02 What you need to know
How an assumable mortgage works
An assumable mortgage is a loan the buyer takes over from the seller, keeping the existing rate, remaining balance and remaining term.
Which loans are assumable
- FHA, VA and USDA loans are generally assumable, with approval from the servicer (the company that manages the loan).
- Most conventional loans have a due-on-sale clause, meaning the full balance comes due if the home is sold. They generally can’t be assumed, with rare exceptions such as some adjustable-rate loans.
What approval involves
You still have to qualify. The servicer reviews your credit, income and DTI (debt-to-income ratio, your monthly debts divided by your gross monthly income), much like a new loan.
The seller generally wants a release of liability, so they’re no longer responsible for the loan once you take it over. Without it, they could remain on the hook if you stop paying.
VA assumptions
- A non-veteran can assume a VA loan, but the seller’s VA entitlement (the benefit that backs the loan) generally stays tied to it until it’s paid off.
- A veteran buyer can substitute their own entitlement, which frees up the seller’s.
- VA lists a 0.5% funding fee on assumptions, unless the buyer is exempt.
FHA assumptions
HUD requires a creditworthiness review and limits the processing fee a servicer can charge. Any FHA mortgage insurance on the loan generally stays with it.
Assumptions often take longer than a standard purchase, so contract timelines need to allow for that.
03 Real-world example
Covering the equity gap on an assumable loan
Say you buy a home for $900,000. The seller has a $600,000 assumable balance with 25 years left. That leaves a $300,000 equity gap, before closing costs, that you have to cover.
Here’s one way it could look if you bring $120,000 and the servicer approves a second loan for the rest, compared with a new loan using the same $120,000 down.
| Option | Loan | Hypothetical rate / term | Monthly P&I |
|---|---|---|---|
| A: Assumed first loan | $600,000 | 3.25% / 25 yrs left | $2,923.90 |
| A: Second loan for part of the gap | $180,000 | 8.5% / 30 yrs | $1,384.04 |
| A: Combined payment | $780,000 | $4,307.94 | |
| B: New 30-year loan | $780,000 | 7% / 30 yrs | $5,189.36 |
| Difference (B minus A) | $881.42 |
If you covered the full $300,000 gap in cash, your P&I would be just the assumed $2,923.90.
Assumptions: all rates are hypothetical and for illustration only, not rates available today. P&I only; excludes taxes, insurance, mortgage insurance, the VA funding fee if applicable and closing costs. Whether a second loan is allowed, and on what terms, depends on the servicer and program.
04 What most people overlook
What buyers overlook about assumable loans
- The gap is the real hurdle. In LA, years of price growth can make the difference between price and balance large.
- Second loans need approval. Not every servicer or program allows one, and the payment on it can erase much of the savings.
- Timing. Servicers handle assumptions on their own schedule, so build extra time into the contract and keep a backup plan.
- Seller’s entitlement. A VA seller who lets a non-veteran assume may have less entitlement for their next VA loan.
- A shorter remaining term means a faster payoff, but also a higher payment than the same balance stretched over 30 years.
An assumable loan can lower your payment, but only if you can bridge the gap between price and balance on terms that still make sense.
05 How I’d approach it
How I’d evaluate an assumable mortgage
A low assumable rate is worth chasing, but I run it side by side with a new loan before anyone counts on it.
First I confirm the loan type with the seller’s statement. If it’s FHA or VA, I find out who the servicer is and what its assumption process looks like.
- Measure the equity gap and how much of it you can cover with cash.
- Check whether the servicer allows a second loan, and price one. The concept is similar to the second-lien options on my HELOC and home equity page.
- Compare the blended payment with a new loan, including fees and timing.
- Line up a standard financing backup in case the assumption stalls.