Audit-proof EU arrival confirmation (Gelangensbestätigung, §17a UStDV) and zero-rating evidence for innergemeinschaftliche Lieferungen.
Flag EU acquisitions (i.g. Erwerb) and imported services for reverse-charge VAT (§1a / §13b UStG) and map them to the correct UStVA boxes.
German cash-basis VAT (Ist-Versteuerung, §20 UStG): threshold watch, eligibility check and a clean Soll<->Ist changeover with transition register.
EU OSS (One-Stop-Shop, §18j UStG) worksheet: aggregate intra-EU B2C distance sales by destination rate, watch the EUR 10,000 threshold, build the BZSt-importable OSS return data.
Scan postings for wrong or missing German tax keys (DATEV BU-Schlüssel), map Odoo taxes to BU keys, propose fixes and produce an exception report before the Kanzlei finds them.
Qualified VAT-ID confirmation (USt-IdNr) via the BZSt eVatR REST API and EU VIES (BYOK): single & bulk runs, stored proof and full audit log per §18e UStG.