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Bills and rules

How are heating costs allocated?

Read the common share and measured consumption separately.

The basic calculation for central heating

In central heating, 30% of the heating cost is allocated according to enclosed floor area and 70% according to measured consumption. This explanation concerns central heating; other system types must be assessed separately.

What should the statement contain?

The period, total building cost, apartment area, total area, meter consumption and unit calculations should be verifiable. Space heating and domestic hot water should be treated as separate cost items.

Try the calculation

Enter only the amount allocated to space heating in the calculator. The example result does not replace an official statement accounting for hot water, faulty meters and special adjustments.

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Regulations and implementation conditions can change; use the current text for the relevant period.

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IMPORTANT INFORMATION

Information on Tiered Natural Gas Pricing and Heat Cost Allocation

Following BOTAŞ’s announcement dated 3 April 2026, within the framework of the Energy Market Regulatory Authority (EPDK) and BOTAŞ regulations, tiered pricing for residential consumers took effect on 4 April 2026.

Under this scheme, the government subsidy varies by consumption tier, increasing the price paid per cubic metre. Depending on the region and consumption level, the difference in unit costs between Tier 1 and Tier 2 ranges from 60% to 80%.

Although total natural gas bills issued to buildings have increased, no changes have been made to the Regulation on the Allocation of Heating and Domestic Hot Water Costs in Central Heating and Hot Water Systems. Accordingly, costs continue to be calculated and allocated using individual unit meter readings and the building’s current natural gas invoice amount.

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