Recast Loan Calculator
Instantly see how a lump-sum payment can lower your monthly mortgage bill by using this recast loan calculator. Enter your current loan details to get started.
What is a Recast Loan Calculator?
A recast loan calculator is a financial tool designed to help homeowners understand the impact of making a large, lump-sum payment towards their mortgage principal. Unlike refinancing, which involves taking out an entirely new loan, recasting (or re-amortizing) adjusts your existing loan. The lender recalculates your monthly payments based on the new, lower balance, while your interest rate and the loan’s end date remain the same. This tool shows you precisely what your new, lower monthly payment will be and how much you could save in interest over the life of the loan.
This process is ideal for individuals who have come into a sum of money (e.g., from a bonus, inheritance, or sale of an asset) and want to reduce their monthly financial obligations without the cost and complexity of a full refinance. Our recast loan calculator simplifies this by providing instant, clear results.
Recast Loan Formula and Explanation
The calculation for a recasted loan uses the standard amortization formula, but it’s applied after the new loan balance is determined. The core of the calculation is the formula for a monthly loan payment (M):
M = P * [r(1+r)^n] / [(1+r)^n - 1]
First, we determine the new principal (P’). This is simply your current balance minus your lump-sum payment. Then, we use the formula above to find the new monthly payment.
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| P | The principal loan balance. For the new calculation, this is Current Balance – Lump Sum. | Currency ($) | $10,000 – $2,000,000+ |
| r | The monthly interest rate. This is your annual rate divided by 12. | Decimal | 0.002 – 0.008 (corresponds to 2.4% – 9.6% APR) |
| n | The number of months remaining on the loan. This does not change when you recast. | Months | 12 – 360 |
Practical Examples of Loan Recasting
Example 1: Significant Inheritance
Sarah has a mortgage with a remaining balance of $400,000, an interest rate of 7.0%, and 25 years (300 months) left. She receives an inheritance of $100,000 and decides to recast her loan.
- Inputs:
- Current Loan Balance: $400,000
- Interest Rate: 7.0%
- Remaining Term: 300 months
- Lump-Sum Payment: $100,000
- Results:
- Original Payment: $2,827/month
- New Loan Balance: $300,000
- New Monthly Payment: $2,120/month
- Monthly Savings: $707/month
By using the recast loan calculator, Sarah sees she can free up over $700 each month in her budget.
Example 2: Post-Bonus Strategy
Tom has a $250,000 loan balance at 6.25% with 180 months remaining. He gets a $25,000 work bonus and wants to lower his payments. Rather than using an extra payment calculator to shorten his term, he wants lower monthly bills.
- Inputs:
- Current Loan Balance: $250,000
- Interest Rate: 6.25%
- Remaining Term: 180 months
- Lump-Sum Payment: $25,000
- Results:
- Original Payment: $2,149/month
- New Loan Balance: $225,000
- New Monthly Payment: $1,934/month
- Monthly Savings: $215/month
How to Use This Recast Loan Calculator
Using our tool is straightforward. Follow these steps for an accurate calculation:
- Enter Current Loan Balance: Input the total amount you currently owe on your mortgage.
- Enter Annual Interest Rate: Provide your current, unchanged interest rate as a percentage.
- Enter Remaining Loan Term: Input the number of months you still have left to pay.
- Enter Lump-Sum Payment: Add the amount you plan to pay down on the principal.
- Click “Calculate”: The recast loan calculator will instantly show your new monthly payment, monthly savings, and total interest saved over the life of the loan.
Key Factors That Affect a Loan Recast
Before proceeding with a recast, consider these important factors:
- Lender Policy: Not all lenders offer recasting. You must check with your mortgage provider first.
- Loan Type: Recasting is typically available for conventional loans. Government-backed loans like FHA and VA loans usually do not qualify.
- Minimum Lump Sum: Most lenders require a minimum payment to initiate a recast, often ranging from $5,000 to $10,000 or a percentage of the loan balance.
- Recasting Fees: While much cheaper than refinancing, there’s usually a small administrative fee, typically a few hundred dollars.
- Timing: It’s best to recast when you plan to stay in the home long-term and want to improve monthly cash flow. If you plan to move soon, the fee may not be worth it.
- Interest Rate Environment: A key benefit of recasting is keeping your existing interest rate. This is highly advantageous if you have a low rate and current market rates are much higher. A mortgage refinance calculator can help you compare options.
Frequently Asked Questions (FAQ) About Loan Recasting
- 1. Is recasting the same as refinancing?
- No. Recasting adjusts your current loan’s payment, keeping the same rate and term length. Refinancing replaces your old loan with a completely new one, with a new rate and term.
- 2. Does recasting affect my interest rate or loan term?
- No. Your interest rate and the original end date of your loan remain exactly the same, which is a major benefit.
- 3. How much does it cost to recast a loan?
- Fees are typically low, often between $150 and $300, but you should confirm the exact amount with your lender.
- 4. Will recasting hurt my credit score?
- No. Since you are not applying for new credit, a recast does not involve a hard credit inquiry and will not impact your credit score.
- 5. When is recasting a better idea than just making extra payments?
- If your primary goal is to lower your mandatory monthly payment and improve cash flow, recasting is the better option. If your goal is to pay off the loan faster and save the most interest, making extra payments without recasting is more effective. You can model this with an amortization calculator.
- 6. Can I recast more than once?
- This depends entirely on your lender’s policy. Some may allow it, while others may limit the number of times you can recast a loan.
- 7. What happens if I use the recast loan calculator and my bank doesn’t offer it?
- If your bank doesn’t offer recasting, your main alternatives are to refinance the loan or simply make extra principal payments to pay the loan down faster, though the latter won’t lower your required monthly payment.
- 8. How is the total interest saved calculated?
- Our recast loan calculator computes the total interest you would pay on the original schedule and compares it to the total interest you will pay on the new, re-amortized schedule. The difference is your total savings.
Related Financial Tools and Internal Resources
Understanding your full financial picture is key. These tools can help you make informed decisions alongside our recast loan calculator:
- Mortgage Refinance Calculator: See if getting a new loan with a different rate and term is a better option than recasting.
- Amortization Calculator: View a detailed, payment-by-payment schedule of your loan to see how principal and interest are paid over time.
- Extra Payment Calculator: Find out how much faster you can pay off your loan by adding a little extra to each monthly payment.
- Home Equity Calculator: Determine the amount of equity you have in your home, which is crucial for financial planning.