Introduction
The CO2-Kosten 2027 Rechner is a free calculator from Anonyfox Lab in Hamburg. It calculates the CO2 price that Germany puts on heating fuels in 2027. The tool page is in German.
Purpose and Target Audience
On 15 October 2026 the German Bundestag kept the CO2 auction corridor for 2027 at 55 to 65 EUR per tonne. The calculator shows what this price means for a single home or building. It is for people in Germany who heat with gas or heating oil, including landlords and tenants who must split the CO2 cost.
Key Features
- Fuel and unit input: Enter the annual consumption of natural gas in kWh or m³, or of heating oil in litres or kWh.
- CO2 and cost result: See emissions in kg of CO2 and the cost in euros at both ends of the corridor, including 19% VAT.
- Landlord and tenant split: Split the cost by floor area under the 10-step table of the German CO2 cost allocation act (CO2KostAufG).
- Year comparison: Compare costs for 2024 to 2027 with a 2028 scenario at 46 EUR per tonne, based on the Eurosystem projections.
- Open method: Check the emission factors, the formula and the legal sources on the page.
Benefits
The calculator turns a price per tonne into a euro amount on the fuel bill. For example, 15,000 kWh of natural gas gives 2,720.92 kg of CO2 and a CO2 cost of 178.08 to 210.46 EUR in 2027. Landlords and tenants see the share that each party pays.
Conclusion
The CO2-Kosten 2027 Rechner is a free and transparent tool for German households and landlords who want to know their CO2 cost for heating. An optional PDF report on the cost split is linked from the page.
