2023 Income Tax Calculator Ontario

Use this 2023 Ontario income tax calculator to estimate your provincial tax liability. The calculator applies Ontario's progressive tax rates, deductions, and credits to your income. For exact tax amounts, consult a tax professional or use the Canada Revenue Agency's online tools.

How to Use This Calculator

Enter your total taxable income in the calculator below. The system will automatically apply Ontario's 2023 tax rates and deductions to calculate your estimated provincial tax. You can also adjust for deductions and credits if applicable.

Note: This calculator provides an estimate. Actual tax liability may vary based on your specific situation and federal tax considerations.

2023 Ontario Tax Brackets

Ontario's 2023 tax rates are progressive, meaning higher income brackets pay higher tax rates. The brackets are as follows:

Taxable Income	Tax Rate
$0 - $48,535	5.05%
$48,535.01 - $97,069	9.15%
$97,069.01 - $150,473	11.16%
$150,473.01 - $220,000	12.16%
Over $220,000	13.16%

Formula: Ontario tax = Sum of (bracket income × bracket rate)

Common Deductions and Credits

Several deductions and credits can reduce your Ontario tax liability. Common ones include:

Basic Personal Amount: $12,069 for 2023
Canada Employment Amount: $3,311 for 2023
Ontario Trillium Benefit: Up to $1,000 for low-income individuals
RRSP Contributions: Up to 18% of earned income
Medical Expenses: Deductible if over 3% of income

Important: Deductions reduce taxable income, while credits directly reduce tax owed. Consult the CRA for specific rules.

Worked Examples

Example 1: Single Individual with $50,000 Income

Taxable income after deductions: $50,000 - $12,069 (Basic Personal Amount) - $3,311 (CEA) = $34,620

Tax calculation:

$48,535 × 5.05% = $2,450.38
($34,620 - $48,535) × 9.15% = $0

Total Ontario tax: $2,450.38

Example 2: Individual with $100,000 Income and $5,000 RRSP Contribution

Taxable income after deductions: $100,000 - $12,069 - $3,311 - $5,000 = $80,620

Tax calculation:

$48,535 × 5.05% = $2,450.38
($97,069 - $48,535) × 9.15% = $4,506.26
($80,620 - $97,069) × 11.16% = $0

Total Ontario tax: $6,956.64

Frequently Asked Questions

How is Ontario tax different from federal tax?

Ontario and federal governments each have their own tax rates and deductions. Your total tax liability is the sum of both provincial and federal taxes. This calculator focuses only on Ontario provincial tax.

When should I file my Ontario taxes?

Ontario taxes are typically due by April 30 of the following year. However, you may need to file earlier if you're self-employed or have other tax obligations.

Are there any exemptions for Ontario tax?

Yes, Ontario offers exemptions for certain groups, such as seniors, veterans, and individuals with disabilities. These exemptions can reduce your taxable income.

Can I deduct my mortgage interest?

Yes, you can deduct mortgage interest if you itemize your deductions. The maximum deductible interest is based on your mortgage balance and the prime rate.

What happens if I owe more tax than I have paid?

If you owe more tax than you've paid, you'll need to pay the balance by the tax deadline. The CRA offers payment plans for those who need them.