T4 Calculator Ontario

A T4 slip is a document issued by an employer to an employee in Canada, summarizing their income and deductions for the tax year. This calculator helps you understand your Ontario T4 information, including gross income, deductions, and net pay.

What is a T4 slip?

A T4 slip is a key document in Canada's tax system. It provides a summary of your employment income for the year, including:

Your employee number
Your Social Insurance Number (SIN)
Your employer's name and business number
Your total earnings for the year
Deductions made by your employer
Your net income after deductions

In Ontario, employers must provide T4 slips to employees by February 28 of the following year. The information on your T4 is crucial for completing your personal income tax return.

How to use this calculator

This calculator helps you understand your Ontario T4 information by showing how your gross income, deductions, and net pay relate to each other. Here's how to use it:

Enter your total gross income from your T4 slip
Enter any deductions listed on your T4
Click "Calculate" to see your net pay
Review the breakdown of your income

Note: This calculator provides an estimate. For exact tax calculations, consult a tax professional or use the Canada Revenue Agency's official tools.

Formula used

The net pay calculation is straightforward:

Net Pay = Gross Income - Deductions

Where:

Gross Income is your total earnings before deductions
Deductions include any amounts withheld by your employer for taxes, pension plans, or other purposes

Worked example

Let's look at an example:

If your T4 shows:

Gross Income: $50,000
Deductions: $5,000

The calculation would be:

Net Pay = $50,000 - $5,000 = $45,000

This means your net pay after deductions is $45,000.

Frequently asked questions

When do I receive my T4 slip?: Employers in Ontario must provide T4 slips to employees by February 28 of the following year.
What if I don't receive my T4?: If you don't receive your T4 by the deadline, contact your employer immediately. You can also check with the Canada Revenue Agency for assistance.
What if my T4 shows errors?: If you believe there are errors on your T4, contact your employer to correct them. You can also report discrepancies to the Canada Revenue Agency.
Do I need to keep my T4?: Yes, you should keep your T4 slip for at least six years, as it's required for tax filing and audits.
What if I have multiple jobs?: You'll receive a separate T4 from each employer. Combine the information from all T4 slips when filing your personal income tax return.