According to the new regulation of sec. 14 para. 4 sentence 4 of the German VAT Act. , the correction of an invoice for missing or incorrect information does not constitute an event with retroactive effect within the meaning of sec. 175 para. 1 sentence 1 no. 2 of the German General Fiscal Code and sec. 233a para. 2a of the German General Fiscal Code. The retroactive effect of an invoice correction applying to periods of assessment, which have already expired, can thus lead to a permanent loss of input VAT deduction in individual cases. In addition, the regulation also has an impact on interest on late payments and refunds. Unfortunately the new regulation doesn’t go far enough.