Their Details and Yours _ must be complete This is basic stuff, but you can't afford to forget it. In addition to the client's address, make sure to include the name of the client's contact person who handles your account! A company with three employees can figure out what you're doing; but in big companies, invoices get misplaced, especially if there's confusion over who belongs to which project. You'll also need your company name, your name, address, telephone number and email address. If they have any questions about the charges, contacting you should be as easy as possible.
Let Them Know How to Pay You _ must be easy Do you want a cheque mailed to you, a money transfer, flowers? Be explicitly clear about what you expect and in what form. It is usually best to discuss with the client beforehand their preferred method or to come to an agreement about a method you both like. If you want a money transfer, provide all the necessary information. Foreign transfers need more than your account number: in some countries, you need your International Bank Account Number (IBAN) or a Bank Identifier Code (BIC). International transfers also double_charge you: the client's bank might charge you ฤ, and your own bank might charge you another ฟ to accept the payment. Make it clear which of you will absorb these charges, and talk it out with them. PayPal is another option, but you still get charged a percentage of the transaction.