In a case decided by the Supreme Tax Court, an application submitted to the Portuguese tax authorities before 1 April 2020 led to a ten-year tax exemption of the pension income for a taxpayer who had permanently moved to Portugal However, in order to prevent a double non-taxation in such cases Germany has agreed a subject-to-tax clause with Portugal if such income is not taxed in Portugal.
An employer's certificate is sufficient for the proof of taxation of wages in India in order to claim tax exemption under the relevant terms of the Double Tax Treaty between Germany and India. The submission of an official income tax assessment notice is not mandatory for claiming the exemption under the subject-to-tax clause of the German Income Tax Act.