on the property. The deed needs to be recorded promptly. Every day between signing and recording is a day the buyer’s ownership isn’t publicly established.
Running the Mortgage After Closing
Once the deal closes, the buyer’s most important job is keeping that mortgage current. A single late payment hits the seller’s credit report, and enough missed payments trigger foreclosure proceedings against a property the seller no longer controls. This is the most common source of litigation in subject-to transactions.
The safest approach is to route payments through a third-party loan servicing company. The servicer collects from the buyer, forwards the payment to the lender, and generates a documented payment history that both parties can access. That eliminates disputes about whether payments were made and when. Some buyers instead use the limited power of attorney to set up automated transfers from their bank account to the lender, which works but gives the seller less visibility.
Escrow needs ongoing attention. The original lender handles property tax and insurance disbursements through the escrow account, and sends annual escrow analysis statements to the named borrower, who is still the seller. If taxes go up or insurance premiums change, the escrow payment adjusts. The buyer needs copies of every escrow analysis to make sure the monthly amount is correct and no shortages are building. An escrow shortage the buyer ignores becomes a delinquency on the seller’s account.
Keep meticulous records of every payment, including confirmation numbers, posting dates, and escrow adjustments. If the deal ever ends up in court, that documentation is the whole case.
The Due-On-Sale Clause
Nearly every residential mortgage contains a due-on-sale clause, which gives the lender the right to demand full repayment of the outstanding balance if the property changes hands without the lender’s consent. Recording the deed from seller to buyer is exactly the kind of transfer that triggers this clause.
Federal law explicitly authorizes lenders to enforce due-on-sale clauses, and no state law can override that authority.6Office 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 loan, typically around 30 days. If the buyer can’t refinance or pay the balance by then, the lender can begin foreclosure.
The practical reality is that lenders rarely enforce the clause when the loan is current. A performing loan generates steady income with zero collection costs. Calling it due means the lender either gets paid off (good outcome) or has to foreclose (expensive, slow, risky). Most lenders have no economic incentive to disrupt a loan that’s being paid on time.
Rarely is not never. A lender that discovers the transfer might enforce the clause when current interest rates are significantly higher than the loan’s rate, because redeploying that capital at a higher rate is profitable. Discovery often happens when the new insurance policy arrives at the servicer’s office with the buyer’s name on it instead of the seller’s. This is the central gamble of every subject-to deal. The arrangement works until it doesn’t, and when it doesn’t, the buyer has about a month to come up with the full remaining balance or lose the property.
Garn-St. Germain Exceptions and the Land Trust Idea
The Garn-St. Germain Depository Institutions Act authorizes due-on-sale clauses, but it also carves out nine situations in which a lender cannot accelerate a loan on a residential property with fewer than five units. The protected transfers include:
- A transfer by operation of law when a joint tenant or tenant by the entirety dies.
- A transfer to a relative on the borrower’s death.
- Adding a spouse or child to the title, or transferring ownership to them outright.
- A transfer to a spouse under a divorce decree or separation agreement.
- Moving the property into an inter vivos trust where the borrower remains a beneficiary and occupancy doesn’t change.
- Adding a second mortgage, home equity line, or other junior lien that doesn’t involve transferring occupancy rights.
- Granting a lease of three years or less without a purchase option.
- A purchase-money security interest for household appliances.
None of these protect a standard subject-to deal between unrelated parties. The buyer is not a spouse, child, or trust beneficiary of the seller.
Why the Land Trust Workaround Isn’t a Shield
Some investors try to use the living trust exception as a backdoor. The seller first transfers the property into a land trust with the seller as beneficiary (protected by Garn-St. Germain), then assigns the beneficial interest in the trust to the buyer. The theory is that the first step is protected and the second step is merely an assignment of a beneficial interest, not a transfer of real property.
The federal regulations implementing Garn-St. Germain add an important wrinkle. The exemption for trust transfers applies specifically to homes “occupied or to be occupied by the borrower,” and the borrower must remain both the beneficiary and the occupant.7eCFR. 12 CFR 191.5 – Limitation on Exercise of Due-on-Sale Clauses Once the seller assigns the beneficial interest to a third-party buyer and moves out, the conditions for the exemption fall away. The regulation also states that if a subsequent event disqualifies a transfer from a previously applicable exception, the lender’s right to enforce the clause returns. The land trust strategy may delay discovery, but it doesn’t eliminate the legal risk of acceleration.
Tax Consequences on Both Sides
Subject-to transactions create tax situations that surprise both parties if they haven’t planned for them.
Who Deducts the Mortgage Interest
The Form 1098 showing mortgage interest paid during the year goes to the seller, because the seller is still the named borrower. But the buyer is the one actually making the payments. Treasury regulations address this directly: a taxpayer who pays mortgage interest on a property they own, even if they’re not directly liable on the note, can deduct that interest as long as they hold legal or equitable ownership. The IRS requires that the mortgage be a secured debt on a qualified home in which the taxpayer has an ownership interest.8Internal Revenue Service. Publication 936 – Home Mortgage Interest Deduction A subject-to buyer who holds the deed has ownership, so the deduction belongs to them. The buyer reports the interest on Schedule A on the line 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 pay. Both parties should work with a tax professional familiar with these transactions.
