<prompt> Human: My first time relocating to a different job, and the form is asking about moving expenses I have made.Was I suppose to have kept records of moving expenses and am I suppose to somehow give proof later on? If I got partial reimbursement from my employee, do I write only the difference of my out of pocket expenses the partial reimbursement?  <response>: IRS employee here: If I got partial reimbursement from my employee, do I write only the difference of my out of pocket expenses the partial reimbursement?2014 Publication 521 is your reference, beginning on page 9. Was I suppose to have kept records of moving expenses and am I suppose to somehow give proof later on?2014 Publication 17 is your reference, on pages 16 and 17: Proof of Payment One of your basic records is proof of payment. You should keep these records to support certain amounts shown on your tax return. Proof of payment alone is not proof that the item claimedon your return is allowable. You also should keep other documents that will help prove that the item is allowable. Generally, you prove payment with a cash receipt, financial account statement, credit card statement, canceled check, or substitute check. If you make payments in cash, you should get a dated and signed receipt showing the amount and the reason for the payment. If you make payments using your bank account, you may be able to prove payment with an account statement.You provide these records if your your return is selected to be audited for your moving expenses.Thank you for reading. 