Assumable Loans: A Buyer’s Guide to VA, FHA, and USDA Options on Oʻahu

Picture buying a home and keeping the seller's mortgage rate along with it. That's what an assumable loan does. With 30-year rates averaging 7.40% in early October 2026, according to Freddie Mac's weekly survey, taking over a loan someone locked in at 3% can change what you can afford. I get asked about these a lot here on Oʻahu, so here's how they really work, what they cost, and where buyers get tripped up.

What is an assumable loan?

An assumable loan lets you take over the seller's existing mortgage: the remaining balance, the interest rate and the time left on the loan. You don't start over with a brand-new loan at today's rates. You pick up where the seller left off.

It isn't automatic, though. The lender (or loan servicer) has to approve you, and you'll go through underwriting much like you would for a new mortgage. Most conventional loans can't be assumed at all. The ones that can are usually government-backed: VA, FHA and USDA.

The three types of assumable loans

VA loans

VA loans are the most common assumable loans on Oʻahu, and for a simple reason. Thousands of military families are stationed at Joint Base Pearl Harbor–Hickam, Schofield Barracks and Marine Corps Base Hawaii in Kāneʻohe Bay, and many of them bought with VA loans when rates were low. When they get orders and sell, that loan can go with the house.

You don't have to be a veteran to assume a VA loan. According to the VA, any qualified buyer, including a non-veteran, can assume one as long as the loan is current and the buyer meets VA's credit and income standards. Here's what to know:

• Funding fee: The VA charges a funding fee of 0.5% of the loan balance on an assumption unless you're exempt. Per VA Circular 26-23-10, it has to be paid at closing and can't be rolled into the loan. On a $500,000 balance, that's $2,500.
• Entitlement: This part matters most to the seller, but you should understand it too. If you aren't a veteran, the seller's VA entitlement stays tied to the loan until it's paid off. If you're an eligible veteran with enough entitlement and you'll live in the home, you can swap your entitlement for theirs. That's called a substitution of entitlement, and it frees up the seller to use a VA loan again. Sellers often prefer veteran buyers for this reason.

FHA loans

FHA loans are assumable by qualified buyers. For most FHA loans (any closed on or after December 15, 1989), you must plan to live in the home as your primary residence, so they're not a tool for investors. The lender has to underwrite you by hand, and according to HUD's Handbook 4000.1 update, it can charge an assumption processing fee of up to $1,800. The loan's mortgage insurance stays with the loan.

USDA loans

USDA loans are for homes in eligible rural areas, so you'll see far fewer of them on Oʻahu than VA or FHA loans. Under federal rules (7 CFR 3555.256), you have to meet USDA's eligibility requirements, including its income limits, and the USDA has to approve the transfer. You can check whether a property's area is eligible on the USDA eligibility map.

How much can you actually save?

Here's some simple math. It's an illustration, not a quote. A $500,000 loan at 3% over 30 years works out to about $2,108 a month in principal and interest. The same $500,000 at 7.40% is about $3,462 a month. That's a difference of roughly $1,350 a month, before taxes and insurance.

In real life, the assumed loan will have fewer years left on it, so your payment will be a little different. You'll also pay it off sooner. The savings are still real, and that's why these listings get so much attention.

The down payment gap

This is where most assumable deals succeed or fall apart.

When you assume a loan, you take over the seller's remaining balance. Everything above that balance is yours to cover. The Honolulu Board of REALTORS® reports that the median Oʻahu single-family home sold for $1,110,000 in September 2026. Say a seller owes $650,000 on a VA loan at that price. That leaves a gap of $460,000 you'd need to bring in cash or cover with a second loan.

Some ways buyers handle it:

• Cash or savings. It's the simplest path, and it's how a lot of these deals close.
• A second loan. Some lenders offer a second mortgage that sits behind the assumed loan. Ask the servicer early whether they'll allow one, and run the blended payment to make sure it still beats a new loan.
• Shopping where the gap is smaller. Condos and homes the seller bought more recently tend to have smaller gaps. Oʻahu's median condo sold for $523,000 in September 2026, per the Honolulu Board of REALTORS®, so the gap there can be much more manageable.

If you're not sure what you can handle, my Oʻahu cost-of-living guide and the free Hawaiʻi Home Costs calculator can help you build a realistic monthly budget first.

How the process works, step by step

1. Get pre-qualified anyway. You'll still be underwritten, and a pre-approval also gives you a backup plan if the assumption falls through.
2. Confirm the loan is assumable. Ask for the loan type, the balance, the rate and the servicer's name before you write an offer. Not every listing says "assumable," and some sellers don't realize their loan qualifies, so it's worth asking.
3. Write the assumption into your offer. Your contract should say what happens if the servicer doesn't approve you, and how the gap will be paid.
4. Apply with the servicer. Send your documents quickly. Assumptions often take longer than a regular loan, and some servicers are slow, so build extra time into your closing date.
5. Close and get the paperwork right. Make sure the release of liability and any substitution of entitlement are documented at closing.

If you're selling instead, read my companion post, Assumable Loans: A Seller’s Secret Weapon in Today’s Market.

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Frequently asked questions

What is an assumable loan?

An assumable loan lets a home buyer take over the seller's existing mortgage, including its interest rate, remaining balance and terms, instead of starting a brand-new loan at today's rates. The lender or servicer must approve the buyer first.

Can a non-veteran assume a VA loan?

Yes. According to the VA, any qualified buyer, including a non-veteran, can assume a VA loan if the loan is current and the buyer meets VA's credit and income standards. The seller's VA entitlement stays tied to the loan unless an eligible veteran buyer substitutes their own entitlement.

What does it cost to assume a VA or FHA loan?

On a VA assumption, the VA charges a funding fee of 0.5% of the loan balance unless the buyer is exempt, and it must be paid at closing. On an FHA assumption, HUD allows the lender to charge a processing fee of up to $1,800. Credit reports and other closing costs are extra.

How do buyers cover the down payment gap on an assumable loan?

The gap is the difference between the sale price and the seller's remaining loan balance. Buyers usually cover it with cash, or with a second loan if the servicer allows one. Condos and recently purchased homes often have smaller gaps.

Are there assumable loans on Oʻahu?

Yes. VA loans are the most common, especially in neighborhoods near Joint Base Pearl Harbor–Hickam, Schofield Barracks and Marine Corps Base Hawaii in Kāneʻohe Bay. FHA loans can be assumed too. USDA loans are less common because they're limited to eligible rural areas.

This post is general information, not financial advice. Loan rules and fees change, so confirm the details with your lender.

Assumable loans can save you hundreds a month, but they take some planning. You'll need to cover the down payment gap, get lender approval, and find homes that have one. If you're shopping on Oʻahu and want help finding homes with a VA, FHA or USDA loan you could take over, reach out to me here. We can go over your options and run the numbers together.