The field checklist
Your business name, address and tax or trade licence number. The client's legal name and address. A unique invoice number, the issue date and the due date. Line items with description, quantity, unit price and line total. Subtotal, discount, tax and the amount due, with the currency stated.
Then the payment block: how to pay, with enough detail to complete the transfer without asking you a question. That is where most templates are thinnest and where most delays start.
