Assumable mortgages: taking over a seller’s low rate, and what it really costs
When older loans carry rates well below what is available today, the loan itself becomes part of what is for sale. An assumption transfers the seller’s existing mortgage — rate, balance and remaining term — to the buyer. It is a real option on some loans, an impossibility on most, and it always runs into the same obstacle: the equity gap.
Which loans can be assumed
| Loan type | Assumable? | Approval needed |
|---|---|---|
| FHA | Yes | Servicer creditworthiness review; buyer must occupy |
| VA | Yes | Servicer or VA approval; buyer need not be a veteran |
| USDA | Generally yes | Agency approval; buyer must meet income and area eligibility |
| Conventional fixed-rate | Almost never | Due-on-sale clause lets the lender call the balance |
| Conventional ARM | Sometimes | Only if the note says so, often after the fixed period |
The reason conventional loans sit at the bottom of that table is the due-on-sale clause: on transfer of the property, the lender may demand the full balance. Federal law carves out transfers the clause cannot be used against — on death of a borrower, between spouses in a divorce, into a living trust the borrower controls — but those are family transfers, not sales to a buyer. Some adjustable-rate conventional notes are written as assumable after the initial fixed period; the note itself is the only place to check.
The equity gap is the real obstacle
An assumption transfers the balance, not the price. The buyer has to fund everything above it. Take a $420,000 purchase with a $265,000 balance remaining on a 3.25% FHA loan: the buyer needs $155,000, plus closing costs, out of pocket or from other financing.
That is why most low-rate assumptions never happen — the gap is larger than a normal down payment. Where it is bridged, it is usually with cash, or with a second lien behind the assumed loan, which a limited number of lenders will write. Run the blended cost before deciding it is a bargain. In the example, $265,000 at 3.25% plus $155,000 of second-lien money at an illustrative 9% blends to roughly 5.4% across the $420,000 — still meaningfully below a single new loan at an illustrative 6.5%, but nowhere near the headline 3.25%. The payment tables under monthly payment by loan amount and rate make the comparison concrete on your own numbers.
What it costs and how long it takes
- FHA. The servicer runs a creditworthiness review for loans originated after 1986, and the buyer must intend to occupy. There is generally no new appraisal, because the loan is not being re-underwritten to a new value. Annual mortgage insurance continues on the loan’s existing terms — including, on many post-2013 loans, for the life of the loan.
- VA. A funding fee of 0.5% of the balance applies, plus a lender processing charge that VA caps (commonly cited at $300; ask the servicer for the figure in writing). Borrowers exempt from the funding fee are generally exempt here too. The buyer does not have to be a veteran.
- USDA. Assumptions require agency sign-off, and the buyer normally has to meet the same income and rural-area eligibility that applies to a new loan.
- Time. Assumptions are processed by servicing departments that handle few of them, and 45 to 90 days is a realistic range rather than a promise. Build the risk into the contract with a long closing date and a contingency, and keep every request in writing.
If a servicer stops responding altogether, borrowers may submit a complaint to the CFPB, and a HUD-approved housing counselor will review the situation free of charge. We are not a lender or a servicer and cannot process an assumption.
The seller’s side: liability and entitlement
Two things can go badly wrong for a seller, and both are avoidable.
Release of liability. Unless the servicer issues a formal release, the seller stays legally responsible for a loan secured by a house someone else owns. If the buyer stops paying, it is the seller’s credit and, in a deficiency state, potentially the seller’s money. Do not close an assumption on the strength of a verbal assurance; the release is a document.
VA entitlement. A veteran seller’s entitlement remains tied to the assumed loan unless an eligible veteran buyer completes a substitution of entitlement. Sell to a non-veteran and the entitlement stays locked up, which can limit the seller’s ability to use the benefit again on the next purchase. The veterans and service members page covers how the benefit works more broadly.
Traps worth naming
- “Subject-to” is not an assumption. Buying subject to an existing mortgage without the lender’s approval leaves the loan in the seller’s name and exposes both parties to a due-on-sale acceleration. It is a different transaction with different risks.
- Fee-charging middlemen. Services have appeared that market assumption processing to buyers and agents. Some do useful work; be clear about what is charged, what is guaranteed, and whether the servicer requires them at all — it generally does not.
- The escrow account. The seller’s escrow balance is normally refunded to the seller and re-funded by the buyer at closing. Budget for it; it is real cash. Our guide to escrow accounts explains the cushion rules.
- The rate is not the whole loan. A 27-year remaining term, an FHA mortgage insurance premium that never cancels, or a balance small enough that the low rate saves little can all undercut the arithmetic. Compare total cost, not the coupon.
Frequently asked questions
Can I assume a conventional loan?
Rarely. Standard Fannie Mae and Freddie Mac fixed-rate notes contain a due-on-sale clause and are not assumable in a sale. Some conventional ARMs allow assumption under the terms written into the note, so read it rather than relying on a general answer. The comparison of loan types is in our guide to conventional vs FHA vs VA vs USDA.
Does the buyer need to qualify?
Yes, on FHA, VA and USDA assumptions. The servicer reviews credit, income and debts much as it would on a new application, so a buyer who could not get approved for a mortgage generally cannot assume one either.
Does an assumption require a new appraisal?
Usually not, since the loan amount is fixed by the existing balance rather than by a new valuation. A second lien used to cover the equity gap may require its own appraisal.
How do I find out whether a listing’s loan is assumable?
Ask the seller for the loan type and servicer, and have them request the servicer’s assumption package. Listing remarks are marketing; the note and the servicer’s written policy are the facts. Questions can also be sent to us at mail@noreply.claude-loan.com — we answer within 24 to 48 hours and we do not sell loans.
Sources
Related: USDA vs VA vs FHA vs conventional: the four loan types compared, Rate-and-term refinance: when it pays, how to compute the break-even, Mortgage underwriting: what happens between pre-approval and clear to close, Conventional loan requirements in 2026: what Fannie Mae’s guide actually says. Hub: Conventional loan.