Canada · CRA
Form T1-ADJ — T1 Adjustment Request
Form T1-ADJ asks the CRA to change a tax return you already filed — missed deductions, slips or credits.
Fill T1-ADJ now — free to try
Filled entirely on your computer. Your Social Insurance Number and personal details are never uploaded.
Who needs T1-ADJ?
Anyone correcting a filed T1 return for the current or previous tax years; online changes via My Account are the alternative.
How to fill it with DocsArc
- Open T1-ADJ in the DocsArc workspace with one click above.
- Click any field and type — form fields are detected automatically, and you can add text anywhere.
- Sign it if needed: draw, type or upload your signature, with an automatic date line.
- Save or print. The finished PDF never left your computer.
Frequently asked questions
How far back can I adjust?
Generally up to 10 calendar years back for most adjustment requests.
Always verify you have the current version: official CRA page
© His Majesty the King in Right of Canada. Reproduced from the official source for convenience. DocsArc is an independent tool and is not affiliated with CRA.