Mortgage Recasting: How It Works and When to Use It

A recast keeps the rate and the payoff date. Only the payment moves.

By Ken Byrne, NMLS #187129 · ALCOVA Mortgage LLC, NMLS #40508 · Updated September 2026

Recasting is the least understood of the three ways to change a mortgage payment, and in a region full of people who bought before they sold or who are paid in lumps, it is frequently the right one. Below is what it does to the loan, what it costs, which loans qualify, and the number almost every other guide leaves out. If you want it run on your own balance, the the Ken Byrne Team desk will do it the same day.

What a recast actually does to your loan

Three things about your mortgage can change: the interest rate, the remaining term, and the balance. A refinance replaces the note and can change all three. A recast changes exactly one of them.

You send the servicer a lump sum. The servicer applies it to principal, then runs the amortization again on the smaller balance across the number of months still left on the original note. Same rate. Same final payment date. Smaller payment. Your escrow for taxes and insurance is untouched, which is why the number on your statement will not fall by the full amount the principal and interest figures below show.

Fannie Mae's Servicing Guide is unusually direct about this. The servicer must complete a re-amortization when, in the guide's words, “the borrower requests that the mortgage loan be re-amortized to reduce the contractual monthly mortgage loan payment after a substantial principal curtailment.” It is processed on Form 181, the Agreement for Modification, Re-Amortization, or Extension.

The numbers, in full

Principal and interest calculated at 6.95 percent over the stated remaining term. The same four inputs drive every figure in this article.

The number most recast guides leave out

Every article about recasting tells you the payment goes down. Almost none of them tell you what the same money does if you skip the recast. Here is the same $100,000, three ways.

Balance $580,182 at 6.95 percent with 324 payments left, which is a $600,000 loan three years in. Principal and interest only. Total column is the remaining payments multiplied by the monthly figure.

Recasting saves $685 a month and costs $236,502 more over the life of the loan than putting the identical $100,000 in and leaving your payment where it was. That is not an argument against recasting. It is the trade being stated plainly: you are buying monthly cash flow, and the price is roughly eight years of extra payments.

Which side of that trade is right depends entirely on what the cash flow is for. Freeing $685 a month to cover a genuine gap in a household budget is worth it. Freeing $685 a month that then goes nowhere in particular is how people quietly pay a quarter of a million dollars for nothing. If shortening the loan is what you actually want, the same logic runs through our comparison of the 15 year against the 30 year.

Recasting buys monthly cash flow. Paying extra without recasting buys the house sooner.

A mortgage recast calculator you can run in your head

You do not need a tool for this. The payment reduction from a recast is strictly proportional to the lump sum, because the amortization formula is linear in the balance. That means one number does the whole job: how much the payment falls per $10,000 of curtailment, at your rate, over the months you have left.

Calculated at 6.95 percent, the Freddie Mac Primary Mortgage Market Survey average for the week ending September 17, 2026. The figure is the standard amortization factor applied to $10,000, so it scales exactly: ten times the lump sum is ten times the drop.

Take the row that matches where you are on the loan, divide your lump sum by 10,000, and multiply. On the worked example above, $100,000 divided by 10,000 is ten, and ten times $68.46 is $684.60. The precise figure is $684.56. That is close enough to decide with.

All rows on the same $580,182 balance at 6.95 percent with 324 payments remaining. The last column is what happens if you make the same curtailment and decline the recast, keeping the $3,972 payment. Principal and interest only.

Read the last two columns together. A $200,000 curtailment with a recast leaves you paying for another 324 months at $2,603. The same $200,000 without a recast has the loan gone in 140 months. Same money in, two completely different outcomes, and the only thing separating them is a form and a few hundred dollars in fees.

What a recast does not change

Worth stating explicitly, because the statement you receive afterwards will not fall by the amount you were quoted, and people assume something went wrong.

The mortgage insurance line catches people out. Paying the balance down below 80 percent of the original value can make you eligible to have private mortgage insurance removed, but that is a separate request with its own rules, and the recast does not trigger it. If your curtailment is large enough to cross that threshold, make both requests at the same time and confirm both in writing.

These three get compared as if they were alternatives to each other. They solve different problems.