Reporting the Sale
The transfer of title is a reportable real estate transaction. The closing agent is generally required to file Form 1099-S reporting the proceeds from the sale.9Internal 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 nuanced here than in a regular sale, because the “proceeds” include the outstanding mortgage balance the buyer is taking over, not just cash received 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.
If the Seller Dies or Files Bankruptcy
A subject-to buyer’s position depends on the seller’s continued existence and financial stability. No amount of careful documentation fully eliminates that exposure.
Death of the Seller
When the original borrower dies, the mortgage doesn’t disappear. Garn-St. Germain prohibits the lender from accelerating when a property passes on the borrower’s death to a relative, but the subject-to buyer typically isn’t a relative. The buyer already holds the deed, so the property shouldn’t pass through the estate, though the seller’s heirs or executor might dispute the transaction. The limited power of attorney also terminates on the seller’s death, cutting off the buyer’s authorized channel of communication with the servicer. The buyer would need to establish new authorization, potentially through the estate’s executor, to keep managing the loan.
Bankruptcy of the Seller
A seller’s bankruptcy filing creates immediate complications. The automatic stay halts all collection activity against the seller, including foreclosure. The mortgage debt is part of the bankruptcy estate, which means the trustee has a say in what happens to it. The trustee might seek to reject or modify the arrangement with the buyer. If the buyer has already taken title and possession, the Bankruptcy Code provides some protections for purchasers in possession of real property who are current on their payments, but the buyer may need legal counsel to preserve their rights. A seller’s bankruptcy is where the theoretical risks of a subject-to deal become very real, very fast.
How Subject-To Differs From a Wraparound Mortgage
These two structures get confused constantly, and the distinction matters because they carry different legal consequences.
In a subject-to deal, the buyer takes over the seller’s existing mortgage payments. No new loan is created. The buyer and seller have a contract between themselves, but the original mortgage is the only debt instrument in play. The buyer sends payments to the existing lender.
In a wraparound mortgage (sometimes called an “all-inclusive deed of trust”), the seller creates a brand-new loan to the buyer. That new loan wraps around the existing mortgage: the seller collects a single payment from the buyer covering both the old mortgage payment and the seller’s profit margin, and the seller remains responsible for paying the underlying mortgage. A wrap involves two active loans.
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 regulatory obligations.10Consumer Financial Protection Bureau. What Is the Ability-to-Repay Rule? A pure subject-to deal doesn’t create a new loan, so those rules are less likely to apply. Investors who combine subject-to acquisitions with seller financing to end buyers should consult an attorney about compliance.
Exit Strategies for the Buyer
Every subject-to deal needs an exit plan. Riding the seller’s mortgage indefinitely isn’t realistic. The due-on-sale risk persists for as long as the original loan exists, and the seller’s ongoing credit exposure creates a relationship neither party wants to maintain forever.
- Refinance into the buyer’s name. The cleanest exit. The buyer obtains a new mortgage, pays off the seller’s original loan in full, and eliminates the due-on-sale risk entirely. Many investors use the subject-to period to build equity, establish rental income history, or improve their credit so they can refinance within a few years.
- Sell the property. The buyer sells to a new purchaser who obtains conventional financing. Sale proceeds pay off the original mortgage, releasing the seller’s liability. This is the most common exit for investors who buy, rehabilitate, and flip.
- Pay off the loan. If the buyer has sufficient cash or builds enough equity, they can simply pay the remaining balance.
The worst outcome is having no exit plan when the lender accelerates. Thirty days to refinance or pay off a mortgage is not enough time if the buyer hasn’t laid groundwork. Start working on the exit the day you close, not the day you receive an acceleration letter.
What the Seller Can Do if the Buyer Stops Paying
Sellers in subject-to deals are in an unusually vulnerable position. They’ve given up control of the property but remain fully liable for the debt. If the buyer stops paying, the options are limited and none of them are fast.
The most direct remedy is a lawsuit for breach of contract. The purchase agreement should include clear default provisions spelling out the seller’s right to sue for damages, including missed payments, credit damage, and any late fees or penalties assessed by the lender. Some agreements include a deed-back provision letting the seller reclaim the property on default, though enforcing it in practice often requires litigation.
Sellers can protect themselves upfront by requiring the buyer to use a third-party loan servicer, insisting on monthly payment confirmations, and including strong default provisions in the purchase agreement. Some sellers also record a performance deed of trust against the property, giving them a lien position that provides leverage if the buyer fails to perform. Even with these protections, the seller’s credit remains exposed from the day the deal closes until the original mortgage is paid off. Sellers who aren’t comfortable with that exposure shouldn’t do the deal.