Tax Deduction Calculator Ontario 2017
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Reviewed by Calculator Editorial Team
Use this tax deduction calculator to determine how much you can deduct from your Ontario taxable income for the 2017 tax year. The calculator provides an estimate of your potential tax savings based on your income and eligible deductions.
How to Use This Calculator
To calculate your Ontario tax deductions for 2017:
- Enter your total taxable income for the year.
- Select your filing status (Single, Married, or Other).
- Enter the total amount of eligible deductions you qualify for.
- Click "Calculate" to see your estimated tax savings.
The calculator will show you how much your deductions reduce your taxable income and the corresponding tax savings.
Formula Used
The tax deduction calculator uses the following formula to calculate your tax savings:
Tax Savings Formula
Tax Savings = (Taxable Income - Deductions) × Tax Rate - (Taxable Income × Tax Rate)
Where:
- Taxable Income = Your total income minus non-taxable amounts
- Deductions = Total eligible deductions you qualify for
- Tax Rate = Ontario provincial tax rate for your filing status
The Ontario provincial tax rates for 2017 were:
- Single filers: 5.05% on the first $42,961 and 9.15% on amounts over $42,961
- Married filers: 5.05% on the first $85,922 and 9.15% on amounts over $85,922
Worked Examples
Example 1: Single Filer
John is a single filer with a taxable income of $50,000 and qualifies for $3,000 in deductions.
Calculation:
- Taxable Income = $50,000 - $3,000 = $47,000
- Tax on original income = $50,000 × 9.15% = $4,575
- Tax after deductions = $47,000 × 9.15% = $4,303.50
- Tax Savings = $4,575 - $4,303.50 = $271.50
John's tax savings from deductions would be approximately $271.50.
Example 2: Married Filer
Sarah and David are married filers with a combined taxable income of $90,000 and qualify for $5,000 in deductions.
Calculation:
- Taxable Income = $90,000 - $5,000 = $85,000
- Tax on original income = $90,000 × 9.15% = $8,235
- Tax after deductions = $85,000 × 9.15% = $7,782.50
- Tax Savings = $8,235 - $7,782.50 = $452.50
Sarah and David's tax savings from deductions would be approximately $452.50.
Frequently Asked Questions
What types of deductions are eligible for the Ontario tax deduction calculator?
Eligible deductions include charitable donations, medical expenses, tuition fees, and other approved deductions as per the Canada Revenue Agency (CRA) guidelines for the 2017 tax year.
Is the Ontario tax deduction calculator accurate for all filing statuses?
The calculator provides an estimate based on the 2017 Ontario provincial tax rates. For exact figures, consult a tax professional or use official CRA tools.
Can I use this calculator for the 2018 tax year?
No, this calculator is specifically designed for the 2017 tax year. Tax rates and deduction rules change annually, so you would need a separate calculator for 2018.
What if my deductions exceed my taxable income?
The calculator will show a negative tax savings amount, indicating that your deductions exceed your taxable income. This means you would receive a refund rather than a tax savings.