A subject-to deal in real estate is a purchase where the buyer takes ownership of the property while the seller’s existing mortgage stays in place, in the seller’s name, on the seller’s credit. The buyer receives the deed and starts making the payments; the loan itself is never refinanced, assumed formally, or paid off at closing. It’s a way to acquire property without qualifying for new financing, and it’s a way for sellers to offload a payment quickly, but the structure creates legal exposure on both sides that a conventional sale doesn’t.
How Ownership and the Loan Get Separated
The whole mechanic rests on splitting two things that normally travel together: who owns the property and who owes the bank. At closing, the seller signs a deed transferring title to the buyer, and that deed gets recorded at the county recorder’s office. From that moment, the buyer is the legal owner of the property. The mortgage, however, doesn’t move. It stays in the seller’s name, on the seller’s credit report, with the seller personally liable to the lender for repayment.
The buyer’s obligation to actually make the mortgage payments comes from a private agreement with the seller, not from any relationship with the lender. The bank doesn’t approve the deal. In most cases, the bank doesn’t even know it happened. If the buyer stops paying, the lender pursues the seller, because the seller is still the one who signed the promissory note.
That separation is where the appeal comes from and where the danger lives. A buyer can pick up a loan with an interest rate locked in years ago, which can transform the cash flow on a rental compared with financing at today’s rates. A seller who can’t afford the payment or can’t wait for a conventional sale gets immediate relief and keeps their credit intact as long as the buyer performs. But the arrangement depends on cooperation the lender never agreed to, and either party can end up badly hurt when things go wrong.
The Due-on-Sale Clause Is the Central Risk
Nearly every residential mortgage contains a due-on-sale clause. Federal regulations define it as a contract provision letting the lender declare the entire remaining balance immediately due and payable when the property is sold or transferred without the lender’s written consent.1eCFR. 12 CFR Part 191 – Preemption of State Due-on-Sale Laws Recording a new deed in the buyer’s name is exactly the kind of transfer that can trigger it.
If the lender calls the loan, the full balance is due immediately. Failure to pay it means foreclosure. The buyer can lose the property along with any money invested; the seller ends up with a foreclosure on their credit and potential liability for any deficiency. Both sides get hit.
In practice, lenders often don’t enforce the clause on a loan that keeps getting paid on time. Foreclosure is expensive, and a performing loan gives the lender little reason to spend money on it. The calculation shifts, though, when the loan’s rate is well below current market rates: the lender then has a financial incentive to accelerate and redeploy the capital. Enforcement is uncommon but never impossible, and the buyer has no legal right to prevent it. That risk sits over the entire deal for as long as the original loan exists.
The Garn-St. Germain Carve-Outs
The Garn-St. Germain Depository Institutions Act of 1982 lists specific transfers on residential properties with fewer than five units where lenders are prohibited from enforcing the due-on-sale clause: transfers to a spouse or children, transfers resulting from divorce, transfers after a borrower’s death, and transfers into a living trust where the borrower remains a beneficiary and occupancy doesn’t change.2Office of the Law Revision Counsel. 12 USC 1701j-3 – Preemption of Due-on-Sale Prohibitions
Subject-to investors sometimes structure deals around the trust exemption: the seller moves the property into a land trust naming themselves as beneficiary, and the beneficiary interest is later transferred to the buyer. Whether this shields the transaction is contested. The statute requires the borrower to remain a beneficiary, and the regulations expect the borrower to remain an occupant. A lender that looks at the arrangement and finds the original borrower is neither has a strong argument that the exemption doesn’t apply.2Office of the Law Revision Counsel. 12 USC 1701j-3 – Preemption of Due-on-Sale Prohibitions
Insurance Is Where These Deals Quietly Fall Apart
The seller’s homeowner’s policy names the seller as insured. Once title moves, that policy no longer matches actual ownership, and most insurers will cancel if they learn of the transfer. The buyer needs a policy of their own in place at or before closing. For a rental hold, that’s a landlord policy rather than a standard homeowner’s policy, and it has to name the existing mortgage lender as loss payee because the loan documents require it.
Getting this wrong causes two failures at once. A claim can be denied because the insured party doesn’t match the recorded owner. And the lender, seeing a gap in coverage or a new insurance company it doesn’t recognize, may force-place expensive coverage or start looking at the loan more closely, which is exactly the sort of attention that can lead to the due-on-sale clause being invoked. The way to avoid it is unglamorous: bind the new policy with the lender listed as loss payee before the seller cancels the old one, so the lender’s escrow records never show a gap.
The Documents That Make the Deal Enforceable
A subject-to closing produces a stack of documents that work together. Missing any of them leaves one side exposed.
The deed transfers legal title. A special warranty deed is common, meaning the seller guarantees clear title only against defects arising during their own ownership. It’s recorded with the county to make the transfer official.
