Have you already submitted your tax return? If you have... wait. If the return is rejected for some reason, you can make a correction. If the return is accepted, you can't make any changes to your return or direct deposit information once the tax return has been filed. If the information you provided is for a closed or invalid account, the government will mail you a refund check. If the deposit goes to someone else that actually has the account number you entered, you must work directly with the respective financial institution to recover your funds.