What Is the Equity Gap and How Do You Cover It?
The equity gap is the single biggest question for assumable mortgage buyers. It's the difference between what a seller owes on their loan and what you're paying for the home. That number is what you bring to closing, and covering it is the whole puzzle. Most buyers solve it with cash, a second mortgage, or a combination of options, and most deals close in the 5 to 15 percent down range.
You Found a Great Rate. Now You're Stuck on One Number.
You're looking at a home with a 2.75% rate locked in back in 2021. The home is priced at $400,000. The seller's loan balance is $350,000. You want the rate. You want the house. But nobody told you how to cover that $50,000 gap between what the seller owes and what you're paying.
That's the equity gap. It's not a flaw in the process. It's just the math of stepping into someone else's loan. And once you understand what it is, it stops being scary.
The good news: most buyers have at least one realistic way to cover it. You don't need to be sitting on a pile of cash. You need to know your options.
What the Equity Gap Actually Looks Like
The formula is simple. Take the purchase price, subtract the seller's remaining loan balance, and that's your gap.
If a home sells for $400,000 and the seller owes $350,000, your equity gap is $50,000. That's what you bring at closing. The seller's existing loan, with its original rate and terms, is what you take over.
Here's what Ryan Thomson at The Assumable Guy sees consistently in Colorado Springs and across his deals: gaps in the $15,000 to $50,000 range are common, and they're not that different from a conventional down payment. Except instead of a 6.5% rate, you're stepping into 2.75%. The gap isn't the obstacle. It's the price of admission for a rate that no longer exists on the open market, right?
Two real examples from Ryan's closed deals:
| Buyer | Purchase Price | Down Payment | Rate | |-------|---------------|--------------|------| | Jeremy | $380,000 | $15,000 | 2.65% | | Ben and Liz | $430,000 | $16,000 | 2.99% |
These weren't hypotheticals. They closed.
Six Ways to Cover the Equity Gap
You don't need all six of these. You need one that fits your situation.
1. Cash. The straightforward option. If you have the funds, you bring them to closing.
2. Second mortgage. A separate loan that covers some or all of the gap. Some lenders specialize in pairing these with assumable mortgages. Your combined payment is still often lower than a new conventional loan at today's rates.
3. HELOC on another property. If you already own real estate, a home equity line of credit can fund the gap without touching your savings.
4. Seller financing. Some sellers will carry a note for part of the gap. It's not guaranteed, but it's worth asking.
5. 401(k) loan. Borrowing from your own retirement account. Not a withdrawal, a loan. No penalty if done correctly, and you pay yourself back.
6. Gift funds. For FHA assumptions in particular, gift funds from a family member can cover the gap. FHA and VA loans are both assumable. VA loans have specific rules around who can assume them, so that's worth a separate conversation.
Most buyers, when they actually map out their situation, find at least one of these is available to them. The goal is to match the gap to the right funding source.
What About Low-Equity Sellers?
Sometimes the seller has very little equity left. The gap is tiny, maybe $10,000, sometimes even less. That does happen. But it's rare enough that you shouldn't build your strategy around it.
Go in expecting 5 to 15 percent of the purchase price as your gap. Plan for that range, identify which of the six funding options apply to you, and you'll be ready when the right home comes up.
If you're curious what assumable homes are available right now, browse active listings here.
Why the Rate Justifies the Work
A $400,000 home at 2.75% on a $350,000 loan balance carries a principal and interest payment around $1,429 per month. The same $350,000 loan at 6.5% is closer to $2,213 per month. That's a real difference every single month for the life of the loan.
You can repaint a house. You can remodel a kitchen. You can't renegotiate a rate after closing, which is why buyers who do the work to cover the equity gap are putting themselves in a position most buyers won't have access to.
The math supports the story. But the story is this: a rate someone locked in three years ago is now an asset, and you can buy it.
Frequently Asked Questions
What is an equity gap in an assumable mortgage?
The equity gap is the difference between the home's purchase price and the seller's remaining loan balance. If you're buying a $400,000 home and the seller owes $350,000, your equity gap is $50,000. You bring that amount at closing and take over the seller's existing loan with its original interest rate.
How do most buyers cover the equity gap?
The six most common ways are: cash, a second mortgage, a HELOC on another property, seller financing, a 401(k) loan, or gift funds. Most buyers have access to at least one of these. The right option depends on your specific financial picture.
Is the equity gap the same as a down payment?
Not exactly, but they're comparable in size for many deals. Ryan Thomson sees most assumable mortgage transactions close in the 5 to 15 percent range, which is similar to a conventional down payment. The difference is that instead of financing the full purchase at today's rates, you're stepping into an existing loan at a much lower rate.
What types of loans are assumable?
FHA and VA loans are assumable. If you're looking at a VA loan assumption specifically, there are additional rules around eligibility. The VA loans page at The Assumable Guy covers those in detail.
What if the seller has very little equity?
It happens. If the seller's loan balance is close to the purchase price, the gap is small or near zero. But this is the exception, not the rule. Plan for a 5 to 15 percent gap and treat a smaller gap as a bonus rather than the baseline expectation.
Talk to Ryan Thomson at The Assumable Guy
Ryan Thomson at The Assumable Guy works with buyers throughout Colorado Springs and beyond, helping them find assumable loans and map out exactly how to cover the equity gap for their situation. Whether you're trying to figure out your gap, identify funding options, or find the right home, he runs the numbers with you before you're ever under contract.
If you're a seller wondering whether your low-rate loan is an asset you can market, start here.
Head to assumableguy.com and Ryan will show you what your payment actually looks like.
Ryan Thomson, The Assumable Guy. Equal Housing Opportunity.