Recast Mortgage Calculator
Easily calculate how recasting your mortgage impacts your loan.
Recast Analysis
Amortization Comparison
| Month | Original Balance | Original Payment Applied to Principal | Recast Balance | Recast Payment Applied to Principal |
|---|
What is a Recast Mortgage?
A recast mortgage, also known as a loan recast, is a refinancing option that allows you to adjust your mortgage's principal balance without altering the interest rate or the remaining loan term. It's a powerful tool for homeowners who have made significant principal payments or received a large lump sum they wish to apply to their mortgage.
Instead of a full refinance, which involves a new loan application, credit check, and potentially a new interest rate and closing costs, a recast essentially 'restarts' your amortization schedule based on the new, lower principal. This typically leads to a lower monthly payment. It's particularly beneficial when interest rates are not expected to drop significantly, making a traditional refinance less advantageous.
Who should consider a recast mortgage?
- Homeowners who have made substantial extra principal payments over time.
- Individuals who have received an inheritance or other large sum of money they want to use to reduce their mortgage.
- Borrowers who want to lower their monthly payments but are satisfied with their current interest rate and loan term.
- Those who want to avoid the closing costs and hassle associated with a traditional refinance.
Common Misunderstandings about Recasting:
- It lowers your interest rate: A recast does NOT change your interest rate. It only reduces the principal balance.
- It shortens your loan term: The remaining loan term stays the same. Your payment is recalculated for the original remaining duration.
- It requires a full credit check and appraisal: Typically, a recast is a simpler process, often not requiring these. Lenders may have specific requirements, so it's essential to ask.
- It's the same as making an extra payment: While an extra payment reduces principal, a recast is a formal process with the lender to reset the payment schedule based on the new balance.
Recast Mortgage Formula and Explanation
The core of recasting is understanding how a new principal balance affects your monthly payment. The formula used to calculate the new monthly principal and interest (P&I) payment is the standard loan amortization formula, applied with the recast principal balance and the original loan terms.
The Monthly Payment Formula (P&I)
M = P [ i(1 + i)^n ] / [ (1 + i)^n – 1]
Where:
M= Your monthly mortgage paymentP= The principal loan amount (this is the new loan balance after the recast payment)i= Your monthly interest rate (annual rate divided by 12)n= The number of remaining payments (loan term in months)
To calculate the total interest saved, we compare the total payments made under the original loan schedule versus the total payments made under the recast schedule.
Total Interest Saved = (Original Total Payments) - (New Total Payments)
Where:
Original Total Payments = Original Monthly P&I * Original Remaining Term
New Total Payments = New Monthly P&I * Original Remaining Term
Variables Table
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
P (Original Loan Balance) |
The outstanding principal amount of the mortgage before recasting. | Currency (e.g., USD) | $50,000 – $1,000,000+ |
| Extra Payment | Lump sum amount applied to reduce principal. | Currency (e.g., USD) | $1,000 – $100,000+ |
P (New Loan Balance) |
The principal loan amount after the extra payment is applied. | Currency (e.g., USD) | $50,000 – $1,000,000+ |
r (Annual Interest Rate) |
The yearly interest rate of the mortgage. | Percentage (%) | 2% – 10% |
i (Monthly Interest Rate) |
The annual interest rate divided by 12. | Decimal (e.g., 0.045 / 12) | ~0.0017 – 0.0083 |
n (Remaining Term) |
The number of months left until the mortgage is fully paid. | Months | 12 – 360 |
M (Monthly Payment) |
The calculated monthly principal and interest payment. | Currency (e.g., USD) | $500 – $5,000+ |
| Total Interest Saved | The difference in total interest paid between the original and recast loan. | Currency (e.g., USD) | $0 – $100,000+ |
Practical Examples of Mortgage Recasting
Let's illustrate with a couple of scenarios:
Example 1: Significant Extra Payment
- Current Loan Balance: $250,000
- Current Interest Rate: 4.0%
- Remaining Term: 240 months (20 years)
- Extra Payment (for Recast): $50,000
Calculation:
- Original Monthly P&I Payment: Approximately $1,391.29
- New Loan Balance after Recast: $250,000 – $50,000 = $200,000
- New Monthly P&I Payment (with $200k balance, 4.0%, 240 months): Approximately $1,113.03
- Monthly Payment Reduction: $1,391.29 – $1,113.03 = $278.26
- Total Interest Saved Over Remaining 240 Months: ($1,391.29 * 240) – ($1,113.03 * 240) = $333,909.60 – $267,127.20 = $66,782.40
In this case, applying a $50,000 lump sum via recasting significantly lowers the monthly payment and saves over $66,000 in interest.
Example 2: Recasting After Years of Payments
- Original Loan Amount: $400,000
- Original Interest Rate: 5.0%
- Original Term: 360 months
- Time Elapsed: 8 years (96 months)
- Current Loan Balance: Approximately $345,000 (after 96 payments)
- Remaining Term: 264 months (360 – 96)
- Extra Payment (for Recast): $30,000
Calculation:
- Original Monthly P&I Payment: Approximately $2,147.30
- New Loan Balance after Recast: $345,000 – $30,000 = $315,000
- New Monthly P&I Payment (with $315k balance, 5.0%, 264 months): Approximately $1,845.91
- Monthly Payment Reduction: $2,147.30 – $1,845.91 = $301.39
- Total Interest Saved Over Remaining 264 Months: ($2,147.30 * 264) – ($1,845.91 * 264) = $566,875.20 – $487,319.44 = $79,555.76
Even after several years, applying an extra $30,000 through recasting results in a substantial monthly saving and significant long-term interest reduction.
