A mortgage recast takes a large principal payment you have already made and uses it to recalculate your monthly payment over the remaining term of your existing loan. Your interest rate does not change, your payoff date does not change, and there is no new loan. The servicer simply re-amortizes the smaller balance, and your required principal and interest payment drops to match.
For a homeowner who has kept a low rate and has come into money, it is often the more sensible move than refinancing.
A Recast Reduces the Payment While Leaving the Rate Alone
When you make a regular extra principal payment on a mortgage, your balance goes down and your loan pays off sooner, but your required monthly payment stays exactly the same. The amortization schedule was set at closing and does not move on its own.
A recast resets that schedule. After you make a substantial lump-sum payment, you ask the servicer to recalculate the payment based on the new balance, the original interest rate, and the months left on the loan. Fannie Mae's Servicing Guide (section C-1.2-01) describes this as re-amortization following a substantial principal curtailment, and it requires the servicer to document the change on Form 181, an Agreement for Modification, Re-Amortization, or Extension of a Mortgage. Fannie Mae also states that a re-amortization is not treated as a loan modification for the purpose of determining future workout eligibility, so it does not carry the credit-reporting consequences of a hardship modification.
Here is how the math plays out on an illustrative loan. Assume a $400,000 loan at 6.5 percent on a 30-year fixed term. The principal and interest payment is about $2,528. Three years in, the balance has fallen to roughly $385,700. A $60,000 lump sum brings the balance down to about $325,700. Recasting that balance over the remaining 27 years drops the payment to roughly $2,135, a reduction of about $393 per month. Your rate and payoff date are unchanged. You can model this on any amortization schedule by entering the new balance and the remaining term.
Recast and Refinance Solve Different Problems
A refinance replaces your loan with a new one. That means a new application, a new credit pull, an appraisal in most cases, full closing costs, and whatever rate the market offers on the day you lock. If current rates are lower than your existing rate, that trade can be worth it. If they are higher, a refinance to lower your payment usually only works by stretching the term back out to 30 years, which raises total interest paid.
A recast does none of that. The servicer keeps your note, your rate, and your remaining term. There is no appraisal, no re-underwriting of your income, and typically only a flat administrative fee set by the servicer. The tradeoff is that a recast cannot lower your rate, cannot shorten your term, and cannot pull cash out. If any of those are the goal, the recast is the wrong tool and a refinance analysis is where the conversation should start.
The practical rule most homeowners land on: a recast makes sense when you like your rate and want a lower payment; a refinance makes sense when you want a better rate or different terms.
Not Every Loan Can Be Recast
Eligibility is set by the loan program and by the company servicing your loan, not by the lender who originated it.
Conventional loans owned by Fannie Mae or Freddie Mac are the loans most commonly recast, and the Fannie Mae Servicing Guide expressly permits servicers to re-amortize a current loan after a substantial curtailment. Jumbo loans held in a bank's own portfolio are often recast-eligible as well, though the bank sets its own rules. Jumbo loans are worth asking about specifically, because the lump sums involved tend to be larger and the payment relief more meaningful.
FHA and VA loans are a different story. Servicers broadly do not offer recasts on government-backed loans, because those loans are pooled into Ginnie Mae securities that do not accommodate payment re-amortization. If you hold an FHA loan or a VA loan, extra principal payments still shorten your loan and reduce total interest, but your required monthly payment will not change unless you refinance.
Adjustable-rate mortgages generally cannot be recast either, since the payment already resets at each adjustment based on the outstanding balance.
Beyond program type, servicers impose their own conditions. Common ones include a minimum lump-sum amount, often expressed as a dollar floor or a percentage of the balance; a requirement that the loan be current with no recent late payments; a minimum number of payments made since closing; a limit on how many recasts are allowed over the life of the loan; and a processing fee. Those terms vary from one servicer to the next, so the only reliable answer comes from calling the company that collects your payment.
The Lump Sum Is the Hard Part
A recast only works if you have a large amount of cash to apply. Typical sources include proceeds from selling a previous home, an inheritance, or a bonus. Some buyers purchase a new home before their old one sells, carry a larger loan than they wanted, and then recast once the sale closes and the equity lands in their account.
Before committing the money, weigh three things. First, a recast locks that cash into home equity, which is illiquid, so an emergency fund and any higher-rate debt usually deserve attention first. Second, compare the payment relief against what the same money could earn elsewhere; at a 6.5 percent mortgage rate, paying down principal is a guaranteed return at that rate, but at a 3 percent rate the comparison is closer. Third, consider whether you actually need the lower payment. If cash flow is comfortable, simply making the lump-sum payment without recasting and continuing to pay the old amount will pay the loan off years earlier. On the illustrative loan above, keeping the $2,528 payment after the $60,000 curtailment would retire the loan in roughly 18 and a half years instead of 27.
How the Recast Process Usually Works
Recasts are handled entirely by your loan servicer, so the process starts with a phone call or a written request to that company rather than to your original lender. Most servicers will confirm eligibility, quote the fee, and tell you whether the lump sum must arrive before or along with the request. Once the funds post and the paperwork is signed, the servicer recalculates the payment and sends a new amortization schedule. Expect the whole process to take several weeks, and keep making your regular payment until the new amount takes effect in writing.
Ask the servicer two questions before sending money. Confirm that the payment will be applied as a principal curtailment rather than as a prepayment of future installments, because the two are processed differently and only a curtailment reduces the balance for recast purposes. And confirm whether the loan is scheduled for a servicing transfer, since some servicers will not process a recast when a transfer is pending.
How Edge Mortgage USA Can Help
Edge Mortgage USA originates conventional, FHA, VA, and jumbo loans for buyers and homeowners across Orlando and Central Florida. Recasts themselves are processed by whichever company services a loan after closing, so Edge Mortgage USA does not perform the recast. Where the team can help is earlier, when the loan is being structured. A buyer who expects a large sum within the first year or two of ownership, such as proceeds from a home sale or a pending bonus, can plan the loan program and term with that in mind, including choosing a conventional loan when recast flexibility matters more than the lower down payment of a government program. Edge Mortgage USA can also run the numbers comparing a recast against a refinance once the cash is in hand.
Talk Through Your Options Before the Money Lands
If you are weighing a lump-sum payment, we can run the recast, refinance, and straight-paydown scenarios side by side using your actual loan terms. Call 703-967-3087 or request a quote through the website to get started.
This article is for general educational purposes only and does not constitute financial, legal, or lending advice. Recast eligibility, minimum amounts, fees, and processing times are set by individual loan servicers and investors and vary by loan program. Confirm the terms that apply to your loan directly with your servicer.
