$100,000 30-Year Fixed Mortgage Calculator

$100,000 30-Year Fixed Mortgage at 6.5%

A $100,000 30-year fixed loan at 6.5% is the classic starter mortgage. Because the rate never changes, the payment stays identical for the entire term and you always know exactly what leaves your account each month.

Your monthly payment

At a 6.5% annual rate the monthly interest rate is 0.065 / 12 = 0.0054167 and the term is 360 months. Filling those into the standard amortization formula gives a principal-and-interest payment of $632.06 every month.

Total cost over 30 years

Multiply $632.06 by 360 payments and you repay about $227,542. Of that, $127,542 is interest and only $100,000 is the money you actually borrowed, an interest-to-total ratio of roughly 56%.

• Monthly principal and interest: about $632
• Total repaid over the life of the loan: about $227,500
• Total interest: about $127,500 (roughly 56% of everything you pay)
• First payment: about $542 interest and just $90 principal

15-year or 30-year?

A 15-year loan at the same 6.5% rate would raise the payment to roughly $871 a month, about 38% more, but would cut total interest to about $56,800 and save you close to $70,700. The 30-year route trades a higher lifetime cost for a much lower monthly figure.

Budgeting beyond the payment

The $632 figure covers principal and interest only. Property tax, homeowners insurance and any mortgage insurance sit on top of it, so the real monthly cost of a $100,000 loan is higher than the loan payment alone. Lenders generally prefer total housing costs to stay below about 28% of gross monthly income.