Field help: (2018) There is a joint property (marriage contract!). This text refers to the Steuererklärung 2018. You can find the version for the Steuererklärung 2025 at: (2025): There is a joint property (marriage contract!). Only if you have concluded a marriage contract and the community of property has been agreed, you have to put a checkmark in your tax return.In most marriages, the legal matrimonial property regime of community of gains applies. Then you must not check at this point.