You want to live in Berlin for several working days per week and keep your existing home. The additional rent seemingly fits into the budget. Before you agree, however, the possible Berlin second-home tax must be considered. The professional reason alone does not answer the tax question. This article explicitly concerns Berlin; regulations of other German municipalities or Austrian places do not apply.
Describe the personal housing situation correctly first
The Berlin tax authority describes the second home as an apartment serving as a secondary dwelling for personal living needs. Owner-occupied property and gratuitous provision can also be relevant. That an apartment is used only rarely or that the main residence is also in Berlin does not automatically remove the tax question. [SERVICE]
Our editorial recommendation: Record both actual living situations and the intended use. Is it a self-owned, permanently available flat or a different form of accommodation? The registration (Melde-) classification should be clarified truthfully and not chosen merely so that a desired tax consequence results.
The professional exception requires more than a workplace
The official Berlin FAQ names an exception for professionally maintained flats of married persons or persons living in a registered civil partnership, not permanently separated, when the joint main residence is outside Berlin. [FAQ] The requirements must fit together.
A single person is not covered simply because they need the Berlin flat exclusively for the working week. Even for a couple, the designation “family flat” alone is not sufficient without the relevant personal and factual constellation. If in doubt, have your specific case assessed with the relevant evidence.
This article does not deal with a comprehensive income tax examination of a double household. A possible consideration of costs in another tax context does not automatically result in exemption from this Berlin state tax.
The net cold rent belongs in the correct calculation
For taxation periods from 2025, Berlin specifies a tax rate of 20 percent of the net cold rent. The official information distinguishes this from operating and heating costs and corresponding surcharges. Special bases apply for ownership or free use and for jointly used shares of an apartment. [SERVICE] [FAQ]
Therefore do not simply take the warm rent or any arbitrary total listing amount. Have a furnished flat rate broken down comprehensibly if necessary and clarify the relevant assessment basis. The tax actually owed is determined by the competent authority, not by a self-chosen budget line.
A hypothetical annual comparison
In the fictional model a checked monthly assessment basis of a net cold rent of 600 euros is assumed. It is assumed there is a full taxable year and no exemption. Then 600 euros times twelve months equals 7.200 euros; 20 percent of that is 1.440 euros for the year. For private reserve planning this would correspond to 120 euros per month.
The monthly reserve figure is not a statement about official payment dates. The example also does not replace a determination of the investigation period, a pro rata annual obligation or personal particularities. It shows why a second-home plan without the relevant tax item can contain a significant cost gap.
Organise registration and tax declaration as separate processes
The ServicePortal explicitly points out that missing mail from the tax office does not lift the statutory declaration obligation. [SERVICE] Do not therefore wait indefinitely for an automatically sent letter. Clarify with the competent tax office which declaration, evidence and deadlines are required for your actual start.
Have rental documents, a breakdown of the rent and evidence of a claimed exemption prepared in an orderly manner. A general employer certificate does not automatically replace all personal requirements. Changes in your living or partnership situation may require a new clarification; do not confirm earlier information without checking.
Your outcome is a viable overall comparison: additional housing costs, possible tax amount, journeys home and remaining household leeway. Only then can you assess whether this second flat fits your work routine. A presumed exemption is to be treated as open until its actual basis is clarified.