Ontario Revenue Tax Calculator

Calculate your Ontario provincial revenue tax with this free online calculator. Understand how much tax you owe based on your income and deductions.

How Ontario Revenue Tax Works

Ontario's provincial revenue tax is calculated based on your taxable income after federal deductions. The Ontario government uses a progressive tax system with different tax rates for different income brackets.

Tax Brackets for 2023

The current Ontario tax brackets for 2023 are:

5.05% on the first $49,208 of taxable income
9.15% on the next $49,208 ($49,209 to $98,416)
11.16% on the next $59,668 ($98,417 to $158,085)
12.16% on the next $65,784 ($158,086 to $223,870)
13.16% on amounts over $223,870

Note: These rates are subject to change each year. Always verify with the latest government publications.

Taxable Income Calculation

Your taxable income is calculated by subtracting federal deductions from your total income. The Ontario government provides standard deductions that can reduce your taxable income.

How to Use This Calculator

Using this Ontario Revenue Tax Calculator is simple:

Enter your total income for the year
Enter any federal deductions you've claimed
Click "Calculate" to see your Ontario provincial tax
Review the breakdown of your tax calculation

Formula: Ontario Tax = (Total Income - Federal Deductions) × Ontario Tax Rate

Formula and Assumptions

The calculator uses the following formula to determine your Ontario provincial revenue tax:

Ontario Tax = (Total Income - Federal Deductions) × Ontario Tax Rate

The Ontario tax rate is determined based on your taxable income (Total Income - Federal Deductions) using the progressive tax brackets shown above.

Assumptions

Tax rates are based on 2023 figures
No additional provincial deductions are applied
Income is reported as a single individual

Worked Examples

Example 1: Low Income

For someone with $50,000 total income and $10,000 in federal deductions:

Taxable Income = $50,000 - $10,000 = $40,000
Ontario Tax = $40,000 × 5.05% = $2,020

Example 2: Medium Income

For someone with $100,000 total income and $20,000 in federal deductions:

Taxable Income = $100,000 - $20,000 = $80,000
First $49,208 × 5.05% = $2,479.54
Next $30,792 × 9.15% = $2,825.94
Total Ontario Tax = $2,479.54 + $2,825.94 = $5,305.48

Frequently Asked Questions

How often should I calculate my Ontario tax?: You should calculate your Ontario tax whenever your income changes significantly or when tax rates are updated annually.
Are there any additional deductions I can claim?: Yes, Ontario offers additional deductions for things like medical expenses, donations, and home office expenses. These can reduce your taxable income further.
What happens if I don't pay my Ontario tax on time?: If you don't pay your Ontario tax on time, you may be subject to penalties and interest charges. It's important to file and pay your taxes by the deadline.
Can I get help with my Ontario tax return?: Yes, you can use this calculator to help prepare your tax return, or you can hire a tax professional for assistance.