Mortgage Prepayment Calculator with Extra Payments
Simulate extra monthly payments, annual bonus contributions, and one-off lump sums to see your accelerated mortgage payoff date and interest savings.
Explore specialized calculators, mathematical formula guides, and accelerated repayment strategies:
Mortgage Parameters
🚀 Extra Payment Accelerators
🏁 Accelerated Payoff Horizon:
With your extra payment plan, your mortgage is completely paid off 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 do extra payments accelerate a mortgage payoff?
Every extra dollar paid toward your mortgage goes 100% directly to your principal balance. Because mortgage interest compounds on the remaining balance, reducing the principal immediately lowers every future monthly interest calculation, compressing a 30-year mortgage into 15 to 20 years.
Can I make both monthly extra payments and annual bonus payments?
Yes! This calculator allows you to combine extra monthly payments with recurring yearly bonus contributions and one-time windfalls to see their combined compounding impact on your mortgage payoff date.
Will making extra mortgage payments trigger a prepayment penalty?
Most conventional US fixed and ARM mortgages have 0% prepayment penalties. In the UK, Canada, and Australia, fixed mortgages typically permit 10% to 20% penalty-free overpayments per year. Always confirm with your lender's servicing portal.
What is the fastest way to pay off a 30-year mortgage with extra payments?
The fastest strategy is combining a modest extra monthly principal payment ($200–$300) with paying 1 extra EMI each year from your tax refund or bonus. This dual approach frequently eliminates 8 to 12 years from your mortgage.