duty27/eu-vat

The standard VAT rate in every EU member state on any date since 1 January 2016, as small libraries with no
dependencies that work offline.
| Language | Package | Install | Status |
| Node and the browser (TypeScript) | @duty27/eu-vat | npm install @duty27/eu-vat | on npm |
| Python 3.9+ | duty27-eu-vat | pip install duty27-eu-vat | on PyPI |
| Java 11+ | com.duty27:eu-vat | Maven or Gradle, see java/ | on Maven Central |
| AI assistants (MCP server) | @duty27/eu-vat-mcp | claude mcp add eu-vat -- npx -y @duty27/eu-vat-mcp | on npm |
js
import { getStandardRate } from '@duty27/eu-vat';
getStandardRate('DE', '2020-07-01'); // 16 (Germany's temporary cut)
python
from duty27euvat import getstandardrate
getstandardrate("DE", "2020-07-01") # Decimal('16')
java
EuVat.getStandardRate("DE", "2020-07-01"); // 16
All three give identical answers (so does the MCP server) and are built from the same dataset, which Duty27 publishes at
https://duty27.com/vat-rates/history, as CSV and JSON at https://duty27.com/data/eu-standard-vat-rates.json. Every
rate change there cites the law or tax-authority notice that made it, and the 2016 starting rates cite the European
Commission's rate table; the citations are on that page and in the CSV and JSON, not in the packages. It covers
standard rates only; reduced rates are not included. It looks rates up; it does not calculate tax. This is
information, not tax advice.
For deciding what to charge (B2B reverse charge, the EU €10,000 threshold, VIES checks) and keeping the proof
(archive and OSS reports), see the Duty27 API, which is free to try.
## Taking just the one you need
Most people never need this repository: install the package from its registry. To read or work on one library, each
folder is self-contained: it has its own README, licences, build file and tests, and needs nothing from the rest of
the repo. To fetch only one folder instead of the whole repository:
sh
git clone --filter=blob:none --no-checkout https://github.com/duty27/eu-vat.git
cd eu-vat
git sparse-checkout set python # or node, or java
git checkout main
## How they stay identical
One file, data/eu-standard-vat-rates.json, is the source. ./build.sh turns it into each
language's data module and a shared set of expected answers (test-vectors.csv, worked out by a plain scan of the
data, not by any library), then builds and tests all three libraries and the MCP server (which bundles the Node library's data), and finishes by