Personal Tax Return (T1) in Canada

A T1 personal income tax return reports an individual's income, deductions and credits to the Canada Revenue Agency. The usual filing deadline is April 30 of the following year, or June 15 for eligible self-employed individuals and their spouses or common-law partners; payment is generally due April 30. Accountants Online prepares personal returns online for employees, self-employed professionals and investors across Canada, from document collection to review and filing.

Written by the · Last reviewed: September 11, 2026 · Tax year: 2026

What is a T1 tax return

The T1 is the personal income tax return Canadian residents file each year. It reports your income from employment, self-employment, investments and other sources, calculates the tax you owe or the refund you're due, and is how you claim deductions and credits — from RRSP contributions to home office expenses.

Who needs to file a T1 return

  • Residents of Canada with tax owing for the year.
  • Anyone who wants to receive refundable benefits and credits such as the GST/HST credit or the Canada Child Benefit.
  • Self-employed people reporting business income and claiming business expenses.
  • People who sold investments, rental property or other capital assets during the year.
  • Those asked to file by the CRA, including most new residents.

T1 deadlines and penalties

Most individuals must file and pay any balance owing by April 30. Self-employed individuals and their spouse or common-law partner have until June 15 to file, but any balance owing is still due April 30. If a deadline falls on a weekend or holiday, the CRA moves it to the next business day.

The standard late-filing penalty is 5% of the balance owing plus 1% per complete month late, up to 12 months. If the CRA issued a demand to file and assessed a late-filing penalty for one of the previous three years, the repeat penalty is 10% plus 2% per complete month late, up to 20 months.

Documents you need

  • T4 slips (employment income), T4A slips (pensions, contracts, other income)
  • T5 and T3 slips (investment income)
  • RRSP contribution receipts
  • T2202 tuition slips and student loan interest statements
  • Medical expense and charitable donation receipts
  • For the self-employed: income records, expense receipts and vehicle logs (Form T2125)
  • Prior-year Notice of Assessment, if available

How online T1 filing works

  • Book a free consultation and receive a flat-rate quote in writing.
  • Upload your slips and receipts through the secure client portal.
  • We prepare your T1, check every deduction and credit, and send you the draft to review.
  • You approve the return and authorize filing; we confirm the appropriate filing method and provide a copy. CRA EFILE is for approved tax preparers filing clients' returns, while NETFILE is for individuals filing their own returns.

Pricing

Personal tax returns start at $299 plus tax, with a flat rate confirmed before any work begins. Self-employed returns with business statements are quoted based on the state of your records. See the Pricing page for current plans.

Common mistakes to avoid

  • Missing the April 30 payment deadline even when filing by June 15 as self-employed.
  • Claiming expenses without receipts to support them.
  • Forgetting to report all investment income, including foreign income.
  • Missing RRSP contributions made in the first 60 days of the year, which apply to the previous tax year.

Frequently asked questions

When is my personal tax return due?

April 30 for most individuals — both filing and any balance owing. Self-employed people and their spouses have until June 15 to file, but any balance owing is still due April 30.

What documents do I need for my Canadian tax return?

T4 and T4A slips, T5 and T3 investment slips, RRSP receipts, tuition (T2202) and student loan interest slips, medical and donation receipts — plus income records, expense receipts and vehicle logs if you're self-employed.

What happens if I file my taxes late in Canada?

The standard penalty is 5% of the balance owing plus 1% per complete month late, up to 12 months. The repeat penalty is 10% plus 2% per complete month, up to 20 months, if the CRA issued a demand to file and assessed a late-filing penalty in one of the previous three years.

Can I file my taxes online without visiting an accountant?

Yes. Accountants Online collects your documents online and prepares a draft for your approval without an office visit. Filing arrangements are confirmed for your return: CRA EFILE is used by approved preparers for client returns, whereas NETFILE is for filing your own return.

Do I have to file a tax return if I owe no tax?

Not always — but filing is usually worthwhile even with no tax owing, because benefits like the GST/HST credit and the Canada Child Benefit are calculated from your tax return. If the CRA sent you a request to file, filing is required.

How much does a personal tax return cost?

Personal (T1) returns start at $299 plus tax, quoted as a flat rate before any work begins. Self-employed returns with business income are quoted based on the state of your records.

Sources & references

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