Income Tax Fiscal Unity in the Focus of the BFH
Income tax fiscal unity remains a central element of group taxation in Germany. It makes it possible to consolidate the results of affiliated companies at the level of the controlling company and to take profits and losses within the fiscal unity group into account across separate legal entities. The basis is, in particular, § 14 KStG (German Corporate Income Tax Act), § 17 KStG (German Corporate Income Tax Act) and § 2 para. 2 sentence 2 GewStG (German Trade Tax Act).
The I. Senat des Bundesfinanzhofs (First Senate of the BFH, Federal Fiscal Court) further specified the requirements for the actual implementation of a profit transfer agreement in its judgment of 05.11.2025 – I R 37/22, officially published on 12.03.2026. According to the decision, it is not sufficient merely to record claims arising from a profit transfer agreement in the accounts. Claims that are due under civil law must, as a rule, be fulfilled within twelve months of their due date.
The decision concerns the disputed years 2009 to 2011 and the existence of a fiscal unity for corporate income tax and trade tax purposes. It has attracted considerable attention in group tax departments because the scope of the judgment’s principles for existing fiscal unity arrangements and past assessment periods has not yet been conclusively clarified.
Fundamentals of Income Tax Fiscal Unity
Requirements under § 14 KStG
An income tax fiscal unity requires several conditions to be met cumulatively. These include, in particular:
- the financial integration of the controlled company into the controlling company through a majority of voting rights,
- the conclusion of a valid profit transfer agreement within the meaning of § 291 para. 1 AktG (German Stock Corporation Act),
- a minimum term of the profit transfer agreement of five years,
- the actual implementation of the profit transfer agreement throughout its entire term.
The controlled company can only be a corporation whose place of management is located in Germany and whose registered office is in a Member State of the European Union or of the European Economic Area. In particular, non-tax-exempt corporations, natural persons with a commercial business and partnerships may qualify as controlling companies, provided that they generate original commercial income.
Significance of the Profit Transfer Agreement
The profit transfer agreement results in the profits of the controlled company being transferred to the controlling company on the basis of the contractual obligation. Where financial years coincide, the profit transfer is made for the year in which the profit arises, without a separate resolution on the appropriation of profits by the controlled company being required.
At the same time, the controlling company’s obligation to assume losses ensures that no loss remains with the controlled company. For tax purposes, the income of the controlled company is attributed to the controlling company. As a result, no profit distributions occur within the fiscal unity group; the recognition of deemed non-deductible business expenses amounting to 5 percent of the dividends does not apply.
As an intercompany agreement, the profit transfer agreement is subject to strict form and approval requirements under § 291 para. 1 sentence 1 AktG. For tax purposes, the fiscal unity is recognized only if the agreement has a term of at least five years and is actually implemented throughout its entire term.
Actual Implementation of the Profit Transfer Agreement
Two Components of Contract Implementation
According to case law, the actual implementation of a profit transfer agreement comprises two elements. First, the obligations to transfer profits or compensate losses arising from the agreement must be recorded and recognized in the annual financial statements of the controlling company and the controlled company. Second, the claims must actually be fulfilled.
Fulfilment may take place by payment. Fulfilment substitutes may also be considered, such as set-off, netting or novation. By contrast, the mere entry of a receivable without fulfilment effect is not sufficient.
The first guiding principle of the BFH judgment I R 37/22 confirms in this respect the earlier decision of the BFH (Federal Fiscal Court) of 02.11.2022 – I R 37/19. Accordingly, implementation additionally requires that receivables and liabilities arising from the profit transfer agreement be recorded in the annual financial statements.
Dispute over the Time Limit for Fulfilment
Before the decision of 05.11.2025, it was disputed within what period claims arising from a profit transfer agreement must be fulfilled. In some cases, fulfilment immediately after the due date was generally required. In others, it was assumed that fulfilment within a reasonable period after termination of the fiscal unity could also suffice. A further view focused on a reasonable period after adoption of the annual financial statements or after maturity.
