The T1 Income Tax and Benefit Return is the form every Canadian individual uses to report personal income to the Canada Revenue Agency each year. It combines your earnings, deductions, and credits from your various slips onto one return that tells the CRA how much federal and provincial tax you owe, or how big a refund is coming back. For the 2025 tax year, filed in 2026, most people face an April 30 deadline, and electronic returns typically take the CRA about four weeks to process.
Who Has to File
You must file a T1 if you owe tax for the year or if the CRA sends you a formal request to file. The agency also lists more than a dozen other triggers, including disposing of capital property, repaying withdrawals from a Home Buyers’ Plan or Lifelong Learning Plan, and owing Canada Pension Plan contributions on self-employment income above $3,500.1Canada Revenue Agency. Federal Income Tax and Benefit Information for 2025
Even when none of those apply, filing is almost always worth doing. The CRA checks your eligibility for the GST/HST credit when it processes your return, so skipping a year cuts off the quarterly payments designed to offset sales tax for lower-income households.2Canada Revenue Agency. How to Get the Credit – GST/HST Credit The Canada Child Benefit works the same way: the CRA recalculates your entitlement each year from the family net income on your return, and payments stop without one.3Canada Revenue Agency. Canada Child Benefit (CCB) If you overpaid tax through payroll withholding, filing is the only way to get the money back.
Key Deadlines
For most individuals, the deadline to file a 2025 return and pay any balance owing is April 30, 2026. Filing late when you owe money triggers interest right away.4Canada Revenue Agency. The Tax-Filing Deadline Is Almost Here
Self-employed individuals and their spouses or common-law partners have until June 15, 2026 to file. Any balance owing is still due April 30, so a self-employed person who pays on May 15 will owe interest even though the return itself isn’t late.5Canada Revenue Agency. 2026 Tax Deadlines for Canadian Businesses and Self-Employed Individuals
When someone dies during the year, their legal representative files a final T1 covering income from January 1 to the date of death. For deaths between January 1 and October 31, the return follows the normal April 30 deadline. For deaths between November 1 and December 31, the deadline is six months after the date of death.
What You Need Before You Start
Your Social Insurance Number is the anchor of the return; the CRA uses it to identify you for income tax and every federal benefit tied to your file.6Canada Revenue Agency. Social Insurance Number (SIN) You’ll also confirm your current address and marital status, since both affect which credits and brackets apply.
The bulk of the return comes from tax slips issued by employers and financial institutions. A T4 reports employment income; a T5 covers investment income like interest and dividends. Most slips arrive by the end of February.7Canada Revenue Agency. Tax Slips at Tax Time Each slip has numbered boxes matched to specific lines on the T1, so preparing the return is largely a matter of moving figures to the right lines.
Auto-fill My Return, available in CRA-certified tax software, pulls the slips and other information the CRA already has on file directly into your return. Most third-party data is loaded by mid-March.8Canada Revenue Agency. Auto-Fill My Return Waiting until then reduces the odds of missing a slip and having to amend later.
Beyond slips, keep receipts for anything you’ll claim: RRSP contributions, child care, medical bills, tuition, moving costs. The CRA can ask for proof during a review, and undocumented claims get denied.
How the T1 Calculates Your Tax
The return works through three figures in sequence: total income, net income, and taxable income. Knowing which deductions apply at which stage helps you see where the savings actually come from.
Total Income to Net Income
Total income is everything you earned from every source: employment wages, self-employment profits, investment income, rental income, pensions, and Employment Insurance benefits. From that, you subtract specific deductions to reach net income. The most common one is RRSP contributions, which directly reduce the income figure used to calculate tax.9Canada Revenue Agency. Line 20800 – RRSP Deduction Child care expenses and union dues also come off here.10Canada Revenue Agency. Line 21400 – Child Care Expenses
Net income matters beyond the tax bill. The CRA uses it to test eligibility for income-tested benefits like the Canada Child Benefit and the GST/HST credit, so a legitimate deduction can lift those payments as well as cut tax.
Taxable Income to Tax Owing
From net income, a final round of deductions produces taxable income. Moving expenses qualify at this stage if you relocated at least 40 kilometres closer to a new job or post-secondary school.11Canada Revenue Agency. Line 21900 – Moving Expenses Capital loss carryovers from earlier years come off here too.
Federal tax rates then apply in brackets, with the lowest rate on the first portion of taxable income and progressively higher rates above each threshold. Provincial or territorial tax adds a separate layer calculated on the same taxable income. Non-refundable tax credits reduce the combined tax. The basic personal amount is the most universal; for 2025, it is up to $16,129 depending on net income, sheltering a base amount of income from federal tax.12Canada Revenue Agency. Line 30000 – Basic Personal Amount Credits for medical expenses and tuition work the same way, reducing calculated tax rather than income.
