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Errors in cash register management occur frequently. Whether—and to what extent—such errors justify an upward estimate of revenue depends on the specific circumstances of the case.

I. Typical formal deficiencies

• Missing or incomplete Z-reports (end-of-day totals) for electronic cash registers, or missing daily cash reports for open cash drawers (manual tills), particularly in cash-intensive businesses (gastronomy, snack bars, retail)
• Missing programming logs and organizational documentation (operating manuals, documentation of program changes) for electronic POS systems
• Inability to verify cash balances (cash counts): daily cash receipts/expenditures not recorded promptly, chronologically, or individually; negative cash balances or cash shortages indicating inaccuracies in cash records
• Recording of totals without underlying source records: e.g., only handwritten daily lists without register tapes or receipts
• POS systems susceptible to manipulation without adequate safeguards and without additional, voluntary record-keeping measures
• Improper documentation of cancellations or subsequent reversals:

II. Typical substantive deficiencies

• Unrecorded cash receipts (undisclosed cash funds, dual cash-keeping systems)
• Implausible cash balances and cash shortages (negative balances, unexplained cash deposits)
• Manipulated cash receipts/Z-reports combined with the absence of fiscal memory or the lack of immutable storage for individual transaction data

III. Consequences under tax law

In cash-intensive businesses (gastronomy, snack bars, retail, vending machine operators), deficiencies in cash management can compromise the integrity of the entire accounting system; the accounts may be rejected, and the tax base may be determined—in part—through a comprehensive estimate. This results in upward adjustments to reported revenue based on internal or external business comparisons, standard rate comparisons, time-series analyses, gross profit markups, and safety margins.

IV. Criminal Law Risks

Significant deficiencies in cash record-keeping—resulting in substantial portions of cash receipts failing to appear in the accounting records and tax returns—regularly give rise to a suspicion of tax evasion.

Violations of recording and record-retention obligations (e.g., missing programming logs, missing operating manuals, missing cash reports) may be penalized as tax-related administrative offenses under Section 379 of the Fiscal Code (AO).

Contact us: kanzlei@wild.legal