What to Keep
You must keep all records and supporting documents that are required to determine your tax obligations and entitlements. This includes:
- Sales invoices and receipts
- Purchase receipts and expense records
- Bank statements and cancelled cheques
- Payroll records
Retention Period
Generally, you must keep your records for six years from the end of the last tax year they relate to.
Digital Records
The CRA accepts digital records, but they must be readable and accessible. It is highly recommended to have backups.
Official Resource: Keeping records (CRA)
