Field help: (2021) Time period This text refers to the Online Steuererklärung 2021. You can find the version for the Steuererklärung 2025 at: (2025): Time period Specify the time period in 2021 during which the child has completed a voluntary service.For each month in which the reason was given, you can receive the pro rata child and child-raising allowance if the prerequisites are fulfilled.