Taxes on Your HSA Invoice: RST, GST/HST, and Premium Fee

A quick guide to the RST, GST/HST, and premium fee lines on a Frontier HSA invoice.

Benji VisserBenji Visser·June 15, 2026·5 min read

Some HSA invoices show more than the claim and the admin fee.

In Ontario, you may also see RST, GST/HST, and a premium fee.

For Frontier invoices, the province is based on the corporation's address in the account, not the employee's personal address.

Here is what each line means.

The invoice lines

Invoice line What it means
Claim amount The eligible medical expense being reimbursed to the employee
Admin fee The provider fee for processing the claim
RST Ontario's 8% Retail Sales Tax, commonly charged on the eligible claim amount
Premium fee Ontario's 2% insurance premium tax, usually shown on the invoice as premium fee
GST/HST Sales tax on the provider's admin fee

Example: $1,000 Ontario HSA claim

Assume an Ontario corporation has a $1,000 eligible claim and the HSA provider charges an 8% admin fee.

Line item Calculation Amount
Claim reimbursement Eligible claim $1,000.00
Admin fee 8% of $1,000 $80.00
RST 8% of $1,000 claim $80.00
Premium fee 2% of claim plus admin fee $21.60
HST on admin fee 13% of $80 admin fee $10.40
Total employer invoice $1,192.00

The employee receives $1,000. The employer pays $1,192.

The extra $192 is the admin fee plus the taxes on the Ontario HSA invoice.

Example: $1,000 B.C. HSA claim

Now assume a B.C. corporation has the same $1,000 eligible claim and the HSA provider charges the same 8% admin fee.

Line item Calculation Amount
Claim reimbursement Eligible claim $1,000.00
Admin fee 8% of $1,000 $80.00
Claim taxes Not charged $0.00
GST on admin fee 5% of $80 admin fee $4.00
Total employer invoice $1,084.00

The employee receives $1,000. The employer pays $1,084.

In B.C., there is no tax on the claim amount. The only tax in this example is GST on the provider's admin fee.

Frontier province comparison: $1,000 HSA claim

This chart assumes a $1,000 claim and an 8% admin fee. It uses Frontier-supported provinces, and the province is the corporation province on the Frontier account.

Corporation province Claim amount Admin fee RST on claim Premium fee GST/HST on admin fee Total taxes Total invoice
B.C. $1,000.00 $80.00 $0.00 $0.00 $4.00 $4.00 $1,084.00
Alberta $1,000.00 $80.00 $0.00 $0.00 $4.00 $4.00 $1,084.00
Saskatchewan $1,000.00 $80.00 $0.00 $0.00 $4.00 $4.00 $1,084.00
Manitoba $1,000.00 $80.00 $0.00 $0.00 $4.00 $4.00 $1,084.00
Ontario $1,000.00 $80.00 $80.00 $21.60 $10.40 $112.00 $1,192.00
New Brunswick $1,000.00 $80.00 $0.00 $0.00 $12.00 $12.00 $1,092.00
Nova Scotia $1,000.00 $80.00 $0.00 $0.00 $11.20 $11.20 $1,091.20
P.E.I. $1,000.00 $80.00 $0.00 $0.00 $12.00 $12.00 $1,092.00
Newfoundland and Labrador $1,000.00 $80.00 $0.00 $0.00 $12.00 $12.00 $1,092.00
Yukon $1,000.00 $80.00 $0.00 $0.00 $4.00 $4.00 $1,084.00

Why Ontario invoices show these taxes

Ontario applies RST to taxable insurance and benefit-plan amounts. For many HSA invoices, that means RST appears on the claim amount.

Ontario also has a 2% insurance premium tax. On Frontier invoices, this appears as the premium fee. It is commonly calculated on the claim amount plus the admin fee.

GST/HST is separate. It applies to the provider's taxable service fee. In the example above, that is the $80 admin fee.

What about outside Ontario?

Outside Ontario, there is usually no tax on the claim amount.

The Ontario claim taxes are specific to Ontario. The admin fee can still have GST or HST depending on the province.

Sources

Simplify Your Business Health Benefits

Get Started