A subject-to transaction in real estate is a sale in which the buyer takes the deed to a property and begins making the payments on the seller’s existing mortgage, while the loan itself stays in the seller’s name. The lender is usually not told. It lets a buyer acquire property without qualifying for new financing and lets a seller move a property fast, but both sides carry risks that most people underestimate going in.
How the Mechanics Work
On paper it is simple. The seller signs a deed transferring ownership to the buyer, and that deed is recorded at the county recorder’s office like any other transfer. The mortgage does not move. The lender’s records still list the seller as the borrower on the promissory note. The buyer starts making the monthly payments on the seller’s loan, either directly to the lender or through a third-party servicer.
The purchase price usually accounts for the loan balance. If a property is worth $300,000 and the seller owes $220,000, the buyer might pay the seller $80,000 in cash or through a separate promissory note for the equity and keep paying the existing $220,000 loan. The lender is typically not notified of the ownership change, and that silence is where most of the risk enters.
Subject-To Compared With Loan Assumption and Wrap-Around Mortgages
Subject-to deals are often confused with formal loan assumptions, but they are not the same thing. In a loan assumption, the buyer applies with the lender, goes through credit and income underwriting, and formally takes over the mortgage. Depending on the loan type, the seller may be released from liability. A subject-to buyer never qualifies with the lender, and the seller stays on the hook for the debt.
A wrap-around mortgage sits between the two. The seller creates a new loan to the buyer that wraps around the existing mortgage. The buyer pays the seller, and the seller uses part of that money to keep the original mortgage current. The wrap usually carries a higher rate than the underlying loan so the seller earns the spread. Unlike a straight subject-to, a wrap creates a formal lender-borrower relationship between seller and buyer, which pulls in extra regulatory obligations.
The Due-on-Sale Clause
The largest legal risk in a subject-to deal is the due-on-sale clause. Federal law authorizes lenders to include this provision, and virtually every conventional mortgage has one. It lets the lender demand full repayment of the balance if the property is sold or transferred without written consent.1Office of the Law Revision Counsel. 12 USC 1701j-3 Preemption of Due-on-Sale Prohibitions
In practice, lenders do not always call the loan. If payments arrive on time and the existing rate is below current market rates, many lenders have little reason to accelerate. But “usually doesn’t” is not the same as “can’t.” If the lender discovers the transfer and calls the loan, the buyer has to pay off the entire balance or refinance immediately. If neither is possible, the property faces foreclosure.
Federal Exceptions to Due-on-Sale Enforcement
Federal law bars lenders from enforcing a due-on-sale clause on residential property with fewer than five units in a specific list of situations. These exceptions cover family and estate-driven transfers, not arm’s-length sales:
- A transfer to a relative after the borrower dies, or an automatic transfer through joint tenancy or tenancy by the entirety on the borrower’s death.
- A transfer to a spouse resulting from a divorce decree, legal separation agreement, or property settlement.
- A transfer to the borrower’s spouse or children.
- A transfer into a revocable living trust in which the borrower stays a beneficiary and continues to occupy the home.
- A lease of three years or less with no purchase option.
- A subordinate lien that does not transfer occupancy rights.
These come from the federal statute and its implementing regulation.2eCFR. 12 CFR 191.5 Limitation on Exercise of Due-on-Sale Clauses A standard subject-to sale to an unrelated buyer is not on the list. The typical deal falls squarely inside what the clause is written to catch.
What the Seller Is Exposed To
The seller carries the heaviest weight in a subject-to deal, because they lose control of the property while keeping full legal responsibility for the loan. The mortgage stays on the seller’s credit report. Every late or missed payment by the buyer hits the seller’s score. If the buyer stops paying, the lender does not chase the buyer. The lender chases the seller, who is the only person who signed the note.
Foreclosure is a real possibility, and it lands on the seller’s record. A deficiency judgment is possible if the foreclosure sale does not cover the balance, depending on state law. In the meantime, the outstanding mortgage counts against the seller when they apply for their next home loan, cutting into their borrowing capacity.
The seller also has no reliable way to check whether the buyer is maintaining the property, paying taxes, or keeping insurance in force. An unpaid property tax bill becomes a lien. A lapsed insurance policy plus a fire leaves the seller still owing on a mortgage with worthless collateral.
What the Buyer Is Exposed To
The buyer’s most immediate risk is the lender calling the loan. If the buyer cannot refinance or pay it off, they lose the property along with any down payment, equity, and improvement costs already sunk in.
The buyer also has no formal relationship with the lender. The lender is not required to send the buyer statements, share the payment history, or notify them about escrow changes. If the seller was behind on payments before closing, or if there is a second lien nobody surfaced, those problems become the buyer’s problem to solve without any legal standing to talk to the lender. Getting the seller to sign a written authorization that lets the lender release loan information to the buyer is a basic step, and it is often skipped.
Title insurance can also be difficult. Some title companies will not insure a subject-to transaction because the existing mortgage clouds the picture. Without a policy, the buyer has no protection against undisclosed liens, boundary problems, or other title defects.
Insurance Has to Change at Closing
Insurance is one of the most commonly mishandled parts of a subject-to deal. The seller’s homeowner’s policy was written on the assumption that the seller owns and lives in the property. Once the deed transfers, the seller does neither. A fire loss under the old policy could be denied entirely because the named insured no longer owns or occupies the home.
