How to File Your Taxes for the First Time in Canada: A Step-by-Step Guide

Table of Contents

• Why Filing Taxes Matters Even If You Didn’t Earn Much
• What You Need Before You Start
• Understanding Your Tax Slips
• Choosing How to File
• How to File Step by Step
• Common Deductions and Credits First-Time Filers Miss
• What Happens After You File
• Key Deadlines to Know
• FAQs

Tax season hits and suddenly everyone around you seems to have it figured out. You’re staring at a T4 slip wondering what half the boxes mean. Do you owe money? Are you getting a refund? Do you even need to file?

All normal questions. The process is more straightforward than it looks - you just need to know what you’re actually dealing with.

This guide walks you through filing your Canadian taxes for the first time, step by step, with no assumed knowledge.

Why Filing Taxes Matters Even If You Didn’t Earn Much {#why-filing-taxes-matters}

A lot of first-time filers assume that if they didn’t earn much, there’s no point. That’s a costly assumption.

Filing is how you access benefits you’re entitled to. The GST/HST credit, the Canada Carbon Rebate (formerly the Climate Action Incentive), and various provincial credits all require a filed return on record. The Canada Revenue Agency - the CRA - can’t send you money it doesn’t know you qualify for.

There’s also your TFSA (Tax-Free Savings Account) to think about. Contribution room starts accumulating at age 18, and having a filed return keeps your CRA account accurate. If you have student loans through the NSLSC (National Student Loans Service Centre), your repayment assistance eligibility is based on your filed income too.

The short version: even a $0 return is worth filing.

What You Need Before You Start {#what-you-need-before-you-start}

Pull these together before you open any software:

• Social Insurance Number (SIN) - required to file
• Your tax slips - T4 (employment income), T4A (scholarships, bursaries, or self-employment), T5 (investment income), T2202 (tuition), and anything else that applies to you
• Last year’s Notice of Assessment - only if you’ve filed before; if this is genuinely your first time, you won’t have one
• CRA My Account login - you can file without it, but it’s worth setting up
• Your bank account details - for direct deposit of any refund

Most slips arrive by the end of February. Don’t file before you have all of them, or you’ll likely end up filing an amendment.

Understanding Your Tax Slips {#understanding-your-tax-slips}

The slip you’ll see most often is the T4, issued by your employer. Box 14 is your employment income. Box 22 is the income tax already withheld from your paycheques. Box 16 is your CPP (Canada Pension Plan) contributions. Box 18 is your EI (Employment Insurance) premiums.

If you received a scholarship or bursary, you’ll get a T4A instead. For most full-time students, scholarship income is exempt from tax - but you still need to report it.

The T2202 is your tuition tax certificate from your school. It shows how much you paid in eligible tuition fees, which can reduce what you owe or be carried forward to a future year.

Worth knowing: your employer or school is required to issue these slips by the last day of February. If you haven’t received one by early March, contact them directly.

Choosing How to File {#choosing-how-to-file}

The right option depends on how simple your situation is.

NETFILE-certified software is the standard route for most Canadians. You complete your return in the software and submit it electronically to the CRA. Several options are free for simple returns - Wealthsimple Tax is a popular free choice in Canada, and TurboTax and H&R Block both have free tiers for straightforward situations.

NETFILE itself is just the CRA’s electronic filing system. When you submit through certified software, you’re using it. The CRA typically confirms receipt within minutes.

The Community Volunteer Income Tax Program (CVITP) is worth knowing about if your income is modest and your situation is simple. Trained volunteers file your return for free. You can find a clinic through the CRA website.

Paper filing is still an option, but it’s genuinely slower. The CRA processes paper returns in weeks rather than days, and your refund takes longer to arrive.

The downside of free software: if your situation gets complicated - self-employment income, rental income, foreign assets - you may hit limitations. For a first-time filer with a T4 and maybe a T2202, free software works fine.

How to File Step by Step {#how-to-file-step-by-step}

Step 1: Register for CRA My Account

Go to canada.ca and set up a CRA My Account if you haven’t already. It lets you view your slips directly, check your TFSA room, and track your refund. You’ll need your SIN and some basic identity information to register.

Step 2: Gather all your slips

Don’t start until you have everything. Log into CRA My Account after mid-February and check the “Tax Information Slips” section. Many slips are uploaded there directly by your employer or school, which saves you from hunting them down.

Step 3: Open your chosen software and create a return

Most NETFILE-certified software walks you through the process with interview-style questions. Answer based on your actual situation. Don’t guess.

Step 4: Enter your income

Input each slip as prompted. For a T4, you’ll enter the amounts from the relevant boxes. For a T2202, you’ll enter your tuition amount. The software handles the math from there.