A promissory note between buyer and seller — separate from the note the seller signed with the bank — documents the buyer’s promise to make the mortgage payments and spells out what happens on default. Without it, the seller has no written recourse if the buyer walks away. The note usually mirrors the existing loan’s payment schedule and gives the seller specific remedies, such as the right to reclaim the property through a deed held in escrow or a privately recorded deed of trust.
A servicing agreement sets up how payments flow. The strongest version uses an independent third-party loan servicer that collects from the buyer, remits to the lender, and sends monthly statements to both parties. The seller gets verifiable proof that payments are being made. The buyer gets a documented payment record. This paper trail matters far more later than it seems to at closing.
A limited power of attorney from the seller lets the buyer contact the lender about insurance updates, escrow questions, and payoff requests, because the lender will only speak to the borrower of record. The scope should be narrow: account inquiries and insurance, not loan modifications or new borrowing against the property.
Because no new financing is being originated, the transaction doesn’t require the Closing Disclosure that accompanies conventional mortgage originations.3Consumer Financial Protection Bureau. What Is a HUD-1 Settlement Statement? The closing runs on a settlement statement, often a modified HUD-1, that itemizes the purchase price, the loan balance being taken subject-to, and prorations for taxes and insurance.4HUD. Fill-able HUD-1 Settlement Statement Line 203 on the HUD-1 is literally labeled “Existing loan(s) taken subject to,” which is why the form has survived for these deals.
What Staying on the Loan Does to the Seller
The mortgage stays on the seller’s credit report and counts against the seller’s debt-to-income ratio for as long as the loan exists. Sellers routinely miss this until they try to buy their next home or refinance another property and discover a phantom debt on their file.
Fannie Mae’s underwriting guidelines allow a lender to exclude that mortgage from the seller’s DTI, but only if the person making the payments is obligated on the debt, there have been no late payments in the most recent 12 months, and the seller isn’t using rental income from the property to qualify. Twelve months of canceled checks or bank statements from the buyer are required as proof.5Fannie Mae. Monthly Debt Obligations USDA loan guidelines follow a similar 12-month rule for debts transferred without a release of liability.6U.S. Department of Agriculture. HB-1-3555, Chapter 11 – Ratio Analysis
The practical effect is that for at least a year after closing, the seller usually can’t qualify for a new mortgage at competitive terms, because the subject-to loan inflates their debt ratio. Even after that year, the exclusion depends on clean documentation from the servicer. One late payment inside the 12-month window wipes out the relief. That’s why the servicing agreement matters as much to the seller as it does to the buyer.
There Are Tax Consequences on Both Sides
A subject-to sale is still a sale for tax purposes. For the seller, the IRS treats it as a disposition even though the mortgage wasn’t paid off, and the outstanding loan balance the buyer takes over is included in the amount realized. That often means the sale price for tax purposes is higher than the cash the seller actually receives. The primary-residence exclusion of $250,000 for single filers and $500,000 for married joint filers can apply if the property was the seller’s home for at least two of the last five years; investment properties get no such shelter.7Internal Revenue Service. Sale of Your Home
For the buyer, claiming the mortgage interest deduction is complicated because the loan isn’t in your name. IRS Publication 936 requires ownership of the property and that the mortgage be a secured debt on a qualified home; the ownership piece is satisfied by the deed, but the “secured debt” analysis when the mortgage sits in someone else’s name is an area where a tax professional’s judgment on your specific facts is worth more than any general rule.8Internal Revenue Service. Publication 936, Home Mortgage Interest Deduction For an investment property, the interest may travel through as a business expense instead.
Federal Equity Skimming Is a Criminal Boundary
If the loan you’re taking subject-to is FHA-insured or VA-guaranteed, one specific pattern crosses from civil risk into federal crime. The equity skimming statute reaches anyone who purchases a one-to-four-unit dwelling with a federally insured or VA-guaranteed loan that is in default or goes into default within a year of purchase, fails to make the mortgage payments, and diverts rental income for personal use. The penalty is a fine up to $250,000, up to five years in prison, or both.9Office of the Law Revision Counsel. 12 USC 1709-2 – Equity Skimming; Penalty; Persons Liable; One Dwelling Exemption
A buyer of only one such property is exempt, so the statute targets a pattern rather than a one-time buyer who falls behind. But it applies regardless of whether you’re formally on the loan; the “whether or not the purchaser is obligated on the loan” language was written with subject-to deals in mind.9Office of the Law Revision Counsel. 12 USC 1709-2 – Equity Skimming; Penalty; Persons Liable; One Dwelling Exemption If you’re buying FHA or VA properties this way, payment discipline isn’t optional.
How the Deal Eventually Ends
Most subject-to buyers plan to refinance the property into their own name within a few years, sell it at a profit, or hold until the original loan is paid off. Each path has different implications for how long the seller stays tied to the debt. A well-drafted promissory note between the parties includes a deadline for the buyer to either refinance the seller out or return the property, so the seller isn’t left indefinitely carrying a mortgage on a house they no longer own.