2026 Canadian Tax Deadlines for Ottawa Filers

CRA deadlines can be easy to miss when several apply in the same year. If you have a balance owing, filing late can trigger penalties that increase monthly. Employment, self-employment, rental income, and instalments can also put more than one date on your calendar.

Here is the 2026 timeline, including the main deadlines for 2025 personal tax returns.

TFSA Annual Contribution Room Added: January 1, 2026

The annual TFSA limit for 2026 is $7,000. Unused contribution room from previous years carries forward, and withdrawals are added back to your room at the start of the following calendar year.

An excess TFSA amount can be taxed at one percent per month. CRA account information is not updated immediately after every transaction, so compare it with your own contribution and withdrawal records before contributing.

RRSP Contribution Deadline: March 2, 2026

To claim RRSP deductions on your 2025 tax return, contributions must be made by March 2, 2026 (60 days after the end of the calendar year). Your latest notice of assessment or CRA account shows the available deduction limit, including unused room and new room after pension adjustments.

An RRSP contribution can reduce taxable income, but the useful contribution amount depends on your available deduction limit and broader tax position.

T1 Filing Deadline: April 30, 2026

For most individuals, the personal tax return (T1) is due by April 30. This is also the balance-due date, so any taxes you owe must be paid by this date to avoid interest charges.

The CRA charges compound daily interest on unpaid balances starting May 1. The prescribed rate changes quarterly, so check the current CRA rate rather than relying on a prior-year figure.

Late-Filing Penalties

If you owe taxes and file after April 30, the CRA applies:

• Initial penalty: 5% of the balance owing
• Monthly addition: 1% per month, up to 12 months (maximum 17% total)
• Higher repeat penalty: If the CRA issued a formal demand to file and charged a late-filing penalty in one of the three previous tax years, the penalty may be 10% plus 2% per month for up to 20 months

Even if you cannot pay the full amount, file on time. Filing by the deadline avoids the late-filing penalty, although interest still applies to an unpaid balance.

Self-Employed Filing Deadline: June 15, 2026

If you, or your spouse or common-law partner, earned self-employment income in 2025, the filing deadline extends to June 15, 2026. The payment deadline is still April 30.

That means if you owe money and wait until June to file, you will have already accumulated six weeks of interest by the time the CRA processes your return. The best approach for self-employed filers is to estimate your balance owing, pay by April 30, and then file the completed return before June 15.

Quarterly Instalment Dates

You may have to pay instalments if your net tax owing is more than $3,000 for 2026 and was also more than $3,000 in either 2025 or 2024. The threshold is $1,800 for Quebec residents. The due dates are:

• March 15, 2026
• June 15, 2026
• September 15, 2026
• December 15, 2026

The CRA sends instalment reminders in February and August, but the obligation exists whether or not you receive a notice. You can calculate instalments using one of three methods:

1. No-calculation method: Pay the amounts shown on your CRA instalment reminder
2. Prior-year method: Base each payment on your 2025 tax owing, divided by four
3. Current-year method: Estimate your 2026 tax and divide by four

If you underpay, the CRA may charge instalment interest. If you overpay, the excess is applied to your final balance. For fluctuating self-employment income, a current-year estimate needs to be updated when revenue changes. Our tax compliance services include instalment calculation and planning.

Other Dates Worth Noting

Trust Returns (T3): March 31, 2026

If you are a trustee of a testamentary or inter vivos trust, the T3 return and any balance owing are due 90 days after the trust's tax year-end. For trusts with a December 31 year-end, that means March 31.

Partnership Information Returns

The T5013 deadline depends on who the partners are. If all partners are individuals, the return is generally due March 31 after the calendar year in which the fiscal period ended. If all partners are corporations, it is generally due five months after the fiscal period. Mixed partnerships use the earlier of those dates. Individual partners still report their share of partnership income on their personal T1.

Objections and Appeals

For an individual, the objection deadline is generally the later of one year after the return's filing due date and 90 days after the date on the notice of assessment or reassessment. Different rules can apply to other taxpayers. A late-objection extension may be available in limited circumstances, but it has its own deadline.

How to Stay Ahead of Tax Deadlines

Build a short calendar around your actual obligations, then keep CRA notices and payment confirmations together. A professional can identify which dates apply when your income sources or filing status change.

For Ottawa filers with straightforward returns, the April 30 deadline is typically the one to circle. For self-employed taxpayers and those with investment or rental income, multiple deadlines apply throughout the year, and a missed instalment can trigger interest before you even realize you owe it.

If you have already missed a deadline, filing promptly can stop additional monthly late-filing penalties. Payment arrangements or taxpayer relief may be available depending on the facts. If the return was filed but information was missed, you can also request a T1 adjustment.

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