Ontario Health Premium Calculator Canada

What the Ontario Health Premium calculator does

Enter your taxable income and the calculator returns the annual Ontario Health Premium, its monthly equivalent and the effective rate on your income, following the stepped schedule Ontario uses.

The premium is easy to overlook because it is bundled into income tax, yet it reaches $900 a year for higher earners. Seeing it on its own makes Ontario take-home pay easier to understand and budget for.

How the premium is structured

The premium is zero up to $20,000 of taxable income. Above that it climbs across a narrow band of income, holds flat across a wider plateau, then climbs again. The plateaus are $300, $450, $600, $750 and the $900 maximum. Within the ramps the premium rises by 6% of the income inside the ramp below $48,000 and by 25% above it, so a small change in income near a step can change the premium while the same change on a plateau does not.

How the calculation works

• It finds the band your taxable income falls into.
• On a plateau, it returns that band’s flat premium.
• On a ramp, it adds the ramp rate (6% below $48,000, 25% above) times the income above the ramp’s start to the band’s base amount, up to the next plateau.
• It never exceeds the $900 maximum.

Worked examples

At $25,000 of taxable income you are at the top of the first ramp: 6% of the $5,000 above $20,000 is $300, about $25 a month. The premium then stays at $300 until the next ramp.

At $50,000 the ramp starting at $48,000 would add 25% of the $2,000 above it, $500, to the $450 base, but the premium cannot pass the $600 plateau. The premium is $600, $50 a month, an effective rate of 1.2%.

At $90,000 you are on the $750 plateau, which runs from the end of the ramp at $72,600 to the start of the last ramp at $200,000. Two people with quite different incomes can pay the same premium.

How the premium is paid

The premium is calculated on your Ontario return and added to the income tax you owe. Employers usually include it in payroll withholding, so it is spread across your pay. If you have several sources of income or your deductions change, the amount withheld may not match the premium your final taxable income produces, and the difference is settled on your return. The TD1 forms you give an employer affect how much is withheld.

Taxable income, not gross income

The premium is based on taxable income: what is left after deductions such as RRSP contributions. Two people with the same salary can have different taxable incomes and different premiums, and a contribution can move you to a lower step. Your most recent notice of assessment shows the figure to use.

Who pays and how Ontario compares

The premium applies to Ontario residents, with residency generally judged on 31 December of the tax year. Paying it is not what entitles you to OHIP, and paying nothing does not remove your coverage; it is a revenue measure attached to the income tax system.

Other provinces fund health care differently. Several that once charged monthly health premiums have dropped them, and Quebec runs its own health contribution through its provincial tax system, so this schedule applies to Ontario only.

When to use this tool

• Estimating the premium for the year.
• Checking a figure on a payslip or tax return.
• Seeing why a small income change did or did not move your premium.
• Budgeting Ontario take-home pay more precisely.

Recalculate whenever your income or deductions change, and treat the annual premium as a fixed line in your budget.

This is general information only and not financial advice.

About This Tool: Ontario Health Premium

Ontario health premium: use this tool to get an instant, accurate estimate. The figures follow official guidance and every rate and threshold is kept up to date for 2026. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.