Frequently Asked Questions

A mortgage recast calculator is a tool that helps homeowners estimate the new monthly payment and total interest savings after making a lump sum payment toward their mortgage principal. Try our free Mortgage Recast Calculator to see your potential savings instantly.

Mortgage recasting is the process of making a large lump sum payment toward your loan's principal balance. After the payment, your lender re-amortizes the remaining loan balance into lower monthly payments — while keeping the same interest rate and loan term.

No. Recasting reduces your monthly payment but keeps the original loan term intact. The remaining months stay the same — your payment is simply recalculated on the reduced balance. If you want to shorten your loan term, consider making extra payments each month instead.

Often not. The lump sum is not lost (it becomes home equity that you get back when you sell), but the main benefit of a recast is a lower monthly payment over many years. If you will sell soon, you may pay the recast fee for only a few months of lower payments, and that cash might be more useful elsewhere. A recast pays off best for owners who expect to keep the home, and the lower payment, for a long stretch.

You will need your original loan amount, annual interest rate, original loan term, the number of monthly payments you have already made, the lump sum you plan to pay toward principal, and your lender's recast fee. The calculator works out your current balance for you.

Once you make the lump sum payment and submit any required paperwork to your lender, it typically takes 2–4 weeks for the new payment amount to take effect. Your next billing statement will reflect the reduced monthly payment.

Policies vary by lender, but many allow you to recast multiple times over the life of the loan. However, fees and minimum payment requirements may apply each time. Always check with your lender before planning multiple recasts.

After receiving your lump sum payment, the lender recalculates (re-amortizes) your monthly payment using: the new lower principal balance, your original interest rate, and the remaining term in months. The formula is the same standard amortization formula used for all fixed-rate loans.

Recasting itself does not typically have direct tax implications. However, paying down principal means less interest paid over time, which could slightly reduce your mortgage interest deduction. Consult a tax professional for advice specific to your financial situation.

Unfortunately, no. Government-backed loans — FHA, VA, and USDA loans — are generally not eligible for mortgage recasting. Recasting is primarily available for conventional mortgages held by private lenders or Fannie Mae/Freddie Mac conforming loans.

Lenders almost always require you to be current on your mortgage payments to qualify for a recast. If you are behind, you will need to bring the account current first. Discuss your situation with your lender to explore available options.

It depends entirely on your lender's policies. Some lenders allow recasting for ARMs, while others do not. Contact your lender directly to confirm eligibility for your specific loan type.

There is no universal requirement, but most lenders set a minimum lump sum — typically $5,000 to $10,000 or more. Generally, the more you pay toward the principal, the greater your monthly payment reduction and interest savings. Your current balance and rate also determine the impact.

Yes, most lenders charge a one-time administrative fee to process a recast, typically ranging from $150 to $500. This is significantly less than refinancing costs, which can run 2–5% of the loan amount. Always confirm the fee with your lender before proceeding.

Recasting does not typically affect your credit score. Unlike refinancing, it does not involve a credit inquiry, opening a new loan, or changing your credit terms in any significant way. Your existing mortgage account simply continues with a lower monthly payment.

Yes. Reducing the principal balance reduces the total interest paid over the life of the loan. Because the loan term stays the same and your payment drops, the savings are smaller than if you made the same prepayment and kept paying your original amount. Use our Mortgage Recast Calculator to see your exact savings.

It depends on your situation. Recasting is simpler — no credit check, no appraisal, no closing costs, and you keep your existing rate. Refinancing can potentially get you a lower interest rate but involves significant fees and paperwork. If your current rate is already low, recasting is usually the better choice.

Our calculator uses the same standard amortization formula your lender uses, so results should be very close to your lender's figures. Slight variations may occur due to lender-specific policies, rounding, or additional fees. Always confirm final numbers with your lender.

Yes. Our Mortgage Recast Calculator is completely free and needs no sign-up or personal details. We believe clear financial tools should be accessible to everyone. It shows your current vs. new payment, total interest saved, and a full amortization schedule.

Our calculator works best for conventional fixed-rate mortgages. Government-backed loans (FHA, VA, USDA) are generally not eligible for recasting. The calculator will still run the math — but confirm eligibility with your lender before making any lump sum payment.

We do not ask for your name or any personal details, and we do not sell your information. The numbers you enter are used only to calculate your results and are kept temporarily in your browser session so your results and amortization table can be shown. See our Privacy Policy for details on cookies and analytics.