Spouses and life partners (hereinafter referred to as "partners") can generally be classified in the following tax class combinations:

• III/V
• IV/IV and
• IV/IV with factor

The prerequisite for this is that you and your partner are not permanently separated on January 1 of the year.

A marriage or civil partnership includes a cohabitation and economic partnership - for example, a joint residence and a joint bank account. If this community no longer exists in the long term, it is assumed that the marriage or civil partnership is separated, divorced or dissolved.

In the event of separation, the following rules apply to income tax deduction:

• In the event of a separation after January 1 of a given year, the previous tax brackets still apply for the current year.
• In the year of separation, a tax class change from tax class III to V or vice versa or to IV/IV is generally possible.
• You will only be assigned to tax class I as a partner from January 1 of the following year. Your employer will automatically be notified of the change in tax class.

If you live alone in a household with your child from January 1st of the following year, you can also apply for tax class II. There are further, separate requirements for this (relief amount for single parents). As an employee, you are obliged to inform the tax office of your permanent separation and have your tax class changed.

If your marriage is divorced or your civil partnership is dissolved, the following applies:

• If you and your partner were already permanently separated on January 1 of the year of the divorce or annulment, there will be no changes to your tax class. You will remain in tax class I or be assigned to tax class II if the requirements for this are met.
• If you and your partner have not yet been living apart permanently on January 1 of the year of divorce or annulment, the previous tax classes will apply for the year of divorce or annulment.
• It is generally possible to change tax class from tax class III to V or vice versa or to IV/IV.
• You and your former partner will only be assigned to tax class I from January 1 of the following year. Your employer will automatically be notified of the changed tax class.
• If you live with your child in the same household from January 1st of the following year, you can apply for tax class II.

The registration authorities must notify the Federal Central Tax Office (BZSt) of any changes in marital status. You therefore do not need to inform the tax office of a divorce or dissolution of a civil partnership

Notes:
If the conditions for taking into account the relief amount for single parents no longer apply, you are obliged to inform your local tax office of this. An informal written notification is sufficient.