How long should you keep your income tax records?
Even if you do not have to attach certain supporting documents to your return, or if you are filing your return electronically, keep your supporting documents for six years in case the CRA selects your return for review. The CRA may ask for documents other than official receipts, such as cancelled cheques or bank statements as proof of any deduction or credit you claimed. Also, keep a copy of your return, the related notice of assessment, and any notice of reassessment.
For more information, see Information Circular IC78-10R5, Books and Records Retention/Destruction.
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