Germany: Treaty override under constitutional attack again

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2025

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Germany: Treaty override under constitutional attack again

petra.jpg

muscheites.jpg

Petra Peitz-Ziemann


Erik Muscheites

The treaty override provisions of the Income Tax Act make an exemption of, among others, employment income conditional on full taxation or conscious waiver of taxation in the other state. However, exemption from taxation in the other state by reason of non-resident status there or qualification conflict on the type of income is not a conscious waiver. This latter tightening in the law was introduced in 2013 but with retroactive effect as it was a mere "clarification" of a previously "unclear" legal provision. However, the Supreme Tax Court had already ruled – before this clarification – that the treaty override was, unless specifically provided for in the treaty, in breach of the treaty and therefore of international law. As such it was unconstitutional. That case concerned a German resident pilot of an Irish airline whose salary was exempt in Germany under the aircrew provision of the treaty and exempt in Ireland in the hands of a non-resident (Irish law has since been changed for non-resident aircrew). The court laid the question before the Constitutional Court, which has not yet responded. The Supreme Tax Court has now heard a further case on the same issue, brought, again, by a German resident pilot of an Irish airline. On October 15, it published its resolution to lay again the same question before the Constitutional Court. This time, though, it now has occasion to call the retroactive application of the 2013 clarification into constitutional question. It sees the change as a change in substance to the disadvantage of taxpayers affected. As such, it cannot be applied retroactively.

As further cases on the constitutional position of unilateral treaty override clauses are pending, we recommend those affected to appeal against their tax assessment notices. If nothing else, this will serve to keep their positions open until the Constitutional Court has handed down a ruling.

Petra Peitz-Ziemann (petra.peitz-ziemann@de.pwc.com) and Erik Muscheites (erik.muscheites@de.pwc.com)

PwC

Tel: +49 69 9585 6586 and +49 69 9585 3628

Website: www.pwc.de

more across site & shared bottom lb ros

More from across our site

Imposing the tax on virtual assets is a measure that appears to have no legal, economic or statistical basis, one expert told ITR
The EU has seemingly capitulated to the US’s ‘side-by-side’ demands. This may be a win for the US, but the uncertainty has only just begun for pillar two
The £7.4m buyout marks MHA’s latest acquisition since listing on the London Stock Exchange earlier this year
ITR’s most prolific stories of the year charted public pillar two spats, the continued fallout from the PwC Australia tax leaks scandal, and a headline tax fraud trial
The climbdowns pave the way for a side-by-side deal to be concluded this week, as per the US Treasury secretary’s expectation; in other news, Taft added a 10-partner tax team
A vote to be held in 2026 could create Hogan Lovells Cadwalader, a $3.6bn giant with 3,100 lawyers across the Americas, EMEA and Asia Pacific
Foreign companies operating in Libya face source-based taxation even without a local presence. Multinationals must understand compliance obligations, withholding risks, and treaty relief to avoid costly surprises
Hotel La Tour had argued that VAT should be recoverable as a result of proceeds being used for a taxable business activity
Tax professionals are still going to be needed, but AI will make it easier than starting from zero, EY’s global tax disputes leader Luis Coronado tells ITR
AI and assisting clients with navigating global tax reform contributed to the uptick in turnover, the firm said
Gift this article