Tax Audit in Hospitality: What the Tax Office Checks and How to Prepare

The hospitality industry is regarded by the German tax authorities as a high-risk sector. The reason: a high proportion of cash transactions, complex goods flows and a historically documented susceptibility to unrecorded revenue. Whilst other industries are audited every three to five years, hospitality businesses can find themselves on the list annually.

Yet many operators are poorly prepared. The cash book is kept carelessly, voids are missing from the documentation and the cost of goods deviates from industry benchmarks without a plausible explanation. This article shows how a tax audit actually works, which errors auditors find most frequently – and which concrete measures protect hospitality operators.

Why hospitality businesses are audited particularly often

The central factor is the proportion of cash payments. Even though card payments are increasing, the cash share in German hospitality still stands at around 40–60%. For the tax office this means: a higher manipulation risk than in sectors with exclusively cashless payments. Additional risk factors include:

• POS systems without TSE: The technical security device (TSE) has been compulsory since 2020. Since July 2025 there is also a reporting obligation for electronic POS systems (§ 146a para. 4 AO). Missing reports count as an administrative offence.
• GoBD violations: The principles for the proper keeping and storage of books require complete, correct, timely and orderly records (§ 146 para. 1 AO). In practice this means: every transaction, every void and every cash withdrawal must be documented.
• Conspicuous tax returns: Unusual cost-of-goods ratios, strongly fluctuating revenues or a lack of plausibility between purchasing and revenue trigger the tax administration’s risk-management system.

How a tax audit in hospitality works

The tax audit follows a standardised procedure – no reason for panic if you know what to expect:

1. Audit order: The tax office announces the audit in writing, usually two to four weeks in advance. The order states the audit period (typically three years) and the items to be audited.
2. Request for documents: Before the first on-site visit, the auditor requests digital data: GDPdU exports from the accounting system, POS data, goods-purchase invoices, Z-reports and the procedural documentation for the POS system.
3. Access to digital data: The auditor uses analysis software (IDEA or ACL) to check POS data for completeness, gaps and anomalies. The software contains hospitality-specific audit routines.
4. On-site audit: The auditor appears during business hours, inspects documents, asks questions and cross-checks data. Typical duration: several days to a few weeks.
5. Audit report: The process concludes with a written report containing findings and, where applicable, additional tax demands. An objection can be lodged against the report.

Important distinction: The cash-register inspection under § 146b AO is not a full tax audit but an unannounced check specifically of cash management. Auditors may also conduct test purchases during this inspection. If deficiencies are found, the cash-register inspection can immediately escalate into a full tax audit.

The most common problems during tax audits in hospitality

Tax auditors in hospitality are specialists in this sector. They know the patterns and where to look:

• Incomplete cash management: Missing Z-reports, gaps in receipt numbering, undocumented cash shortfalls. The cash book must be maintained daily using the retrograde method (determine cash balance, then calculate backwards).
• Missing receipts: Every transaction requires a receipt. Since the receipt-issue obligation (§ 146a para. 2 AO) this also applies to hospitality receipts. Missing receipts lead to objections.
• Implausible cost-of-goods ratios: Auditors compare the cost of goods with industry benchmarks. If the cost of goods is 40% but the industry average is 28%, an explanation gap arises. If it is below 20%, this may indicate unrecorded purchases.
• Missing or incomplete inventory data: Auditors calculate the actual cost of goods using the formula opening stock + purchases – closing stock = consumption. Without documented inventories, the business lacks the data to substantiate its cost-of-goods ratio. Particularly critical: businesses that only carry out the legally required annual inventory cannot explain monthly variances.
• Undocumented voids: Voids are normal in hospitality. But every void must be recorded in the POS system promptly, with a reason and traceably. Conspicuously high void rates are treated as an indication of manipulation.
• Implausible revenue structure: The typical ratio is approximately 70% food and 30% beverages. Significant deviations without a plausible explanation (e.g. a pure bar operation) raise doubts.
• Missing procedural documentation: Every electronic POS system requires procedural documentation. If it is absent, that alone constitutes a formal deficiency that can lead to the rejection of the accounting records.

The biggest risk: additional assessment by the tax office

If the accounting records contain formal or substantive deficiencies, the tax office may estimate the tax base under § 162 AO. In practice this means: the auditor calculates the “correct” revenue using industry benchmarks, purchase invoices and statistical methods – and taxes the difference additionally.

