Filing taxes for the first time is mostly the same as any other year, with a few differences: you have no previous return or Notice of Assessment to work from, CRA My Account has to be set up from scratch, and nothing carries forward yet. This page covers what is different the first time. For the general process every year, see the guide to filing a tax return in Canada, and if you are new to Canada, filing your first return as a newcomer covers arrival dates and world income.
Why Your First Return Matters
A first return starts your RRSP contribution room and puts you on the CRA’s records for income-tested benefits such as the Canada Child Benefit and the Canada Groceries and Essentials Benefit. Many student grants and loans also ask for a filed return.
Gather Your Documents
What You Will Need
| Document | What It Shows | Who Sends It |
|---|---|---|
| T4 slip | Employment income + tax withheld | Your employer (by end of February) |
| T4A slip | Other income (scholarships, freelance) | Payer |
| T5 slip | Interest and investment income | Your bank |
| T2202 | Tuition amounts | Your school |
| RRSP contribution receipt | RRSP contributions | Your financial institution |
| Social Insurance Number (SIN) | Your tax ID | Service Canada |
| Prior year return | Carry-forwards (if applicable) | Your records |
No T4 yet? Log into My CRA Account after late February: your employer’s submitted copies appear there.
First-Time Filer Checklist
- Gathered all T slips from employers, banks, schools
- Have your SIN ready
- Have your date of birth and address
- Collected receipts for any deductions (tuition, medical, moving, donations)
- Know which province you lived in on December 31 of the tax year
Set Up Your CRA My Account
CRA My Account is your personal online portal with the CRA. Registering before filing lets you:
- See your T slips directly
- Track your refund status
- Check RRSP and TFSA room
- Set up direct deposit for your refund
Register at canada.ca/my-cra-account. You will need your SIN, date of birth, and a code that the CRA mails to you. What you can do once you are in is covered in how to use CRA My Account.
Preparing and Submitting a First Return
Most tax software works as an interview: it asks about your personal details, each T slip and your deductions and credits, then fills in the T1 General return for you. The tax software hub compares the options, and the free tax software guide lists the no-cost ones.
The credits first-time filers most often claim are the basic personal amount, the tuition tax credit for post-secondary students and, with large medical bills, the medical expense tax credit.
Some first-ever returns can’t be verified electronically and have to go on paper. NETFILE vs paper filing sets out who must paper-file and how each method works.
Red flags before you submit: a very large refund (over $5,000) or a large balance owing usually points to an entry error, often in the T4 amounts.
Common First-Time Filer Mistakes
| Mistake | Consequence | How to Avoid |
|---|---|---|
| Not filing at all | Miss out on benefits | File every year, even with no income |
| Missing T slips | Audits or penalties | Log into CRA My Account to confirm all slips |
| Wrong province | Under/over paying tax | Use your address on December 31 of the tax year |
| Not claiming tuition | Unused tuition credits | Enter your T2202 amounts |
| Not setting up direct deposit | Wait weeks for cheque | Add bank info in software or CRA My Account |
After You File
The CRA’s reply is your first Notice of Assessment, which shows your assessed tax, your refund or balance owing, and your RRSP room for next year; how to read a Notice of Assessment walks through each section. Keep it on file, since you will need it next year.
Refunds on electronic returns with direct deposit usually arrive fastest; how long a tax refund takes has the timelines by method. Any balance owing is due on the payment date in the tax deadline calendar, and interest starts after it.
Key Tax Terms for First-Timers
| Term | Plain English |
|---|---|
| T4 | Slip from your employer showing income and tax withheld |
| NETFILE | System for electronically submitting your return to CRA |
| NOA | Notice of Assessment: CRA’s official response to your return |
| Refund | Money back because too much was withheld |
| Balance owing | Tax you still owe after credits and withholding |
| Tax credit | Reduces your tax bill |
| Tax deduction | Reduces your taxable income |
| Marginal tax rate | Tax rate on your last dollar of income |
| SIN | Social Insurance Number: your tax ID |