How to Invoice as a Freelancer: The Complete 2026 Guide

What does a freelancer need to put on an invoice?

A freelance invoice needs nine things: your name and contact details, the client’s name and address, a unique invoice number, the issue date, a description of the work, the amount per line item, any tax applied, the total due, and the payment due date with payment instructions. If your country gives you a tax or business registration number, add it — many corporate clients cannot process an invoice without one.

That list is not bureaucracy; it is what lets the person who pays you — often a bookkeeper who has never met you — approve the invoice without emailing you questions. Every missing field is a delay.

When should you send your invoice?

Send the invoice the same day you deliver the work. Not the end of the month, not "when you get to it" — the same day. Payment clocks start when the invoice lands, and clients pattern-match: people who invoice promptly are assumed to follow up promptly.

For projects longer than two or three weeks, do not wait for the end: agree on milestones up front and invoice at each one. A 50% deposit before starting is standard for new clients and instantly filters out the ones who were never going to pay.

How should you number your invoices?

Use a simple sequential scheme and never repeat or skip numbers: 2026-001, 2026-002, and so on. Sequential numbering is a legal requirement in many countries (including France and most of the EU) and a practical one everywhere — it is how you, your accountant, and a tax auditor reconstruct your year.

Avoid starting at 001 if it bothers you to look new; start at 2026-100. Nobody checks, but consistent sequence matters.

What payment terms should a freelancer set?

Net 14 (payment within 14 days) is the right default for freelancers in 2026. Net 30 exists because large companies run monthly payment cycles — but for small clients it just normalizes a month of free credit. State an explicit calendar due date on the invoice ("Due June 23, 2026"), because "Net 14" makes the client do math and the ones who do not are late.

Add a late-fee clause even if you never plan to enforce it. In the EU and UK you are legally entitled to statutory interest on late B2B payments; in the US, 1.5% per month is the convention. Invoices that state a late-payment policy get paid measurably faster — the clause works by existing.

Do freelancers charge tax on invoices?

It depends on where you are and how much you earn. In the EU, you charge VAT once you pass your country’s registration threshold (micro-entrepreneurs in France under the franchise de TVA instead write "TVA non applicable, art. 293 B du CGI" on every invoice). In the US, services are untaxed in most states, so most freelancers invoice without sales tax. In Canada you register for GST/HST past CA$30,000 of revenue.

Two rules travel everywhere: show tax as its own line (never bury it in the price), and when you are not required to charge tax, say so explicitly on the invoice so the client’s bookkeeper does not bounce it back asking.

The fastest way to create a freelance invoice

You can build an invoice in a spreadsheet, but you will rebuild it every time and the math errors are on you. A dedicated generator pre-fills your details, numbers invoices sequentially, computes totals and tax, and produces a PDF a client takes seriously. The InvoiceBirds free invoice generator does this in the browser with no account required — fill in the fields, pick a template, download the PDF.

When invoicing becomes more frequent, an account adds the parts a tool alone cannot: saved clients, payment tracking, automatic reminders, and Stripe payment links so clients can pay the moment they open the invoice.

Frequently asked questions