Field help: (2021) Is there a mark aG in the severely disabled pass? This text refers to the Steuererklärung 2021. You can find the version for the Steuererklärung 2025 at: (2025): Is there a mark aG in the severely disabled pass? Select "yes" if there is a mark "aG" in the disability ID card which stands for "exceptionally disabled (mobility)".As proof, please submit the following documents to the tax office if you have not submitted them in previous years:disability card orpension approval notice from the social services officestatement from the care insurance fund (for nursing care level (Pflegegrad) 4 or 5)Based on this information, SteuerGo determines the disability allowance.