T400a 2026

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The document outlines the process for filing an objection to a notice of assessment or determination under the Income Tax Act. It details the submission procedure, deadlines for individuals and corporations, and conditions regarding collection actions on disputed amounts. Additionally, it provides contact information for further inquiries.

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Click ‘Get Form’ to open the t400a in the editor.
Begin by entering your name and address as shown on your notice. Ensure accuracy to avoid processing delays.
In the 'To' section, specify 'Chief of Appeals' along with the address from your notice.
Provide your telephone numbers, including area codes for both home and business contacts.
If applicable, include the name and address of any authorized representative along with their contact number.
Fill in the date of notice, year, month, and number of notice as printed on your assessment or determination notice.
Indicate the tax year and provide your Social Insurance Number or Business Number.
Clearly state the relevant facts and reasons for your objection. If more space is needed, attach a separate sheet.
Finally, sign and date the form. If a corporation or trust is filing, ensure an authorized person signs it.

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