Dynafis Tax Engine

How the Global Tax Decision Engine works

One canonical decision path for jurisdictions, parties, supply, movement, tax and evidence.

The engine processes one canonical tax context rather than country-specific parallel functions. It includes seller, customer, registrations, VAT validation, supply type, movement, marketplace role, currency, time and evidence.

Decision order

Identity and data quality are checked first, then transaction and place of supply, followed by liability, rate or tax category, invoice requirements and e-invoicing consequences.

Verified rules

Every decision carries rule key, version, validity, sources and facts used. Without a reliable country rule the result is REVIEW_REQUIRED, not a fabricated answer.

No duplicate logic

Tax Check, invoice review, exports, KSeF, Peppol and API consume the same decision. UI copy and help content must not implement a second calculation.

Recalculation

Changes to party, VAT ID, movement, FX rate or rule version create a new versioned decision while history remains in the audit trail.