Every invoice needs eight things: your business details, your client's details, a unique invoice number, the issue date, a due date, an itemized list of what was delivered, the total amount, and payment instructions. This guide walks through each one step by step, covers the most common mistakes that delay payment, and explains how to set up a workflow you can repeat for every client.
If you're a sole proprietor or freelancer, you generally don't have to issue invoices for services to individual consumers, but you should keep records of every sale for tax purposes, and most B2B clients will expect an invoice.
Whatever you want, as long as you're consistent. INV-001 is the simplest. If you're worried about looking new, start at a higher number like INV-1001.
The same day, or within 24-48 hours of completion. Speed of invoicing correlates strongly with speed of payment.
Yes, in most jurisdictions, as long as you've stated the late fee policy on the invoice or in your contract before the invoice was sent.
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