2018 Income Tax Calculator Ontario

How to Use This Calculator

Using this 2018 Ontario income tax calculator is simple:

1. Enter your total income for the 2018 tax year in the "Total Income" field.
2. Select your filing status (Single, Married, or Separate).
3. Enter any applicable deductions in the "Deductions" field.
4. Click the "Calculate" button to see your tax results.
5. Review the breakdown of your taxable income and final tax amount.

2018 Ontario Tax Brackets

The 2018 Ontario tax rates and brackets are as follows:

Common Deductions

Several deductions can reduce your taxable income in Ontario:

• Canada Pension Plan (CPP) contributions - Up to 5.95% of your pensionable earnings.
• Employment Insurance (EI) premiums - Up to 1.66% of your insurable earnings.
• RRSP contributions - Up to 18% of your earned income.
• Medical expenses - Eligible medical expenses over 3% of your net income.
• Donations - Charitable donations may be eligible for a tax credit.

Enter these deductions in the calculator to get an accurate tax estimate.

Worked Example

Let's calculate the tax for a single filer with $60,000 in income and $5,000 in deductions:

1. Taxable income = $60,000 - $5,000 = $55,000
2. First $44,709 is taxed at 5.05%: $44,709 × 0.0505 = $2,264.25
3. Next $10,291 ($55,000 - $44,709) is taxed at 9.15%: $10,291 × 0.0915 = $940.85
4. Total tax = $2,264.25 + $940.85 = $3,205.10

Using the calculator with these numbers would show a tax amount of $3,205.10.