Guides

Invoicing in Germany and Austria: mandatory fields, §19, §13b and payment reminders

Practical, fact-based guides on mandatory fields, the small-business scheme, reverse charge, and payment reminders — written for freelancers and small businesses in Germany and Austria.

4 guidesGermany & AustriaLast updated:

Try Backbone for 7 daysSee Backbone features

Writing invoices

The basics: what has to be on an invoice for it to hold up?

Start here

Write a compliant invoice

The complete checklist of every mandatory field under §14 UStG and §11 öUStG — including small-amount invoices and the most common mistakes.

GermanyAustria5 min readUpdated

Taxes & special cases

When no VAT is shown on the invoice — and who owes it instead.

Small-business invoice

Invoicing without VAT: the correct §19 UStG note and the current turnover thresholds.

GermanyAustria4 min readUpdated

Reverse-charge invoice

The recipient-liability mechanism under §13b UStG, explained simply — including the §19 trap between Germany and Austria.

GermanyAustria4 min readUpdated

Payment reminders

What to do when an invoice goes overdue.

Write a payment reminder

Reminder or Mahnung? When default begins (§286 BGB), how high default interest is (§288 BGB), and the usual escalation process.

GermanyAustria5 min readUpdated

Looking for a narrower answer than the full reference — the exact wording, the current interest rate, a template to copy? Those live in the blog. To create an invoice right now without signing up, use the free invoice generator, and the software comparison shows which tool fits you.

Now in Backbone

Ready for your first invoice?

✦
Billy drafts it · nothing is sent without your OK