Mortgage Recast Explained: How It Lowers Your Payment
Put a lump sum toward principal, keep your rate, and shrink your monthly payment without refinancing.
If you have come into a chunk of cash — a bonus, an inheritance, proceeds from selling a previous home — you may be looking for the smartest way to use it against your mortgage. A mortgage recast is one of the most overlooked options. It can lower your monthly payment for a small flat fee, without the paperwork, credit pull, or closing costs of a refinance. The catch is that not everyone qualifies and not every situation calls for it. Here is how it works in plain English.
What a mortgage recast actually is
A recast (sometimes called re-amortization) is when you make a large one-time payment toward your loan's principal balance, and your lender then recalculates your monthly payment based on the new, lower balance. The key features that make a recast distinct:
- Your interest rate stays the same. You keep whatever rate you originally locked in.
- Your payoff date stays the same. The loan is re-amortized over the remaining term, not a fresh 30 years.
- Only the monthly payment changes. Because the balance is smaller but the finish line and rate are unchanged, the required payment drops.
In other words, you are not getting a new loan. You are keeping the exact same loan and asking the lender to re-spread a smaller balance across the months you have left.
How re-amortization works
Every fixed-rate mortgage payment is calculated from three inputs: the principal balance, the interest rate, and the number of payments remaining. A recast changes only the first input. The lender takes your new lower balance, applies your existing rate, and divides the repayment across the same number of months still on the clock. The result is a new, smaller required payment that still pays the loan off on the original schedule.
Because the term does not reset, you also avoid the trap that catches many people who simply refinance into a fresh 30-year loan: stretching the payoff back out and paying more total interest even at a lower rate.
A worked example
Example: Suppose you have a 30-year mortgage and you are 5 years in, leaving 25 years remaining. Your balance is around $300,000 and your rate is, say, 6%. Your required principal-and-interest payment is roughly $1,920 a month. You receive $60,000 and apply it to principal in a recast.
Your new balance is about $240,000. The lender re-amortizes that $240,000 over the same 25 remaining years at the same 6% rate. The new required payment falls to roughly $1,546 — about $374 less each month. Your rate did not change, and your loan still pays off on the original date. (These figures are illustrative; your real numbers depend on your exact balance, rate, and remaining term.) You can model your own scenario with our calculator.
Recast fees vs. refinance closing costs
This is where recasting shines. A refinance is a brand-new loan, so it typically comes with closing costs — appraisal, title, origination, and other fees that can run into the thousands of dollars. A recast usually charges only a small flat administrative fee, often somewhere in the low hundreds of dollars, with no appraisal and no credit check.
- Recast: small flat fee, no new underwriting, same rate, same payoff date, lower payment.
- Refinance: full closing costs, new underwriting and credit pull, potentially a new rate and a new term.
The practical takeaway: if rates have not dropped meaningfully since you got your loan, a refinance may cost you money without lowering your rate. A recast lets you reduce your payment cheaply while keeping the rate you already have.
When a recast makes sense
A recast tends to be the right tool when several of these are true:
- You have a lump sum and want a lower required monthly payment for cash-flow breathing room.
- Your current rate is competitive, so refinancing would not lower it.
- You want to avoid closing costs and the hassle of re-qualifying.
- You are happy with your existing loan terms and payoff date.
- You bought a new home before selling the old one and now have sale proceeds to apply.
When a recast is not the answer
Recasting is not always the best move. Consider other paths if:
- Rates have fallen a lot. A refinance might cut your rate and your payment, saving more over time despite closing costs.
- You want to be debt-free sooner. Recasting lowers the payment but keeps the same payoff date. If you instead make a large principal payment and keep paying the original amount, you will pay the loan off early and save more interest — you just will not get a lower required payment.
- Your loan type is not eligible. Many government-backed loans (such as FHA and VA loans) generally cannot be recast. Most conventional loans can, but jumbo and other products vary by servicer.
- You would drain your emergency fund. Money put into a recast is locked into home equity and is not easy to pull back out.
How to request a recast
The process is handled by your loan servicer, not a new lender. Generally you will:
- Call your servicer and confirm your loan is eligible and ask their minimum lump-sum requirement.
- Make the lump-sum principal payment (some servicers require it before the recast, others as part of the request).
- Sign a short re-amortization agreement and pay the flat fee.
- Receive your new payment amount, usually effective the following month or two.
For general consumer guidance on mortgages and dealing with servicers, the Consumer Financial Protection Bureau (consumerfinance.gov) is a solid neutral resource.
Frequently Asked Questions
Does a recast lower my interest rate?
No. A recast keeps your existing rate. Only the monthly payment changes, because it is recalculated on a smaller balance over the same remaining term. To change your rate, you would need to refinance.
Will recasting pay off my loan sooner?
No. The payoff date stays the same. If your goal is to finish early, make the lump-sum principal payment but keep paying your original (higher) monthly amount instead of recasting.
How much does a recast cost?
Most servicers charge a small flat administrative fee, commonly in the low hundreds of dollars. There is typically no appraisal, no credit check, and no closing costs, which is the main advantage over refinancing.
Can any mortgage be recast?
Not all. Many conventional loans qualify, but government-backed loans such as FHA and VA generally do not, and rules for jumbo loans vary. Always confirm eligibility and the minimum lump-sum amount with your servicer first.
This article is for educational purposes only and is not financial, tax, or legal advice. MoneyPencil is not a lender, tax preparer, insurer, or financial advisor. Verify all figures and decisions with a licensed professional before acting.