A conventional loan can be assumed, but almost never in an ordinary sale. Nearly every conventional mortgage contains a due-on-sale clause that lets the lender demand the full balance the moment ownership changes, which shuts down assumption for a market buyer. Federal law carves out a narrow set of family, death, divorce, and trust transfers where the lender is not allowed to enforce that clause, and those are the situations where a conventional loan actually can be taken over.
Why a Regular Buyer Can’t Assume One
The due-on-sale clause is standard language in conventional mortgage contracts. It gives the lender the right to accelerate the loan, meaning demand immediate repayment of the entire remaining balance, if the property is sold or transferred.1Office of the Law Revision Counsel. 12 USC 1701j-3 – Preemption of Due-on-Sale Prohibitions Lenders keep the clause in place so they can close out older, lower-rate loans and reissue at whatever the market rate happens to be when a property changes hands.
Because the lender can call the balance due the instant title moves, a buyer in a typical purchase cannot step into the seller’s mortgage. They have to apply for a new loan at current rates. That is why assumptions in the ordinary sense are associated with FHA and VA loans rather than conventional ones.
The Transfers a Lender Cannot Block
The Garn-St. Germain Depository Institutions Act of 1982 overrides the due-on-sale clause for a defined set of transfers. When one of these applies, the lender is legally prohibited from accelerating the loan.1Office of the Law Revision Counsel. 12 USC 1701j-3 – Preemption of Due-on-Sale Prohibitions
Death of a Borrower or Joint Owner
A lender cannot invoke the due-on-sale clause when property ownership passes because a joint tenant or tenant by the entirety dies. The same protection applies when a borrower dies and title transfers to a relative. The heir can continue paying on the existing loan.
Transfers to a Spouse or Child
When a borrower’s spouse or children become owners of the property, the lender cannot accelerate the loan. This covers lifetime transfers as well as transfers ordered as part of a divorce or legal separation. If a court decree or separation agreement makes the borrower’s spouse an owner, the clause does not apply.
Transfers to a Living Trust
Moving a property into an inter vivos trust is protected as long as the borrower stays a beneficiary of the trust and the transfer does not shift who has the right to occupy the home.
One limit worth knowing up front: these protections apply only to residential property with fewer than five dwelling units, though that includes cooperative housing and manufactured homes. A five-unit or larger building with a conventional loan does not get the shield.
Who Covers the Equity Gap
Assuming a loan means taking over the remaining balance, not the full value of the home. If a house is worth $400,000 and the mortgage balance is $250,000, someone has to account for the $150,000 of equity.
For an inherited property, that equity passes to the heir along with the mortgage. In a divorce, the spouse keeping the home usually owes the departing spouse a share of the equity through the property settlement, which may mean refinancing, using savings, or offsetting against other marital assets. For a lifetime transfer to a spouse or child, the equity portion may be treated as a gift for tax purposes.
How to Complete an Assumption
Start by contacting the mortgage servicer, which is the company that receives your monthly payments and may not be the original lender. Ask for the assumption or transfer-of-ownership department and request the application package. Some servicers have dedicated forms; others handle these requests through their loss mitigation teams.
You will need to prove the qualifying event. Typical documents include:
- A certified death certificate for the borrower or joint tenant
- The divorce decree or separation agreement transferring ownership
- Trust documents showing the borrower as a current beneficiary
- A recorded quitclaim or other deed showing title has changed
If you are not asking for the original borrower to be released and the servicer is not evaluating your credit, financial documentation stays light. If you request a release of liability, or if the servicer requires credit approval, expect a full underwriting review with two years of tax returns, recent pay stubs, and a credit pull. Fannie Mae’s guidelines cap the debt-to-income ratio for manually underwritten loans at 36%, with room up to 45% if you meet additional credit and reserve requirements, and up to 50% through automated underwriting.2Fannie Mae. B3-6-02, Debt-to-Income Ratios
Keep paying the mortgage on schedule while the request is under review. A missed payment can push the loan into default regardless of the pending assumption.
Once approved, you will sign an assumption agreement, a notarized contract that makes you personally responsible for the remaining principal, interest, and escrow obligations. You will also need a new homeowner’s insurance policy in your name, since existing policies do not transfer.
What It Costs
Fannie Mae’s servicing guidelines set the fee schedule. If the transfer does not require a credit review, the fee is $100. If credit approval or a release of liability is involved, the fee is the greater of $400 or 1% of the remaining balance, capped at $900, and the servicer can pass along the actual cost of the credit report.3Fannie Mae. Fees for Certain Servicing Activities
On top of that, county recording fees for a new deed or assumption agreement vary by jurisdiction, and some places charge transfer taxes when property changes hands. Many exempt transfers between family members or at death, but you should confirm locally.
Getting the Original Borrower Off the Loan
An assumption puts the new borrower on the loan; it does not automatically remove the original one. Without a formal release of liability, the original signer stays responsible for the debt. If the new owner later misses payments, that hits the original borrower’s credit, and the lender can still pursue them for any shortfall.
To grant a release, the servicer has to be satisfied that the new borrower can handle the loan. If the mortgage carries private mortgage insurance, the mortgage insurer also has to sign off. If the insurer refuses, the servicer must deny the release even when the new borrower is otherwise qualified.4Fannie Mae. Reviewing a Transfer of Ownership for Credit and Financial Capacity The assumption itself can still proceed under Garn-St. Germain, but the original borrower stays on the debt.
If you are the original borrower, push for the release as part of the process. Until it is granted or the loan is paid off, the mortgage keeps showing up on your credit report and counts against your debt-to-income ratio for any future borrowing.
Tax Angles to Know
The IRS treats an assumed loan balance as part of what the transferor “realized” on the property. If that amount, combined with any cash or other consideration, exceeds the transferor’s adjusted basis in the home, there is a capital gain, even in family transfers where no money changes hands.5Internal Revenue Service. Property (Basis, Sale of Home, Etc.) 3
If the home was the transferor’s primary residence, up to $250,000 of gain ($500,000 for married filing jointly) can be excluded under the standard home-sale exclusion, provided the ownership and use tests are met for two of the previous five years.6eCFR. 26 CFR 1.121-1 – Exclusion of Gain From Sale or Exchange of a Principal Residence
Lifetime transfers to a spouse or child can also trigger gift tax reporting. For 2026, the annual gift tax exclusion is $19,000 per recipient and the lifetime exemption is $15,000,000.7Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 If the equity being transferred is more than the annual exclusion, a gift tax return is required, though no tax is due until the lifetime exemption is used up. Inherited property generally gets a stepped-up basis equal to the fair market value at the date of death, which can wipe out most or all of the built-in gain when the heir later sells.
If the Servicer Denies a Protected Transfer
If your situation falls within a Garn-St. Germain exception, the lender is not legally permitted to enforce the due-on-sale clause. A denial in that scenario may be a servicer error rather than a lawful decision. Request the denial in writing and compare the stated reason against the specific statutory exceptions.
You can file a complaint with the Consumer Financial Protection Bureau, which will route the complaint to the servicer and require a response.8Consumer Financial Protection Bureau. Submit a Complaint If the servicer has already moved to accelerate the loan, a real estate attorney is the next call. Because Garn-St. Germain is federal law, a wrongful acceleration can expose the servicer to liability.