How to Use This Recast Mortgage Calculator
Our Recast Mortgage Calculator is designed for simplicity and accuracy. Follow these steps to understand your potential savings:
- Find Your Current Loan Information: Locate your latest mortgage statement. You'll need your current principal loan balance, your current annual interest rate, and the exact number of months remaining on your loan term.
- Determine Your Extra Payment: Decide on the lump sum amount you plan to pay towards your principal. This is the amount that will be used for the recast.
- Enter Data into the Calculator:
- Input your Current Loan Balance.
- Enter the Extra Payment Amount you intend to make.
- Input your Current Interest Rate (as a percentage, e.g., 4.5 for 4.5%).
- Enter the Remaining Term in Months for your mortgage.
- Click 'Calculate Recast': The calculator will instantly provide:
- Original Monthly P&I Payment: Your current principal and interest payment.
- New Loan Balance After Recast: Your principal balance after the extra payment is applied.
- New Monthly P&I Payment: The recalculated monthly payment based on the new balance, original rate, and remaining term.
- Total Interest Saved: The estimated total interest you will save over the remaining life of the loan compared to not recasting.
- Interpret the Results: Compare your original and new monthly payments to see the immediate savings. The "Total Interest Saved" figure highlights the long-term financial benefit.
- Review the Amortization Chart: The chart and table visually represent how the loan balance decreases over time for both scenarios, emphasizing the impact of the recast.
Selecting Correct Units: Ensure all currency values are entered in the same currency (defaulting to USD). The interest rate should be entered as a percentage, and the term must be in months.
Interpreting Results: The calculator provides P&I (Principal & Interest) payments. Your total monthly mortgage payment may also include escrow for taxes and insurance, which are typically not affected by a recast. The interest saved is an estimate based on the provided inputs and assumes no further extra payments are made.
For precise figures and to understand any lender-specific fees or requirements, always consult directly with your mortgage lender.
Key Factors That Affect Mortgage Recasting
Several elements influence the outcome and benefits of recasting your mortgage:
- Size of the Extra Payment: This is the most direct factor. A larger lump sum payment directly reduces the principal balance more, leading to a lower new monthly payment and greater total interest savings.
- Current Loan Balance: A higher initial loan balance means there's more room for a significant reduction through the extra payment, potentially yielding more substantial savings compared to a smaller balance.
- Interest Rate: While the recast doesn't change the rate, the original interest rate's magnitude is crucial. A higher original rate means more interest is being paid, so a reduction in principal becomes more impactful in terms of interest saved over the loan's life.
- Remaining Loan Term: The longer the remaining term, the more periods over which the reduced principal will accrue less interest. This amplifies the total interest savings from recasting. A shorter term offers less time for savings to accumulate.
- Timing of the Recast: Recasting earlier in the loan's life is generally more beneficial. Early payments on a mortgage are heavily weighted towards interest. Reducing the principal significantly early on prevents a large amount of future interest from accumulating.
- Lender Fees: Some lenders charge a fee for processing a mortgage recast. This fee needs to be factored into the overall cost-benefit analysis. A small fee might be negligible if the interest savings are substantial, but a large fee could erode the benefit.
- Future Financial Goals: Consider your overall financial picture. While recasting saves interest, ensure the lump sum isn't needed for more critical goals like emergency funds, high-interest debt repayment, or investments with potentially higher returns.
Frequently Asked Questions About Recasting Mortgages
- Q1: What is the difference between recasting and refinancing?
- A: Refinancing involves taking out a completely new loan, potentially with a new interest rate, term, and closing costs. Recasting simply adjusts the principal balance of your existing loan without changing the rate or term, usually with minimal fees.
- Q2: Does a mortgage recast require a credit check?
- A: Typically, no. Since you are not taking out a new loan or changing your interest rate, most lenders do not require a credit check or appraisal for a recast. However, policies can vary by lender.
- Q3: Can I recast my mortgage if I have an adjustable-rate mortgage (ARM)?
- A: Yes, you can often recast an ARM. The recast would apply to the current principal balance, but your rate would remain variable according to the terms of your ARM.
- Q4: What are the typical fees associated with a mortgage recast?
- A: Fees vary by lender. Some lenders charge a flat fee (e.g., $250-$500), while others might charge a percentage of the loan balance or have no fee at all. It's crucial to ask your lender about any applicable charges.
- Q5: How long does the recast process take?
- A: The process is generally much quicker than a refinance, often taking from a few days to a couple of weeks, depending on the lender's procedures.
- Q6: What happens to my escrow account when I recast?
- A: A recast typically does not affect your escrow account for taxes and insurance. The balance in your escrow account usually remains the same.
- Q7: Can I make weekly or bi-weekly payments after recasting?
- A: While recasting itself doesn't institute a weekly/bi-weekly payment plan, you can often arrange for such a plan with your lender after the recast is complete. However, simply making extra principal payments consistently can achieve similar results without a formal plan.
- Q8: How do I know if recasting is the right option for me?
- A: Recasting is ideal if you have a lump sum, don't qualify for a lower rate via traditional refinancing, or wish to avoid refinance costs and complexities. Use our calculator to estimate savings and compare it to your financial priorities.