Reference

Invoicing reference data: rates, codes, formats, and standards

Structured lookup data for the invoicing concepts that come up across borders: VAT and GST rates, ISO 4217 currency codes, country-by-country invoice requirements, payment term conventions, and VAT number formats. Every row cites a primary source, with a CSV and JSON download for anyone who wants the data programmatically.

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VAT and GST rates by country

Standard rate, reduced rates, and registration thresholds for VAT, GST, and equivalent consumption taxes across major jurisdictions. Each row cites the national tax authority.

Open dataset

By country

Country-by-country reference

Invoice requirements by country

What legally must appear on a B2B invoice in each jurisdiction, the legal basis, simplified-invoice thresholds, e-invoicing mandate status, and retention periods. Each row cites the statute or tax authority.

Open dataset

Payment term conventions by country

Typical B2B payment terms, statutory defaults and maximums, late-payment interest formulas, and prompt-payment legislation by country. Each row cites the controlling statute.

Open dataset

Codes and formats

Standards, codes, and identifiers

ISO 4217 currency codes

Every active ISO 4217 alpha-3 currency code with numeric code, decimal places, symbol, and the countries that use it. Sourced from SIX Group, the ISO 4217 maintenance agency.

Open dataset

VAT and GST number formats

Prefix, format pattern, regex, and verification service for VAT and GST registration numbers across jurisdictions. Built for developers and B2B sellers verifying buyer tax IDs.

Open dataset

How these datasets are sourced

  • →Primary source per row. Every value links to a national tax authority, ISO maintenance agency, or statute portal. Never Wikipedia, never a vendor blog.
  • →Last-verified date is shown. A reference page is only useful when the date next to it is real.
  • →Downloadable as CSV and JSON. Each page exposes the same data programmatically, with row-level citation metadata preserved.
  • →Uncertain values are flagged, not fabricated. Where a primary source could not be confirmed, the cell is empty and the gap is documented.