The BFH has adopted the latter line, albeit with a clear temporal benchmark. Accordingly, fulfilment within twelve months of the due date is generally sufficient.
BFH Judgment of 05.11.2025 – I R 37/22
Facts of the Proceedings
The claimant was a GmbH (German limited liability company). In 2002, as the controlled company, it had concluded a profit transfer agreement with the sole proprietorship of its sole shareholder as the controlling company. The agreement was entered in the Handelsregister (Commercial Register) in 2003 and could first be terminated as of 31.12.2007.
The profits to be transferred were recorded cumulatively by the claimant in the account “liabilities to shareholders”. In addition to the profit transfer amounts, only the interest attributable to them was recorded in this account. Counterclaims or lump-sum payments were not recorded there.
For the disputed years 2009 to 2011, the claimant initially made payments in the name of the controlling company to a Kommanditgesellschaft (KG, German limited partnership) with which the controlling company had incurred liabilities. However, the limited partnership did not treat these payments in a loan schedule as repayments by the controlling company. It was not until 2017 that the controlling company’s profit transfer claims against the claimant were set off against counterclaims of the claimant against the controlling company.
Course of Proceedings up to the BFH
The Finanzamt (tax office) followed the findings of a tax audit. It issued amended corporate income tax assessments and initial trade tax assessment notices for the years 2009 to 2011 dated 20.03.2017. The decision on the objection was dated 01.06.2018.
The Finanzgericht Köln (Cologne Fiscal Court) dismissed the action by judgment of 21.06.2022 – 10 K 1406/18. The BFH dismissed the claimant’s appeal on points of law as unfounded. The claimant bears the costs of the appeal proceedings.
BFH Decision on Accounting Recognition
Regarding the accounting component, the BFH clarified that the claims arising from the profit transfer agreement must be recorded. In the specific case, the cumulative presentation of the profit transfer liabilities to the shareholder was sufficient. A separate disclosure of the individual transfer amounts was not required.
Thus, the first component of actual implementation was fulfilled in the case in dispute. However, the tax recognition of the fiscal unity failed due to the second component, namely the timely actual fulfilment of the claims.
BFH Decision on the Fulfilment Period
The BFH held that claims resulting from the profit transfer agreement and due under civil law must be fulfilled promptly. In principle, fulfilment within twelve months of the due date is sufficient for this purpose.
In its reasoning, the BFH referred, among other things, to the rationale of § 355 para. 2 HGB (German Commercial Code) for current account relationships, according to which a statement of account is generally provided after twelve months. In addition, the BFH stated that a significantly broader framework for fulfilment could in practice grant taxpayers an unlimited right of choice in terms of time to retroactively destroy a fiscal unity. Such a right of choice cannot be derived from the law.
In the case in dispute, the BFH took the view that there had been no timely fulfilment. The set-off took place only in 2017 and thus several years after the profit transfer claims had become due. A mere entry in the liability account had no fulfilment effect.
Classification of the Twelve-Month Period
General Rule with Room for Special Cases
The twelve-month period referred to by the BFH expressly applies “as a general rule”. This does not preclude a different assessment in atypical situations. However, the facts decided did not give the BFH any reason to develop more detailed criteria for harmless breaches of the period.
The breach of the time limit in proceedings I R 37/22 was substantial. Because of the significant overrun, the BFH saw no indications in the case in dispute of minor irregularities that could be harmless for recognition of the fiscal unity, without specifying up to what extent such an overrun may be harmless. It also remained open under what conditions special circumstances could justify delayed fulfilment of due claims.
Practical Stringency Where Claims Become Due Early
For many fiscal unity arrangements, the twelve-month period may represent a significant tightening. Particularly relevant are profit transfer agreements under which claims become due already as of the balance sheet date and not only upon preparation or adoption of the annual financial statements.
