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Shared Apartment Cost Calculator

Split costs in a shared apartment fairly. By room size and common area.

Updated 2025 Data stays local

Rooms / Roommates

Total Costs (Rent + Utilities)

1.450,00 €

NameRoomShareRent+ Util.Total
Person 118,053,2%638,71 €125,00 €763,71 €
Person 214,046,8%561,29 €125,00 €686,29 €

Rent is distributed by room size. Common area (30 m²) is equally shared. Utilities are split equally.

Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.

Frequently Asked Questions

How should shared apartment costs be split?

Common methods are equal splitting, room-size-based splitting, or income-based splitting. Base rent is usually split by room size, while shared utilities are often divided equally.

What legal considerations apply to shared apartments?

In a shared lease (Gemeinschaftlicher Mietvertrag), all tenants are jointly liable. In a main tenant model (Hauptmieter), only the main tenant has the lease and sublets to others.

What is the Shared Apartment Cost Calculator?

The shared flat cost calculator distributes costs among all flatmates fairly, based on room size or individual usage.

How does the Shared Apartment Cost Calculator work?

Enter the total rent, service charges and room sizes for all flatmates. The calculator distributes costs proportionally by room size (shared areas split equally). Alternative splits by headcount or income are available.

Key Data and Facts

Fair method: shared areas equally, private areas by sqm. Service charges often split per person. Broadcasting fee (GEZ): 18.36 euros/month per household (not per person).

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