Germany: German Federal Tax Court questions constitutionality of interest deduction limitation rule

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

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

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

Germany: German Federal Tax Court questions constitutionality of interest deduction limitation rule

Linn
Braun

Alexander Linn

Thorsten Braun

Germany's Federal Tax Court (BFH) referred a case to the Federal Constitutional Court (BVerfG) on February 10 2016 requesting a ruling on whether the interest deduction limitation rule violates the constitution (case ref. I R 20/15).

Introduced as part of the 2008 corporate tax reform, the rule restricting the deduction of interest applies to both shareholder loans and bank loans (that is, loans from related and unrelated parties). The rule limits the deduction of net interest expense (interest expense exceeding interest income) to 30% of the tax EBITDA. There are very limited exceptions to the rule, and its basic features are reflected in the OECD's BEPS Action 4 ('Limiting Base Erosion Involving Interest Deductions and Other Financial Payments') and in the European Commission's draft proposal for an anti-avoidance directive (COM(2016) 26 final).

The BFH initially expressed its doubts about the constitutionality of the interest deduction limitation rule in a decision issued in 2013 (case ref. I B 85/13 dated December 18 2013). However, the final decision on the constitutionality of the measure must be made by the BVerfG. Until this question is decided – which likely will take a few years – the tax authorities can continue to disallow full interest deductions based on the existing rule. Therefore, tax assessments should be kept open. Although the tax authorities likely will continue to apply the rule, tax assessments may be issued on a preliminary basis that would keep assessments open until the BVerfG issues its decision.

Should the BVerfG rule in favour of the taxpayer, a tax refund would trigger interest at 6% per annum, with the interest period starting 15 months after the relevant fiscal year. However, if the BVerfG determines that the interest deduction limitation rule is in line with the constitution, any preliminary tax assessments would become final.

Alexander Linn (allinn@deloitte.de) and Thorsten Braun (tbraun@deloitte.de)

Deloitte

Tel: +49 89 29036 8558 and +49 69 75695 6444

Website: www.deloitte.de

more across site & shared bottom lb ros

More from across our site

Among the arrivals is Andrew Howell, who leaves scandal-hit PwC Australia after representing PepsiCo in a high-profile TP dispute
ITR's podcast examines whether the big four have overarching cultural issues and assesses the competitive threat of technology-backed transfer pricing firms
The UK advisory firm has seen its global revenues expand by £27.2m following its listing and acquisition of Baker Tilly South-East Europe
Tax-trained John Sams, previously the firm’s CFO and COO, was appointed after a rigorous process, KPMG said
From Mauritius substance rules to Kenyan SEP tax and South African anti-avoidance measures, businesses must navigate growing scrutiny of cross-border IP structures in Africa
ITR spoke to multinationals, advisers and software providers about a June 30 deadline defined by faulty portals, high compliance costs and hard lessons
After years of onerous pillar two prep, businesses will be galled in seeing tax revenues outweighed by compliance costs
Tax advisers should revisit India secondment arrangements after the EY US ruling strengthened the Centrica precedent and raised fresh withholding concerns
Despite the shortfall, effective tax rates of multinationals have seen a ‘statistically significant rise’
After joining Milbank from Akin Gump, the fund tax specialist discusses sponsor demand, practice building, and the tax challenges facing asset managers
Gift this article