Mortgage Recasting Calculator
Calculate Your New Mortgage Payment
See how a lump-sum payment can lower your monthly mortgage payments through Mortgage Recasting.
What is Mortgage Recasting?
Mortgage Recasting (or loan recasting) is a process where your lender re-amortizes your remaining mortgage balance after you make a significant lump-sum payment towards the principal. Unlike refinancing, your interest rate and loan term typically remain the same, but your monthly principal and interest payments are recalculated based on the new, lower balance and the original remaining term. This results in a lower monthly payment. Mortgage Recasting is a way to reduce your mortgage payment without changing your interest rate.
Individuals who have come into a sum of money (e.g., inheritance, bonus, sale of assets) and want to reduce their monthly mortgage burden without the costs and hassle of refinancing might consider Mortgage Recasting. It’s generally simpler and cheaper than refinancing. Not all lenders offer Mortgage Recasting, and it’s usually only available for certain types of loans (like conventional loans, not typically FHA or VA).
Common misconceptions about Mortgage Recasting include thinking it changes your interest rate (it doesn’t) or that it’s the same as making extra payments (it’s not – extra payments reduce the term, while recasting reduces the payment amount while keeping the original term). Understanding Mortgage Recasting helps homeowners make informed decisions.
Mortgage Recasting Formula and Mathematical Explanation
The core of Mortgage Recasting involves recalculating the monthly payment using the standard loan amortization formula after a lump-sum payment reduces the principal balance.
The formula for the monthly payment (M) is:
M = P [ i(1 + i)^n ] / [ (1 + i)^n – 1 ]
Where:
- P = Principal loan balance
- i = Monthly interest rate (annual rate / 12)
- n = Number of remaining loan payments (months)
When you make a lump-sum payment and request a Mortgage Recasting:
- Your principal balance (P) is reduced by the lump-sum amount.
- The monthly interest rate (i) and the remaining number of payments (n) stay the same as per your original loan agreement.
- The lender uses the new, lower P, the original i, and original remaining n to calculate a new, lower monthly payment (M).
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Poriginal | Original Principal Balance Before Lump Sum | Currency ($) | $50,000 – $1,000,000+ |
| L | Lump-Sum Payment | Currency ($) | $5,000 – $100,000+ |
| Pnew | New Principal Balance (Poriginal – L) | Currency ($) | Lower than Poriginal |
| i | Monthly Interest Rate (Annual Rate / 1200) | Decimal | 0.002 – 0.007 |
| n | Remaining Number of Months | Months | 60 – 360 |
| Moriginal | Original Monthly Payment | Currency ($/month) | $300 – $5,000+ |
| Mnew | New Monthly Payment After Recasting | Currency ($/month) | Lower than Moriginal |
The total interest saved through Mortgage Recasting is the difference between the total interest you would have paid with the original payment schedule and the total interest you will pay with the new, lower payments over the same remaining term, considering the reduced principal.
Practical Examples (Real-World Use Cases)
Example 1: Inheritance Used for Recasting
Sarah has a $300,000 remaining balance on her mortgage with a 6% interest rate and 25 years (300 months) left. Her current monthly payment is about $1,932.90. She receives a $50,000 inheritance and decides to make a lump-sum payment and request a Mortgage Recasting.
- Current Balance: $300,000
- Interest Rate: 6%
- Remaining Term: 300 months
- Lump-Sum: $50,000
- New Balance: $250,000
After recasting, her new monthly payment, based on $250,000 over 300 months at 6%, becomes approximately $1,610.75. This is a monthly saving of around $322.15. The Mortgage Recasting lowered her payments significantly.
Example 2: Bonus Payment
David has $180,000 left on his mortgage at 5% with 15 years (180 months) remaining. His payment is $1,423.43. He gets a $20,000 bonus and applies it to his mortgage, then opts for Mortgage Recasting.
- Current Balance: $180,000
- Interest Rate: 5%
- Remaining Term: 180 months
- Lump-Sum: $20,000
- New Balance: $160,000
His new payment after Mortgage Recasting will be about $1,265.27, saving him $158.16 per month while keeping the 15-year term. He now has more monthly cash flow thanks to the Mortgage Recasting.
How to Use This Mortgage Recasting Calculator
- Enter Current Remaining Loan Balance: Input the total amount you still owe on your mortgage before making any lump-sum payment.
