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What is a Mortgage Recast? A Step-by-Step Guide

By FastCalc Editorial June 30, 2026 6 min read

If you have accumulated a large sum of cash—whether through an inheritance, a work bonus, or the sale of another asset—you might be wondering how to use it to reduce your mortgage liability. While many homeowners choose to refinance or make simple extra principal payments, there is a third, often overlooked strategy: mortgage recasting.

How Mortgage Recasting Works

A mortgage recast (also known as a loan re-amortization) is a process in which your lender recalculates your monthly payments based on your new, lower principal balance after you make a significant lump-sum payment. Unlike a refinance, the term of your loan and your interest rate remain exactly the same. The primary benefit of a recast is that it lowers your required monthly payment, improving your monthly cash flow.

For example, if you owe ,000 on a 30-year fixed mortgage at 6.5% and make a lump-sum principal payment of ,000, your outstanding balance drops to ,000. If you do not recast, your monthly payment remains the same, though you will pay off the loan years earlier. If you request a recast, your lender keeps the remaining term of the loan but reduces your monthly payment to reflect the new ,000 balance, saving you hundreds of dollars every month.

Recasting vs. Refinancing: Key Differences

Understanding the differences between these two financial strategies is crucial for making the right choice:

  • Interest Rate: Refinancing replaces your current loan with a new one at current market rates. Recasting keeps your existing rate.
  • Fees: Refinancing involves closing costs (2% to 5% of the loan amount). Recasting typically costs a flat administrative fee of to .
  • Credit Check: Refinancing requires a full credit check, appraisal, and income documentation. Recasting does not require a credit check.
  • Monthly Payment: Both strategies can lower your monthly payment, but refinancing depends on securing a lower interest rate, whereas recasting depends on the size of your lump-sum payment.

When Should You Consider Recasting?

Recasting is an excellent option if you are happy with your current interest rate but want to lower your monthly expenses. It is also popular among buyers who purchase a new home before selling their old one. Once the old home sells, they can apply the proceeds as a lump sum to the new mortgage and recast the loan to lower their payments.


Frequently Asked Questions

1. Does every lender offer mortgage recasting?

No. Most lenders offer recasting for conventional loans, but government-backed loans like FHA, VA, and USDA loans generally cannot be recast.

2. How much does a recast cost?

Lenders typically charge a flat administrative fee ranging from to to process a mortgage recast.

3. Does recasting shorten my loan term?

No. The maturity date of your mortgage remains exactly the same. Recasting only lowers your monthly payment.

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