Betriebsprüfung (Tax audit)

A Betriebsprüfung is a tax audit by the German tax authority (Finanzamt or Bundeszentralamt für Steuern for larger taxpayers). For a watch dealer it typically covers three to four consecutive years of operations and reviews bookkeeping, invoices, cash records, VAT returns, and income-tax filings against statutory requirements.

When a Betriebsprüfung is triggered

Three pathways:

• Anschluss-Betriebsprüfung (scheduled). Some sectors are audited on a rolling cycle. Larger watch dealers (revenue above the Größenklasse thresholds for Mittelbetriebe) are audited every 4 to 6 years on average.
• Anlass-Betriebsprüfung (event-triggered). Suspicious indicators such as repeated late filings, sharp margin declines, or a Verdachtsmeldung from another agency can trigger an audit outside the cycle.
• Umsatzsteuer-Sonderprüfung (VAT special audit). A narrower audit focused on VAT specifically, often triggered by anomalies in Umsatzsteuer-Voranmeldungen or VIES system flags on intra-community transactions.

What auditors look at in a watch-dealer audit

• Bookkeeping completeness and timeliness against GoBD.
• Cash records. The Kassenbuch is reviewed line by line; gaps and round numbers attract questions.
• Margin-scheme treatment. Every § 25a invoice is checked against the corresponding Ankaufsrechnung to verify the margin computation.
• Cross-border documentation. Intra-community supplies must have Gelangensbestätigung; exports must have ATLAS confirmation.
• Inventory valuation at year-end versus declared cost.
• Cost basis on resold watches must be the documented acquisition cost, not an estimated figure.
• GwG records (identification documents for cash transactions over €10,000).

Standard findings and consequences

• Bookkeeping deficiencies under GoBD can lead to Schätzung (estimated taxation), generally unfavourable to the dealer.
• VAT under-reporting triggers back-tax assessment plus 6 percent annual interest under § 233a AO.
• Missing cross-border proof retroactively turns VAT-exempt sales into taxable sales — a serious financial hit for dealers with significant export volume.
• Margin-scheme errors can flip transactions from § 25a to Regelbesteuerung retroactively, with the VAT becoming due.
• Tax-evasion (Steuerhinterziehung) findings can trigger criminal proceedings under § 370 AO. The threshold for criminal investigation is partly determined by the Bußgeldstelle's assessment of intent.

Practical preparation

• Day-by-day Kassenbuch with same-day entries.
• All invoices archived as E-Rechnung-compliant electronic copies for 10 years.
• All Ankaufsrechnungen signed and matched to the eventual margin-scheme sale invoice.
• Verfahrensdokumentation describing how invoicing, bookkeeping, and cash management work in the business.
• Tax advisor (Steuerberater) engaged for the audit. Most German dealers do not represent themselves; the cost of the advisor is dwarfed by the cost of weak representation.

A well-prepared dealer can close most Betriebsprüfungen without significant adjustments. A poorly prepared dealer can lose months of operating time and significant tax dollars.

Related: gobd, kassenbuch, differenzbesteuerung, e-rechnung.