Hi Everybody, for several years I run a small business part time, for which I will file a EÜR each year to the tax office. So far so easy. My customer base to approximately equal parts either by cash or by bank transfer. In an Excel file then I carry a ZB Customer: Mrs Müller; Power: walkies Fridolin; Price: 15, - Euro; Payment: Transfer These data do I print out then with Word as an invoice or receipt. Now my question: Should I even get a check from the tax office, which want to see: 1) Where this Excel spreadsheet as described above, or I would have an actual copy of the printed invoice / receipt should always be stored. be 2) Must documented when I have rendered the service or is it because the time of the receipt recorded. For tips and experiences I would be grateful. Best regards!