Tax Insights: 2026 Annual tax filing and remittance deadlines for corporations

Issue 2026-03

In brief

Canadian corporations are required to file annual income and capital tax returns (due six months¹ following each taxation year end), and to meet several other Canadian annual filing and remittance deadlines. This Tax Insights outlines some of the more common compliance requirements (and some significant new requirements) to be considered at this time of year. Others also may apply (e.g. T4A information return to report certain benefits to shareholders). 

Failure to meet these requirements may result in the assessment of penalties and/or interest for non‑compliance, late filing or late remittance. A waiver may be obtained in certain circumstances. 

Some of the compliance requirements discussed below also apply to individuals, trusts and partnerships. Key filing deadlines for corporations, as well as for individuals, trusts and partnerships, are summarized in Tax Facts and Figures 2025, available at www.pwc.com/ca/taxfacts (page 50). Deadlines falling on holidays or weekends may be extended to the next business day.

In detail

Calendar year deadlines

T4 – Statement of Remuneration Paid²

Employers are required to file a T4 information return (T4 Summary and T4 Slips) to report remuneration paid. The 2025 return must be filed on or before February 28, 2026.

T5 – Return of Investment Income²

The T5 return (T5 Summary and T5 Slips) reports various types of investment income (e.g. dividends and interest) paid to residents of Canada, including corporations. The 2025 return is due to be filed on or before February 28, 2026.

NR4 – Statement of Amounts Paid or Credited to Non-Residents of Canada

The NR4 return (NR4 Summary and NR4 Slips) reports amounts paid or credited to non-residents that are subject to Canadian withholding tax (e.g. royalties, dividends, interest, management fees). Certain amounts paid or credited to non‑residents must be reported in the NR4 return even if they are exempt from non-resident withholding tax (e.g. certain royalty payments may be exempt pursuant to a tax treaty). The filing due date for the 2025 return is March 31, 2026.

Taxation year deadlines

Final payments of income and capital taxes

Final payments of corporate income and capital taxes (both federal and provincial¹) are required within two months of each taxation year end (a Canadian-controlled private corporation may qualify for a three‑month final payment due date). For a corporation that does not qualify for the three-month due date and that has a December 31, 2025 year end, the final payment due date is February 28, 2026.

T2 schedule 130 – Excessive Interest and Financing Expenses Limitation (EIFEL)

The amount of net interest and financing expenses (IFE) that certain taxpayers may deduct in computing their taxable income is limited, based on a fixed percentage of earnings for tax purposes before interest, taxes, depreciation and amortization. T2 schedule 130, which reports net IFE for these corporations³ must be filed as part of a corporation’s income tax return, within six months of a corporation’s taxation year end: June 30, 2026, for a December 31, 2025 year end. Various elections may need to be considered and filed at the time of filing T2 schedule 130, particularly for corporations that are part of a group.

T661 – Scientific Research and Experimental Development (SR&ED) Claim⁴

SR&ED tax credits are claimed on a taxation year basis; a corporation has 18 months from the end of a taxation year to file its claim for that particular year. Extensions are not allowed, and if a corporation is late in filing or submits an incomplete claim, the claim for SR&ED tax credits will be denied. 

Filing at least three months before the 18-month deadline is recommended to allow time to provide the CRA with any requested additional information before this deadline. Corporations with a December 31, 2024 year end have until June 30, 2026 to file their SR&ED claim for that year. 

For a partnership, the SR&ED claim (Form T661) should be filed with the partnership information return no later than 12 months after the earliest of all filing due dates for the return of income of the members for the tax years in which the partnership’s fiscal period ends. Investment tax credits allocated to corporations by the partnership must be supported by a partnership information slip (T5013). The T5013 must be filed on time and can be amended to include the T661 information.

T106 – Information Return of Non-Arm’s Length Transactions with Non‑Residents

Canadian corporations must file a T106 Information Return annually to report transactions with non‑arm’s length non-residents. The T106 Return must be filed by June 30, 2026, for a corporation’s December 31, 2025 year end.

T1134 – Foreign affiliate reporting

Canadian corporations with foreign affiliates must file a T1134 Information Return (T1134 Summary and T1134 Supplements) annually. A separate supplement must be filed for each controlled and non‑controlled foreign affiliate (except for foreign affiliates that meet certain exemption criteria). The return is due 10 months following a corporation’s year end: by October 31, 2026 for a December 31, 2025 year end.

T1135 – Foreign Income Verification Statement⁵

Form T1135 must be filed for each taxation year during which a Canadian taxpayer held “specified foreign property” with a cost of more than $100,000 at any time in the year. Specified foreign property may include foreign bank accounts and investments, indebtedness receivable from non-residents and other property held outside Canada. If the total cost of the taxpayer’s specified foreign property is less than $250,000 throughout the taxation year, the taxpayer can report the property using the streamlined information reporting requirements on Form T1135. The form must be filed within six months of a corporation’s taxation year end: June 30, 2026, for a December 31, 2025 year end.

RC3133 – Reportable Uncertain Tax Treatments Information Return⁶

A corporation with assets of at least $50 million at the end of its taxation year is required to file a prescribed information return to disclose any reportable uncertain tax treatments that are reflected in its audited financial statements (or those of a group of which it is a member) that are prepared in accordance with International Financial Reporting Standards or other country-specific generally accepted accounting principles relevant for corporations that are listed on a stock exchange outside Canada. This filing obligation was implemented as part of several enhancements⁷ made to Canada’s mandatory disclosure rules (MDR).⁸ The information return must be filed by June 30, 2026, for a corporation’s December 31, 2025 year end.

RC4649 – Country-by-Country Report (CbCR)

A multinational enterprise (MNE) group that had total consolidated group revenue of €750 million or more (approximately CA$1 billion) in the prior fiscal year must file a CbCR. The CbCR must generally be filed within 12 months after the last day of the “Reporting Fiscal Year” of the MNE group: December 31, 2026 for an MNE’s December 31, 2025 fiscal year end.

Global Minimum Tax reporting⁹

The Global Minimum Tax Act (GMTA) applies to qualifying MNE groups for fiscal years that begin after December 30, 2023. At least one member of an MNE group that had total consolidated group revenue of €750 million or more in the prior fiscal year must file one or more of the following GMTA returns:

• GloBE Information Return (GIR)
• Global Minimum Tax Return
• GIR Notification

The first GMTA returns must be filed for the 2024 taxation year, due 18 months after the end of the relevant fiscal year, so by June 30, 2026 for a corporation’s December 31, 2024 year end (the filing deadline is 15 months after the fiscal year end for GMTA return filings subsequent to the MNE group’s first filing).