Step 5: Claim your deductions and credits

This is where first-timers most often leave money on the table. The next section covers what to look for.

Step 6: Review and submit

Before you hit submit, check the summary screen. Make sure your refund or balance owing looks reasonable given what you earned and what was withheld. If something looks off, go back and check your entries.

Once you submit via NETFILE, you’ll get a confirmation number. Keep it.

Common Deductions and Credits First-Time Filers Miss {#common-deductions-and-credits}

Tuition tax credit: If you paid tuition at a qualifying post-secondary institution, the amount on your T2202 can reduce your federal tax owing. No tax owing this year? You can carry the unused amount forward or transfer part of it to a parent or grandparent.

Moving expenses: If you moved at least 40 kilometres closer to a new job or school, some moving costs are deductible. Keep your receipts.

RRSP contributions: An RRSP (Registered Retirement Savings Plan) contribution made in the first 60 days of the calendar year can be applied to the previous tax year. Contributed before March 1, 2026? It counts toward your 2025 return.

Union or professional dues: If your employer deducted these from your paycheque, they’re deductible. Check Box 44 on your T4.

Interest paid on student loans: This one’s worth flagging - the federal government eliminated this credit for 2023 onward. Don’t spend time looking for it.

Quick tip: The CRA’s Auto-fill My Return feature, available through NETFILE-certified software, pulls your slips directly from CRA My Account. It cuts down on data entry errors and makes sure you don’t miss anything.

What Happens After You File {#what-happens-after-you-file}

If you’re getting a refund and have direct deposit set up, it typically arrives within two weeks of filing electronically. Paper returns take longer - often six to eight weeks.

The CRA will send you a Notice of Assessment (NOA) once your return is processed. It confirms what the CRA calculated and shows your RRSP contribution room for the following year. Keep it. You’ll need it for things like mortgage applications or confirming your TFSA room.

If you owe money, it’s due by April 30. Interest starts accruing on any balance after that date, so pay on time even if you file late.

The catch: file late with a balance owing and the CRA charges a penalty of 5% of that balance, plus 1% per month for up to 12 months. If you don’t owe anything, there’s no penalty for filing late - but you’ll delay your refund and any benefits tied to your return.

Key Deadlines to Know {#key-deadlines-to-know}

• April 30: Filing deadline for most Canadians, and the payment deadline if you owe taxes
• June 15: Filing deadline if you or your spouse are self-employed - but any balance owing is still due April 30
• Last day of February: Deadline for employers and institutions to issue your tax slips

If April 30 falls on a weekend, the deadline shifts to the next business day. Check the CRA website each year to confirm the exact date.

If you’re still getting your head around how money works, the Finnav blog covers things like how to manage your money and budgeting apps worth using in Canada - useful reading once tax season is behind you.

Want a structured way to build on this? Finnav breaks down money topics like taxes, TFSAs, and budgeting into short daily missions built for Canadian students and new grads. Download the app at finnav.xyz or find it on the App Store.

FAQs {#faqs}

Do I have to file taxes in Canada if I’m a student? You’re not legally required to file if you have no income, but you should anyway. Filing is how you access the GST/HST credit, provincial benefits, and other credits you may qualify for. It also establishes your tax history, which matters later for things like RRSP room and mortgage applications.

What is the deadline to file taxes in Canada for 2026? The deadline to file your 2025 tax return is April 30, 2026, for most Canadians. If you or your spouse are self-employed, your filing deadline is June 15, 2026 - but any taxes owed are still due April 30.

What happens if I miss the tax filing deadline in Canada? If you owe money and file late, the CRA charges a penalty of 5% of the balance owing, plus 1% per month for up to 12 months. If you don’t owe any taxes, there’s no penalty for filing late - but you’ll delay your refund and any benefits tied to your return.

What is a T4 slip and where do I get it? A T4 is the slip your employer issues showing how much you earned and how much tax, CPP, and EI were deducted from your paycheques during the year. Your employer is required to provide it by the last day of February. You can also find it in CRA My Account after mid-February.

Can I file my Canadian taxes for free? Yes. Several NETFILE-certified software options are free for simple returns, including Wealthsimple Tax. The CVITP also offers free in-person filing help for people with modest incomes and straightforward situations.

What is NETFILE and do I need it? NETFILE is the CRA’s electronic filing system. When you complete your return in certified software and submit it online, you’re using NETFILE. You don’t need to sign up for it separately - it’s just the mechanism behind electronic filing. It’s the fastest and most common way to file in Canada.

What if I made a mistake on my tax return after filing? You can correct it through CRA My Account using the “Change My Return” feature, or by mailing a T1-ADJ form. Don’t file a second return. The CRA will process the correction and send an updated Notice of Assessment.