Taxes Calculator Ontario 2018
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Reviewed by Calculator Editorial Team
Calculate your Ontario provincial income tax for the 2018 tax year using this free online calculator. This tool provides an estimate of your tax liability based on your taxable income and Ontario tax brackets for 2018.
How to Use This Calculator
To calculate your Ontario income tax for 2018:
- Enter your total taxable income for the year in the "Taxable Income" field.
- Select your filing status from the dropdown menu (Single, Married, or Other).
- Click the "Calculate" button to see your estimated tax liability.
The calculator will display your estimated provincial tax payable, which includes both federal and provincial tax components. Note that this is an estimate and your actual tax liability may vary based on deductions, credits, and other factors.
Ontario Tax Brackets 2018
For the 2018 tax year, Ontario's provincial tax rates were as follows:
| Taxable Income | Provincial 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% |
| Over $220,000 | 13.16% |
Note: These are the provincial tax rates. The federal tax rates for 2018 were different and would be added to the provincial tax to determine your total tax liability.
Calculation Method
The Ontario income tax is calculated using a progressive tax system with different rates for different income brackets. The formula used is:
Provincial Tax = Sum of (Income in Bracket × Bracket Rate)
Where each bracket is calculated as:
- For income between $0 and $44,703: (Income × 5.05%)
- For income between $44,704 and $89,407: ($44,703 × 5.05%) + ((Income - $44,703) × 9.15%)
- For income between $89,408 and $150,000: ($44,703 × 5.05%) + ($44,704 × 9.15%) + ((Income - $89,407) × 11.16%)
- For income between $150,001 and $220,000: ($44,703 × 5.05%) + ($44,704 × 9.15%) + ($60,593 × 11.16%) + ((Income - $150,000) × 12.16%)
- For income over $220,000: ($44,703 × 5.05%) + ($44,704 × 9.15%) + ($60,593 × 11.16%) + ($70,000 × 12.16%) + ((Income - $220,000) × 13.16%)
This calculator uses these exact formulas to compute your provincial tax liability. The result is an estimate of your Ontario provincial tax payable for the 2018 tax year.
Worked Example
Let's calculate the provincial tax for a single filer with a taxable income of $75,000.
- The first $44,703 is taxed at 5.05%: $44,703 × 0.0505 = $2,268.28
- The next $30,297 ($75,000 - $44,703) is taxed at 9.15%: $30,297 × 0.0915 = $2,774.46
- Total provincial tax: $2,268.28 + $2,774.46 = $5,042.74
Therefore, a single filer with $75,000 in taxable income would owe approximately $5,042.74 in Ontario provincial income tax for 2018.
Frequently Asked Questions
What is the difference between federal and provincial taxes in Ontario?
In Ontario, you pay both federal and provincial income taxes. The provincial tax rates are applied to your Ontario taxable income, while the federal tax rates are applied to your total taxable income. The combined rates create the effective tax rates you see on your tax return.
How do I know if I qualify for any tax credits or deductions?
Tax credits and deductions can significantly reduce your tax liability. Common credits include the Canada Child Benefit, Canada Pension Plan contributions, and the Ontario Trillium Benefit. Deductions might include RRSP contributions, medical expenses, and tuition fees. To qualify, you typically need to meet specific eligibility criteria and provide supporting documentation.
When should I file my Ontario taxes?
In Ontario, the deadline for filing your personal income tax return is generally April 30 of the year following the tax year. For example, taxes for the 2018 tax year should be filed by April 30, 2019. However, it's a good idea to file as soon as possible to avoid late fees and potential interest charges.
What happens if I don't file my Ontario taxes?
If you don't file your Ontario taxes on time, you may be subject to penalties and interest charges. The Canada Revenue Agency (CRA) may also assess additional taxes, including interest and penalties, on any unpaid tax. It's important to file your return even if you owe no tax to avoid these consequences.