Recast Calculator Mortgage
Instantly see how a lump-sum payment could lower your monthly mortgage bill. This recast calculator mortgage tool provides a clear before-and-after comparison of your payments and interest savings.
Enter the total amount you currently owe on your mortgage.
Your current annual mortgage interest rate.
How many years are left on your mortgage?
The extra amount you plan to pay towards the principal.
Your New Monthly Payment
Original Monthly Payment
$0.00
Monthly Savings
$0.00
Total Interest Savings
$0.00
New Loan Balance
$0.00
What is a Recast Calculator Mortgage?
A recast calculator mortgage is a financial tool designed to show homeowners the effect of making a significant lump-sum payment towards their mortgage principal. Unlike a standard refinance, a mortgage recast (or re-amortization) keeps your interest rate and loan term the same. Instead, the lender recalculates your monthly payments based on the new, lower balance. The result is a more manageable monthly payment for the remainder of your loan’s term.
This process is ideal for individuals who have come into a sum of money—perhaps from a bonus, inheritance, or sale of an asset—and wish to reduce their monthly financial obligations without the costs and hassle of refinancing. Our recast calculator mortgage helps you quantify this benefit precisely. Check out our guide to mortgage points to understand other ways to alter your loan.
The Mortgage Recast Formula and Explanation
The calculation behind a mortgage recast is a straightforward application of the standard loan amortization formula, applied to the new principal balance. The formula for the new monthly payment (M) is:
M = P [r(1+r)^n] / [(1+r)^n – 1]
This formula is what our recast calculator mortgage uses to find your new payment instantly. Here’s what each variable means in the context of a recast:
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| P | New Principal Balance | Currency ($) | $50,000 – $1,000,000+ |
| r | Monthly Interest Rate | Percentage (%) | Annual Rate / 12 |
| n | Remaining Number of Payments | Months | 1 – 360 |
Practical Examples of Mortgage Recasting
Understanding the numbers with real-world scenarios makes the benefit clear. Here are a couple of examples showing how the recast calculator mortgage works.
Example 1: Significant Lump-Sum Payment
- Inputs:
- Current Loan Balance: $300,000
- Interest Rate: 7.0%
- Remaining Term: 25 years (300 months)
- Lump-Sum Payment: $75,000
- Results:
- Original Monthly Payment: $2,120.34
- New Principal Balance: $225,000
- New Monthly Payment: $1,590.25
- Monthly Savings: $530.09
- Total Interest Saved over the remaining term: $84,147
Example 2: A More Modest Payment
- Inputs:
- Current Loan Balance: $450,000
- Interest Rate: 6.25%
- Remaining Term: 28 years (336 months)
- Lump-Sum Payment: $25,000
- Results:
- Original Monthly Payment: $2,875.98
- New Principal Balance: $425,000
- New Monthly Payment: $2,715.82
- Monthly Savings: $160.16
- Total Interest Saved over the remaining term: $28,829
If you’re considering selling instead, our seller net proceeds calculator can help you estimate your earnings.
How to Use This Recast Calculator Mortgage
Our tool is designed for simplicity and accuracy. Follow these steps to determine your potential savings:
- Enter Your Current Loan Balance: Input the exact principal amount you currently owe. You can find this on your latest mortgage statement.
- Provide Your Interest Rate: Enter your current annual interest rate. This rate will not change during the recast.
- Input Remaining Term: Enter the number of years left on your loan.
- Specify Your Lump-Sum Payment: This is the core of the recast. Enter the amount you plan to pay down on the principal.
- Analyze Your Results: The recast calculator mortgage will automatically update, showing your new, lower monthly payment, along with your monthly and total interest savings. The chart and table provide a visual comparison of your loan’s future.
Key Factors That Affect a Mortgage Recast
Several factors can influence whether a mortgage recast is the right choice for you and how beneficial it will be. Considering an ARM vs fixed-rate mortgage can also be part of this decision process.
- Lender Policies: Not all lenders offer mortgage recasting. You must check with your loan servicer first. Many have minimum lump-sum payment requirements (e.g., $5,000 or $10,000).
- The Size of Your Lump-Sum Payment: The larger the payment, the more significant the reduction in your principal and, consequently, your monthly payment and total interest paid.
- Remaining Loan Term: Recasting is often more impactful earlier in the loan term when a larger portion of your payment goes toward interest.
- Your Interest Rate: If you have a low interest rate, recasting is highly attractive because you get to keep it. If your rate is high, refinancing might be a better option to secure a lower rate and payment.
- Associated Fees: While much cheaper than refinancing, lenders typically charge a small administrative fee for recasting, often between $100 and $300.
- Your Financial Goals: If your primary goal is to improve monthly cash flow, a recast is perfect. If you want to pay off the loan faster, simply making extra payments without recasting might be a better strategy.
Frequently Asked Questions (FAQ)
1. Is recasting a mortgage the same as refinancing?
No. Refinancing involves getting a brand new loan, often with a new interest rate and term, which replaces your old one. Recasting simply adjusts your existing loan’s payment schedule after a principal reduction. Your rate and term stay the same.
2. Does mortgage recasting affect my credit score?
No, a mortgage recast does not typically impact your credit score. It does not involve a credit check or the creation of a new loan account, which are the actions that usually trigger credit inquiries.
3. How much money do I need to recast my mortgage?
This depends on your lender. Most require a minimum lump-sum payment, which can range from $5,000 to over $25,000. Use our recast calculator mortgage to see the impact of different amounts.
4. Can I recast any type of mortgage?
Generally, conforming loans (backed by Fannie Mae and Freddie Mac) are eligible. Government-backed loans like FHA, VA, and USDA loans are typically not eligible for recasting.
5. Why would I recast instead of just making extra payments?
Making extra payments shortens your loan term and saves you interest, but it doesn’t lower your required monthly payment. Recasting is specifically for people who want to reduce their mandatory monthly bill to improve cash flow.
6. How long does the recasting process take?
The process is usually quick, often taking 30 to 60 days from the time you submit your request and payment until your new, lower monthly payment takes effect.
7. Can I use this recast calculator mortgage for an investment property?
Yes, the calculations are the same. However, you must confirm with your lender if they allow recasting on investment property mortgages, as policies can differ from primary residences.
8. What if I want to pay my loan off faster?
If your goal is a faster payoff, a recast is not the right tool. Instead, consider using a bi-weekly mortgage calculator to see how splitting payments can accelerate your timeline.