Mortgage Recast vs. Refinance: What's the Difference?
Last updated September 2026
Quick answer
A recast uses a lump sum to lower your payment — your rate and remaining term stay exactly the same, and it costs a few hundred dollars with no credit check or appraisal. A refinance replaces the loan entirely — it can lower your rate, but costs thousands and typically resets your term. On a $50,000 lump sum at year 5 of a $400,000 loan, recasting drops the payment to $2,133/month; refinancing that same balance to 5.5% (without even using the lump sum as extra principal) drops it further to $2,156 — but costs far more in total interest either way than simply applying the $50,000 directly and changing nothing else.
The core difference
| Recast | Refinance | |
|---|---|---|
| What changes | Your payment only | Your rate, term, and payment |
| Your interest rate | Unchanged | New rate, negotiated fresh |
| Requires a lump sum | Yes — that's the whole mechanism | No, though you can add one |
| Cost | $150–$500 typically | 2%–5% of the loan amount |
| Credit check / appraisal | Usually neither | Both required |
| Available on | Mostly conventional loans only | Any loan type, subject to qualifying |
| Time to complete | Days to a few weeks | Typically 30–45 days |
Four ways to use $50,000 at year 5
Same $400,000 loan at 6.25%, same $50,000 available in year 5 — four different moves:
| Path | New payment | Payments remaining | Interest from here |
|---|---|---|---|
| A. Recast (keep 6.25% rate) | $2,133.03 | 301 | $316,563 |
| B. Refinance only, no lump sum (5.5%, fresh 30 yr) | $2,156.35 | 360 | $396,477 |
| C. Refinance + apply the $50k first (5.5%, fresh 30 yr) | $1,872.46 (lowest payment) | 360 | $344,277 |
| D. Apply $50k to principal, keep original payment, no recast | $2,462.87 (unchanged) | 222 | $222,523 (lowest total interest) |
Every path except D asks you to trade away total-cost efficiency in exchange for a lower monthly payment. Recasting is the cheapest way to buy a lower payment; combining a rate-improving refinance with the lump sum buys the lowest payment of all four, at real cost — over $120,000 more in interest than path D.
Which one actually fits your goal
- Want the lowest possible monthly payment, cost aside? Refinance and apply any lump sum to the new, lower-rate balance (Path C) — but only if a meaningfully lower rate is actually available to you.
- Want a lower payment as cheaply as possible, rate unchanged? Recast (Path A) — minimal fee, fast, no requalification.
- Want to be debt-free fastest and pay the least total interest? Skip both — apply the lump sum directly and keep making your original payment (Path D). See How to Pay Off Your Mortgage Early.
- Rates have dropped a lot since you got your loan? A refinance alone (Path B), even without a lump sum, can be worth it on its own merits — see When Should You Refinance? for the break-even math.
Things to consider
- Recasting isn't offered by every servicer, and generally isn't available on FHA, VA, or USDA loans — check with your specific servicer before counting on it.
- A recast doesn't touch your rate at all. If your rate is already low, recasting is usually the better fit; if rates have moved a lot, a refinance may lower your payment more, just at a much higher cost.
- Refinancing resets your clock unless you specifically choose a shorter term — see the "hidden cost" discussion in When Should You Refinance Your Mortgage? for the full mechanics.
- You don't have to choose only one. Path C above shows that combining a lump sum with a refinance is a real option when both a rate drop and available cash exist at the same time.
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Frequently asked questions
Does recasting change my interest rate?
No. Recasting only re-amortizes your existing balance over your existing remaining term, at your existing rate. Only a refinance changes your rate.
How much does a recast cost?
Typically far less than refinancing — often $150 to $500, with no appraisal or credit check required by most servicers.
Can I recast an FHA, VA, or USDA loan?
Generally no. Recasting is typically available only on conventional loans, and not every servicer offers it even then.
Is recasting or refinancing better for lowering my payment?
It depends on how much rates have moved since you got your loan. If your rate is already competitive, recasting is usually the cheaper way to lower your payment. If rates have dropped significantly, refinancing can lower your payment further, at a much higher upfront cost.
What's the cheapest way to get out of debt fastest?
Neither recasting nor refinancing — generally the lowest-total-interest path is applying a lump sum directly to principal without recasting or refinancing, and keeping your original payment amount.
Related guides
How to Pay Off Your Mortgage Early
Seven ways to clear a mortgage ahead of schedule, each with the years and interest it saves.
Read moreWhen Should You Refinance Your Mortgage?
The break-even calculation, plus the reset-the-clock cost that can make a lower rate more expensive overall.
Read moreCash-Out Refinance vs. HELOC vs. Home Equity Loan
Three ways to borrow against equity, and why a low existing rate usually rules the cheapest-looking one out.
Read moreWhat Are Mortgage Points and Are They Worth Buying?
What a point costs, what it buys, and the break-even that decides whether it was worth it.
Read moreFigures on this page are generated from the same amortization engine that powers the MortMetrix dashboard, using the example loan stated in each table. They are estimates based on a fixed-rate loan at a constant rate and are not your actual loan terms. This is educational information, not financial advice.