A reassessment changes a return that was already filed and accepted, sometimes years earlier.

What this means for you

A common mistake is treating the first notice as the final word. Most CRA decisions have a formal review or objection path, and the deadline to use it is usually shorter than people expect — often 90 days from the date on the notice, not the date you opened the envelope.

What you can do next

  • Check whether professional representation is worth the cost for this amount
  • Ask directly whether a payment plan or relief provision could apply
  • Set a personal reminder several days before the official deadline

The 90-day objection window starts from the date on the notice, not the day you read it.