How to Recast a Mortgage to Fix a Payment That Runs Too High

The Quick Read: A recast lowers your monthly principal and interest by re-amortizing your loan after you make a large lump-sum payment. Your rate and payoff date stay the same. Only the payment changes. It works only if your servicer offers it and your loan is current, and it leaves taxes, insurance, and mortgage insurance untouched.

What Is a Recast, Exactly?

A recast is a recalculation of your payment after a big principal payment. You send a lump sum. The balance drops. The servicer then re-spreads the smaller balance over the remaining months at your current rate.

Fannie Mae does not use the word “recast” in its servicing rules. It calls the process a re-amortization. Its recast loan overview says the only change to the original note terms is the lower monthly payment. That is a useful phrase to remember, because it answers most of the questions people have about what a recast changes.

Amortization is just the schedule that splits each payment between interest and principal. A recast rebuilds that schedule from a lower starting balance. Same rate. Same end date. Smaller required payment.

One more distinction. People also use “recast” for the payment reset when an adjustable-rate or interest-only period ends. That is a different event. It happens on a schedule written into your note. The recast here is one you request, and it follows money you chose to put in.

Start by Diagnosing the High Payment

Before you gather cash, look at what is actually making the payment high. A recast only touches one piece of it.

Pull out your latest statement and see how the total breaks down. If taxes and insurance drove the increase, a recast will not fix it. If principal and interest is the heavy part, it might.

Mortgage insurance deserves a closer look. Across the wholesale programs I place files with, conventional loans above 80% loan-to-value (LTV) carry it. LTV is the loan balance divided by the home’s value. You can request cancellation when you reach 80% of the original value, with a good payment history, no second liens, and no drop in value. The servicer must end it automatically at 78%. So a large principal payment can matter twice. It can lower the recast payment and move you toward dropping mortgage insurance. Ask your servicer how it measures those thresholds. A recast by itself does not automatically cancel the insurance.

How the Recast Is Handled, Step by Step

Here is how the process runs in practice.

1. Find out who services the loan and whether it is conventional. The servicer, not the original lender, handles the request.

2. Ask for a “re-amortization after a principal curtailment.” A curtailment is a principal-only payment beyond what is due. Servicers often say “recast,” but the agency guides use the longer wording. Using it on the phone can save a round of confusion.

3. Check whether the loan is current. For a delinquent Fannie Mae loan, the Servicing Guide says additional principal payments go first to curing the delinquency.

4. Get the terms in writing before you send money. Ask about the minimum lump sum, any processing fee, and how the new payment will be figured. Both vary by servicer, and a modest fee is typical.

5. Send the lump sum and label it principal-only. Fannie Mae’s rule covers a payment the borrower identifies as a curtailment. An unlabeled payment can be treated as an ordinary payment.

6. The servicer re-amortizes and signs the paperwork. Per Fannie Mae’s recast overview, the servicer completes Form 181, the Agreement for Modification, Re-Amortization, or Extension of a Mortgage. You get a copy.

Fannie Mae’s job aid on curtailments says a curtailment sent with your scheduled payment is applied after that payment. Sent separately, it is applied first. Ask your servicer how it handles this so the interest math matches your expectations.

The sequencing risk is simple. Request first, pay second. If you wire the money and the servicer then declines, the cash is sitting against your balance and your payment has not moved. You may not be stuck, because the balance still dropped. But it is not the outcome you were after.

Does a Recast Need a New Application or Appraisal?

Generally no. A recast is not a new loan, so there is no new application and no new note. The borrower was fully qualified on the original note amount when the loan was made.

There is a limit to what the agency provisions say. They do not describe a new appraisal or credit review for a recast, and they also do not say flatly that none is allowed. Servicers can set their own procedures, so ask what yours requires.

Compare that with a refinance, which is a new loan. You apply, the file is underwritten, and the closing costs come with it. That trade is the heart of the recast-versus-refinance decision.

Who Can Recast, and Where the Rule Breaks

The general rule: a conventional loan, current on payments, serviced by a company that offers recasts, with a lump sum large enough to count. Several edge cases bend that rule.

The servicer has the final say. Fannie Mae’s Servicing Guide says the servicer “may” agree to reduce principal and interest after a substantial curtailment. “May” means discretion. The guide sets no dollar threshold, and “substantial” is not defined, so minimums are servicer policy. Some servicers set a higher floor than others, and some do not offer recasts at all.

Government loans. FHA, VA, and USDA loans are generally not eligible for a recast. Treat it as “generally not available” and ask your servicer.

Adjustable-rate mortgages. Servicers also tend to restrict recasts near a scheduled rate change. Ask where yours draws the line.

Delinquent loans. The money goes first to curing the delinquency. A recast comes after, if at all.

Jumbo and portfolio loans. Agency guides govern agency loans. Loans held by other investors follow those investors’ policies. Some can be recast, and servicer policy decides.

