Prepayment Mortgage Calculator with Extra Payments
Simulate the compounding impact of extra monthly payments, annual bonus contributions, and one-off windfalls on your residential mortgage.
Explore specialized calculators, mathematical formula guides, and accelerated repayment strategies:
Mortgage Parameters
🚀 Extra Payment Accelerators
🏁 100% Home Equity Milestone:
With your extra payments, you will completely eliminate your mortgage balance in 0 years!
Amortization Schedule
Interactive breakdown of balance, interest, and prepayment impact
| Period | EMI Paid | Principal Paid | Extra Prepayment | Interest Paid | Total Payment | Remaining Balance |
|---|
Frequently Asked Questions
How does this prepayment mortgage calculator calculate interest savings?
This calculator constructs a complete 360-month amortization schedule comparing your baseline mortgage with an accelerated schedule containing your extra payments. It tracks the exact daily reducing balance, calculating the compound interest avoided and the exact month you achieve 100% home equity.
Can I increase my extra mortgage payments as my income grows?
Yes! Stepping up your prepayments (for example, starting with +$100/month and increasing by 5-10% annually) is one of the most painless and effective ways to eliminate 10+ years from a 30-year mortgage.
What is the difference between making extra payments and refinancing?
Refinancing replaces your entire loan to get a lower interest rate, but incurs $3,000–$6,000 in closing costs and resets your loan term. Making extra principal payments achieves massive interest savings without paying any closing fees or altering your loan contract.
Do extra payments affect property taxes or homeowners insurance (escrow)?
No. Extra payments apply strictly to your loan's Principal Balance. Your property tax and homeowners insurance escrow amounts remain determined by your local tax municipality and insurance provider.