You usually cannot assume a conventional mortgage. Nearly every conventional loan contract contains a due-on-sale clause, and the two investors that own most of these loans — Fannie Mae and Freddie Mac — either prohibit third-party assumptions outright or allow them only when the current borrower is in financial trouble. The main exceptions are specific family transfers protected by federal law, a Fannie Mae hardship workout, or a loan the originating lender kept on its own books.
Why Conventional Loans Are Treated as Non-Assumable
A conventional mortgage is a home loan that is not insured or guaranteed by a federal agency such as the FHA, VA, or USDA.1Consumer Financial Protection Bureau. Conventional Loans Most of these loans are conforming, meaning they follow rules set by Fannie Mae or Freddie Mac, and lenders typically sell them to one of those investors soon after closing. Whoever ends up owning the loan sets the rules on whether someone new can take it over.
Freddie Mac states that most conventional mortgages, including the ones it backs, do not allow third-party assumptions.2Freddie Mac. What You Should Know About Mortgage Assumptions Fannie Mae permits assumptions only as a workout option when the existing borrower is already delinquent — not as a routine transaction between a seller and buyer on a performing loan.3Fannie Mae. Qualifying Mortgage Assumption Workout Option
The legal mechanism behind the restriction is the due-on-sale clause written into the mortgage contract. It gives the lender the right to demand the full remaining balance the moment the property’s title transfers to someone else. The Garn-St. Germain Depository Institutions Act of 1982 confirmed that federal law lets lenders enforce these clauses and overrides state laws that once limited them.4Office of the Law Revision Counsel. 12 USC 1701j-3 Preemption of Due-on-Sale Prohibitions Quietly deeding a house to a buyer without telling the servicer can trigger the loan being called due, and non-payment can lead to foreclosure.
Family Transfers the Lender Cannot Block
Federal law lists specific transfers of residential property with fewer than five units where a lender is prohibited from enforcing the due-on-sale clause. The recipient keeps the existing loan at its original rate and terms. The protected transfers are:4Office of the Law Revision Counsel. 12 USC 1701j-3 Preemption of Due-on-Sale Prohibitions
- A transfer to a relative after the borrower dies.
- An automatic transfer to a surviving joint tenant or tenant by the entirety.
- Any transfer that puts the borrower’s spouse or children on title, not just at death or divorce.
- A transfer to the borrower’s spouse under a divorce decree, separation agreement, or property settlement.
- Placing the property in a living trust where the borrower stays a beneficiary and occupancy doesn’t change.
- Adding a subordinate lien such as a second mortgage or HELOC, as long as occupancy rights don’t transfer.
- Granting a lease of three years or less with no purchase option.
These protections apply regardless of what the loan contract says, and they cover national banks, credit unions, and mortgage companies. What they do not do is create a market-rate assumption for unrelated buyers. They are limited to the family and estate situations above, and the person taking over the loan still has to keep making the monthly payments to avoid default.
The Two Realistic Paths for Everyone Else
A Fannie Mae Workout Assumption
Fannie Mae allows a servicer to approve an assumption when the current borrower is delinquent and cannot keep making payments. The servicer documents the hardship, then evaluates whether the prospective buyer meets Fannie Mae’s current underwriting standards.3Fannie Mae. Qualifying Mortgage Assumption Workout Option The servicer sends its recommendation to Fannie Mae, which sets the final terms and may require a cash contribution from the buyer.5Fannie Mae. Requesting Fannie Mae’s Approval Fannie Mae will not approve the assumption if there is a second mortgage or HELOC on the property unless it is paid off, and an appraisal is required as part of the review.
A Portfolio Loan
Some conventional loans are held on the originating lender’s own books instead of being sold to Fannie Mae or Freddie Mac. Portfolio lenders — often community banks and credit unions — set their own rules and can negotiate an assumption with a qualified buyer if they choose to. There is no standard process. The lender may require a fresh credit review, an updated appraisal, and an assumption fee, and terms depend entirely on the note language and the lender’s policy. If you already have a conventional loan or are trying to buy a home financed by one, calling the servicer to ask whether the note is portfolio-held is the only way to find out.
