You must submit an application to the tax office for a change of tax class for spouses/partners. The application can also be submitted electronically at"My Elster". In cases where both spouses are affected by the change, such as in the case of marriage, both spouses must submit and sign the application jointly, if the factor method is chosen, stating the expected wages for the calendar year 2021 or also in connection with an application for a wage tax reduction.
When appearing in person at the tax office, the employee must always provide proof of identity.
A change from tax class combination III/V to IV/IV is also possible at the request of only one spouse/life partner, so that both are placed in tax class IV/IV.