LoanMath

Extra payments on a $600,000 mortgage at 6%

Amortization computed month by month.

$58,423

saved by paying $100 extra a month on a $600,000 30-year mortgage at 6% (base payment $3,597)

Savings by extra payment

ExtraPaid off inInterest savedTime saved
+$50/mo28 yr 11 mo$30,6911 yr 1 mo
+$100/mo27 yr 11 mo$58,4232 yr 1 mo
+$200/mo26 yr 1 mo$106,6933 yr 11 mo
+$300/mo24 yr 7 mo$147,4155 yr 5 mo
+$500/mo22 yr 1 mo$212,7137 yr 11 mo
+$1,000/mo17 yr 8 mo$320,59012 yr 4 mo

Principal and interest only; baseline interest $695,029. Confirm your lender applies extra payments to principal.

FAQ

How much does $100 extra a month save on a $600,000 mortgage at 6%?

About $58,423 in interest, and the loan is paid off in 27 yr 11 mo instead of 30 years.

Is it better to invest instead?

Prepaying earns a guaranteed 6% return. Investing may earn more over long periods but with risk; many people first capture any 401(k) match and build an emergency fund.