- Enter Current Annual Interest Rate: Input the yearly interest rate of your current mortgage.
- Enter Remaining Loan Term: Input the number of years left until your mortgage is fully paid off according to the original schedule.
- Enter Lump-Sum Payment Amount: Input the extra amount you plan to pay towards your mortgage principal that you want to use for the Mortgage Recasting process.
- Click “Calculate”: The calculator will instantly show your new estimated monthly payment, original payment, and potential interest savings after Mortgage Recasting.
- Review Results: The primary result is your new lower monthly payment. You’ll also see your original payment for comparison, the new balance after the lump sum, and the total interest you might save over the life of the loan if you maintain the recast payments for the original term. The table and chart give a visual comparison.
- Decision-Making: Use these results to decide if Mortgage Recasting is a good option for you compared to simply making extra payments (which shortens the term) or refinancing (which changes the rate and term, and has higher costs). Contact your lender to confirm they offer Mortgage Recasting and any associated fees.
Key Factors That Affect Mortgage Recasting Results
- Lump-Sum Amount: The larger the lump-sum payment, the lower the new principal balance, and thus the lower the new monthly payment after Mortgage Recasting.
- Remaining Loan Term: The effect of the lump sum on payment reduction is more pronounced when more time is remaining on the loan. Recasting re-amortizes over the *original* remaining term.
- Current Interest Rate: While the rate doesn’t change with Mortgage Recasting, a higher rate means more of your original payment was interest, so reducing the principal can have a noticeable effect on the new payment.
- Lender’s Policies and Fees: Not all lenders offer Mortgage Recasting, and those that do may have minimum lump-sum requirements and charge a fee (though usually much lower than refinancing costs).
- Loan Type: Mortgage Recasting is more commonly available for conventional loans. Government-backed loans (FHA, VA, USDA) often do not allow it.
- Financial Goals: If your goal is lower monthly payments, Mortgage Recasting is ideal. If your goal is to pay off the mortgage faster, simply making extra payments without recasting might be better, as it directly reduces the term. Compare with amortization schedule changes.
- Cash Flow Needs: Recasting improves monthly cash flow by lowering payments, which can be beneficial if your income is variable or you have other financial priorities.
Frequently Asked Questions (FAQ)
Mortgage Recasting involves recalculating your monthly payment based on a lower principal after a lump-sum payment, keeping your original interest rate and term end date. Refinancing involves getting a completely new loan, often with a different interest rate and term, to replace your old one. Refinancing has higher closing costs and credit checks.
No, Mortgage Recasting does not change your interest rate or the original maturity date of your loan.
Yes, lenders usually charge a fee for Mortgage Recasting, but it’s typically much lower than refinancing closing costs, often a few hundred dollars.
Lenders often have a minimum lump-sum requirement for Mortgage Recasting, which can vary (e.g., $5,000, $10,000, or a percentage of the loan balance). Check with your lender.
This depends on your lender’s policy. Some may allow it multiple times, while others may limit it or have waiting periods between recasts.
It depends on your goal. Mortgage Recasting lowers your monthly payment while keeping the term. Extra mortgage payments without recasting shorten your loan term and save more interest overall, but don’t lower the required monthly payment. Explore home loan modification options if you need payment reduction.
No, not all lenders offer it, and it’s less common for government-backed loans. You’ll need to contact your mortgage servicer to see if Mortgage Recasting is an option for your loan.
No, Mortgage Recasting itself does not directly impact your credit score as it’s not a new loan application or a change in your payment history reporting (as long as you keep making payments).
Related Tools and Internal Resources
- Amortization Calculator: See how your loan balance decreases over time with or without extra payments.
- Refinance Calculator: Compare the costs and benefits of refinancing your mortgage to a new rate and term versus Mortgage Recasting.
- Extra Payment Calculator: Calculate how making extra payments can shorten your loan term and save interest, as an alternative to Mortgage Recasting.
- How to Reduce Mortgage Payments: Explore various strategies, including Mortgage Recasting and other options, to lower your monthly housing costs.
- Loan Modification Options: Understand different ways to modify your home loan if you’re facing difficulties, Mortgage Recasting being one form for those who can make a lump-sum payment.
- Pay Off Mortgage Early Strategies: Learn about methods like bi-weekly payments, extra payments, and how Mortgage Recasting fits into your overall mortgage strategy.