What Is Mortgage Recasting, and Should You Do It Instead of Refinancing?
If you have a mortgage with a good interest rate and a large amount of cash available, refinancing isn’t always the best way to lower your monthly payment.
A mortgage recast, also called mortgage re-amortization, can reduce your payment without replacing your existing loan.
You make a substantial lump-sum payment toward the principal, and the servicer recalculates the monthly payment over the remaining loan term.
The key advantage: you keep your existing mortgage rate.
What Is a Mortgage Recast?
A mortgage recast is a change to the payment calculation on an existing mortgage after you make a substantial principal payment.
For example, suppose you have:
- $400,000 remaining on your mortgage;
- a 3.25% interest rate;
- 25 years remaining;
- and $60,000 available to put toward the principal.
Instead of refinancing the entire loan, you could ask the servicer whether the mortgage is eligible for a recast.
If approved, the new balance is re-amortized over the remaining term. Your interest rate and remaining loan term generally stay the same, while the required principal-and-interest payment decreases.
The exact minimum lump-sum amount, fee and eligibility requirements depend on the loan and servicer.
A Client Who Almost Made an Expensive Mistake
Margaret had a mortgage rate that was significantly lower than the rates available on new loans when she received a $60,000 inheritance.
Her first thought was to refinance. We compared both options.
Refinance: She would replace her existing low-rate mortgage with a new loan at a higher rate, plus closing costs.
Recast: She could apply the $60,000 directly to the principal and ask the servicer to re-amortize the remaining balance while keeping her existing rate.
For her situation, the recast was the better fit. She kept the mortgage rate she already had, reduced her required monthly payment and avoided the costs associated with taking out a new loan.
The Most Important Thing to Know About Mortgage Recasting
Making a large principal payment does not automatically mean your required monthly payment will decrease.
Your loan balance will go down and your equity will increase, but the scheduled payment may remain unchanged unless the servicer actually processes a recast or other applicable loan modification.
If you’re considering a lump-sum payment, ask your servicer specifically:
Is my mortgage eligible for a recast, and what are your requirements?
Don’t assume the payment will automatically be recalculated.
Mortgage Recast vs. Refinancing
The right choice depends on what you’re trying to accomplish.
| If your goal is… | Consider… |
|---|---|
| Lower your payment while keeping a favorable rate | Mortgage recast |
| Get a lower interest rate | Refinance |
| Take cash out of your home equity | Cash-out refinance |
| Change the loan structure or term | Refinance |
| Apply a large lump sum while keeping the existing loan | Recast |
If you’re considering refinancing primarily because you want a lower rate, your first step should be comparing the new rate and total costs against what you already have. See How to Get the Best Mortgage Rate for more factors that can affect mortgage pricing.
If you’re deciding between different mortgage structures rather than simply lowering your payment, Fixed vs. Adjustable-Rate Mortgage may also be useful.
When Does a Mortgage Recast Make Sense?
A recast can be worth considering when:
- you have a substantial lump sum available;
- you’re happy with your current interest rate;
- you want a lower required monthly payment;
- you don’t need to take cash out;
- and your mortgage and servicer allow recasting.
Common sources of a lump sum can include an inheritance, proceeds from selling another property, a large bonus or other substantial cash assets.
A recast generally doesn’t make sense simply because you have extra cash. You should also consider your emergency reserves, other debts, investment opportunities and overall financial plan.
Does Every Mortgage Allow a Recast?
No.
Eligibility depends on the mortgage program, investor/servicer and specific loan terms.
Conventional mortgages may be eligible for recasting, and Fannie Mae has specific servicing provisions for re-amortized loans following a substantial principal curtailment. However, not every conventional loan or servicer offers the same terms.
Government-backed loans can have different rules, so don’t assume that an FHA or VA mortgage can be recast simply because another mortgage can.
Your mortgage servicer can confirm whether your specific loan is eligible and what requirements apply.
Recast or Refinance: Which One Should You Choose?
Think of them as tools for different problems.
A recast is primarily about lowering the payment after reducing the principal while keeping the existing mortgage structure.
A refinance replaces the existing mortgage with a new loan. That can make sense when the new loan provides a meaningful improvement in rate, term or cash-flow structure—or when you need cash out.
If you already have an unusually good mortgage rate, refinancing just to lower the payment may not make sense.
But if your current rate is significantly higher than today’s available rates, refinancing may be the better option.
The right comparison is not simply the new monthly payment. Look at the interest rate, closing costs, remaining term, loan balance and long-term interest cost.
Before You Recast Your Mortgage
Ask your servicer:
- Is my loan eligible for a recast?
- How much principal do I need to pay?
- What is the recast fee?
- How will my new payment be calculated?
- How long will the process take?
- Are there any restrictions on when I can request a recast?
Then compare that option with refinancing using your actual loan numbers.
If you have a large lump sum and a mortgage rate you don’t want to give up, mortgage recasting may be a better option than refinancing.
But a recast doesn’t give you a new interest rate or cash out your equity. It simply recalculates the payment after you reduce the principal.
If you’re not sure which option makes sense, I can run the numbers for both a recast and a refinance and compare the actual costs and payment.
FAQ
What is a mortgage recast?
A mortgage recast re-amortizes an existing mortgage after a substantial principal payment, reducing the required principal-and-interest payment without replacing the loan.
Does a mortgage recast lower your interest rate?
No. A recast generally keeps your existing interest rate. It lowers the payment by recalculating the loan based on the reduced principal balance.
Is a mortgage recast better than refinancing?
Not necessarily. A recast can make sense if you have a good existing rate and a large lump sum. Refinancing may be better if your goal is a lower rate, cash out or a different loan structure.
Does making a large mortgage payment automatically lower the monthly payment?
No. A principal payment reduces your balance, but your scheduled payment generally doesn’t change unless the loan is formally recast or otherwise modified.
How much does a mortgage recast cost?
The fee varies by servicer and loan. It is typically much less expensive than closing a new mortgage, but you should confirm the exact cost with your servicer.
Can FHA or VA loans be recast?
Eligibility depends on the specific loan and servicer. Government-backed loans have different servicing rules, so confirm recast availability before making a large principal payment.
This article is for educational purposes and does not constitute a commitment to lend, an offer of credit, or legal or financial advice. Rates, program guidelines and loan limits are current as of September 23, 2026. All loan scenarios are illustrative composites; individual results depend on credit, income, property and program eligibility. Lender overlays vary. Equal Housing Opportunity.
