With numerous resolutions – including the one of 31.05.1990 (2 BvL 12, 13/88) – the Federal Constitutional Court (BVerfG) has taken a stand on the prohibition of excessive amounts in tax law. Such over-taxation is then regularly assumed if the tax burden exceeds significantly more than 50 %. By applying the trade tax to the income tax according to § 35 EStG, the legislature counters such an unconstitutional excess.

Especially as an entrepreneur you sometimes already move with the income tax in the top tax rate of up to 45 %. With solidarity surcharge and church tax, for example, a taxable income of EUR 300,000 results in a burden of EUR 134,340. We calculated for the federal state of North Rhine-Westphalia (9% church tax) and the case of the individual assessment. The tax burden is 44.78%, but increases with identical factors and higher income up to 48.47%.

Without the possibility of applying the trade tax, this burden would increase by a further 15% on average throughout Germany. Accordingly, there would be a clear violation of the BVerfG standardized overmass prohibition in tax law.

According to § 35 (1) sentence 1 EStG, a crediting of business tax to income tax is possible if and to the extent