Recast fee range: JVM Lending, which reports that recasting fees typically run $200 to $500 depending on the servicer.

The refinance question turns on one thing: has your rate moved. With the 30 year fixed averaging 6.95 percent for the week ending September 17, 2026, anyone who closed in 2020 or 2021 is not refinancing to a lower rate, and a recast is the only lever that touches the payment without giving up the old rate. We walk through when a refinance does pencil out in our guide to refinancing in 2026.

Note the middle column carefully. Refinancing the same $480,182 balance at today’s 6.95 percent produces a payment of $3,179, which is actually lower than the $3,287 the recast produces. That is not a better deal. It is a 30 year clock replacing a 27 year clock, plus closing costs, plus a new credit pull. The payment is lower because the term is longer. The place to check that is page one of the Loan Estimate, which states the term and the total you will have paid, side by side with the monthly figure.

Which loans can be recast

This is the question that ends the conversation for a lot of people, so it is worth establishing early.

USAA’s published servicing guidance states that government-backed loans are not eligible for recast, including loans with investors like VA, FHA, GNMA and USDA, and that interest-only, Option ARMs and commercial loans are also not eligible. Veterans United states the same for VA loans specifically. Jumbo and portfolio loans are held by the lender, so the lender decides.

If you are on an FHA or VA loan and sitting on cash, the lump sum still does its work. It shortens the loan and cuts the interest you pay, which is the third column in the table above. You just will not get a lower monthly payment out of it.

This is one of the quieter arguments for taking a conventional loan in the first place when you have the down payment to choose. Recasting is a feature of the conventional product, not a favor a servicer grants, and it is worth something to anyone whose income arrives in lumps. The trade-offs are set out on our conventional loans page.

What it costs, and what your servicer gets to decide

Fannie Mae requires the re-amortization on request after a substantial curtailment, but it does not define substantial and it sets no minimum. Your servicer fills both gaps. That means there are exactly two numbers to ask for before you send any money:

Minimum and fee ranges: JVM Lending. Timing and transfer waiting period: USAA’s published recast help page, which states the process can take up to 90 days and that recently transferred accounts may need to wait 90 days.

Ask in that order and get the answers in writing before the money moves. A curtailment that lands below the servicer’s minimum does not bounce back to you. It sits on the loan as principal, which is fine, but it will not produce the lower payment you were expecting.

When a recast is clearly the right call

You bought before you sold

The most common good reason in this region. You closed on the new house with a bridge arrangement or a larger loan than you wanted, the old house sells two months later, and you are holding a six figure check against a mortgage you never intended to carry at that size. Recasting turns that check into a permanently lower payment without touching the rate you just locked.

Your income is lumpy and the payment is not

Commission, bonus and equity compensation are ordinary here. A recast converts a once a year windfall into twelve smaller monthly obligations, which is a real improvement if the payment has been tight in the months between.

You have a rate you will never see again

Anyone holding a mortgage from 2020 or 2021 should treat that note as an asset. A refinance destroys it. A recast leaves it exactly where it is and still lowers the payment.

You are about to qualify for something else

A lower housing payment lowers your debt-to-income ratio, which can matter if you are applying for anything in the next year. This is a legitimate strategic use, and it is worth understanding how the ratio is calculated first. Our guide to how debt-to-income affects approval sets out how lenders count the payment.

Why this comes up so often around Washington

Recasting is a niche tool nationally and a routine one here, for three reasons that are specific to this market.

Balances are large enough for the arithmetic to matter

A $68 per $10,000 reduction is not interesting on a $180,000 loan. On the balances that are normal across Fairfax, Arlington, Loudoun and the District, a curtailment that a seller walks away from an ordinary sale with is enough to move the payment by several hundred dollars a month, permanently. We see the same arithmetic run in Bethesda and Rockville, and as lenders on both sides of the river, it is the same conversation in Bethesda as it is in Vienna.

Buying before selling is the default, not the exception

Inventory is tight and contingent offers lose. Plenty of households here close on the new house first and carry two mortgages for six to ten weeks. When the old house settles, the proceeds arrive as a single large check against a loan that was sized for a worst case. That is the textbook recast, and the reason to plan it before you close rather than after: the loan you take on the new house has to be one that can be recast at all.

