Reference table
$800,000 mortgage payment in Canada (2026)
$800,000 at 5.00% over 25 years with semi-annual compounding is $4,652.84 a month, about $595,852 in interest over the full amortization. At 5.00%, a 20-year amortization is $5,257.00 a month and a 30-year amortization is $4,269.53. Over 25 years the table below runs from $3,994.16 at 3.50% to $5,852.44 at 7.50%. Lenders qualify you at max(contract + 2%, 5.25%), so at 5.00% you must carry the 7.00% payment: $5,603.33 a month. Principal and interest only; 5.00% is a table row, not a quoted lender rate. Monthly payments on a $800,000 mortgage at rates from 3.5% to 7.5%, across 20, 25, and 30-year amortizations — plus the total interest a 25-year amortization costs at each rate. Computed with Canadian semi-annual compounding, the same engine as our mortgage calculator.
Monthly payment on $800,000 by rate and amortization
| Rate | 20-year | 25-year | 30-year | Interest (25-yr total) |
|---|---|---|---|---|
| 3.50% | $4,629.30 | $3,994.16 | $3,581.09 | $398,249 |
| 3.75% | $4,731.06 | $4,100.45 | $3,691.79 | $430,134 |
| 4.00% | $4,833.97 | $4,208.16 | $3,804.15 | $462,448 |
| 4.25% | $4,938.04 | $4,317.28 | $3,918.14 | $495,184 |
| 4.50% | $5,043.24 | $4,427.78 | $4,033.72 | $528,335 |
| 4.75% | $5,149.57 | $4,539.64 | $4,150.87 | $561,893 |
| 5.00% | $5,257.00 | $4,652.84 | $4,269.53 | $595,852 |
| 5.25% | $5,365.53 | $4,767.34 | $4,389.67 | $630,203 |
| 5.50% | $5,475.13 | $4,883.13 | $4,511.25 | $664,940 |
| 5.75% | $5,585.80 | $5,000.18 | $4,634.24 | $700,053 |
| 6.00% | $5,697.51 | $5,118.45 | $4,758.59 | $735,536 |
| 6.25% | $5,810.25 | $5,237.93 | $4,884.26 | $771,380 |
| 6.50% | $5,924.00 | $5,358.59 | $5,011.22 | $807,577 |
| 6.75% | $6,038.75 | $5,480.40 | $5,139.42 | $844,119 |
| 7.00% | $6,154.49 | $5,603.33 | $5,268.83 | $880,998 |
| 7.25% | $6,271.18 | $5,727.35 | $5,399.40 | $918,205 |
| 7.50% | $6,388.82 | $5,852.44 | $5,531.09 | $955,732 |
Principal + interest only — property tax, insurance, and CMHC premiums excluded. Quoted rates compounded semi-annually, the standard Canadian fixed-rate convention. Figures verified 2026-07-13.
What this mortgage means in practice
A $800,000 mortgage with 20% down corresponds to a purchase around $1,000,000; with less than 20% down, CMHC insurance is added to the loan. To qualify, lenders stress-test you at your contract rate + 2% — so at a 5% quoted rate you must carry the payment as if it were 7% ($5,603/month over 25 years). Check what your income supports with the affordability tool and budget closing cash with the closing costs calculator.
Frequently asked questions
What is the monthly payment on a $800,000 mortgage at 5%?
About $4,653 per month with a 25-year amortization, using Canadian semi-annual compounding. Over the full 25 years that's roughly $595,852 in interest on top of the $800,000 borrowed.
What income do I need for a $800,000 mortgage?
As a rough guide, lenders cap housing costs near 39% of gross income and test you at your rate + 2%. Exact qualification depends on rate, property taxes, heat, and other debts — run your numbers in our affordability tool for a real answer.
What house price does a $800,000 mortgage support?
With 20% down, a $800,000 mortgage buys a home around $1,000,000. With less than 20% down the mortgage includes a CMHC premium, so the same loan supports a somewhat lower purchase price.
Why is the payment lower than US calculators show?
Canadian fixed-rate mortgages are normally compounded semi-annually, which gives a slightly lower effective monthly rate than the US monthly-compounding convention.
Educational only — not financial advice. Rates shown are illustrative, not offers. Confirm payments and qualification with your lender.