Pay Off $300,000 Mortgage Early Calculator (Extra Principal Savings) | OmniCalc Pro

See how adding $300/month to a $300,000 30-year mortgage at 6.8% saves over $109,000 in interest and eliminates 7.5 years of payments.

How $300/Month Slashes $109,000+ Off a $300k Mortgage

On a standard $300,000 30-year fixed mortgage at 6.8%, total interest paid over 360 months is $404,096. By adding just $300/month in extra principal payments, you cut total interest to $294,450 — saving $109,646 and owning your home 7.5 years earlier.