What the Buyer Has to Qualify For
Whoever agrees to allow the assumption — Fannie Mae through a servicer, or a portfolio lender directly — will underwrite the buyer close to how a new loan would be underwritten. Fannie Mae specifically requires the assuming borrower to meet its guidelines in effect at the time of qualification.3Fannie Mae. Qualifying Mortgage Assumption Workout Option That generally means:
- A credit history and score consistent with conventional underwriting, usually in the mid-600s or higher.
- A total debt-to-income ratio at or under Fannie Mae’s 36% standard maximum, with room up to 45% for stronger credit profiles.
- Recent pay stubs, two years of tax returns, and bank statements to document income and assets.
- Separate approval from the mortgage insurer if the loan carries private mortgage insurance. The insurer can reevaluate the new borrower’s risk on its own.3Fannie Mae. Qualifying Mortgage Assumption Workout Option
The transaction is documented through an assumption agreement issued by the servicer, along with the sales contract or transfer deed showing the intended ownership change.
The Equity Gap
Assumptions transfer the existing loan balance, not the price of the home. If a seller owes $250,000 on a house now worth $400,000, the buyer has to come up with $150,000 to cover the seller’s equity. That is the practical obstacle in most assumptions, even when the lender is willing.
Buyers typically bridge the gap one of two ways. Paying cash at closing is the simplest and requires the most liquidity. A second mortgage or home equity line can cover the difference, but that new loan carries today’s interest rate, which cuts into the savings the assumed loan was supposed to deliver. For a Fannie Mae workout assumption specifically, subordinate financing is not allowed to remain in place, so a piggyback second is generally not an option there.5Fannie Mae. Requesting Fannie Mae’s Approval Portfolio lenders may allow more flexibility, but it varies.
Release of Liability for the Seller
A seller does not automatically walk away from the debt when a buyer assumes the loan. Without a written release of liability from the lender, the original borrower is still legally on the hook. If the new owner stops paying, the lender can pursue the original borrower for the balance, and missed payments will hit their credit. Federal law provides an explicit release process for VA loans.6Office of the Law Revision Counsel. 38 USC 3714 Assumptions; Release From Liability Conventional assumptions have no equivalent statute, so a seller should make a written release from the lender a condition of the deal.
If You Are Chasing a Low Rate, Look at Government-Backed Loans Instead
Most people asking about assumptions are trying to inherit a low interest rate from a prior owner. That path is much more open on government-backed mortgages than on conventional ones.
- All FHA loans are assumable. The buyer must meet FHA credit and income standards, and the servicer processes the assumption under HUD guidelines.
- VA loans are assumable by any creditworthy buyer, veteran or not. The buyer has to qualify under VA credit standards, and the seller can request a release from liability once the assumption is approved.6Office of the Law Revision Counsel. 38 USC 3714 Assumptions; Release From Liability
- USDA-guaranteed loans are generally assumable, subject to lender approval and buyer creditworthiness.
Shopping specifically for a home already financed by FHA, VA, or USDA is a realistic strategy. Trying to assume a conventional loan from an unrelated seller usually is not.
Costs and Taxes If an Assumption Actually Closes
An assumption avoids loan origination fees and discount points, so total closing costs are usually lower than a refinance or new purchase loan. Buyers should still budget for an assumption fee (often 0.5% to 1% of the loan balance, or a flat charge), a title search and title insurance, county recording fees, any state or local transfer tax, notary fees, and attorney fees in states that require attorney closings.
A buyer who assumes a mortgage can generally deduct the mortgage interest on a federal tax return if they itemize and the home is a secured qualified residence. The IRS requires that the taxpayer have an ownership interest in the property and that the parties intend for the loan to be repaid.7Internal Revenue Service. Publication 936, Home Mortgage Interest Deduction If the Form 1098 is still issued in the previous owner’s name because the servicer hasn’t updated records, attach a statement to the return explaining how much interest was actually paid and who received the 1098.
Family transfers can also trigger gift tax reporting. If a parent transfers a $500,000 home with a $200,000 loan to a child who assumes the mortgage, the IRS may treat $300,000 of that as a gift. Each person can give up to $19,000 per recipient in 2026 without touching the lifetime exclusion, and the lifetime gift and estate tax exemption for 2026 is $15,000,000.8Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Most families will not owe gift tax because of that high lifetime limit, but any transfer above the annual exclusion still has to be reported on Form 709.