Tax Calendar

Important Dates & Filing Deadlines

The CRA and IRS deadlines every small business needs on the wall — and the official links to act on them.

Important Dates

2026 Tax & Filing Deadline Calendar

Canada + USA deadlines every business owner should know. Bookmark this page and never miss a due date.

January

  • Jan 15USA

    Q4 2025 estimated tax payment due (US Form 1040-ES)

  • Jan 31CAN

    T4 / RL-1 slips due to employees (Canada)

  • Jan 31USA

    W-2 & 1099-NEC forms due to employees/contractors (US)

February

  • Feb 2CAN

    T4 / RL-1 summary filing due (Canada)

  • Feb 28CAN

    T5018 filing due for construction subcontractors (Canada)

  • Feb 28USA

    1099-MISC & 1099-K forms due to recipients (US)

March

  • Mar 15CAN

    Q1 2026 HST/GST filing deadline (monthly filers — Canada)

  • Mar 16USA

    S-Corp & Partnership tax returns due (US Forms 1120-S & 1065)

April

  • Apr 15USA

    Q1 2026 estimated tax payment due (US)

  • Apr 30CAN

    Corporate tax returns due (Canada — T2)

  • Apr 30USA

    Individual tax filing deadline (US Form 1040)

June

  • Jun 15USA

    Q2 2026 estimated tax payment due (US)

  • Jun 15CAN

    Q1 2026 HST/GST filing deadline (quarterly filers — Canada)

September

  • Sep 15USA

    Q3 2026 estimated tax payment due (US)

  • Sep 15USA

    Extended S-Corp & Partnership returns due (US)

October

  • Oct 15USA

    Extended individual & C-Corp returns due (US)

  • Oct 31CAN

    Q3 2026 HST/GST filing deadline (quarterly filers — Canada)

Monthly / Quarterly

  • 15thCAN

    Payroll remittances due (CPP, EI, income tax — Canada)

  • 15thUSA

    Payroll tax deposits due (US — varies by schedule)

  • VariesCAN

    WSIB / Workers' comp premiums (province-specific — Canada)

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