CRA Requires Self-employed Individuals To Keep All Records That Support The Income Reported And Expenses Claimed On Their Tax Return For A Minimum Of Six Years From The End Of The Tax Year To Which They Relate. This Includes All Receipts For Business Expenses, Bank And Credit Card Statements, Invoices Issued To Clients, Contracts, Vehicle Logbooks, Home Office Calculations, And Any Other Documentation That Supports The Numbers On Your Return. Digital Records And Receipt Scanning Apps Are Fully Acceptable To CRA And Are Strongly Recommended For The Organizational Ease They Provide.