Invoicing guides and answers · Page 2
In-depth, practical articles for freelancers and small businesses, with examples and links to the official rules.
- What is a tax invoice?A tax invoice shows the VAT or GST charged so your customer can claim it back. See what it must include in the UK, Australia, the EU and more.5 November 2026 · 6 min read
- What is an invoice number?An invoice number is a unique reference for each invoice. Learn why it must be sequential, common formats, worked examples and how to fix gaps.5 November 2026 · 6 min read
- What is an invoice?An invoice asks a customer to pay for goods or services. Learn what goes on one, see a worked example, and how it differs from a quote or receipt.5 November 2026 · 6 min read