With less than 20% down, your mortgage has to be insured against default, and the premium is usually added to the mortgage. In a few provinces, though, provincial sales tax applies to that premium, and the tax can’t be added to the mortgage: it’s due in cash on closing day, on top of the down payment and the other closing costs. It’s one of the lines on the statement of adjustments that first-time buyers are least likely to expect.
Which provinces charge PST on mortgage insurance
| Province or territory | Sales tax on the premium? | Rate | Tax |
|---|---|---|---|
| Ontario | Yes | 8% | Retail sales tax on insurance premiums |
| Quebec | Yes | 9% | Tax on insurance premiums |
| Saskatchewan | Yes | 6% | PST |
| Manitoba | No (exempt since July 1, 2020) | ||
| British Columbia | No | ||
| Alberta | No | ||
| New Brunswick | No | ||
| Nova Scotia | No | ||
| Prince Edward Island | No | ||
| Newfoundland and Labrador | No | ||
| Northwest Territories, Nunavut and Yukon | No |
GST and HST don’t apply to the premium in any province; only the provincial taxes in the table do. The same tax applies whichever insurer your lender uses: CMHC, Sagen or Canada Guaranty.
How much the tax is
The tax is a percentage of the premium, and the premium is a percentage of the mortgage that depends on your down payment (the full schedule is on the CMHC insurance calculator). On a $500,000 home:
| Down payment | Mortgage | Premium | Ontario (8%) | Quebec (9%) | Saskatchewan (6%) |
|---|---|---|---|---|---|
| 5% | $475,000 | $19,000 | $1,520 | $1,710 | $1,140 |
| 10% | $450,000 | $13,950 | $1,116 | $1,256 | $837 |
| 15% | $425,000 | $11,900 | $952 | $1,071 | $714 |
| 20% or more | No insurance required | $0 | $0 | $0 | $0 |
How it appears on closing day
Your lawyer collects the tax with the other funds due on closing and pays it to the province. In Ontario, on the 5%-down example above:
| Line | Amount |
|---|---|
| Mortgage insurance premium (added to the mortgage, not paid in cash) | $19,000 financed |
| Retail sales tax on the premium, paid in cash | $1,520 |
| Mortgage with the premium added | $494,000 |
| Cash needed for the down payment and the tax on the premium | $26,520 |
Everything else due at closing, from the land transfer tax to the legal fees, comes on top; the closing cost calculator estimates those and adds this tax to the cash due for a purchase in Ontario, Quebec or Saskatchewan.
Reducing the tax
The tax follows the premium, so anything that lowers the premium lowers the tax:
| Down payment on a $500,000 home in Ontario | Ontario tax on the premium | Extra down payment vs 5% | Tax saved |
|---|---|---|---|
| 5% | $1,520 | ||
| 10% | $1,116 | $25,000 | $404 |
| 15% | $952 | $50,000 | $568 |
On its own the tax saving is small next to the extra down payment it takes. The larger effects of a bigger down payment are the lower premium, the smaller mortgage and the interest saved on both. At 20% or more down there’s no premium, so there’s no tax either.
Renewing, switching or refinancing
| Event | Tax charged again? |
|---|---|
| Renewal with the same lender | No, the insurance stays in force |
| Switching lenders at renewal with the same insured loan | No, the insurance carries over |
| Refinancing into a new mortgage that needs new insurance | Yes, on the new premium |
The tax is a one-time charge when the insured mortgage first funds, unless a new mortgage later needs a new premium. Whether an insured mortgage can be refinanced, and the price cap and other conditions for insurance, are covered in CMHC mortgage rules. For the minimum down payment that decides whether you need insurance at all, see the mortgage down payment calculator, and for what default insurance is and how buyers avoid it, what CMHC insurance is.
Sources
The figures and rules on this page come from these sources, last checked against them between September 24, 2026 and October 6, 2026. How we check facts.
- Canada Revenue Agency: GST/HST calculator (and rates)
- CMHC: CMHC Purchase
- CMHC: Home Start
- Government of Ontario: Insurance and Benefits Plans | Retail Sales Tax
- Justice Laws (Canada): Bank Act
- LégisQuébec: Légis Québec