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E-Invoicing Mandates: Country-by-Country Overview

E invoicing
15 Feb, 2026

Europe is rapidly making e-invoicing mandatory. More and more countries require businesses to exchange invoices as structured electronic files — not PDFs or paper. Some countries have been at it for y...

XML Invoice Received by Email — What Now?

E invoicing
14 Feb, 2026

There's a new email in your inbox. A supplier sent an invoice, but instead of the usual PDF, there's an XML file attached. You open it and see nothing but code. No amounts, no clear layout — just angl...

How to Open an XML Invoice on Mac

E invoicing
13 Feb, 2026

You just received your first XML invoice. You double-click it, and instead of a readable invoice, you're staring at a wall of angle brackets and code. Your Mac has no idea what to do with it. You're n...

E-Invoicing in Germany: What Changes in 2025 and 2027

E invoicing
04 Feb, 2026

Germany is rolling out mandatory e-invoicing in phases. Since January 1, 2025, every business must be able to receive electronic invoices. From January 1, 2027, most businesses must also send them. If...

E-Invoicing in Belgium: What Changes in 2026

E invoicing
24 Jan, 2026

Since January 1, 2026, all B2B transactions between Belgian VAT-registered businesses must use structured electronic invoices. PDF invoices are no longer sufficient. If you run a business in Belgium —...

What is a Peppol Invoice?

E invoicing
15 Jan, 2026

You just received an invoice from a supplier. But instead of a familiar PDF, it's an XML file. You double-click it, and all you see is a wall of code. Sound familiar? That XML file is most likely a Pe...

Why I Built UBL Buddy

Behind the scenes
14 Jan, 2026

It started with an invoice I couldn't open. A supplier sent me an email with an attachment. Not a PDF — an XML file. I double-clicked it, and my Mac opened it in a text editor. Lines of code. Angle br...