How to Create an Invoice: A Complete Guide

An invoice is more than a request for money

An invoice is a formal, dated statement of what you supplied and what is owed. Done well, it speeds up payment and doubles as a legal record. Done badly, it invites questions, delays and disputes.

The fields every invoice needs

1. The word "Invoice" clearly at the top.
2. A unique invoice number (see below).
3. Issue date and due date.
4. Your business details — name, address, email, phone; VAT/tax ID where required.
5. The client's details — the legal entity you are billing.
6. An itemised list — description, quantity, unit price, line total.
7. Subtotal, taxes and total.
8. Payment terms and methods — how and when to pay.

Generate all of this in seconds with the free invoice generator.

Invoice numbering that scales

Use a consistent, sortable scheme such as 2026-014 or INV-2026-014. Never reuse a number. If you issue a corrected invoice, cancel the original with a credit note and issue a new one — see the credit note generator.

Sequential numbers make tax reporting and audits far easier.

Payment terms that get you paid

• Net 15 / Net 30 — payment due 15 or 30 days after the invoice date. Net 7 or "due on receipt" works for small jobs.
• Deposits — 30–50% upfront protects you against non-payment.
• Late fees — state a percentage or flat fee in advance; it is only enforceable if disclosed.
• Early-payment discounts — e.g. 2% off if paid within 7 days.

Spell terms out on the invoice itself, not just in the contract.

A simple, reliable process

1. Agree scope, price and terms before starting.
2. Deliver the work and get written acceptance.
3. Send the invoice the same day.
4. Track the due date and send a friendly reminder before it passes.
5. Follow up politely and consistently if it is late — use the payment reminder tool.

Common invoice mistakes

• Missing or duplicated invoice numbers.
• No due date.
• Vague line items like "services" with no breakdown.
• Wrong client entity or billing address.
• Forgetting taxes or applying the wrong rate.
• No stated late-payment policy.
• Sending a PDF that is not text-searchable.

Create yours free

Fill in your details once and download a clean PDF invoice — no signup and nothing stored on our servers.

Create an invoice · Freelance template