Short answer
For insured Ontario mortgages, the CMHC premium may be added to the mortgage, but Ontario PST on that premium is normally a cash closing cost. Buyers who only look at mortgage payment estimates can miss this closing-day cash requirement.
What does this page answer?
Estimate CMHC mortgage insurance premium and Ontario PST cash due at closing for insured Ontario mortgages.
- Minimum down payment and insured threshold are checked.
- Premium rate tiers are estimated by loan-to-value.
- Ontario PST on the premium is added to the cash-to-close ledger.
Why are the premium and PST separated?
The premium affects the mortgage balance when it is financed. The PST affects cash to close because it is not typically financed into the mortgage in Ontario.
Which inputs change the estimate?
Purchase price, down payment, insured eligibility, and loan-to-value tier drive the premium estimate. The calculator keeps the premium and the Ontario PST line visible separately.
Example CMHC PST estimate
| Purchase price | $900,000 |
|---|---|
| Down payment | $90,000 |
| Estimated premium | $25,110 |
| Ontario PST cash item | $2,009 |
Frequently asked
Is CMHC insurance PST financed into the mortgage?
The insurance premium is commonly added to the mortgage, but Ontario PST on that premium is usually due in cash at closing.
Does every buyer pay CMHC insurance?
No. It depends on purchase price, down payment, and whether the mortgage is insured.