Is it necessary for me to give customers receipts?
I own a small henna tattoo business that operates at farmers markets and for hire at public and private events. My customers often pay me in either cash or check in addition to card. With card, I automatically send them receipts, but with cash and check, I don't know how to offer them receipts since I usually have a long line and am only one person. Therefore, hand-writing out receipts for each transaction is not possible. Is it necessary to give each customer a reciept? I want to comply with all legalities. I currently track my income and expenses and enter them in a spreadsheet, but I am curious whether I need more of a paper trail to document who each part of my income is coming from.