Reversal of a Purchase Transaction: The Federal Fiscal Court Clarifies the Requirements for Actual Reversal

In its ruling of January 14, 2026, under case number R 24/23, the Federal Fiscal Court further tightened the criteria for the tax-law recognition of the reversal of an acquisition transaction. The central issue is when a tax event that has already occurred ceases to apply retroactively.

The decision makes it clear that it is not merely the contractual agreement to reverse the transaction that matters. Rather, the decisive factor is whether the original acquisition transaction is in fact completely reversed. In practice, this results in a higher standard of scrutiny when implementing such arrangements.

Summary of the Judgment
The judgment was based on a set of facts in which a transaction that had initially been validly executed was to be rescinded at a later date. The parties had entered into corresponding agreements to this effect and had provided for a reversal of the transaction.

The tax authorities did not recognize this rescission for tax purposes, as they considered the actual implementation to be insufficient. In particular, the original state had not been fully restored.

The Federal Fiscal Court upheld this view. In the court’s opinion, a formal or partial reversal is not sufficient. The decisive factor is whether the legal and economic effects associated with the original acquisition have been completely eliminated.

Key Points of the Ruling
The Federal Fiscal Court clarifies that a reversal recognized for tax purposes exists only if the original state is fully restored. All legal consequences of the acquisition must be eliminated. This applies to both the civil law and economic spheres.

A key criterion is the actual implementation of the reversal. Agreements alone are not sufficient. The retransfer of assets and the return of payments must take place in reality and may not be merely accounted for on paper or in the balance sheet.

Furthermore, the court emphasizes that the rescission must be closely linked in time and substance to the original acquisition. As the time elapsed increases, so do the requirements for proving that the transaction is indeed a rescission and not a new transaction.

The Federal Fiscal Court attaches particular importance to distinguishing this situation from new acquisition transactions. If, in economic terms, a replacement transaction is carried out that takes the place of the original acquisition, this does not constitute a reversal. In this case, separate tax consequences arise.

Practical Implications
The decision has significant implications for tax practice, particularly in the context of corporate restructurings and share transactions. Companies cannot assume that a contractually agreed reversal will automatically be recognized for tax purposes.

Rather, it must be ensured that the reversal is implemented fully and consistently. The original state must be restored both legally and economically. Any remaining discrepancy may result in the tax authorities denying the tax effect.

In practice, risks arise particularly when reversals are only partial or are economically replaced by other arrangements. Complex transaction structures also increase the risk that individual elements will not be fully reversed.

Against this backdrop, careful planning and support from tax advisors become significantly more important. Even when drafting contracts, care should be taken to ensure that, in case of doubt, a subsequent reversal can actually be fully implemented. Equally important is comprehensive documentation of the measures taken in order to be able to prove their actual implementation to the tax authorities.

Conclusion
The ruling by the Federal Fiscal Court makes it clear that strict requirements apply to the tax-law recognition of the reversal of an acquisition transaction. The decisive factor is that the reversal must be complete and actually carried out.

In practice, this means that reversals must be prepared and implemented with particular care. Companies should seek tax advice on such measures at an early stage and ensure they are carried out consistently. Otherwise, there is a risk of unexpected tax liabilities that often cannot be corrected retroactively.