How to Assume a Mortgage: Step by Step
Assuming a mortgage means taking over a seller's existing loan, including their interest rate, their remaining balance, and their original loan terms. If you find a home with an FHA or VA loan locked in at 2.75% to 2.99%, you can legally step into that loan and keep that rate for the life of the loan. That's how to assume a mortgage, and it's a real, lender-approved process that exists right now.
You Didn't Miss Your Window
A lot of buyers run the numbers at today's rates and walk away thinking the math doesn't work. That feeling is accurate at 6.50%. It's a different story at 2.99%.
You can change almost everything about a house. You can renovate the kitchen, paint the walls, add a bathroom. The one thing you can't change after closing is the rate you locked in. So finding a home that already has the right rate baked into it is worth going after, right?
That's exactly what an assumable mortgage is. The loan was written to be transferred. The lender is involved the whole way. You're not doing anything unusual. You're just buying a home where the financing happens to be from 2020 or 2021 instead of today.
On a $500,000 home, that difference is roughly $1,000 per month. About $12,000 per year. Over the life of the loan, you're looking at $390,000 in total interest savings compared to signing up for today's rate on the same house.
That's not a rounding error. That's a retirement account getting maxed out every year, just from the rate you chose.
The 8-Step Process, Explained
Ryan Thomson at The Assumable Guy has walked buyers through this process dozens of times. Here's how it actually works.
Step 1: Find an assumable FHA or VA property with a rate worth assuming. Not every home qualifies. Only FHA and VA loans are written to be assumable. Ryan's team maintains a running list of every assumable property in Colorado, including a sub-list of VA sellers who will leave their entitlement with the property. Browse current listings here.
Step 2: Get pre-qualified. This is a soft credit pull, so it doesn't touch your score. Ryan looks at your income, your assets, and how much of the equity gap you can cover.
Step 3: Structure the equity gap. The equity gap is the difference between the home's current value and the loan balance you're taking over. On a $500,000 home with a $400,000 remaining balance, that gap is $100,000. That sounds like a lot of cash, but Ryan works with a lender who will finance the remainder if you put 5% down. You don't have to show up with $100,000 in your bank account.
Step 4: Make a full-price offer. These deals are competitive. The seller is handing you their rate, going through a longer closing process, and trusting you with their loan. Don't try to negotiate them down. Come in clean.
Step 5: Bring in an assumption processor. Banks have a financial incentive to drag their feet. They'd rather see a 2.75% loan paid off so they can re-lend that money at 6.50%. A good processor knows how to move things along and remind the servicer what the government requires them to do.
Step 6: Submit your paperwork to the servicer. They will ask for documents. Sometimes twice. Stay responsive, keep Ryan in the loop, and don't let communication go quiet for more than a few days.
Step 7: Get your approval from the servicer. Once they sign off, you're close. The full timeline from offer to close typically runs 45 to 90 days. Some servicers can close in 30.
Step 8: Close. You step into the loan at 2.99% while buyers at the house next door are signing up for 6.50%.
What the Numbers Actually Look Like
Here's the side-by-side on a $500,000 home:
| | Market Rate | Assumed Rate | |---|---|---| | Interest Rate | 6.50% | 2.99% | | Monthly Payment | ~$2,900/mo | ~$1,900/mo | | Monthly Difference | | ~$1,000/mo | | Annual Difference | | ~$12,000/yr | | 30-Year Difference | | ~$390,000 |
The assumed rate in this example comes from a loan originated in 2020 or 2021, when rates sat between 2.75% and 2.99%. Those rates are gone from the new-loan market. But they exist inside existing FHA and VA loans sitting on homes right now.
VA Loans: One Extra Detail to Know
If the home has a VA loan, there's an additional layer worth understanding. VA sellers can choose to leave their entitlement with the property, which makes assumption smoother for the buyer. Ryan maintains a specific list of these properties in Colorado for exactly this reason.
If you're a veteran yourself, the VA loans page walks through how entitlement works in an assumption and what your options are depending on whether the seller is also a veteran.
Either way, FHA or VA, the process is the same eight steps. The rate is the same kind of opportunity. The math works in both directions.
Frequently Asked Questions
Is assuming a mortgage actually legal?
Yes. FHA and VA loans are written specifically to be assumable. The lender and servicer are involved the entire time. You go through income verification, credit review, and formal approval before anything transfers. It's a standard loan transaction, just with an existing loan instead of a new one.
How long does a mortgage assumption take to close?
The typical timeline is 45 to 90 days from offer to close. Some servicers move faster and can close in 30 days. The variable is usually how responsive the servicer is, which is one reason Ryan brings in an assumption processor on every deal.
What is the equity gap and how do buyers cover it?
The equity gap is the difference between the home's current market value and the remaining loan balance you're taking over. If the home is worth $500,000 and the balance is $400,000, your equity gap is $100,000. Ryan works with a lender who will finance that gap if you bring 5% down, so you're not required to show up with the full difference in cash.
Why do banks make mortgage assumptions difficult?
Banks would rather see a low-rate loan paid off so they can relend that money at current rates. A 2.75% loan on their books is less profitable than a new 6.50% loan. An experienced assumption processor knows how to keep things moving and, when needed, remind the servicer of their legal obligations under the loan agreement.
Where can I find assumable homes in Colorado?
Ryan Thomson at The Assumable Guy, operating through Keller Williams Advantage Realty in Colorado Springs, CO, maintains a current list of every assumable FHA and VA property in Colorado, including a dedicated sub-list of VA sellers leaving their entitlement with the property. Browse assumable homes here.
Ready to See Your Numbers?
If a $1,000/month difference sounds worth a 45-to-90-day process, that's worth a conversation. Ryan Thomson at The Assumable Guy works with buyers who are serious about finding these rates before they disappear from the resale market.
Find Ryan at assumableguy.com or on Instagram as The Assumable Guy. Tell him your situation and he'll show you exactly what your payment looks like.
If you're a seller wondering what your assumable loan is worth to a buyer, start here.
Ryan Thomson, The Assumable Guy. Equal Housing Opportunity.