Extra Payment Calculator
See how extra mortgage payments can save you thousands in interest and years off your loan.
Loan Details
Extra Payments
Balance Over Time
Side-by-Side Comparison
About the Extra Payment Calculator
Making extra payments on your mortgage is one of the most effective strategies to build equity faster and reduce the total cost of homeownership. This calculator lets you model different extra payment scenarios — including recurring monthly additions and one-time lump-sum payments — and instantly see the impact on your loan. Compare your original payoff schedule side-by-side with the accelerated schedule to see exactly how many months you can eliminate and how much interest you will save. The balance-over-time chart visually demonstrates how extra payments shrink your loan balance more quickly than the standard amortization schedule. Whether you have received a bonus, tax refund, or simply want to add a small amount each month, this tool helps you quantify the long-term financial benefits of paying down your mortgage principal ahead of schedule.
Frequently Asked Questions
How much can I save with extra mortgage payments?
The savings from extra mortgage payments depend on your loan balance, interest rate, and how much extra you pay. As a general example, adding just $200 per month to a $300,000 loan at 6.5% over 30 years can save you over $80,000 in interest and cut more than 6 years off your loan term. The savings are amplified at higher interest rates and with larger extra payments. Even small additional amounts make a meaningful difference because they reduce the principal balance that accrues interest each month, creating a compounding savings effect over the life of the loan.
Should I make extra payments or invest?
This depends on your mortgage interest rate versus your expected investment returns, risk tolerance, and financial goals. If your mortgage rate is high (above 6-7%), paying it down provides an effectively risk-free return equal to your interest rate. If your mortgage rate is lower (3-4%), investing in a diversified portfolio that historically returns 7-10% annually may yield higher long-term wealth. However, paying off your mortgage provides psychological peace of mind and reduces monthly obligations. Many financial advisors recommend a balanced approach: contribute enough to get any employer 401(k) match, then direct extra funds toward mortgage payoff if your rate exceeds 5-6%.
What is principal prepayment?
Principal prepayment refers to any payment made toward your mortgage balance that exceeds the required minimum monthly payment. These extra funds go directly toward reducing the outstanding loan principal rather than paying interest. Most conventional, FHA, and VA loans allow prepayment without penalty, though some older or non-standard loan products may include prepayment penalties. You can prepay through recurring extra monthly payments, periodic lump-sum payments, or by making biweekly payments instead of monthly ones. Always confirm with your loan servicer that extra payments are being applied to principal and not simply advanced toward future payments.
Important Disclosures: Studio 1003 is a technology platform, not a lender, broker, or financial advisor. This tool is provided for informational and educational purposes only and does not constitute a commitment to lend, pre-approval, or loan offer. FHA and VA rates shown are estimated based on current market data and may differ from actual lender rates. Property taxes, insurance, and closing cost estimates are approximations based on state and county averages and may vary. Final loan eligibility, terms, and costs are subject to underwriting approval and official disclosures. APR and closing cost figures will be finalized on your official Loan Estimate and Closing Disclosure. Always consult with a licensed mortgage professional before making financial decisions.