How long should you keep your income tax records?

Keep your tax documents and records for at least six years. This applies even when:

• You filed your tax return online
• The form or schedule says that you do not have to attach your supporting documents

The CRA may ask to see these documents later to support your claims. You may need to show more than just official receipts. Keep cancelled cheques, bank statements, and any other proof for deductions or credits you claimed.

You should also keep a copy of your tax return and any notices of assessment or reassessment.

For detailed information, see CRA's Information Circular IC78-10R5, Books and Records Retention/Destruction.