Integration from Day 1: Accounting as a Transaction Factor

In corporate transactions, the focus is usually on legal structuring, tax optimization and financial valuation. Accounting, however, is often only addressed during the post-merger process – which is often too late. Successful integration requires prepared and strategically embedded accounting.

The term “accounting design” refers to the structured preparation and harmonization of accounting-related processes, systems and valuation principles before and around a transaction. It is key to ensuring management capability from Day 1.

Accounting as an early indicator in the due diligence process

Typical weaknesses often become apparent already during financial due diligence, extending far beyond purely technical deficiencies:

• Inconsistent valuation approaches (e.g., inventory valuation, provisions, IFRS deviations)
• Lack of standardized processes for intercompany reconciliations
• Discontinuities between accounting, reporting and consolidation systems
• Fragmented ERP systems without a uniform data architecture

These aspects directly affect the reliability of management information and complicate integration into group structures.

Harmonization before closing – not afterwards

A professionally designed accounting framework creates clarity even before signing in connection with:

• Accounting and valuation methods (e.g., under Art. 253–256a of the German Commercial Code (HGB), IFRS 15/16)
• Requirements for charts of accounts, cost object structures and reporting lines
• System compatibility in consolidation and tax reconciliation
• Interfaces between accounting, tax and legal functions

Differences between HGB and IFRS – for example, in the treatment of deferred taxes (Art. 274 HGB, IAS 12) or lease arrangements (IFRS 16) – must be considered, as well as tax-relevant valuation issues (including Art. 6(1) of the German Income Tax Act (EStG)).

A structured accounting setup also facilitates the implementation of intra-group transfer pricing (TP policy) and creates clear conditions for accounting in compliance with the GoBD (German Principles for the Proper Maintenance and Retention of Books, Records and Documents in Electronic Form and for Data Access), in accordance with the German Federal Ministry of Finance (BMF) guidance of November 28, 2019 and March 11, 2024.

Post-merger accounting: management without delay

Immediately after closing, a number of operational requirements arise:

• Integration into the consolidated financial statement preparation
• Availability of tax-relevant accounting information
• Timely preparation of monthly and quarterly financial statements
• Mapping of internal performance indicators (EBITDA, working capital, KPI sets)

A lack of alignment in the accounting structure can quickly lead to critical inefficiencies, for example, due to manual reconciliations, time-sensitive follow-up questions regarding tax accruals, or unreliable data sources in reporting.

Particularly in cross-border transactions involving a German subsidiary, additional challenges arise with respect to VAT law, transfer pricing documentation (Art.  90(3) of the German Fiscal Code – AO), and compliance with statutory bookkeeping obligations under commercial law (Art. 238 HGB).

Accounting as a strategic management function in the transaction process

In M&A practice, accounting is gaining importance – not as a follow-up process, but as a structuring element of integration.

A robust accounting design:

• ensures compliance and alignment with tax and commercial law requirements,
• creates a reliable basis for management decision,
• reduces integration costs through standardization,
• increases transparency for auditors, tax authorities and investors.

Thus, accounting becomes the infrastructure of strategic management – not only after the transaction, but from the very first planning stage.