The T1 form in Canada, formally the T1 Income Tax and Benefit Return, is the return residents use to report their annual income to the Canada Revenue Agency (CRA). It gathers your earnings from every source, applies your deductions and credits, and produces a final figure showing either a refund or a balance owing. For the 2025 tax year, most individuals must file their T1 and pay any balance by April 30, 2026.1Government of Canada. Due Dates and Payment Dates – Personal Income Tax
Who Has to File a T1
You must file a T1 if you owe federal or provincial tax for the year.2Government of Canada. Who Should File a Tax Return The obligation also reaches part-year residents (people who moved to or from Canada during the year) and non-residents who earned certain Canadian income, such as capital gains on Canadian property.3Justice Laws Website. Income Tax Act, RSC 1985, c 1 (5th Supp) If the CRA sends you a formal demand to file, you have to comply whether or not you owe anything.
Filing is also the only route into several benefit programs. The GST/HST credit, the Canada Child Benefit, and the Canada Carbon Rebate all depend on your T1 being on record.4Canada Revenue Agency. Keep Getting Your Payments – Canada Child Benefit (CCB) You should also file to claim a refund of tax withheld at source, or to carry forward unused tuition credits to a later year.
Filing and Payment Deadlines
Two dates matter for the 2025 tax year:
- April 30, 2026 is the filing deadline for most individuals and the payment deadline for everyone, including the self-employed.
- June 15, 2026 is the extended filing deadline if you or your spouse or common-law partner were self-employed during 2025. Any balance still accrues interest starting May 1 if it was not paid by April 30.1Government of Canada. Due Dates and Payment Dates – Personal Income Tax
Miss the filing deadline while owing tax and the CRA charges a late-filing penalty of 5% of your balance plus 1% for each full month the return is late, to a maximum of 12 months. If you were penalized for late filing in any of the three preceding years and received a demand to file, the penalty doubles: 10% of the balance owing plus 2% per month for up to 20 months.5Canada Revenue Agency. Interest and Penalties on Late Taxes – Late-Filing Penalty Interest also runs on unpaid balances at the prescribed rate, currently 7% for the second quarter of 2026.6Canada Revenue Agency. Interest Rates for the Second Calendar Quarter
What the T1 Package Contains
The T1 package is built around the T1 General return, which captures your identification details and summarizes your total income, deductions, credits, and final tax calculation.7Canada Revenue Agency. Get a T1 Income Tax Package Supplemental schedules feed detailed figures into the main form.
Common schedules include Schedule 1, which calculates federal tax and applies non-refundable credits; Schedule 3, which reports capital gains and losses; and Schedule 5, which handles dependant-related credits like the Amount for an Eligible Dependant. A separate provincial or territorial worksheet calculates the tax you owe your province. You use the T1 package for the province or territory where you lived on December 31 of the tax year, or the province where you lived on your date of departure if you left Canada during the year.7Canada Revenue Agency. Get a T1 Income Tax Package
How to Complete the Return
Gather Your Slips and Receipts
Collect the tax slips issued by your employers and financial institutions. A T4 reports employment income; a T5 covers investment income like interest and dividends.8Canada Revenue Agency. Tax Slips at Tax Time You also need receipts for anything you plan to deduct or claim: medical bills, charitable donations, childcare costs, RRSP contributions. If you use certified tax software, Auto-fill my return can import many slips directly from the CRA.
Work Through the Income Tiers
The T1 walks you through three levels of income. Total income is everything you earned: employment, self-employment, pensions, Employment Insurance benefits, investments, and other sources. Net income is total income minus deductions such as RRSP contributions (with a 2026 maximum dollar limit of $33,810), union dues, childcare expenses, and moving costs.9Canada Revenue Agency. MP, DB, RRSP, DPSP, ALDA, TFSA Limits, YMPE and the YAMPE Taxable income is net income minus further adjustments such as the capital gains deduction or losses carried forward.
