The EU's official VAT rate database got history wrong. Here’s how we caught it.

说明与用途

TEDB 的欧盟增值税历史数据存在错误，Duty27 通过与国家法律和委员会的历史增值税率文件交叉核对，发现并纠正了这些错误。

问题

The TEDB SOAP API provides historical EU VAT rates, but its data contains inaccuracies that can lead to incorrect invoicing, refunds, and tax compliance issues.

结果

Duty27 identified and corrected multiple historical VAT rate errors in TEDB, improving accuracy for invoicing and compliance.

工作流

• Query TEDB for each EU country four times a year back to 2016.
• Flag any rate change between checkpoints.
• Cross‑check flagged changes against national law or the Commission’s historical VAT rates document.
• If a discrepancy is found, record the correct rate and source law.
• Publish the corrected history as CSV/JSON with source citations.
• Maintain raw TEDB responses for auditability.
• Treat TEDB as a lead, not a definitive source.
• Check for conflicting values on the same date, not just changes between dates.
• Cite every change to the law; if the source disagrees, the law prevails.

证据

We built Duty27's rate history on it. Then we checked its answers against the law, and some of them were wrong.

来源

We queried TEDB for every EU country four times a year, back to 2016, and flagged every place where the rate changed between two checkpoints.

来源

Greece raised its standard rate from 23% to 24% on 1 June 2016. TEDB reports 24% for the months before that too.

来源

Germany cut its standard rate from 19% to 16% for the second half of 2020. Our August 2026 import from TEDB recorded 19% for both 1 July and 1 October 2020.

来源

We found both errors by comparing against the Commission's own historical "VAT rates applied in the Member States" document.

来源

Every rate change cites its source. Each change in Duty27's data points to the law or the tax authority statement we actually read, and the build fails if a change has no source.

来源