A subject to real estate transaction is one where the buyer takes the deed and becomes the legal owner, but the seller’s existing mortgage stays in place and keeps the seller’s name on the loan. The buyer makes the monthly payments on that original loan without ever formally borrowing the money or getting the lender’s approval. Investors use the structure to acquire property without qualifying for new financing, and sellers sometimes accept it to get out from under a payment they can no longer afford. The arrangement works, but it carries risks on both sides that are easy to miss until something goes wrong.
How a Subject-To Deal Works
The buyer receives the deed and records it. From that point forward, the buyer owns the property. The seller’s mortgage, however, is untouched. Same borrower on the lender’s records, same interest rate, same remaining balance, same monthly payment. The buyer sends in the payments each month, but the lender’s paperwork still shows the seller as responsible for the debt.
Because the lender’s lien predates the transfer, the buyer’s ownership is subordinate to it. If payments stop, the lender forecloses on the property regardless of whose name is on the deed. The seller stays personally liable on the note the entire time. A subject-to transfer moves occupancy and the practical burden of payment; it does not release the seller from the mortgage.
Equity gets handled a few different ways. If the seller has little or no equity, the buyer may pay nothing beyond taking over the payments. When there is meaningful equity, the buyer typically pays a lump sum at closing, signs a promissory note for the difference, or does some mix of both. The terms are whatever the two sides agree to.
Subject-To vs. a Formal Loan Assumption
These two get confused often, and the difference matters. In a formal loan assumption, the lender reviews the new buyer’s credit, approves the transfer, and shifts liability from seller to buyer. The seller receives a written release. In a subject-to deal, the lender is not involved and usually isn’t even told.
For FHA loans originated after December 15, 1989, HUD requires a creditworthiness review whether the buyer formally assumes the loan or just takes title subject to it. When a formal assumption happens, the lender prepares a release of liability for the original borrower using HUD Form 92210.1.1Department of Housing and Urban Development (HUD). Chapter 7 – Assumptions No equivalent release exists for a subject-to transfer. An assumption cleanly severs the seller’s connection to the loan. A subject-to deal leaves the seller tied to it until the loan is paid off or refinanced.
The Due-on-Sale Problem
Almost every residential mortgage contains a due-on-sale clause that lets the lender demand the full remaining balance if the property changes hands without the lender’s consent. This is the structural risk in any subject-to transaction. If the lender finds out about the transfer and chooses to call the loan, the buyer must pay the whole balance or lose the property to foreclosure.2Office of the Law Revision Counsel. 12 US Code 1701j-3 – Preemption of Due-on-Sale Prohibitions
The Garn-St. Germain Depository Institutions Act bars lenders from enforcing the clause on residential property with fewer than five units in a handful of specific situations:2Office of the Law Revision Counsel. 12 US Code 1701j-3 – Preemption of Due-on-Sale Prohibitions
- A transfer to a relative when a borrower dies, or an automatic transfer through joint tenancy.
- A transfer to a spouse under a divorce decree or property settlement.
- A transfer where the borrower’s spouse or children become owners.
- A transfer into a living trust where the borrower stays a beneficiary and continues living in the home.
- Junior liens, like a second mortgage or home equity line, that don’t shift occupancy.
- Leases of three years or less with no purchase option.
A sale to an unrelated investor isn’t on that list. A standard subject-to deal between a distressed seller and an investor doesn’t qualify for any Garn-St. Germain exception. Whether lenders actually call loans in practice is a different question. Many don’t, especially when payments arrive on time. The legal right to do it is always there.
Risks for the Seller
The seller’s name stays on the mortgage. Every late payment the buyer makes shows up on the seller’s credit report. If the buyer stops paying, the lender forecloses, and the foreclosure lands on the seller’s credit. The outstanding balance also keeps counting against the seller’s debt-to-income ratio, which can block them from qualifying for a new home loan until the property gets refinanced or sold again.
Risks for the Buyer
The due-on-sale clause hangs over the loan for its entire life. Beyond that, the buyer has no direct relationship with the lender, which means statements, escrow shortage notices, and insurance warnings may never reach them. If the original loan had an escrow account funding property taxes and insurance, the buyer has to make sure those obligations stay funded. A lapse in either one can trigger lender action or leave the property uninsured.
How Sellers Can Protect Themselves
The most common safeguard is a performance deed of trust, sometimes called a deed of trust to secure assumption. This gives the seller a secondary lien on the property. If the buyer defaults, the seller can start foreclosure proceedings, often through a faster non-judicial process, and take the property back before the primary lender acts. It doesn’t eliminate risk, but it gives the seller a way to intervene instead of watching their credit erode.
Sellers should also insist on routing payments through a third-party loan servicing company. When the buyer pays the servicer and the servicer pays the lender, the seller gets an independent record of on-time payment and often immediate notice of a missed one. The written agreement should spell out what counts as default, how fast the seller gets notified, and what remedies the seller has.
Tax Consequences for the Seller
Sellers sometimes assume that walking away without a check means walking away without a tax bill. The IRS doesn’t see it that way. When you calculate the sale price of a home, you have to include any debt the buyer takes over as part of the deal.3Internal Revenue Service. Publication 523 (2025), Selling Your Home Sell a property with a $200,000 mortgage balance subject to that mortgage, and the IRS counts the $200,000 toward your sale price even though no money changed hands for it.
The seller’s “amount realized” is the mortgage balance plus any cash received plus the fair market value of anything else received, minus selling expenses.4Internal Revenue Service. Property (Basis, Sale of Home, etc.) 3 If that figure exceeds the seller’s adjusted basis, capital gains tax applies. The home sale exclusion ($250,000 for single filers, $500,000 for married couples filing jointly) can shelter some or all of the gain if the seller used the property as a primary residence for at least two of the last five years. A seller who held the property as an investment, or lived there only briefly, could face a real tax bill from a deal that produced no cash.
Documents, Title, and Closing
Before closing, the buyer needs specific financial information about the existing loan: the current payoff balance, interest rate, monthly payment including any escrow, the servicer’s contact information, and the loan number. The legal description of the property, as it appears on the existing deed, has to be copied onto the new deed exactly.
A preliminary title report is essential. It surfaces every recorded lien and claim against the property, including judgment liens, federal and state tax liens, child support liens, second mortgages, and mechanic’s liens. Each of these has to be resolved before or at closing, because the buyer takes the property subject to all existing encumbrances, not only the first mortgage. A $2,000 title search is cheap compared to finding a $40,000 IRS lien after the deed is recorded.
The transfer uses a grant deed or warranty deed depending on the jurisdiction. The deed identifies grantor and grantee by legal name and references the existing mortgage so the record is clear that the property transfers subject to that lien. Both parties sign before a notary, and the deed goes to the county recorder.
Insurance is where people most often make a mistake. The buyer has to get a new property insurance policy naming themselves (or their holding entity) as the insured. Being added as an “additional insured” on the seller’s existing policy is not enough. If the insurer learns the policyholder no longer owns the property, claims can be denied. The new policy has to list the existing lender in the mortgagee clause and carry coverage at or above the loan balance. When the new policy takes effect, the seller’s old policy usually gets cancelled, and the lender receives notice of the change. That moment is often when a lender first notices the transfer.
Property taxes remain the responsibility of whoever holds title, which after closing means the buyer. Missed property taxes create a tax lien that takes priority over the existing mortgage, so routing taxes and insurance through a third-party escrow or servicer gives both parties a documented record that the obligations are being met.