Guide to reimbursement receipts: Requirements and best practices Reimbursement receipts are proof-of-purchase documents that employees submit to get repaid for business expenses they covered out of pocket. They’re a critical part of your company’s expense reimbursement policy, serving as official documentation of legitimate business spending and ensuring tax compliance. Below, Ramp takes a closer look at what reimbursement receipts are, when they are and aren’t required, and what information they should contain.