For all tax items, you need to have a receipt. If you don’t have the receipt, then you shouldn’t deduct it, because when the taxman comes calling, he wants to see those receipts, not any excuses why they don’t exist. I’d be very surprised if any company would reprint a receipt containing your entire history of purchasing certain items. I’ve never seen any company do this, beyond my landlords. Why should they have to? They’re under no obligation to have such a system set up. I think you’re screwed, unless you want to take the risk of deducting without having the receipt, or unless there’s a set amount of deductions you can claim without needing a receipt.