Ontario Income Tax Brackets 2018 Calculator

Calculate your Ontario income tax for 2018 using this official tax bracket calculator. Get step-by-step results and understand how much tax you owe.

How Ontario Income Tax Works in 2018

Ontario's income tax system for 2018 was based on progressive tax brackets, meaning higher income levels were taxed at higher rates. The province also had a basic personal amount (BPA) that reduced your taxable income.

Key Tax Concepts

Progressive tax rates: Different rates apply to different income ranges
Basic Personal Amount (BPA): $11,474 in 2018
Tax credits: Reduce your tax liability
Tax deductions: Reduce your taxable income

The Ontario government provides several tax credits to help residents, including the Ontario Child Benefit, Ontario Trillium Benefit, and the Ontario Disability Support Program.

2018 Ontario Tax Brackets

The 2018 Ontario tax brackets were as follows:

Taxable Income	Tax Rate
$0 - $44,700	5.05%
$44,701 - $89,400	9.15%
$89,401 - $150,000	11.16%
$150,001 - $220,000	12.16%
Over $220,000	13.16%

Note: These brackets apply to individuals. Different brackets apply to corporations and trusts.

How to Use This Calculator

Enter your total income for 2018 in the calculator
Select your filing status (Single, Married, etc.)
Click "Calculate" to see your estimated tax
Review the breakdown of your tax calculation

The calculator uses the official 2018 Ontario tax brackets and applies the Basic Personal Amount (BPA) to your taxable income.

Worked Examples

Example 1: Single filer with $50,000 income

Taxable income: $50,000 - $11,474 (BPA) = $38,526

Tax calculation:

$44,700 × 5.05% = $2,257.35
($38,526 - $44,700) × 9.15% = $418.96
Total tax: $2,257.35 + $418.96 = $2,676.31

Example 2: Married couple with $120,000 combined income

Taxable income: $120,000 - $22,948 (BPA for married) = $97,052

Tax calculation:

$44,700 × 5.05% = $2,257.35
$44,700 × 9.15% = $4,071.65
($97,052 - $89,400) × 11.16% = $696.69
Total tax: $2,257.35 + $4,071.65 + $696.69 = $7,025.69

Frequently Asked Questions

What was the Basic Personal Amount (BPA) in 2018?: The BPA was $11,474 for single filers and $22,948 for married couples in 2018.
Did Ontario have a provincial sales tax (PST) in 2018?: Yes, Ontario had a PST rate of 8% in 2018, which applied to most goods and services.
Were there any tax credits available in 2018?: Yes, Ontario offered several tax credits including the Ontario Child Benefit and Ontario Trillium Benefit.
How often were Ontario tax brackets updated?: Ontario tax brackets were typically updated annually to reflect changes in the economy and government policy.
Were there any tax exemptions for certain types of income?: Yes, certain types of income such as social assistance payments and certain types of government benefits were tax-exempt.