In group structures shaped by medium-sized businesses, the annual financial statements of the controlled company are not infrequently adopted only after more than twelve months have elapsed since the balance sheet date. In such cases, the period may already have expired before the parties conclusively determine the amount of the profit transfer on the basis of the adopted financial statements.
Clearing Account, Set-off and Novation
Mere Booking Is Not Sufficient
The BFH confirmed that a mere booking without fulfilment effect is not sufficient. In this context, the term netting is not to be understood as a purely accounting process. Rather, a set-off equivalent to payment or another legally effective form of fulfilment is required.
In the case in dispute, no counterclaims of the controlling company were recorded in the liability account vis-à-vis the shareholder. The BFH therefore saw, at most, a non-genuine clearing account. Nor had this been converted by a statement of account into an abstract acknowledgement of debt or into a loan.
Genuine Clearing Account May Be Sufficient
At the same time, it is significant that the BFH did not rule out fulfilment via a genuine clearing account. For this purpose, the receivables and liabilities recorded in the account must be extinguished under civil law.
An obligation under a profit transfer agreement can therefore be fulfilled not only by payment. Fulfilment substitutes such as set-off, netting against other receivables and liabilities, or novation may also be considered. Conversion into a loan receivable may therefore be sufficient for the implementation of the profit transfer agreement if the further requirements are met.
In this context, the recoverability of the claim relied on for set-off remains particularly decisive. Satisfaction by a third-party creditor or settlement via cash-pooling systems may also be considered in principle, provided that actual fulfilment is effected.
Reaction of the Tax Authorities Not Yet Conclusively Clarified
Legitimate Expectations and Temporal Application
At the time of the assessment described in the original article, there had not yet been any official statement by the tax authorities on the application of the BFH judgment I R 37/22. In view of the long-open legal question and the tightening effect for many cases, it was suggested that the principles of the judgment should, for a limited period, not be applied to past cases.
A key point of reference for a possible application rule or protection of legitimate expectations is, in particular, the official publication of the judgment on 12.03.2026. It is being discussed whether the principles should apply only to assessment periods after publication in the Bundessteuerblatt (Federal Tax Gazette).
The Institut der Wirtschaftsprüfer (IDW, Institute of Public Auditors in Germany) addressed a letter dated 17.04.2026 to the Bundesministerium der Finanzen (BMF, Federal Ministry of Finance). Among other things, it suggested clarifying that the twelve-month period begins with the actual adoption of the annual financial statements, provided that no different dates have been agreed.
Further Open Points
From a practical perspective, clarifications on several points would be important. These include in particular:
- how to deal with minor overruns of the twelve-month period,
- the treatment of special circumstances that lead to delays in fulfilling due claims,
- the recognition of advance payments as actual implementation,
- the question of whether exceeding the twelve-month period in the final settlement can be harmless,
- the application of the fulfilment period in cases of incorrect profit transfers and subsequent corrections.
For accounting errors that lead to an incorrect profit transfer, § 14 para. 1 sentence 1 no. 3 sentence 4 KStG contains a remedial provision in the form of a deemed implementation rule. For the transfer or settlement of a correction amount, it also appears reasonable to apply a fulfilment period. According to the view taken in the original article, the start of this period should be linked to the actual adoption of the corrected annual financial statements.
BMF Letter of 17.07.2026
The Bundesministerium der Finanzen issued a letter dated 17.07.2026 commenting on corporate income tax fiscal unity. The letter concerns in particular the minimum term of the profit transfer agreement and partnerships as controlling companies, and replaces the BMF letter of 10.11.2005. It was published on 22.07.2026.
This letter must be distinguished from the BFH decision addressed here on the actual implementation of a profit transfer agreement. Insofar as the specific consequences of decision I R 37/22 for the twelve-month period and its application to existing fiscal unity arrangements are concerned, a clear classification by the tax authorities remains of particular importance.
Effects on Existing Fiscal Unity Arrangements
Risks for Past Assessment Periods
The BFH decision may have significant consequences for existing fiscal unity arrangements. In practice, claims under profit transfer agreements were in the past sometimes fulfilled only after more than one year had elapsed since maturity. This was also due to differing views in the literature and, in some cases, a more generous approach in tax audits.