Cryptocurrency and Foreign Property
Two situations regularly catch filers off guard. If you sold, traded, or spent cryptocurrency during the year, you have to report the resulting income or capital gain. The CRA treats every exchange of a crypto asset for cash, goods, or another cryptocurrency as a taxable event. Moving coins between your own wallets does not trigger tax, but selling for Canadian dollars, swapping one token for another, or buying a product with crypto all do.13Canada Revenue Agency. Reporting Income From Crypto-Asset Transactions
Whether crypto profits are business income or capital gains depends on how you operate. Frequent trading, short holding periods, and a pattern of buying to resell point toward business income, which is fully taxable. Occasional purchases held long-term are more likely capital gains, where only half the gain is included in income.
If you held foreign property with a total cost above $100,000 at any point in the year, you must file Form T1135 with your T1. This covers foreign bank accounts, stocks on non-Canadian exchanges, and real estate outside Canada, and it applies even if the value dropped below the threshold by year-end.14Canada Revenue Agency. Questions and Answers About Form T1135 The penalty for filing T1135 late is $25 per day, up to $2,500 per year, and deliberate non-disclosure carries steeper consequences.15Canada Revenue Agency. Questions and Answers About Penalties
How to Submit the Return
Most people file electronically through NETFILE, the transmission service built into CRA-certified tax software. You prepare the return in the software, it sends the data to the CRA, and you get a confirmation number back as your receipt.16Canada Revenue Agency. Sending a Tax Return Tax professionals use a parallel system called EFILE to submit on your behalf.17Canada Revenue Agency. Tax Software for Filing Personal Taxes
NETFILE has limits. You can’t use it for a deceased taxpayer’s final return, a bankruptcy return, or if you’re a deemed resident with no provincial tax obligation. Uncommon claims like deductions for scientific research expenses also require paper filing.18Canada Revenue Agency. NETFILE
Paper returns mailed to your regional tax centre still work, but they’re slower. The CRA aims to process electronic returns within four weeks and paper returns within eight.19Canada Revenue Agency. Check CRA Processing Times If you’re expecting a refund, filing electronically gets it to you roughly a month sooner.
Paying What You Owe
If the return shows a balance owing, payment is due April 30 no matter which method you used to file. You can pay through online banking by adding the CRA as a payee with your SIN as the account number, through the CRA’s My Payment portal with Interac Debit, Visa Debit, or Debit Mastercard, by pre-authorized debit from your CRA My Account, by credit card through a third-party processor, or in cash or debit at Canada Post locations.
Quarterly Instalments
If your net tax owing is over $3,000 in the current year and in either of the two preceding years, the CRA expects quarterly instalment payments rather than a single lump sum at filing. The Quebec threshold is $1,800.20Government of Canada. Required Tax Instalments for Individuals This commonly hits self-employed people, landlords with rental income, and retirees drawing investment income with no tax withheld at source.
Instalments are due March 15, June 15, September 15, and December 15. Farmers and fishers pay a single annual instalment due December 31.21Canada Revenue Agency. Payment Due Dates – Required Tax Instalments for Individuals Missing a payment or underpaying triggers interest from the day the payment was due, which you can partially offset by overpaying a later instalment early.22Canada Revenue Agency. Interest and Penalties on Late or Incorrect Payments
The Notice of Assessment
After the CRA processes your return, it sends a Notice of Assessment summarizing your income, deductions, credits, and final tax calculation. If the CRA adjusted anything, the NOA explains the change and the reason.23Canada Revenue Agency. Notices of Assessment – NOA or NOR Keep it. Banks ask for the NOA when you apply for a mortgage, and the CRA uses its figures to calculate your RRSP contribution room for the next year. You can check a return’s status through your CRA My Account or the automated tax information phone line, which show the return moving from received to processing to assessed.
If you disagree with the assessment, you can file a formal objection using Form T400A or the “File a formal dispute” option in your CRA My Account. For individuals, the deadline is the later of one year after the return’s filing due date or 90 days from the date on the NOA.24Canada Revenue Agency. Resolving Your Dispute The objection goes to the CRA’s Appeals Division, which reviews it independently from the original assessor. If Appeals doesn’t resolve it in your favour, the next step is the Tax Court of Canada.25Canada Revenue Agency. T400A Notice of Objection
Penalties for Filing Late or Misreporting
If you owe money and miss April 30, the standard late-filing penalty is 5% of the unpaid balance plus 1% for each full month the return remains outstanding, up to 12 months. On a $5,000 balance, that’s $250 immediately plus $50 a month.26Canada Revenue Agency. Interest and Penalties on Late Taxes
If the CRA issued a demand to file and you were already penalized for late filing in any of the three preceding years, the rates double: 10% of the unpaid balance plus 2% for each full month late, up to 20 months.27Justice Laws Website. Income Tax Act – Section 162 There is also a separate repeated failure to report income penalty for filers who miss an income amount and had the same kind of omission in any of the three prior years.28Justice Laws Website. Income Tax Act – Section 163
Knowingly making a false statement or omitting income under circumstances the CRA considers grossly negligent carries a penalty equal to 50% of the understated tax.28Justice Laws Website. Income Tax Act – Section 163 Criminal tax evasion is a separate track: on summary conviction, fines run from 50% to 200% of the evaded tax with possible imprisonment of up to two years, and on indictment, fines start at 100% of the evaded tax with prison terms up to five years.29Justice Laws Website. Income Tax Act – Section 239