LoanMath

Extra payments on a $500,000 mortgage at 7%

Amortization computed month by month.

$75,168

saved by paying $100 extra a month on a $500,000 30-year mortgage at 7% (base payment $3,327)

Savings by extra payment

ExtraPaid off inInterest savedTime saved
+$50/mo28 yr 7 mo$40,1611 yr 5 mo
+$100/mo27 yr 4 mo$75,1682 yr 8 mo
+$200/mo25 yr 2 mo$133,5604 yr 10 mo
+$300/mo23 yr 5 mo$180,6286 yr 7 mo
+$500/mo20 yr 7 mo$252,5369 yr 5 mo
+$1,000/mo16 yr 1 mo$363,47813 yr 11 mo

Principal and interest only; baseline interest $697,544. Confirm your lender applies extra payments to principal.

FAQ

How much does $100 extra a month save on a $500,000 mortgage at 7%?

About $75,168 in interest, and the loan is paid off in 27 yr 4 mo instead of 30 years.

Is it better to invest instead?

Prepaying earns a guaranteed 7% return. Investing may earn more over long periods but with risk; many people first capture any 401(k) match and build an emergency fund.