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Federal Ministry of Finance Circular DTA income: changes since 2025
Tax – global mobility services

Federal Ministry of Finance Circular DTA income: changes since 2025

In its Circular of 19 December 2025, the German Ministry of Finance updated its Circular of 12 December 2023 (BStBl. I 2023, p. 2179) on the tax treatment of employment income under double taxation agreements (DTAs). Note: The paragraph numbers below refer to this Circular.
Heike Bathke
Stephanie Tigges
| 7 min read |
The struggle regarding partially remunerated transfers under Sect. 6(5) sent. 3 of the Income Tax Act
Ruling by the German Federal Fiscal Court

The struggle regarding partially remunerated transfers under Sect. 6(5) sent. 3 of the Income Tax Act

The partially remunerated transfer of individual assets has recently caused a stir, particularly in the area of privately held tax assets. This is where the "strict separation theory" applies, according to which, for the purpose of determining the profit from a private sale (e.g., Sect. 23 of the Income Tax Act), a division into a fully remunerated and a fully non-remunerated part is made according to the ratio of the consideration to the market value of the transferred asset (Judgment of the Federal Tax Court dated March 11, 2025, file number IX R 17/24). In the area of taxable business assets, there is still uncertainty regarding this issue, which the fourth chamber of the Federal Tax Court has now decided in favor of the "modified separation theory."
Dr Martin Weiss
| 7 min read |
Income tax deduction prohibitions and deduction restrictions are becoming prevalent
Ruling by the German Federal Fiscal Court

Income tax deduction prohibitions and deduction restrictions are becoming prevalent

Prohibitions and restrictions on deductions for business expenses can be found in numerous provisions in German tax law. In particular, Sect. 4 et seqq. of the German Income Tax Act contain comprehensive prohibitions on deductions, although Sect. 4g of the Income Tax Act also includes "unsystematic" provisions to mitigate immediate taxation. However, the vast majority of provisions restrict the deduction of business expenses. Sect. 4k of the Income Tax Act, for example, contains a very comprehensive prohibition on deductions, induced by EU law, for expenses that are related in the broadest sense to "tax incongruities" between countries. The "license barrier" of Sect. 4j of the Income Tax Act, on the other hand, has been abolished with effect from the 2025 assessment period (Sect. 52(8c) sent. 3 of the Income Tax Act). For other provisions – such as Sect. 4i of the Income Tax Act covering special operating expenses in a cross-border context – repeal is only being discussed at this stage. The Federal Fiscal Court has now ruled again on the first applicability of Sect. 4f of the Income Tax Act ("assumption of obligations").
Dr Martin Weiss
| 6 min read |
Selecting international service providers – avoid typical mistakes
Advisory | International business services

Selecting international service providers – avoid typical mistakes

Collaborating with international service providers is often more complex than it seems at first glance. Typical mistakes in the selection process can lead to delays, compliance risks and significant follow-up costs. This article highlights the pitfalls companies should avoid and the key criteria that determine how to successfully select an international service provider and ensure long-term success of your projects.
Lars Korte
| 3 min read |
Reimbursement interest on trade tax is taxable
Ruling by the German Federal Fiscal Court

Reimbursement interest on trade tax is taxable

Sect. 233a(1) sent. 1 of the General Fiscal Code (“Abgabenordnung”) specifies a canon of taxes on which reimbursement interest is payable – these taxes include the German trade tax. If a business receives such reimbursement interest, the question arises whether it must in turn pay tax on it as business income. Income taxes are then deducted from the 1.8 per-cent “credit interest” (Sect. 238(1a) General Fiscal Code), resulting in an “imbalance”: Debit interest under Sect. 233a General Fiscal Code is not deductible from income taxes as an ancillary tax payment (“steuerliche Nebenleistung”; Sect. 3(4) no. 4 General Fiscal Code; Sect. 4(5b) Income Tax Act), but credit interest is fully taxable. The German Federal Fiscal Court has now confirmed this treatment for the trade tax (file number IV R 16/23).
Dr Martin Weiss
| 6 min read |

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Grant Thornton Germany wins Martin Biegel for the new position of CFO/COO

Martin Biegel joined the Senior Leadership Team of the audit and advisory firm Grant Thornton Germany in February as the new Chief Financial Officer/Chief Operating Officer (CFO/COO) and in this role will actively help drive the firm’s strategic development.

13 Oct 2025

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The Equity Partners of Grant Thornton AG Wirtschaftsprüfungsgesellschaft (“Grant Thornton Germany”) have approved the strategic partnership with international private equity firm Cinven. This marks a key milestone for the transaction initially announced on 10 September 2025, which is expected to close in the first quarter of 2026. The partnership further strengthens Grant Thornton Germany’s position as a leading, trusted service provider in the German audit and advisory market, ushering in its next phase of growth.

17 Feb 2025

Financial year 2023/24 – Grant Thornton Germany again shows double-digit growth

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