Original loan limits. Fannie Mae’s overview says the original note amount must meet the loan limits in effect when the loan was acquired. That is a seller-side delivery rule, not a hurdle you clear as the borrower.

Flex Modification is something else. It is a distress workout. Fannie Mae’s Servicing Guide describes it as a sequence of steps aimed at a 20% reduction in principal and interest. It is for borrowers in hardship, and the agencies report a recast as a non-modification. Do not confuse the two.

What Does the Decision Look Like in Practice?

The question is not “can I recast?” It is “is a recast the best use of this cash?” Walk through it in order.

Do you have a lump sum you can truly spare? Test it against your emergency fund. Once the money goes into the loan, it stays in the home. You cannot pull it back without a sale, a refinance, or an equity loan.

Is your rate worth keeping? A recast keeps your existing rate. If your rate is already one you are glad to hold, a recast lowers the payment without giving that up. That is its main edge over a refinance.

Is the rate or term the actual problem? If yes, a recast cannot help. A refinance can change the rate, term, or loan type, but it comes with a new application and closing costs. A rate-and-term refinance is a limited cash-out loan. It pays off your existing first mortgage and closing costs, with only incidental cash back, and mortgage insurance applies above 80% LTV. Whether it makes sense depends on your numbers. Leverage limits and every other term are subject to lender guidelines and a complete review of property type, occupancy, and credit.

What is your goal: lower payment or lower total interest? Any lump sum saves interest. But if you take part of the benefit as a smaller payment, you pay more total interest than if you had kept the old payment and paid the loan off sooner. The payoff date stays unchanged after a recast, per Fannie Mae. So a recast is a cash-flow tool, not a payoff tool.

Picture a household that sold a prior home and has proceeds left over after buying the new one. The new payment feels tight. They keep a healthy cash cushion and love their current rate. A recast fits well. Now picture a household whose payment is high because the rate is high and the loan is large. The lump sum they have is small. A recast would barely move the number. Refinancing is the better conversation.

Sizing it is a reverse problem. The bigger the lump sum relative to your balance, the bigger the payment drop. There is no shortcut that is accurate for every loan. Ask the servicer for the new amortization schedule at a given curtailment before you commit, then compare it against your target payment.

If you are shopping for the loan itself and want to understand how these programs work from the start, Lendmire’s conventional loan programs page lays out the basics. At the front end, the envelope is a 95% standard purchase (97% for first-time buyers on a one-unit fixed-rate home), mortgage insurance above 80% LTV, a 620 wholesale floor, and a 50% automated ratio ceiling. All of that is subject to lender guidelines and a full file review.

Questions to Ask Your Servicer

Keep this short list at hand when you call.

• Do you offer re-amortization after a principal curtailment on my loan?
• Is there a minimum lump sum?
• What fee applies, and when is it due?
• Does my loan have to be current, and how do you check?
• How will you apply my payment, and in what order?
• Will you send the new amortization schedule and the signed agreement?
• Is there any limit on how often I can do this?

If a Recast Is Not an Option

You might have no lump sum, a loan type that is not eligible, or a servicer that does not offer it. You still have paths.

Refinancing changes the rate, term, or loan type, at the cost of a new loan and closing costs. Paying extra principal on your own lowers total interest and shortens the loan, though not your required payment. If the high payment is in the escrow items, a review of your taxes and insurance is the right focus. If you are struggling to pay at all, talk to your servicer early about hardship options.

After the Recast: A Short Checklist

• Compare the new payment in writing against what the servicer quoted.
• Check that the rate and maturity date are unchanged.
• Update autopay to the new amount.
• Confirm your escrow items have not shifted by mistake.
• Keep a copy of the signed agreement.

Key Terms Defined

Recast (re-amortization): Recalculating your monthly principal and interest after a large principal payment, using the same rate and remaining term.

Curtailment: A principal-only payment beyond what is due, which lowers your balance.

Amortization: The schedule that divides each payment between interest and principal until the loan is paid off.

Servicer: The company that collects your payments and manages your loan, which may differ from the lender who made it.

Loan-to-value (LTV): Your loan balance divided by the home’s value.

If your payment runs too high and you want to see whether refinancing into a conventional loan fits your file, Lendmire can help you compare the options and what each one asks of the file.

For your own numbers, request a scenario review with Lendmire.

About Lendmire

Lendmire, NMLS# 2371349, is a mortgage brokerage with consumer lending licenses in 16 states. FHA, VA, conventional and jumbo purchase and refinance loans are arranged through wholesale lending partners, and each application is reviewed individually by the lender. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Fannie Mae Loan Delivery Job Aid: Recast Loan Overview

2. Fannie Mae Servicing Guide C-1.2-01: Processing Additional Principal Payments

3. Fannie Mae Job Aid: Processing a Principal Curtailment on a Recast Loan

4. Fannie Mae Servicing Guide F-1-09

5. Fannie Mae Servicing Guide F-1-27: Flex Modification