CMHC insurance calculator
CMHC insurance on a $500,000 home with 5% down is $19,000 — 4.00% of the $475,000 loan, added to your mortgage rather than paid up front. But in Ontario you also owe 8% sales tax on that premium, $1,520, and it must be paid in cash on closing day. It cannot be financed.
Your premium gets added to the mortgage. The provincial sales tax on that premium does not — it is cash, due on closing day, and most calculators never mention it.
CMHC premium rates for 2026
| Loan-to-value | Premium | Down payment |
|---|---|---|
| Up to 65% | 0.60% | 35% |
| 65.00% to 75% | 1.70% | 25% |
| 75.00% to 80% | 2.40% | 20% |
| 80.00% to 85% | 2.80% | 15% |
| 85.00% to 90% | 3.10% | 10% |
| 90.00% to 95% | 4.00% | 5% |
Add 0.20% if your amortisation runs past 25 years. A non-traditional down payment — borrowed, or gifted by someone other than an immediate relative — raises the top band to 4.50%.
The minimum down payment is tiered, not a flat percentage
5% of the first $500,000, then 10% of the portion between $500,000 and $1,500,000. On a $700,000 home that is $45,000 — not $35,000, which is what a flat 5% would suggest. Above $1,500,000 nothing is insurable at all, so you need a full 20%.
What calculators get wrong here
- The sales tax on the premium is cash. The premium is capitalised into your mortgage; the tax on it is not. Ontario charges 8%, Quebec 9%, Saskatchewan 6% — on a typical high-ratio purchase that is well over a thousand dollars of closing money nobody warned you about.
- The minimum down payment is marginal, not a flat rate. Applying 5% to the whole price understates what you need on anything over $500,000.
- Crossing an LTV band is a cliff, unlike land transfer tax. Going from 80.01% to 80.00% loan-to-value drops the premium rate from 2.80% to 2.40% on the entire loan. Finding a little more down payment near a band edge is worth real money.
- Insurance is not available above $1,500,000 at any down payment under 20%, and it never applies at 20% or more down regardless of price.
- Manitoba is unresolved. Some sources say it taxes the premium at 7%; we could not confirm it to the standard we hold everything else to, so this calculator does not apply it. If you are buying in Manitoba, ask your lawyer — we would rather admit a gap than invent a number.
The number this all adds up to
Premium, sales tax, land transfer tax, legal fees — the reason people can't buy isn't the monthly payment, it's the pile of cash needed on day one. Taking over a mortgage that already exists costs closer to $7,500.
See what you can afford →Premium rates from CMHC's published premium schedule for homeowner and small rental loans, current 2026-08-04. Sagen and Canada Guaranty publish materially similar schedules. This is information, not advice — your lender confirms the final premium.