Tax Deadline April 30: The Most Common CRA Mistakes Canadians Make — and How to Avoid Them
Missed deductions, wrong SINs, unreported side income — these are the errors that delay your refund, trigger CRA letters, and quietly cost Canadians millions every year. Here's your 2026 checklist With April 30 just days away, millions of Canadians are racing to pull together slips, receipts, and records before the Canada Revenue Agency's personal income tax deadline. But filing on time and filing correctly are two very different things. The CRA flags thousands of returns each year for errors that are entirely preventable — errors that delay refunds, generate costly reassessments, and sometimes result in penalties that linger for months. Whether you're a first-time filer, a seasoned DIY-er, or someone handing everything to an accountant, here are the 10 most common CRA mistakes Canadians make — and exactly how to avoid each one. 1. Misunderstanding the April 30 deadline The filing deadline for most Canadians is April 30, 2026 . Miss it when you owe money, and you'll ...
