2021 Income Tax Calculator Ontario

Use this 2021 Ontario income tax calculator to determine your provincial tax liability. The calculator follows the 2021 tax rates and brackets established by the Ontario government. This tool provides an estimate of your provincial tax based on your taxable income.

How to Use This Calculator

To calculate your 2021 Ontario income tax:

Enter your total taxable income for the year in the "Taxable Income" field.
Select your filing status from the dropdown menu.
Click the "Calculate" button to see your estimated provincial tax.

The calculator will display your estimated provincial tax based on the 2021 Ontario tax rates. Keep in mind that this is an estimate and your actual tax may vary based on deductions, credits, and other factors.

2021 Ontario Tax Brackets

The 2021 Ontario tax rates and brackets are as follows:

Taxable Income	Tax Rate
$0 - $45,142	5.05%
$45,142.01 - $90,287	9.15%
$90,287.01 - $150,000	11.16%
$150,000.01 - $220,000	12.16%
Over $220,000	13.16%

Note: These rates are for Ontario provincial tax only. Federal tax is calculated separately.

How the Tax is Calculated

The Ontario provincial tax is calculated using progressive tax brackets. The formula used is:

Provincial Tax = Sum of (Taxable Income × Rate for each bracket)

For example, if your taxable income is $50,000:

$45,142 × 5.05% = $2,264.33
($50,000 - $45,142) × 9.15% = $425.67
Total Provincial Tax = $2,264.33 + $425.67 = $2,690.00

Worked Example

Let's calculate the provincial tax for a single filer with a taxable income of $120,000.

$45,142 × 5.05% = $2,264.33
($90,287 - $45,142) × 9.15% = $4,185.67
($120,000 - $90,287) × 11.16% = $3,549.00
Total Provincial Tax = $2,264.33 + $4,185.67 + $3,549.00 = $9,999.00

Therefore, the estimated provincial tax for this example is $9,999.00.

Frequently Asked Questions

Is this calculator official? +

This calculator provides an estimate based on the 2021 Ontario tax rates. For official tax information, consult the Canada Revenue Agency (CRA) or the Ontario government.

Does this calculator include federal tax? +

No, this calculator only calculates the Ontario provincial tax. Federal tax is calculated separately using the federal tax brackets.

When were the 2021 tax rates updated? +

The 2021 tax rates were updated in January 2021 to reflect the changes made by the Ontario government. This calculator uses the most current 2021 rates.