For hospitality operators this can quickly become existentially threatening:

• Back-calculation: The auditor uses purchase invoices to calculate how much revenue should have been generated at the usual mark-ups. If the declared revenue is lower, the difference is added.
• Official benchmark tables: The annually published Richtsatzsammlung from the Federal Ministry of Finance contains industry figures for gross-profit mark-ups. If a business deviates significantly, this provides the auditor with the basis for an estimate.
• Consequence: Additional assessments affect not only income tax but also VAT and trade tax – each with interest. In serious cases, criminal tax proceedings follow.

How hospitality operators can prepare properly

Audit-readiness is not created in the week before the auditor’s visit but in day-to-day operations. The key measures:

Daily cash count and Z-report

Every evening: count the cash balance, reconcile with the Z-report, document and explain any differences. File Z-reports chronologically or archive them digitally.

Structured receipt filing

Purchase invoices, hospitality receipts, self-generated receipts for cash withdrawals and deposits: everything must be recorded promptly, completely and chronologically. Gaps in receipt numbering are one of the most common triggers for objections.

Clean bookkeeping with correct VAT separation

Since January 2026, food consumed on the premises is again subject to 7% VAT, whilst beverages remain at 19%. The POS system must map this separation correctly, particularly for combination offers and vouchers.

Traceable inventory

A regular inventory is the foundation for plausible cost-of-goods figures. Without inventory data, the business cannot explain to the auditor why the cost of goods deviates from the industry benchmark. Monthly inventories deliver significantly better control data than the legally required annual inventory.

Documentation of voids and operator errors

Every void needs: a timestamp, the responsible employee, a reason and approval by an authorised person. The POS system should log voids automatically.

Documentation of breakage, shrinkage and spoilage

If goods were purchased but not sold, the auditor wants to know why. Without proof, the difference is treated as unrecorded revenue – and added. Three categories must be cleanly documented: breakage (broken bottles, damaged goods), shrinkage (theft, shortfalls, unexplained variances) and spoilage (expired food, cooking losses, spoiled fresh produce). For each category: create a self-generated receipt with date, item, quantity and reason. Ideally, regular inventory data supports the plausibility – those who count monthly can show the auditor that variances are traceable and typical for the industry. DEHOGA cites around 3% shrinkage as a benchmark – if a business is significantly above that, it needs an explanation. With BarBrain, for example, breakage and spoilage can be easily added and thus become part of the inventory data.

Why digital systems reduce audit risk

Digital processes reduce the error rate and create traceability – both lower the risk during a tax audit:

• Automatic logging: Modern POS systems with TSE record every transaction tamper-proof. Voids, discounts and operator changes are documented automatically.
• Digital receipt archiving: GoBD-compliant archiving replaces paper filing and makes receipts instantly searchable – including during the audit.
• Inventory and stock management: Digital inventory tools help control the cost of goods regularly and traceably. Tools like BarBrain or similar enable monthly stock counts that serve as evidence during a tax audit.
• Data export: Digital systems deliver data in GDPdU format, which the auditor can import directly. This speeds up the audit and signals professionalism.

Checklist: is your business ready for a tax audit?

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FAQ – Frequently asked questions

How often are restaurants audited by the tax office?

Hospitality is classified as a high-risk sector and is audited more frequently than other trades. Whilst the standard cycle is three to five years, conspicuous businesses may be audited annually. In addition, an unannounced cash-register inspection (§ 146b AO) can take place at any time.

What happens during a cash-register inspection?

A tax official appears unannounced during business hours, identifies themselves and inspects the cash management: Z-reports, receipts, TSE, procedural documentation. If deficiencies are found, the inspection can immediately and without further notice escalate into a full tax audit. Test purchases may also be made beforehand.

Can the tax office estimate revenues?

Yes. If the accounting records contain formal or substantive deficiencies, the tax office may estimate the tax base under § 162 AO. Typical methods: back-calculation based on purchase invoices or comparison with the Federal Ministry of Finance’s Richtsatzsammlung. The additional tax demand then covers income tax, VAT and trade tax – each with interest.

Which documents must be available during a tax audit?

Complete cash records (Z-reports, journals, void logs), goods-purchase invoices, accounting data in GDPdU format, procedural documentation for the POS system, inventory lists, employment contracts and payroll records. The more complete the documentation, the shorter the audit.

How long does a tax audit in hospitality take?

This depends on the business size and the quality of the documentation. A well-prepared single-site operation can get by with a few audit days. If deficiencies are found, the audit can stretch over weeks. The entire process from audit order to final meeting typically takes three to six months.

Summary

A tax audit in hospitality is not a catastrophe but a routine administrative procedure. Those who close their cash management cleanly every day, archive receipts without gaps, control the cost of goods regularly through inventory and maintain complete procedural documentation have nothing to fear from the audit. The best preparation does not take place in the week before the auditor’s visit – but every day in the business.