[DOCS] MISSING VAG NUMBER

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://console.anthropic.com/settings/billing

Section/Topic

VAT / Tax ID billing documentation and EU tax exemption behavior

Current Documentation

The billing settings page allows entering a VAT number, and the invoice preview (“Calculated tax” section) shows $0 VAT — implying the reverse charge exemption has been applied. However, the final issued invoice still includes VAT, contradicting what the preview shows.

What's Wrong or Missing?

Current Documentation
The billing interface allows entering a VAT number for EU B2B customers, and the “Calculated tax” section does not show VAT — implying the reverse charge mechanism has been applied correctly.
Issue
Despite successfully saving a valid EU VAT number (HU32998001), VAT continues to be charged on invoices. The “Calculated tax” field shows no VAT at the checkout/preview stage, suggesting the exemption is recognized — but the final issued invoice still includes VAT deducted. This is inconsistent and incorrect for EU B2B reverse charge transactions.
Expected behavior: As an EU-registered business providing a valid VAT number, invoices should be issued VAT-free under the reverse charge mechanism (Article 196 of EU VAT Directive).
Steps to reproduce:

1. Add EU VAT number in billing settings
2. Observe “Calculated tax” shows $0 VAT
3. Review issued invoice — VAT is still present

Suggested Improvement

The billing system should either:

1. Correctly apply VAT exemption on the final invoice when a valid EU VAT number is provided, consistent with what the “Calculated tax” preview shows; or
2. Clearly document that VAT will still be charged despite entering a VAT number, and explain under what conditions the reverse charge exemption actually takes effect.

Currently the UI is misleading — it implies VAT exemption is applied but the issued invoice contradicts this.

Impact

High - Prevents users from using a feature

Additional Context

_No response_