The T1 Income Tax and Benefit Return is the annual form Canadian residents use to report their income, claim deductions and credits, and settle any balance owing with the Canada Revenue Agency (CRA). It is also how the government determines your eligibility for benefits like the GST/HST credit, the Canada Workers Benefit, and the Canada Carbon Rebate. Non-residents who earned Canadian income or disposed of Canadian property during the year may need to file one too. For most people, the T1 for the 2025 tax year is due April 30, 2026, and most Canadians submit it electronically through certified tax software.
Who Has to File
The Income Tax Act creates several triggers that make filing mandatory. You must submit a T1 if you owe federal or provincial tax for the year, if you realized a taxable capital gain, or if you disposed of capital property during the year.1Department of Justice Canada. Income Tax Act – Section 150 You must also file if you have a positive balance under the Home Buyers’ Plan or the Lifelong Learning Plan at year-end, because the CRA tracks your annual repayments through the return.2Canada Revenue Agency. How to Report Home Buyers’ Plan Repayments on Your Income Tax and Benefit Return
Even without those triggers, the CRA can issue a formal demand requiring you to file under subsection 150(2) of the Act.3Canada Revenue Agency. Unfiled Tax Returns Ignoring that demand is a criminal offence carrying a fine between $1,000 and $25,000 and potentially up to 12 months of imprisonment.4Department of Justice Canada. Income Tax Act – Section 238
Plenty of people who aren’t required to file should do it anyway. Filing is the only way to receive the GST/HST credit, which the CRA calculates automatically from your return.5Canada Revenue Agency. GST/HST Credit – How to Get the Credit The same goes for the Canada Workers Benefit, which you claim directly on the return.6Canada Revenue Agency. Canada Workers Benefit (CWB) – How to Claim If you have unused tuition amounts you’re carrying forward, you must file every year between when you incurred the expense and when you claim it, or the carryforward disappears.7Canada Revenue Agency. Transferring and Carrying Forward Amounts Filing is also how you recover overpaid installments or excess withholdings.
Residency Determines What You Report
If you have significant residential ties to Canada (a home, a spouse or dependants here, personal property), you’re generally a resident for tax purposes and must report your worldwide income. Without significant ties, staying in Canada 183 days or more makes you a deemed resident with the same worldwide-income obligation.8Canada Revenue Agency. Deemed Residents of Canada Non-residents who stayed fewer than 183 days and lack significant ties report only Canadian-source income.9Canada Revenue Agency. Non-Residents of Canada
When the T1 Is Due
For most individuals, the T1 for the 2025 tax year is due April 30, 2026. Any balance owing must be paid by that date to avoid interest. April 30, 2026 falls on a Thursday, so there is no weekend extension.
Self-employed individuals and their spouses or common-law partners have until June 15, 2026 to file. The catch is that any balance owing is still due April 30. The later filing date only extends the paperwork deadline. Interest starts running May 1 on any unpaid amount, no matter which deadline applies to the return itself.10Canada Revenue Agency. What You Need to Know for the 2026 Tax-Filing Season
What to Gather Before You Start
Before opening the T1, pull together the information slips that report your income and withholdings. The most common is the T4, which your employer issues to show employment income along with deductions for the Canada Pension Plan and Employment Insurance.11Canada Revenue Agency. T4 Slip – Statement of Remuneration Paid Investment income comes on T5 slips (interest and dividends) and T3 slips (trust income). Retirees get a T4A(OAS) or T4A(P) for Old Age Security and CPP.
Your Social Insurance Number is the identifier linking the return to your CRA account.12Canada Revenue Agency. Social Insurance Number (SIN) You’ll also want receipts for anything you plan to claim: RRSP contributions, medical expenses, charitable donations, moving costs, childcare.
How the Form Flows
The T1 works through a set sequence: calculate total income, subtract deductions to get net income, subtract further amounts to get taxable income, apply tax rates, then apply credits. Each step feeds the next.
Employment income from your T4 goes on Line 10100.13Canada Revenue Agency. Line 10100 – Employment Income Other lines capture investment income, self-employment earnings, rental income, taxable capital gains, pension income, EI benefits, and other sources. The sum is your total income.
From total income you subtract deductions like RRSP contributions, union dues, childcare expenses, and moving expenses to reach net income at Line 23600. That figure matters beyond your tax bill; the CRA uses it to calculate income-tested benefits like the GST/HST credit and the Canada Child Benefit. A further set of deductions (capital loss carryforwards, the northern residents deduction) produces your taxable income at Line 26000, which is what the tax brackets apply to.
For the 2026 tax year, the lowest federal rate is 14%, reduced from the previous 15%, and the top rate remains 33%. Bracket thresholds are indexed to inflation annually, and every province and territory adds its own brackets on top.14Canada Revenue Agency. Tax Rates and Income Brackets for Individuals After federal tax is calculated, non-refundable credits reduce it. The basic personal amount for 2026 is up to $16,452, so no federal tax applies to that first slice of income. Credits for CPP contributions, EI premiums, charitable donations, and medical expenses reduce the bill further. What remains is either your balance owing or your refund, after crediting tax already withheld or paid through installments.
Deductions and Credits Worth Knowing
RRSP Contributions
Contributions to a Registered Retirement Savings Plan are one of the largest deductions available. For 2026, the maximum RRSP contribution is $33,810 or 18% of your prior year’s earned income, whichever is less, reduced by any pension adjustment from an employer plan.15Canada Revenue Agency. MP, DB, RRSP, DPSP, ALDA, TFSA Limits, YMPE and the YAMPE Your personal deduction limit appears on your most recent Notice of Assessment.16Canada Revenue Agency. Where Can You Find Your RRSP Deduction Limit Unused room carries forward indefinitely.
