Your employer doesn't guess at how much tax to take from your paycheck. They use a specific CRA formula based on your tax bracket, provincial residence, marital status, and dependent claims you've declared on your TD1 form. The calculation starts with your gross pay, then applies federal and provincial tax rates for your income range, subtracts eligible non-refundable tax credits you've claimed, and deducts mandatory CPP and EI contributions. The result is the tax withheld from each payment, which your employer remits to the Canada Revenue Agency on your behalf. The foundation of payroll tax withholding is the TD1 form (federal) and its provincial equivalents (like the ON428 in Ontario). When you start a job or your personal situation changes, you complete this form to tell your employer about: - Your marital status - Number of dependent children - Eligible dependent claims - Disability status - Age (65+) - Other eligible credits you claim Your employer uses this information to adjust your tax withholding rate. If you claim dependents or credits, your withholding goes down because you have non-refundable tax credits that reduce your tax bill.
A TD1 form is a Canada Revenue Agency form that tells your employer about your personal tax situation, including your marital status, dependent children, and eligible tax credits. Your employer uses this information to calculate how much tax to withhold from your paycheque. If you don't fill it out or update it when your situation changes, your employer will withhold tax at a higher rate, which may result in a smaller paycheque.
Yes. If you're having too much tax withheld, you can submit a new TD1 form to your employer to reduce withholding. If you're having too little withheld (for example, because you work multiple jobs), you can request your employer increase withholding. Your employer can also deduct taxes based on CRA authorization if you request it through a T1213 form.
You get a refund when your employer withholds more tax than you actually owe for the year. This often happens if you claim dependents on your TD1, have tax credits you didn't report, or earn less income than your employer assumed. Filing your tax return lets CRA calculate your exact tax owing and refund any overpayment.
Your employer remits the tax withheld to the Canada Revenue Agency on your behalf according to CRA deadlines (usually monthly or bi-weekly). This money is credited toward your annual tax bill. At year-end, your T4 slip shows all the tax withheld, which CRA uses to calculate whether you're owed a refund or owe additional tax.
Your provincial tax withholding depends on your province of residence on December 31st of the tax year, not where your job is located. If you move provinces mid-year, you should update your TD1 form with your new province to ensure your employer withholds the correct provincial tax rate.