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Recasting After Selling Your Old Home (Bridge Buyers)

Published October 14, 2026 · By the PrepayMath team

Not financial advice. This guide is for general education only. Examples use simplified assumptions (fixed rates, principal and interest only) and are not recommendations or rate quotes. Confirm details with your loan servicer, lender, or a licensed financial or tax professional before acting.

Many families buy their next home before the old one sells. They take out a mortgage sized for a buyer who doesn't yet have their equity, then wait for the sale to close. When the proceeds arrive, the question is what to do with them. A mortgage recast is designed for this situation: you put the sale proceeds toward the new loan and your servicer lowers the payment to match the smaller balance, without a new loan or a new rate.

This guide walks through the numbers for a typical "bridge buyer," explains the steps, and covers the things to check before you send a large payment to your servicer.

Why recasting fits bridge buyers

When you buy before you sell, your new loan is bigger than it will eventually need to be. You may have used savings, a smaller down payment, or temporary financing to close. Once the old home sells, you have a large lump sum, and a payment that was sized for a much larger balance.

Refinancing would also reduce the payment, but it replaces your loan, so you'd pay closing costs and take whatever rate is available at the time. A recast keeps your existing rate and term and only recalculates the payment. Fannie Mae's servicing rules describe it as reducing the principal and interest payment based on a re-amortization of the current balance, using the current interest rate and remaining loan term. ^[source] Fannie Mae also says it will purchase a recast loan following a substantial principal curtailment from the borrower, provided the only change to the original note terms is the lower payment. ^[source] In other words, recasting is an established, routine process for conventional loans, not an unusual request.

Worked example

Say you buy a new home with a $480,000, 30-year loan at 7%. Your principal and interest payment is $3,193.45. Six months later your old home sells and you net $150,000 after paying off the old mortgage and selling costs.

After six payments, your new loan balance is about $477,605. You send the $150,000 to principal and ask for a recast, paying a $250 fee:

• New payment: $2,190.49
• Monthly savings: $1,002.96
• Interest saved over the remaining 29½ years, after the fee: about $204,797

That's a payment roughly a third lower, while you keep your 7% rate and original payoff date. You've made the new home affordable on your regular budget.

What if you keep the higher payment instead?

If you send the same $150,000 to principal but don't recast, and keep paying $3,193.45, the loan is paid off in about 13 years 1 month and you save about $479,561 in interest compared with doing nothing (about $479,311 after counting the $250 fee you'd have paid for a recast). That's far more than the recast saves. But you'd be committed to a payment you sized for the larger loan, which defeats the purpose for many bridge buyers.

A middle path: recast to lower the required payment, then voluntarily pay extra when you can. You keep the safety net of the lower minimum and still cut interest.

What if the proceeds are smaller?

With the same loan and only $80,000 in net proceeds, the recast payment would be $2,658.54, a drop of $534.91 a month, with about $109,109 in interest saved after the fee. Still meaningful, just less dramatic. Run your expected proceeds through the calculator before you list the old home, so you know what payment to plan for.

Step by step: how a bridge-buyer recast usually works

1. Before you buy, ask about recasting. Ask the lender whether the loan will be eligible, which servicer will handle it, and what the minimum lump sum and fee are. Policies vary by servicer.
2. Close on the new home. Make your regular payments while the old home is on the market.
3. Sell the old home. Your net proceeds are what's left after the old mortgage payoff and selling costs.
4. Send the lump sum as a principal payment. Follow your servicer's instructions exactly so the money is applied to principal.
5. Request the recast in writing. For Fannie Mae loans, the servicer guide describes the servicer completing a re-amortization agreement (Form 181) and providing it to the borrower when a borrower asks for a recast after a substantial principal curtailment. ^[source] Your servicer will tell you what it needs from you.
6. Confirm the new payment. Check your next statement for the new principal and interest amount and the lower balance.

Things to check first

Loan type and servicer policy

Recasting is most common on conventional loans. Government-backed loans (FHA, VA, USDA) generally can't be recast. If you know you'll want to recast, that may affect which loan you choose for the new home. Confirm with the lender before you commit.

Timing

Some servicers require a number of on-time payments before they'll recast, and processing can take a few weeks. Plan to keep making your full payment until the servicer confirms the new amount.

Escrow isn't part of the recast

Your escrow for property taxes and insurance is separate from principal and interest. ^[source] A recast lowers only the principal and interest portion, so your total monthly payment drops by the principal and interest difference, not more. Use the optional taxes, insurance and HOA fields in the calculator to see your full new payment.

Keep a cushion

It's tempting to send every dollar of the sale to the mortgage. Moving costs, repairs on the new home, and carrying both homes for a while add up. The CFPB notes that people without savings often rely on credit cards or loans when a financial shock hits. ^[source] Hold back enough cash for the unexpected, then recast with the rest. You can always prepay more later.

Recast or refinance after the sale?

If market rates have dropped well below your rate since you bought, a refinance could lower the payment even further. But it comes with closing costs and a new loan. If rates are similar or higher (Freddie Mac's survey put the average 30-year fixed rate at 7.40% for the week of October 8, 2026 ^[source]), a recast is usually the simpler, cheaper way to bring the payment down. Our recast vs refinance vs pay extra calculator compares all three with your numbers.

Common mistakes bridge buyers make

• Not asking about recasting until after closing. If the loan or servicer doesn't allow it, it's too late to choose a different loan.
• Sending the money without instructions. A large payment that isn't clearly marked as principal may be handled differently from what you intended.
• Assuming the payment drops immediately. Keep paying the full amount until the servicer confirms the recast.
• Using all of the proceeds. Keep a cash cushion for the move and the new home.

The bottom line

For buyers who purchase before they sell, a recast turns the sale proceeds into a permanently lower payment while keeping the loan's rate and payoff date. Confirm eligibility early, keep a cash cushion, and run your expected proceeds through the calculator so you know exactly what payment to expect.

Estimate your post-sale payment with the Mortgage Recast Calculator →

Not financial advice. This guide is for general education only. Examples use simplified assumptions (fixed rates, principal and interest only) and are not recommendations or rate quotes. Confirm details with your loan servicer, lender, or a licensed financial or tax professional before acting.