A recast is one of the least understood tools in mortgage payoff — it isn't a refinance, it doesn't touch your rate, and most homeowners never hear about it from their servicer.
Key Takeaways
- A recast keeps your rate and remaining term unchanged — it only re-calculates your monthly payment against a smaller balance.
- Most servicers require a minimum lump sum of $5,000–$10,000 and charge a one-time fee of $150–$500.
- On a $350,000, 30-year loan at 6.75%, a $50,000 lump sum in year 5 can lower the payment from about $2,270 to $1,925 a month — roughly $345 in monthly relief.
- FHA, VA, and USDA loans generally do not allow recasting — it's a conventional-loan feature.
- Recasting does not shorten your payoff date the way extra payments or a refinance can — it lowers the payment instead.
- No credit check, no appraisal, and no new closing disclosure — the entire process usually takes 2–6 weeks.
What is mortgage recasting, exactly?
A mortgage recast — sometimes called a loan re-amortization — is when you pay a large lump sum toward your principal balance, and your servicer recalculates your monthly payment based on the new, smaller balance. Your interest rate stays the same. Your remaining number of months stays the same. Only the payment changes, because you're now spreading a smaller balance across the same number of months.
This is different from making a one-time extra principal payment on your own. If you just send extra money to principal without asking for a recast, your payment stays exactly the same and your payoff date moves up instead. A recast is the opposite trade: same payoff date, lower payment.
It's also different from a refinance. A refinance replaces your loan entirely — new rate, new closing costs, new underwriting, sometimes a new term. A recast keeps your original loan and rate in place; it's an adjustment, not a new mortgage.
How does the recast math actually work?
Here's a concrete example so the arithmetic is visible, not just described. Basis: a $350,000 loan, 30-year fixed, 6.75% interest rate.
- The original monthly principal-and-interest payment is about $2,270.
- After 5 years (60 payments) of normal amortization, the remaining balance is about $328,580 — mortgages amortize slowly in the early years because most of each payment is interest.
- The homeowner makes a $50,000 lump-sum payment, dropping the balance to $278,580.
- The servicer re-amortizes that $278,580 over the remaining 25 years (300 months) at the same 6.75% rate.
- The new monthly payment comes out to about $1,925 — roughly $345 less per month than before.
Note what didn't change: the rate (still 6.75%) and the finish line (still 30 years from the original closing date). What changed is the size of the payment needed to hit that same finish line, because there's less principal left to cover. This example uses its own loan basis stated here — it is a separate calculation from this site's extra-payment savings table, which measures a different scenario (adding a fixed amount every month rather than one lump sum plus a recast).
You can run your own numbers with the amortization calculator or the lump-sum payoff calculator before calling your servicer.
Who is eligible for a mortgage recast?
Recasting is a conventional-loan feature. FHA, VA, and USDA loans generally do not allow it at all — those programs are built around a fixed amortization schedule from origination. If you have a government-backed loan and want a lower payment after paying down principal, a refinance is usually your only path.
Even on conventional loans, recasting isn't automatic or guaranteed — it depends on your servicer's policy, not a federal rule. Typical conditions:
- A minimum lump-sum payment, commonly $5,000 to $10,000 (some servicers require 10% of the remaining balance).
- The loan must be current — no missed or late payments in the recent history the servicer checks.
- Some servicers require the loan to be at least 12 months old before they'll recast it.
- Jumbo loans and second mortgages are recast far less consistently than standard conventional first mortgages — ask before assuming.
Because none of this is standardized, the only reliable way to know your options is to call your servicer and ask directly whether they offer recasting, and under what terms. Fannie Mae's Selling Guide lays out the investor-level rules servicers follow for conventional loan re-amortization, which is why recast availability tracks loan type so closely.
What does a recast cost?
Recasting is inexpensive compared with refinancing. Most servicers charge a flat administrative fee, typically $150 to $500, and that's usually the entire cost. There's no appraisal, no title search, no origination fee, and no new closing disclosure — because there's no new loan.
| Cost item | Recast | Refinance |
|---|---|---|
| Application/underwriting fee | None | Typically required |
| Appraisal | Not required | Usually required |
| Total closing costs | $150–$500 flat fee | Often 2%–5% of loan amount |
| Credit check | No | Yes |
How long does recasting take?
