Mortgage Recast vs Refinance and Which One Saves More

You just received a lump sum, maybe from selling your old house, a bonus, or an inheritance, and you want your monthly mortgage payment to shrink. A mortgage recast can cut that payment for a few hundred dollars in fees, while a refinance might cost thousands, but the cheaper option is not always the better one.

I walk buyers through this decision often, usually right after a bridge purchase where they closed on the new home before the old one sold. Below is how a recast works, what it costs, a worked example with real numbers, and the situations where a refinance or a plain extra payment wins instead.

What a mortgage recast actually does

In a recast, also called re-amortization, you pay a large chunk toward your principal and the lender recalculates your monthly payment based on the new, lower balance. Your interest rate stays the same. Your remaining term stays the same. Only the payment changes.

That is the whole difference from a refinance. A refinance replaces your loan with a brand new one, with a new rate, a new term, a new appraisal, new underwriting, and new closing costs. A recast is an adjustment to the loan you already have.

Typical recast terms

• Fee: usually $150 to $500, paid once.
• Minimum lump sum: commonly $5,000 or $10,000, though some servicers ask for 10 percent of the balance.
• Timing: processing often takes 30 to 45 days, and you must be current on payments.
• Eligibility: most conventional loans qualify. FHA, VA and USDA loans generally cannot be recast at all.

That last point catches people. If you chose a government backed loan, the trade offs we covered in FHA vs conventional loans include this one: no recast option later, so a refinance or extra payments are your only tools.

Mortgage recast example with real numbers

Take a $400,000 conventional loan at 6.5 percent on a 30 year term. The principal and interest payment is about $2,528 per month. After 5 years, the balance is roughly $374,444.

Now you put $50,000 toward principal and request a recast over the remaining 25 years.

The recast drops the payment by about $338 per month and saves roughly $51,000 in interest over the life of the loan. Look at the third row, though. If you make the same $50,000 payment but keep paying $2,528, the loan is gone in about 18 years instead of 25, and you save around $152,000 in interest compared with doing nothing.

When a recast beats a refinance

A recast makes sense when three things are true at once.

1. Your current rate is already good. If you locked at 3 or 4 percent, a refinance at today's rates would raise your cost. A recast keeps that rate and still lowers the payment.
2. You have a real lump sum. Recasting $5,000 off a $300,000 loan barely moves the payment, roughly $30 a month. The math gets interesting above $25,000.
3. You need cash flow, not just savings. Retirees, people moving to a single income, or buyers carrying two homes briefly all care more about the monthly number than the lifetime total.

The classic case is the buyer who purchased before selling. They took a larger loan to close fast, sold the old place three months later, and now want the payment sized as if they had put that sale money down from the start. A recast does exactly that, for a few hundred dollars, without a new appraisal or credit pull.

When a refinance is the better move

A refinance wins when the rate itself is the problem. Using the same example, if rates had fallen to 5.75 percent, refinancing the $324,444 balance into a new 30 year loan would bring the payment to about $1,893. That is lower than the recast, but it costs 2 to 5 percent in closing costs, roughly $6,500 to $16,000, and it restarts the clock at 30 years.

A refinance also makes sense if you want to remove a co-borrower after a divorce, switch from an adjustable to a fixed rate, or pull equity out. A recast cannot do any of those. If you are weighing a rate change, our breakdown of when refinancing actually makes sense walks through the break even math, and if your loan is adjustable, read fixed rate or adjustable first.

Why a lower payment is not automatically the smart choice

The usual advice is that a recast is a "no brainer" because it is cheap. I push back on that. The cheap part is the fee. The expensive part is that a lower required payment quietly removes the pressure that pays your loan off early.

Go back to the table. Recasting saves about $51,000. Keeping the old payment after the same lump sum saves about $152,000. The difference, roughly $100,000, is the price of flexibility. Sometimes that price is worth paying. If your income is uncertain, a lower required payment is real insurance. But if your job is stable and you would never actually use the $338, skip the recast and just keep paying the old amount.

A middle path works well for many clients: recast to lower the required payment, then set up an automatic extra principal payment of the difference. You get most of the interest savings plus the right to drop back to the lower payment in a bad month.

One more check before you send $50,000 to a lender. Money paid into a mortgage is hard to get back out. You would need a home equity loan or a cash out refinance to access it. Keep at least 6 months of expenses in savings first.

How to request a recast step by step

1. Call your loan servicer, the company you send payments to, and ask if your loan is eligible for recast. Get the fee and minimum lump sum in writing.
2. Ask whether the lump sum must arrive before or with the recast request, and how they want it labeled so it applies to principal, not to future payments.
3. Send the funds by wire or certified check and keep the confirmation.
4. Sign the recast agreement, which is usually a one or two page form.
5. Check your next statement. Confirm the new payment and that the principal balance dropped by the full amount.

Frequently asked questions

Does a mortgage recast affect my credit score?

No. A recast does not involve a credit check or a new loan, so there is no hard inquiry and no new account on your report. Your loan keeps the same account history. Only the balance and payment amount change.

How many times can you recast a mortgage?

It depends on the servicer. Some allow only one recast over the life of the loan, while others permit one per year or have no stated limit. Ask before you plan a series of lump sum payments.

Is it better to recast or pay extra on my mortgage?

If your goal is the lowest total interest, paying extra while keeping the original payment usually wins. If your goal is a lower required monthly payment for cash flow or safety, a recast is better. Many people combine both approaches.