Taxable income is taxed at progressive federal rates, and your province or territory adds its own rates on top.10Canada Revenue Agency. Tax Rates and Income Brackets for Individuals After the tax is calculated, you subtract non-refundable credits (the basic personal amount, tuition, medical expenses, and others) to get your federal tax payable. Compare that against tax already withheld at source through the year: withhold more than you owe, and you get a refund; withhold less, and you pay the difference.
Foreign Property
If at any point during the year you owned foreign property costing more than $100,000 Canadian, you must file Form T1135, Foreign Income Verification Statement, with your T1.11Canada Revenue Agency. Foreign Income Verification Statement Foreign property includes bank accounts held outside Canada, shares in foreign corporations, and real estate abroad, among other assets.
How to Send Your Return to the CRA
NETFILE
NETFILE lets you submit your completed return directly to the CRA using certified tax software, much of which is free or low-cost.12Canada.ca. NETFILE – Tax Software for Filing Personal Taxes The CRA aims to process 95% of electronically filed returns within four weeks, though some are selected for review and take longer.13Canada.ca. Check CRA Processing Times
EFILE
EFILE is the parallel system that registered tax preparers use to submit returns for their clients. You bring your slips and documents to a preparer, who transmits the return from their certified software.14Canada Revenue Agency. EFILE for Electronic Filers Processing times match NETFILE.
Paper
You can still print and mail your return. Download the T1 package from the CRA site or request one by mail.7Canada Revenue Agency. Get a T1 Income Tax Package Paper returns take roughly eight weeks to process,13Canada.ca. Check CRA Processing Times and the mailing address depends on your province. The CRA publishes a lookup for the correct tax centre.15Canada Revenue Agency. Find a CRA Address
Free Tax Clinics
If you have a modest income and a simple tax situation, you may qualify for a free clinic through the Community Volunteer Income Tax Program. Trained volunteers prepare and file the return at no charge, and clinics are hosted by community organizations across the country.16Canada Revenue Agency. Free Tax Clinics
Paying a Balance Owing
If your return shows a balance, you can pay through online banking with your bank or credit union, by pre-authorized debit scheduled through the CRA, by debit card through the My Payment portal, at your bank counter or ATM with a remittance voucher, through a third-party service provider that accepts credit cards (fees apply), or by mailed cheque with a remittance voucher.17Government of Canada. Payment Options for the Type of Payment You Are Making The CRA does not accept cryptocurrency, gift cards, traveller’s cheques, or cash by mail.
The Notice of Assessment
Once the CRA processes your return, it issues a Notice of Assessment. The NOA sets out the CRA’s calculation of your income, deductions, credits, and tax, and shows any refund or remaining balance.18Government of Canada. Notices of Assessment – NOA or NOR – Personal Income Tax If the CRA changed any of your figures, the NOA explains what was adjusted. Keep every NOA. You will need one to apply for a mortgage or student loan, and to reference if you later want to amend the return.
Fixing a Mistake After You File
If you missed a deduction or misreported something, wait until you receive your NOA and then request a change. The fastest option is “Change my return” in your CRA online account, or the ReFILE service in certified tax software; online changes are typically processed within two weeks.19Canada.ca. Changing a Tax Return – Personal Income Tax
You can also mail Form T1-ADJ with supporting documents to your tax centre, though paper adjustments take roughly 16 weeks, and complex cases take longer. A refund from an adjustment can be issued for returns going back up to 10 calendar years from the end of the tax year involved.19Canada.ca. Changing a Tax Return – Personal Income Tax
How Long to Keep Your Records
Keep your tax records and supporting documents for at least six years after filing, even if you filed electronically and did not attach receipts.20Canada.ca. How Long Should You Keep Your Income Tax Records Hold onto copies of your returns, every NOA, tax slips, receipts for anything deducted or claimed, and bank statements that back up your claims. If the CRA reviews or audits your return, those records are your proof.