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Canadian filing, penalties and appeals

Canadian tax deadlines that protect your money

What to file with the CRA, when penalties begin, and how long you have to challenge a decision. Every step opens the official source.

A clean tax deadline timeline beside a calculator, brass pen and coins

Tax year

1 January to 31 December

When a due date falls on a Saturday, Sunday or public holiday, the CRA accepts the next business day.

File and pay

2 March 路 Schedule 7

RRSP deadline

Last day to put money into an RRSP and take the deduction against last year's income.

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15 March 路 Official deadline

First instalment payment

Quarterly instalment one, if the CRA asked you to pay by instalments.

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30 April 路 T1

T1 return and payment

File your T1 and pay any balance owing for last year. Self-employed people still pay today even though they can file later.

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15 June 路 T2125

Self-employed return and second instalment

Filing deadline if you or your spouse ran a business, and quarterly instalment two.

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15 September 路 Official deadline

Third instalment payment

Quarterly instalment three.

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15 December 路 Official deadline

Fourth instalment payment

Final quarterly instalment for this year.

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Penalties, payment help and appeals

The date on your own notice wins. Appeal periods often start when the CRA sends that notice, not at the tax year end.

appeal

Object to an assessment or reassessment

Whichever is later: 1 year after the filing due date, or 90 days after the notice date

Use the date printed on your notice of assessment. Late objections need an extension request with reasons.

Open T400A or My Account objection

file

T1 return and balance owing

30 April, or 15 June if you or your spouse are self-employed

Self-employed filers still have to pay any balance owing by 30 April.

Open T1

penalty

Late filing penalty and interest

Starts the day after the filing or payment deadline

5% of the balance owing plus 1% for each full month late, and more if you were charged a late penalty in recent years.

Open Penalties and interest

pay

Arrange a payment plan or ask for relief

Within 10 calendar years of the tax year concerned

Call CRA for a payment arrangement first. RC4288 asks for penalties or interest to be cancelled for reasons beyond your control.

Open RC4288 taxpayer relief request

Self-employed? Build that part of the return

Every T2125 line in plain words, with CPP on self-employment, Schedule 8, and Schedule 1 for tax on split income.

Build your complete Canadian return

Work through income, expenses and deductions, see the estimated tax, then copy the checked figures into the official filing service.

Start the step-by-step return

Official library connection

The library holds the official rules behind these dates. Source checks can flag a change, but a person must approve it before Taxmiser changes a calculation.

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