Always keep receipts bank statements invoices payroll records and any other documentary evidence that supports an item of income deduction or credit shown on your tax return Most supporting documents need to be kept for at least three years Employment tax records must be kept for at least four years. Does all know when you never manually save it pays you qualify beyond writing about! However, rather than offering users points for their receipts, Expensify can integrate with other applications to keep track of scanned receipts and purchases. Robots Customer Service Application Support Software Updates Help. Here are eight apps that will pay you money for receipts when you shop.