Field help: (2018) Date of birth This text refers to the Steuererklärung 2018. You can find the version for the Steuererklärung 2024 at: (2024): Date of birth Enter here the date of birth of the supported person.Regardless of the age of the supported person, maintenance payments in 2018 are tax-deductible up to a maximum of 9.000 Euro (2017: 8.820 Euro).