Ontario Tax Brackets 2018 Calculator

This calculator helps you determine your Ontario provincial income tax for 2018 based on your taxable income. Understanding Ontario's tax brackets is essential for proper tax planning and financial management.

How Ontario Tax Brackets Work

Ontario uses a progressive tax system where different income ranges are taxed at different rates. The provincial government collects income tax from residents to fund public services and programs.

In 2018, Ontario had the following tax brackets:

Tax Calculation Formula:

Ontario Tax = (Income × Tax Rate) - Tax Credit

Where Tax Rate is determined by your taxable income bracket.

The tax system includes both provincial and federal taxes. The federal government collects income tax through the Canada Revenue Agency (CRA), while the provincial government collects provincial income tax.

2018 Ontario Tax Brackets

For 2018, Ontario's provincial income tax rates were as follows:

Taxable Income	Tax Rate
$0 - $44,703	5.05%
$44,704 - $89,407	9.15%
$89,408 - $150,000	11.16%
$150,001 - $220,000	12.16%
$220,001+	13.16%

Note that these are provincial tax rates only. The federal tax rates were different in 2018. The total tax owed is the sum of provincial and federal taxes.

How to Use This Calculator

To use this calculator:

Enter your total taxable income for 2018 in the calculator.
Click the "Calculate" button.
The calculator will display your Ontario provincial income tax based on the 2018 tax brackets.
Review the result and compare it with your actual tax payment.

This calculator provides an estimate based on the 2018 tax brackets. For exact tax calculations, consult the Canada Revenue Agency or a tax professional.

Worked Examples

Let's look at two examples to understand how the tax calculation works.

Example 1: $50,000 Income

For someone earning $50,000:

$44,703 × 5.05% = $2,258.72
($50,000 - $44,703) × 9.15% = $4,611.23
Total Ontario tax = $2,258.72 + $4,611.23 = $6,869.95

Example 2: $160,000 Income

For someone earning $160,000:

$44,703 × 5.05% = $2,258.72
($89,407 - $44,703) × 9.15% = $4,106.89
($160,000 - $89,407) × 11.16% = $8,337.39
Total Ontario tax = $2,258.72 + $4,106.89 + $8,337.39 = $14,703.00

Frequently Asked Questions

What is the difference between federal and provincial taxes in Ontario?

Ontario residents pay both federal and provincial income taxes. The federal government collects income tax through the Canada Revenue Agency (CRA), while the provincial government collects provincial income tax. The total tax owed is the sum of both federal and provincial taxes.

How do tax brackets affect my tax payment?

Tax brackets determine the rate at which your income is taxed. Higher income brackets have higher tax rates, which means more of your income is taxed at those rates. Understanding your tax bracket helps you plan your finances and optimize your tax payments.

Are there any tax credits or deductions that affect the calculation?

Yes, there are various tax credits and deductions that can affect your tax calculation. Common credits include the Canada Child Benefit, the Canada Pension Plan, and the Ontario Trillium Benefit. Deductions can include RRSP contributions, medical expenses, and home office expenses. These factors are not included in this basic calculator but should be considered for a complete tax assessment.