Commercial buildings normally fall under Grundsteuer B, the same broad property-tax category as residential buildings. The difference is the valuation method. In the federal model, commercial property such as offices, shops, workshops and warehouses is usually valued with the Sachwertverfahren rather than the residential income-value method.

The Sachwertverfahren, or asset-value method, estimates the property value from land value plus a building value derived from normal production costs, building type, gross floor area, age and depreciation. It is the central method for many German commercial-property tax assessments under the federal model.

Usually no. Commercial real estate is normally subject to the municipality's Grundsteuer B multiplier, just like residential property. The final annual tax still depends heavily on the local Hebesatz, which is why address-based lookup is useful.

Often yes, if the commercial lease includes a valid operating-cost clause. In commercial leases, property tax is commonly allocated to tenants through ancillary costs, but the owner remains liable to the municipality.

Mixed-use property is assessed by looking at the actual use and the share of residential versus commercial floor area. If commercial use predominates, the whole property may be treated as commercial under the relevant model; if residential use predominates, residential valuation may apply.

For an owner-occupied business property, Grundsteuer is generally a business expense. For rented commercial real estate, it is usually an expense connected with rental income, unless it is passed through to the tenant. The calculator estimates the tax amount; accounting treatment depends on the business case.

No. Grundsteuer is an object tax on the property, not a VAT or income-tax status. Whether the owner is VAT-registered, a Kleinunternehmer, a GmbH or an individual landlord does not by itself change the property-tax model.

Useful inputs are the address, land register or assessment details, plot size, usable or gross floor area, building type, construction year, standard land value, municipal Hebesatz and any Grundsteuerwert or Steuermessbetrag from the tax office notice.