发票对个人很重要吗英文，Yes, invoices are important for individuals.

Receipts can be an essential aspect of life for individuals. Receipts provide documentation of a financial transaction, which is often necessary for a variety of reasons including taxation, auditing, and other financial reasons. Receipts can also provide detailed evidence of an individual’s financial activity, which can be extremely useful when accounting for possible expenses, setting a budget, or tracking customer purchases. In addition, receipts are important for returns, exchanges, and warranties. Without a valid receipt, businesses may not be able to offer refunds, exchanges, or potential warranty coverages, as the receipt is the only proof of purchase. Therefore, having the necessary receipts for businesses and personal purchases can make life easier in multiple situations, and always having an updated documentation of financial transactions can be extremely valuable.