Guides & articles
What an invoice has to contain, how the tax arithmetic actually works, and how to get paid on time.
What an invoice must contain: required fields in the EU, UK and US
Every jurisdiction has its own list of particulars an invoice has to carry. Here is what the EU VAT directive asks for, what HMRC expects, why the United States is different, and where mandatory e-invoicing is heading.
8 min read
VAT, tax-inclusive prices and invoice numbering: the basics freelancers get wrong
Removing 20 % tax is not the same as subtracting 20 %. Rounding per line and per total give different answers. And a gap in your invoice numbers is not illegal, but it will be asked about. The arithmetic, explained once.
7 min read
Invoicing tips for freelancers: get paid faster without a subscription tool
Late payment is usually a process problem, not a client problem. Clear due dates, payment details that survive a copy-paste, the right wording for late fees, and an archive you can actually search.
7 min read