For past assessment periods that are not yet time-barred, the question therefore arises whether the fiscal unity is still to be recognized for tax purposes. The IDW has rightly suggested clarifying that there is no duty to correct under § 153 para. 1 AO (German Fiscal Code).
Consequences of a Defect in Implementation
A defect in implementation can have particularly far-reaching significance during the first five years of the profit transfer agreement’s effectiveness. If non-implementation is assumed during this period, this can lead to retroactive non-recognition of the fiscal unity for tax purposes from the outset. Subject to procedural law limits, subsequent proper implementation would then not automatically establish a fiscal unity eligible for recognition.
If the defect in implementation occurs only in a later year after expiry of the minimum term, the fiscal unity remains recognized at least until the defect first occurs. For the year of the defect, subject to procedural law limits, there may be a fiscal unity interruption.
According to a highly controversial view of the tax authorities, a fiscal unity does not automatically revive after the defect has been remedied. Rather, a new five-year minimum term and implementation of the profit transfer agreement during this period are required. Since agreements that have already been implemented for a minimum term generally do not provide for a renewed minimum term, the question may arise whether a new conclusion or an amendment of the profit transfer agreement could be necessary.
Further BFH Proceedings Pending on Fiscal Unity
Further appeal proceedings are pending before the BFH that are expected to provide additional clarification. In proceedings I R 18/23, an oral hearing was scheduled for 14.10.2026. The lower court, the Finanzgericht Nürnberg (Nuremberg Fiscal Court), had regarded non-implementation of the profit transfer agreement in 2012 as harmless for recognition of the fiscal unity in the years 2013 to 2017 because, according to its interpretation, the agreement in question could be terminated at the earliest as of 31.12.2017.
In addition, appeal proceedings I R 18/25 and I R 19/25 are pending before the BFH. They are directed against decisions of the Finanzgericht Berlin-Brandenburg (Berlin-Brandenburg Fiscal Court). The subject matter is the question of whether a fiscal unity is to be recognized for the disputed year 2020 if a profit transfer agreement concluded for the years 2019 to 2023 was not actually implemented in 2019 and an adjustment of the minimum term to the years 2020 to 2024 was made only in 2023.
The Finanzgericht Berlin-Brandenburg upheld the actions brought in each case. Since the appeal proceedings are pending, the further outcome remains open. Final clarification is reserved for the decisions of the BFH.
Frequently Asked Questions
BFH I R 37/22: When is a profit transfer agreement actually implemented?
According to the BFH, actual implementation requires that receivables and liabilities arising from the profit transfer agreement be recorded in the annual financial statements and that claims due under civil law be actually fulfilled. As a general rule, fulfilment within twelve months of the due date is sufficient.
§ 14 KStG fiscal unity: Is booking to a clearing account sufficient?
A mere booking without fulfilment effect is not sufficient. However, a genuine clearing account may suffice if it results in the receivables and liabilities being extinguished under civil law.
BFH judgment on the twelve-month period: What practical consequences does this have for companies?
Companies with existing fiscal unity arrangements may be affected if profit transfer or loss compensation claims were fulfilled only more than twelve months after maturity. The tax consequences depend in particular on the timing of a possible defect in implementation, the minimum term of the agreement and procedural law limits.
Tax Law Assessment by MTR Legal Rechtsanwälte
The BFH judgment I R 37/22 makes clear that the tax recognition of a fiscal unity depends not only on effective contractual structuring, but also on the ongoing actual implementation of the profit transfer agreement. Particularly in group structures, clearing accounts, cash pooling and subsequent corrections, complex issues of classification may arise whose tax implications can be considerable.
MTR Legal Rechtsanwälte advises companies, investors and high-net-worth private individuals on issues relating to income tax fiscal unity and related matters of corporate taxation; further information can be found under Legal advice in tax law.
