Assumable Mortgage: How It Works, and the Equity Gap

We represent NYC buyers, and this question spiked once rates climbed. A seller sitting on a 3% loan holds something a new buyer can’t get at any price today. It’s worth knowing exactly what transfers and what doesn’t, and pricing it against a normal purchase with a rebate before you chase a listing.

The rate carries over. The equity does not. Our mortgages and financing hub covers where an assumption fits among the other loan types.

Which mortgages are assumable

The government loans say yes and the banks say absolutely not. Here’s the split.

FHA loans. Every FHA-insured mortgage is assumable. Since 1989, the buyer goes through full underwriting: a credit score around 580 or higher, debt-to-income near 43% or below, proof of income and funds. The lender has up to 45 days to finish the review, and per HUD’s Mortgagee Letter 2024-16 can charge up to $1,800 for processing it. The buyer must live in the home. If they won’t, the lender must enforce the due-on-sale clause and demand payoff.

VA loans. VA loans made after 1988 can be assumed by anyone, veteran or not. A lot of guides get that wrong. The nuance that bites: when a non-veteran assumes, the seller’s VA entitlement stays tied to that property until the loan is paid off. It isn’t restored at closing, unlike when a VA-eligible buyer swaps in their own. Sellers should confirm how their servicer handles this first.

USDA loans. Assumable, but the buyer has to clear USDA’s rules: household income within the area limit, acceptable credit (lenders usually want 620+), standard debt ratios, owner-occupancy.

Conventional loans. Blocked by the due-on-sale clause, with two openings. The Garn-St Germain Act of 1982 stops a lender from enforcing that clause on a few transfers. Those are a transfer to a relative by death, to a spouse or child, or into a living trust where the borrower stays put. Fannie Mae also allows assumption of some first-lien ARMs before they convert to a fixed rate. Our guide to what a conventional loan is covers the rest.

The assumable mortgage process, step by step

It’s a full loan application for a loan you are not technically getting. Four stages:

1. Confirm it qualifies. The buyer or their agent contacts the seller’s servicer and verifies the loan is assumable and current.
2. Apply. The buyer submits income verification, a credit check, employment history, and bank statements. A complete underwriting file, even though the rate carries over untouched.
3. Underwrite. The servicer approves or denies. Assumption volume has surged, and not every servicer staffed up for it.
4. Close. The transfer records, and on an approved assumption the seller is released from liability. The VA non-veteran entitlement case is the exception.

Plan on 30 to 60 days, and 60 to 90 if the servicer is backlogged. That’s slower than buyers expect for a loan that’s technically “already approved.” Get a real mortgage commitment path in writing before you waive any contingency, and run the numbers with your rebate in them so you know the real cash to close. If a buyer takes over payments without the lender’s approval, the lender can call the full balance due at once.

The equity gap assumable mortgage buyers face

The seller’s low rate comes with the seller’s built-up equity attached. The equity gap is the cash difference between the purchase price and the balance the buyer takes over. It’s the single most common reason these deals die.

Say a home sells for $700,000 with $400,000 left on the assumable loan. The buyer needs $300,000 to close, minus their deposit. Three ways to bridge it:

• Cash. Cleanest, and often the only option the servicer allows.
• A second mortgage. Gap-financing runs roughly 8% to 11% today. Few lenders offer it, and the first servicer has to approve subordinating the second lien. Many refuse.
• Seller financing. The seller carries a note for part of the gap, if they’ll do it.

Even a pricey second loan can pencil out. A 2.5% first mortgage plus a 9% second, sized at a quarter of the price, blends to roughly 3.8%. That still beats a new 30-year loan at today’s rates.

Our guide to bridge loans covers the other way to cover a gap between deals. Price it with your rebate in it before you decide.

How to find assumable mortgages

The MLS has no checkbox for the best deal on it. A standard listing search won’t show the seller’s loan type or rate. A few platforms sprang up to fill that gap. Roam and Assumable.io scan for FHA, VA and USDA loans and estimate the rate, balance and savings.

Coverage and fees vary and change, so confirm current terms first. A local agent who can pull loan-type records from public filings, alongside those tools, is still the most reliable way to find a genuinely assumable listing on a specific block.

Assuming a mortgage after divorce or death

This is the one time the paperwork is on your side. Removing an ex-spouse or a deceased co-borrower from a loan, or taking title through inheritance, falls squarely inside the Garn-St Germain exceptions, so a conventional lender can’t invoke the due-on-sale clause.

The lender still checks that the remaining borrower can carry the loan alone: income, assets, credit. Loop in a real estate attorney early, because the documents here differ from a purchase assumption, and in New York the attorney runs this part of any deal.

What we tell NYC buyers about assumptions

The honest read: worth chasing on a house or condo, impossible on a co-op. A co-op purchase is financed with a share loan, not a mortgage, so there’s nothing to assume in the FHA or VA sense.

On a condo or a townhouse, there’s a quiet New York bonus. A true loan assumption originates no new loan, so it triggers no new mortgage recording tax, and on a large loan that tax is roughly 1.8% to 1.925% of the amount. Combined with a below-market rate, that’s real money, though your attorney should confirm it for your specific deal.

The work is in the diligence: confirming the loan is current, reading the assumption terms, pricing the equity gap before anyone signs. As Georges puts it, “it’s all about the numbers and the execution,” and an assumption has more of both than a normal purchase. That’s the part we handle, and on an average deal our commission rebate puts about $22,000 back at closing. Run the full picture on our closing cost calculators before you commit.

Common questions

Can I shop around for a better rate on an assumable mortgage? No. You’re locked into the seller’s lender, rate and remaining term. To compare rates you’d have to originate a new loan instead.

What happens if the home is worth more than the loan balance? That difference is the equity gap. You cover it with cash, a second mortgage if the servicer approves subordination, or seller financing.

Do I need a new appraisal to assume a mortgage? Often not, which is part of the cost savings. A home inspection is still worth ordering to catch repair issues.

How much does it cost to assume a mortgage? An FHA servicer can charge up to $1,800 for processing. A VA assumption carries a 0.5% funding fee on the remaining balance plus a capped processing fee. Add title, escrow and recording costs, still under a new loan’s origination costs.

Is a conventional mortgage ever assumable? Rarely. Only in Garn-St Germain situations, inheritance, transfer to a spouse or child, or into a qualifying trust, or for some adjustable-rate loans before the rate converts to fixed.

Written by Nicole Fishman Benoliel

Co-founder of NestApple and a lawyer admitted to the New York bar, not currently practising.