Starting a new job involves more than showing up on day one. The first few weeks of employment include financial decisions that will affect your taxes, retirement savings, and insurance coverage for years. Do not let them slip by without attention.
On your first day, your employer will ask you to complete a TD1 Personal Tax Credits Return. There are two versions: federal TD1 and provincial TD1. These forms tell your employer how much tax to withhold from each paycheque.
Common credits to claim:
Claiming more credits means less tax withheld each paycheque. But claiming credits you are not entitled to results in owing taxes at filing time.
Most employers offer group benefits (health, dental, vision, life insurance, disability insurance) with a waiting period of 0–3 months. The most important action: enroll as soon as you are eligible. Missing the enrollment window often means waiting until the next open enrollment or providing medical evidence of insurability.
Review your benefits package carefully:
If your employer offers a pension plan, understand what type:
Starting a new higher-paying job may significantly increase your RRSP contribution room for the following year. RRSP room is 18% of prior year earned income, minus pension adjustments. If you joined a DB or DC pension, your pension adjustment reduces available RRSP room. Check CRA My Account for your exact available contribution room before making personal RRSP contributions.
Your TFSA contribution room is not affected by employment income or pension plans. With a higher income at a new job, TFSA contributions become more valuable — higher income means a higher marginal tax rate on investment income, making tax-free TFSA growth more impactful.
If your new job pays significantly more than your previous one — especially if you change jobs mid-year — you may owe taxes at filing time because your employer withheld based on annual projections that didn't account for the lower earlier income. Ask payroll to withhold extra tax by submitting a revised TD1 or a letter requesting additional withholding.
Set up direct deposit with your employer on day one — it is faster and more reliable than cheques. Provide your banking information (void cheque or direct deposit form from your bank) to HR or payroll.
If you or your partner already have group benefits from another employer, coordinate your coverage. Many plans allow you to submit claims to one plan and then the other for reimbursement of remaining amounts. Understand which plan is primary (your own plan) and secondary (your partner's plan) for maximum reimbursement.
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