Moving Expenses
If you moved at least 40 kilometres closer to a new job, business, or full-time school, you can deduct eligible moving costs on Line 21900. Qualifying expenses include transportation and storage of household items, travel, up to 15 days of temporary living expenses, lease cancellation fees, and, if you sold your old home, real estate commissions and legal fees on both the sale and the new purchase. You can also deduct up to $5,000 to maintain a vacant former home while trying to sell it.17Canada Revenue Agency. Line 21900 – Moving Expenses The deduction only applies against income earned at the new location.
Medical Expenses
You can claim eligible medical expenses that exceed the lesser of 3% of your net income or a set dollar threshold ($2,834 for the 2025 tax year, indexed annually).18Canada Revenue Agency. Eligible Medical Expenses You Can Claim on Your Tax Return Prescription drugs, dental work, eyeglasses, and certain travel for treatment all count. You can claim for yourself, your spouse, and dependent children, and you can pick any 12-month period ending in the tax year to maximize the claim.
Foreign Property Reporting
If you’re a Canadian resident holding specified foreign property with a total cost above $100,000 CAD at any point during the year, you must file Form T1135 alongside your T1. The threshold uses original cost, not market value, and all qualifying foreign holdings are added together. Foreign bank accounts, stocks on foreign exchanges, rental properties abroad, and interests in non-resident trusts all count. Personal-use property like a vacation home you use yourself is excluded.19Canada Revenue Agency. Questions and Answers About Form T1135
Penalties are steep. The standard late-filing penalty is $25 per day, up to $2,500 per year. If the CRA finds gross negligence, the penalty rises to $500 per month, up to $12,000. Ignoring a formal demand to file doubles the gross-negligence penalty to $1,000 per month, capped at $24,000.20Department of Justice Canada. Income Tax Act – Section 162 The T1135 is due the same day as your T1.
How to Submit
Most Canadians file through NETFILE, which transmits your return directly to the CRA using certified tax software.21Canada Revenue Agency. NETFILE A successful transmission produces a confirmation number as proof of filing. If you use a professional preparer, they submit through EFILE on your behalf.22Canada Revenue Agency. Tax Software for Filing Personal Taxes Refunds from electronically filed returns typically arrive within two weeks; paper returns can take eight weeks or more.
Paper filing is still accepted. You mail the return to the tax centre assigned to your province, as listed in the T1 General guide. It must be postmarked by the filing deadline to count as on time.23Canada Revenue Agency. Interest and Penalties on Late Taxes
What Late Filing and Late Payment Cost
If you owe tax and file after the deadline, the CRA charges a late-filing penalty of 5% of your balance owing plus 1% for each full month the return remains outstanding, up to 12 months. That caps a first-time penalty at 17% of the balance.23Canada Revenue Agency. Interest and Penalties on Late Taxes
Repeat offenders pay much more. If you were charged a late-filing penalty in any of the three preceding tax years and received a demand to file, the base rises to 10% of the balance plus 2% per full month, up to 20 months, a potential 50% total.23Canada Revenue Agency. Interest and Penalties on Late Taxes
Compound daily interest also runs on any unpaid balance starting May 1. As of Q2 2026, the prescribed rate on overdue taxes is 7%.24Canada Revenue Agency. Interest Rates for the Second Calendar Quarter The rate is reset quarterly based on Government of Canada treasury bill yields. Interest and penalties compound together, so the real cost climbs faster than the headline percentages suggest.
The Notice of Assessment and Keeping Records
Once the CRA processes your return, it issues a Notice of Assessment (NOA) confirming the results. The NOA shows your final balance or refund, any adjustments the CRA made, and updated figures for next year, including your RRSP deduction limit.25Canada Revenue Agency. Notices of Assessment – NOA or NOR – Personal Income Tax Keep it. It’s the official record for the year, and you’ll need the RRSP figure when you contribute. If you disagree with any CRA adjustment, you have 90 days from the date on the NOA to file a formal objection.
You must keep supporting documents (receipts, slips, bank statements, anything backing up what you reported) for six years from the end of the tax year they relate to. Records supporting your 2025 return need to stay accessible through the end of 2031. If you filed late, the six-year clock runs from the date you actually filed, not the original due date.26Canada Revenue Agency. Where to Keep Your Records, for How Long and How to Request the Permission to Destroy Them Early If you’ve filed an objection or appeal, hold everything until it’s fully resolved.
If You’re a U.S. Citizen Living in Canada
Filing a T1 is only half the picture for American citizens and green card holders resident in Canada. The United States taxes its citizens on worldwide income regardless of where they live, so you also have to file a U.S. Form 1040 each year.27Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad Americans abroad get an automatic two-month extension, making the U.S. return due June 15 without a request, though interest on any unpaid U.S. tax still runs from April 15.
The foreign earned income exclusion lets you exclude up to $132,900 of qualifying earned income from U.S. tax for 2026, and the foreign tax credit can offset U.S. tax on income already taxed by Canada.28Internal Revenue Service. Figuring the Foreign Earned Income Exclusion Many Americans in Canada end up owing little or nothing to the IRS, but the filing obligation stays. If you hold Canadian bank or investment accounts with a combined balance exceeding US$10,000 at any point during the year, you also have to file a Report of Foreign Bank and Financial Accounts with the U.S. Treasury.27Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad The penalties for missing that report are severe.