Updated: April 2025  |  bremo.io financial guides

Canada First-Time Tax Filer Guide 2025

Filing your first income tax return in Canada can feel intimidating, but the process is more straightforward than many people expect — especially with modern tax software. Whether you are a student, a young worker, a new immigrant, or someone who has never filed before, this step-by-step guide covers everything you need to get started.

Why You Should File Even If You Earned Little or Nothing

Many first-time filers assume they don't need to file because their income was low. This is a costly mistake. Filing your return — even with zero income — unlocks important benefits:

• GST/HST Credit: Tax-free quarterly payments once you turn 19
• Canada Carbon Rebate: Quarterly payments in eligible provinces
• RRSP contribution room: Starts accumulating once you file
• TFSA contribution room: Accumulates automatically after age 18 with residency
• Benefit eligibility: Many provincial and federal benefits require a filed return

Getting a Social Insurance Number (SIN)

Before filing your first return, you need a Social Insurance Number (SIN). Every Canadian citizen, permanent resident, and temporary resident authorized to work in Canada is eligible for a SIN. Apply at any Service Canada office or online. Keep your SIN private — it is used to identify you with the CRA and financial institutions.

Documents You Need for Your First Return

• Social Insurance Number (SIN)
• T4 slips from all employers you worked for
• T4A slips for scholarships, bursaries, or fellowship income (students)
• T2202 Tuition and Enrolment Certificate from your school (if you attended post-secondary)
• Bank account information (transit, institution, and account numbers) for direct deposit of your refund
• Receipts for any eligible deductions (moving expenses, RRSP contributions, etc.)

Step-by-Step: Filing Your First Return

Step 1: Choose Your Tax Software

For first-time filers with simple situations, free tax software is a great choice. Wealthsimple Tax is completely free for simple returns and uses a straightforward interview format. TurboTax offers a free option for simple returns. H&R Block Free is another option. All of these are CRA-certified for NETFILE filing.

Step 2: Enter Your Personal Information

Start with your name, SIN, date of birth, and province of residence as of December 31 of the tax year you're filing for.

Step 3: Import Your Slips (Auto-Fill)

Most tax software connects to CRA's Auto-fill my return (AFR) service, which pulls your T4s, T3s, T5s, and other slips directly from the CRA database. You authorize the connection using your CRA My Account credentials and slips populate automatically. This is the fastest and most accurate way to enter your information.

Step 4: Claim Your Deductions and Credits

The software guides you through available deductions and credits with interview-style questions. Don't skip any questions — you might qualify for credits you didn't know about.

Step 5: Review and Submit via NETFILE

Review the summary screen showing your refund or balance owing. Set up direct deposit for your refund, then submit your return electronically. You receive an instant confirmation number from the CRA when your return is accepted.

Filing for the First Time: CRA Account Setup

First-time filers cannot use the bank sign-in option for CRA My Account. You must register directly with the CRA using your SIN and information from your first Notice of Assessment (received after your first return is processed). After your first year, you gain full access to My Account.

Common First-Timer Mistakes to Avoid

• Forgetting to report all income — even cash or tips
• Not claiming the tuition credit if you attended a qualifying school
• Missing the filing deadline (April 30) when you owe money
• Not setting up direct deposit — getting a cheque takes much longer
• Filing only federal and forgetting provincial credits