Utilities calculator - see how much your consumption really costs
Domopay calculates the cost of every utility based on your meter readings and the current tariff. Water, gas, single- and dual-rate electricity, heating - all to the cent, with no Excel sheets or risk of a math error.
How the Domopay utilities calculator works
You enter two readings - the starting and the ending one - and pick a provider and tariff. Domopay calculates consumption (the difference between readings), multiplies it by the net rate, adds VAT, the subscription fee, and any fixed charges, then shows the total gross cost for the period. You also see how the result compares to previous months and the average for similar households.
What you can calculate
The calculator supports every common utility in a Polish apartment: cold water, hot water and sewage (typically billed 1:1 with cold water consumption), natural gas including distribution and transmission fees, electricity in G11 (single-rate) and G12 / G12w (dual-rate: day/night) tariffs, heating from a heat meter, and municipal waste at the local per-person rate.
Why manual calculation isn't worth it
The most common mistakes when calculating utilities by hand: outdated VAT rate, skipped subscription fee, wrong m³-to-kWh conversion for gas (gas in Poland is billed in kWh, not m³), forgotten night zone in G12, or mixing up the billing year. Each of these can over- or under-state a bill by tens of zlotys a month. Domopay updates rates automatically.
Calculator for managers vs residents
A resident uses the calculator to check how much they'll pay for electricity, water, or gas this month and compare it with the bill from the provider. A property manager uses it at building scale: calculating common-area water consumption, computing refunds or surcharges per unit, and generating annual settlements for the housing community.
Common questions about the utilities calculator
Does the calculator account for fixed charges and subscription fees?
Yes - Domopay separates the cost into the variable part (consumption × rate) and the fixed part (subscription fee, distribution and transmission fees), exactly as it appears on the provider's invoice. The result can be compared 1:1 with the bill.
Where do the current tariffs come from?
Water rates come from tariffs approved by Wody Polskie and published by local waterworks. Gas, electricity, and heating rates are updated from URE-approved tariffs and individual seller price lists.
How do I calculate electricity cost on G12?
G12 has two rates: day and night. You enter consumption from each zone separately and the calculator multiplies it by the right rate and sums the result. Domopay also handles G12w variants where weekends are treated as the night zone.
Can the calculator handle annual costs, not just monthly?
Yes - pick any range (month, quarter, calendar year, billing year) and Domopay sums consumption and cost from all readings within that range. Export the result to PDF as an annual summary.
Calculate utilities once - Domopay handles the rest
Join the beta and stop calculating bills in Excel.