Income here arrives in lumps

Federal bonuses, contractor performance payments, equity vesting and partner distributions all land once or twice a year against a mortgage payment that lands twelve times. A recast converts the lump into a permanent reduction rather than a month of breathing room. Our Virginia home loans page covers the products that handle variable income well at origination, which is the better place to solve it.

When it is the wrong move

Four situations where the lump sum should go somewhere else entirely.

There is also a quieter version of the fourth case. A recast is permanent and passive: once the payment drops it stays dropped, and the discipline that was building equity disappears with it. Paying extra without recasting requires you to keep choosing it, which is the weakness people usually cite and, for exactly the same reason, the strength.

How to actually do it

The mechanics are simpler than the decision. In order:

That last step is not a formality. The rate and the maturity date are the two things a recast is not supposed to touch, and confirming both on paper takes a minute. If either has moved, something other than a recast happened. Our explainer on how escrow accounts work covers why the total statement figure can still move even when the loan itself has not.

Frequently asked questions

What is a mortgage recast?

A mortgage recast is a re-amortization. You make a large one-time payment toward principal and the servicer recalculates your monthly payment across the months still left on the original note. The interest rate and the maturity date do not change, only the payment.

How much does a mortgage recast cost?

A servicer fee, commonly $200 to $500 according to JVM Lending, with no closing costs, no appraisal and no credit check. That is the main reason people choose it over a refinance.

How much do I have to pay down to recast?

There is no rule. Fannie Mae's Servicing Guide requires the re-amortization after a substantial principal curtailment but never defines a dollar amount, so each servicer sets its own minimum. Most fall in the $5,000 to $10,000 range or use a percentage of the balance. Ask for the figure before you send anything.

Can I recast an FHA or VA loan?

No. Government-backed loans are not eligible, which covers FHA, VA, USDA and GNMA, along with interest-only loans and Option ARMs. Conventional loans backed by Fannie Mae and Freddie Mac are eligible, and jumbo and portfolio loans are at the lender's discretion.

Is recasting better than refinancing?

They answer different questions. Recasting keeps your rate and costs a few hundred dollars. Refinancing changes your rate and costs full closing costs. If you hold a rate from 2020 or 2021, refinancing at the 6.95 percent averaging in September 2026 would be a large step backwards, and a recast is the only way to lower the payment without losing that note.

Does recasting save me money?

Not compared with making the same lump sum payment and keeping your old payment. On the example in this article, recasting costs $236,502 more in total outlay across the remaining term. What it buys is $685 a month of cash flow. Whether that is worth it depends on what the cash flow is for.

Does a recast hurt my credit?

No. There is no credit inquiry, and because Fannie Mae's guide states a re-amortization is not treated as a modification, it does not carry the implications a loan modification does.

How long does a mortgage recast take?

It varies by servicer. USAA's published guidance says the process can take up to 90 days, and that a recently transferred account may need to wait 90 days before it can be recast at all.

How much will my payment drop if I recast?

About $68 for every $10,000 you pay down, on a loan at 6.95 percent with 324 months left. The figure rises as the remaining term shortens: roughly $77 per $10,000 with 240 months left and $116 with 120 months left. Multiply your lump sum by the right figure and you have your answer to within a dollar.

Can I recast more than once?

Most servicers allow it, subject to the same minimum curtailment and the same fee each time. There is no VA or agency rule capping the number of re-amortizations. Ask your servicer, because this is one of the areas where policies differ most.

Does recasting remove PMI?

No, not by itself. Paying the balance below 80 percent of the original value can make you eligible to request removal of private mortgage insurance, but that is a separate request with its own requirements. If your curtailment crosses the threshold, make both requests together.

Can I recast a mortgage I just took out?

Usually yes on a conventional loan, though some servicers require a set number of payments first and a recently transferred account may face a 90 day wait. If you expect a lump sum within the first year, raise it at application rather than after closing.

What is the difference between a recast and a principal curtailment?

A curtailment is the payment itself. A recast is what you ask the servicer to do afterwards. Send a curtailment with no recast request and the money shortens the loan while the payment stays the same. Both are useful. They produce opposite outcomes.