Codex was right that this could misstate real charges: an EU business with a
VAT ID registered in another country is billed under reverse charge, and we
were adding 20 % Austrian VAT to their total anyway. TaxTreatment resolves it
from the customer's VAT ID, and the whole page — cart, plan cards, add-on
cards — now states one treatment instead of contradicting itself.
Explicitly NOT handled: cross-border sales to private individuals, which are
taxed at the buyer's national rate under OSS. That needs a maintained rate
table and a tax adviser, not a guess, so those fall back to the domestic rate —
over-collecting rather than under-collecting.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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