Guides
Invoicing guides
Plain-English guides to issuing compliant invoices anywhere in the world. Written for freelancers and sole traders, paired with a free generator that produces the document for you.
What is a proforma invoice?
A proforma invoice is a preliminary, estimated bill you send before the real one - to confirm what a sale will cost, request prepayment, or declare an...
EU VAT invoice requirements
If you invoice a business or customer in the European Union, the document has to carry a specific set of details to be valid for VAT. This guide lists...
Freelance invoice template
A freelance invoice template is the reusable layout you send to clients to get paid for your work. This page explains exactly what a good template con...
Contractor invoice template
An independent contractor invoice is the document you send a client to get paid for work done outside an employment relationship. This guide lists eve...
Consultant invoice template
A consultant invoice is the document you send a client to get paid for advisory or professional services. This guide lists every field a consulting in...
Commercial invoice requirements
A commercial invoice is the customs document that travels with an international shipment of goods. Customs authorities use it to identify what is bein...
What to include on an invoice
A clear invoice gets paid faster and stands up to an audit. This guide is the complete checklist of what to include on an invoice, with a plain-Englis...
How to write an invoice
An invoice is a request for payment that records what you sold, to whom, and on what terms. This step-by-step guide walks you through writing one from...
How to invoice as a freelancer
A clear, beginner-friendly walkthrough of invoicing for freelancers and sole traders: when to send an invoice, how to number them, what details to inc...
Do freelancers need to charge VAT?
Whether a freelancer charges VAT depends almost entirely on one thing: whether they are VAT-registered. This guide explains the registration threshold...
UK VAT invoice requirements
If you are VAT-registered in the United Kingdom, the invoices you issue have to carry a specific set of details to be valid for VAT. This guide lists...