---
title: "Quittio\\Country\\AT\\Rules – API-Referenz"
description: "The public classes in Quittio\\Country\\AT\\Rules."
canonical_url: "https://quittio.dev/docs/api/Quittio/Country/AT/Rules"
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---

> Index of every page on this site: [llms.txt](https://quittio.dev/llms.txt)

[API reference](https://quittio.dev/docs/api)

# Quittio\\Country\\AT\\Rules

## quittio/country-at \#

### [Quittio\\Country\\AT\\Rules](https://quittio.dev/docs/api/Quittio/Country/AT/Rules)

- [`CiusAtRules`](https://quittio.dev/docs/api/Quittio/Country/AT/Rules/CiusAtRules)Rules of the Austrian CIUS of EN 16931: CIUS-AT-NAT 1.0.0 (statutory rules, AT-NAT-…) and CIUS-AT-GOV 1.1.0 (rules of e-Rechnung.gv.at for the federal government, AT-GOV-…), as published by the BRZ for the BMF (e-rechnung.gv.at/go/cius\_at\_nat, /go/cius\_at\_gov).
- [`UstgRules`](https://quittio.dev/docs/api/Quittio/Country/AT/Rules/UstgRules)Mandatory invoice information according to the Austrian VAT act (section 11 UStG 1994), with the simplified invoice of section 11 (6) UStG up to 400 EUR and for small businesses.

```json
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```