Monthly payment, total interest, and amortization for a $100,000 mortgage across interest rates and terms.
Quick answer: A $100,000 mortgage at 6.5% over 30 years costs about $632 per month in principal and interest, with roughly $127,544 of total interest over the life of the loan in Canada. Adjust the rate and term below to match your offer.
How the monthly principal-and-interest payment on a $100,000 loan changes with the interest rate and term. A longer term lowers the monthly payment but raises total interest; a higher rate raises both.
| Rate \ Term | 15 yrs | 20 yrs | 30 yrs |
|---|---|---|---|
| 5.00% | $791 | $660 | $537 |
| 5.50% | $817 | $688 | $568 |
| 6.00% | $844 | $716 | $600 |
| 6.50% | $871 | $746 | $632 |
| 7.00% | $899 | $775 | $665 |
Figures are principal & interest only and exclude property tax, insurance, and fees. Total interest on a 30-year term at 6.00% comes to $115.84K.
The level monthly payment for a fully-amortizing fixed-rate loan is:
Where: P = loan amount (price − down payment), r = monthly rate (annual ÷ 12), n = total payments (years × 12), and i = annual inflation used to discount future payments to today's money.
Borrowing $320,000 (a $400,000 home with 20% down) at 6.5% for 30 years means a monthly payment of about $2,023 and roughly $408,000 in total interest — more than the amount borrowed. At 2.5% inflation, the real lifetime cost of those payments is about $514,000 in today's money rather than the $728,000 nominal total.
On that same $320,000 loan, adding $200 a month to every payment clears the mortgage about 4.5 years early and saves roughly $86,000 in interest.
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