Because there's no underwriting, appraisal, or credit pull, a recast is fast. From the day you submit the lump sum and the recast request, most servicers complete the re-amortization in 2 to 6 weeks. Your first adjusted payment typically shows up on the next or second-next billing cycle. Ask your servicer for their specific processing window in writing so you know what to expect on your statement.
How do you actually request a recast?
The process is administrative, not a new loan application, but it does have a specific order of operations. Most servicers want the lump sum and the request handled in this sequence:
- Call your servicer first and ask specifically whether they offer recasting (some call it "re-amortization"), what the minimum lump sum is, and what the fee is. Get this in writing or note the date and representative.
- Confirm the payment must be earmarked correctly. A payment sent through the normal channel without instructions may get applied as a regular extra principal payment instead of triggering a recast — ask exactly how to flag it.
- Send the lump sum along with the signed recast request form most servicers require.
- Wait for confirmation that the recast was processed, and check your next 1–2 statements to confirm the new, lower payment actually appears.
Skipping step 2 is the most common mistake — homeowners send a large payment expecting a recast, and it silently reduces the balance without changing the payment at all, because the servicer treated it as an ordinary extra payment rather than a recast trigger.
Recast vs. extra payments vs. refinancing
These three options often get confused because they all involve putting more money toward your mortgage, but they produce different outcomes.
| Option | Effect on payment | Effect on payoff date | Rate change? | Cost |
|---|---|---|---|---|
| Recast | Lower | Unchanged | No | $150–$500 |
| Extra payments, no recast | Unchanged | Earlier | No | None |
| Refinance | Depends on new rate/term | Depends on new term | Yes | 2%–5% of loan |
If your goal is to be mortgage-free as fast as possible, ongoing extra principal payments without a recast usually beats recasting, because a recast trades your progress for lower monthly cash flow instead of an earlier finish line. If your goal is monthly breathing room after a windfall — an inheritance, a bonus, or a home sale — a recast delivers that without the cost or hassle of refinancing. For a side-by-side on when refinancing wins outright, see our mortgage recast vs. refinance comparison.
When does recasting make the most sense?
- You received a windfall but want to preserve some liquidity rather than dumping the entire sum into extra payments with no payment relief.
- Your rate is already low and refinancing would move you to a worse rate in today's market — a recast lets you use extra cash without touching a good rate.
- You want lower required monthly cash flow heading into retirement or a income change, even though the loan still finishes on schedule.
- You have an FHA/VA/USDA loan — this one's a non-starter; skip to extra payments or a refinance instead, since recasting isn't available.
Talk to a CPA about how a large lump-sum payment interacts with your broader tax and cash-flow picture before committing funds you might need elsewhere.
Frequently Asked Questions
Does recasting hurt my credit score?
No. A recast doesn't involve a credit check or a new loan application, so it has no direct effect on your credit score. Making your existing payments on time, as always, is what continues to help your score.
Can I recast more than once on the same loan?
Some servicers allow multiple recasts over the life of a loan, each time you make another qualifying lump sum; others limit it to once. This is servicer policy, not a regulatory limit, so confirm directly with your loan servicer before planning around a second recast.
Is a recast the same as loan modification?
No. A loan modification changes the terms of your loan, usually to help a borrower in financial hardship, and can involve a new rate or extended term. A recast is a routine administrative re-amortization for borrowers who are current on payments and simply want a lower payment after reducing principal.
Does the interest saved from a recast show up immediately?
The lump sum itself reduces the balance immediately, which reduces the total interest that will accrue over the remaining term. The visible effect on your statement is a lower required payment starting on the next cycle after processing, not a separate interest refund.
What happens to escrow when I recast?
Your escrow account for taxes and insurance is unaffected by a recast — it's calculated independently based on your annual tax and insurance costs. Only the principal-and-interest portion of your payment changes.