Extra Mortgage Payment Calculator
See how additional monthly or annual payments can dramatically reduce your mortgage term and total interest. Enter your loan details and extra payment amount to see the impact immediately.
Loan Details
Extra Payments
Additional amount paid each month toward principal
One-time extra payment each year (e.g., tax refund, bonus)
Total Interest Saved
$103,449
Pay off 6 years and 11 months early
With vs Without Extra Payments
Without Extra Payments
With Extra Payments
Interest Saved
$103,449
Time Saved
6y 11m
Extra Paid Total
$55,400
Return on Extra $
187%
The Power of Extra Mortgage Payments
Extra mortgage payments are one of the simplest and most powerful wealth-building strategies available to homeowners. Because mortgage interest is calculated on the outstanding balance, every extra dollar you pay creates a ripple effect of savings across all remaining months.
Consider a $300,000 mortgage at 6.5% for 30 years. Your monthly payment is $1,896 and you will pay $382,633 in total interest over the life of the loan. Adding just $200/month in extra payments saves over $100,000 in interest and pays off the loan more than 7 years early.
The earlier in your loan you start making extra payments, the more impactful they are. A $200 extra payment in year 1 saves far more interest than the same $200 in year 20 because the balance it reduces would have accrued interest for decades.
Even irregular extra payments help. Using your annual tax refund, work bonus, or other windfalls to make a lump-sum payment once a year can shave years off your mortgage without changing your monthly budget.
Frequently Asked Questions
How do extra mortgage payments work?
Extra payments go directly toward reducing your loan principal. Since interest is calculated on the remaining balance, paying down principal faster means less interest accrues each month. This creates a compounding savings effect — every extra dollar you pay saves you multiple dollars in future interest.
Is it better to make extra monthly payments or one annual lump sum?
Extra monthly payments are slightly more efficient because they reduce the balance sooner, meaning less interest accrues between payments. However, an annual lump sum (from a tax refund or bonus) is still highly effective. The best approach is whichever you can sustain consistently.
Should I pay extra on my mortgage or invest the money?
If your mortgage rate is below the expected return on investments (historically 7-10% for stocks), investing may yield more over time. However, paying extra on your mortgage is a guaranteed, risk-free return equal to your interest rate. It also provides the psychological benefit of owning your home outright sooner.
Are there penalties for paying extra on a mortgage?
Most conventional mortgages have no prepayment penalty. However, some loans (particularly certain FHA, VA, or subprime loans) may charge a fee for paying off early. Check your loan documents or ask your lender before making extra payments. If there is a penalty, it usually only applies in the first 3-5 years.