The buyer needs a new policy naming themselves, or their entity, as the primary insured. A rental use calls for a landlord or non-owner-occupied policy rather than a standard homeowner form. The lender’s mortgagee clause must be listed correctly, and coverage should be at least the loan balance. The seller belongs on the liability portion as an additional interest only, not as a named insured on the property coverage. If the seller is a named insured on property coverage, any claim check will require their signature to cash, which becomes a problem if the seller becomes hard to reach.
Running the old and new policies together invites trouble. Excess clauses can let each insurer point at the other and reduce its payout. Once the buyer’s policy is in force, cancel the seller’s old one.
Tax Consequences
Mortgage Interest Deduction for the Buyer
A subject-to buyer faces an unusual question: can you deduct mortgage interest on a loan that is not in your name? The answer is potentially yes, if you can establish equitable ownership. Under federal tax regulations, a legal or equitable owner of real property can deduct mortgage interest on that property even if they are not personally liable on the note.3GovInfo. 26 CFR 1.163-1 Interest Generally
Courts look at whether the taxpayer holds the “benefits and burdens of ownership.” Occupying the property, paying the mortgage directly to the lender, paying the taxes, maintaining insurance, and handling repairs all support the claim. A buyer doing all of that has a reasonable argument for the deduction, but it is not automatic, and the IRS can push back. Keep detailed records and work with a tax professional familiar with creative financing.
Installment Sale Reporting for the Seller
For the seller, transferring the deed while the buyer takes the property subject to the existing mortgage can create an installment sale. Federal regulations address this directly. The contract price is calculated by reducing the selling price by the portion of the mortgage the buyer takes subject to, but only up to the seller’s adjusted basis in the property.4eCFR. 26 CFR 15a.453-1 Installment Method Reporting for Sales of Real Property
When the mortgage balance exceeds the seller’s basis, the excess is treated as a payment received in the year of sale. That can trigger a tax bill even though no cash changed hands for that portion. Sellers who qualify can still apply the home sale exclusion of up to $250,000 for single filers or $500,000 for joint filers.5Internal Revenue Service. Topic No. 701, Sale of Your Home
Federal Compliance Traps
Equity Skimming on Government-Backed Loans
Federal law imposes criminal penalties on a specific pattern involving subject-to deals with government-backed loans. A person who purchases properties with FHA-insured or VA-guaranteed mortgages that are in default (or fall into default within a year of purchase), fails to make the mortgage payments, and collects rent for personal use commits equity skimming. The penalty is a fine of up to $250,000, up to five years in prison, or both.6Office of the Law Revision Counsel. 12 USC 1709-2 Equity Skimming Penalty
The statute targets a scheme, not every subject-to. It requires a pattern or practice with intent to defraud, and applies only to loans insured or held by HUD or guaranteed by the VA. A single dwelling is explicitly exempt. Investors picking up multiple distressed properties on government-backed loans should understand that letting those mortgages slide while pocketing the rent is a federal crime, not just a contract breach.
Dodd-Frank Rules When the Seller Carries a Note
If a subject-to deal includes any seller-financing piece, such as the seller carrying a note for the equity, Dodd-Frank requirements can apply. Federal law defines a “mortgage originator” broadly, covering anyone who offers or negotiates terms of a residential mortgage loan, and originating without a license carries serious penalties.7Office of the Law Revision Counsel. 15 USC 1602 Definitions and Rules of Construction
Two exemptions matter most. The one-property exemption lets a natural person, estate, or trust provide seller financing on one property in any twelve-month period without being treated as a loan originator, provided the repayment schedule avoids negative amortization and any adjustable rate does not reset for at least five years. The three-property exemption extends to persons and entities financing up to three properties per year, but adds stricter terms: fully amortizing with no balloon payments, and a good-faith determination that the buyer can reasonably repay.8eCFR. 12 CFR 1026.36 Prohibited Acts or Practices and Certain Requirements for Credit Secured by a Dwelling Neither exemption reaches loans on vacant land, commercial property, or homes the buyer does not intend to occupy, and neither applies when the seller built the home.
Protections That Belong in the Written Agreement
A subject-to transaction without a thorough written agreement is reckless on both sides. At a minimum, the agreement should spell out the exact mortgage balance and payment schedule the buyer is taking on, who pays taxes and insurance, what counts as a default by either party, the remedies if one party breaches, and how the arrangement ends (a refinance deadline, a payoff timeline, or a triggering event). Both parties should have their own attorney review it.
Buyers should verify the loan independently before closing. Get the seller to sign an authorization so the lender can release loan information. Confirm the current balance, payment history, interest rate, remaining term, and whether any payments are past due. Pull a preliminary title report to check for second liens, HELOCs, and tax liens. Skipping this is how buyers find out months later that the loan was already two payments behind on the day they took over.
Sellers should push for a firm refinance deadline, often two or three years out, so the original mortgage gets paid off and the seller is released. Building that deadline into the agreement with consequences for missing it creates an exit rather than open-ended exposure. Requiring the buyer to make payments through a third-party loan servicer creates a clean paper trail confirming payments are on time.
Both sides benefit from an escrow arrangement in which a neutral party collects and pays property taxes and insurance. That removes the scenario where the buyer pockets tax money and lets the property fall into a tax sale, or lets coverage lapse quietly. The cost of a servicer or escrow agent is minor next to the damage a mismanaged subject-to can cause.