EDITORIAL STANDARD
Methodology before certainty.
Every result is an estimate with a visible formula, editable inputs and a stated limitation.
1. What the calculators do
Utility Bill Lab performs arithmetic on information a visitor enters. It does not read a utility account, predict a tariff or determine what a utility must charge. Results update in the browser and are not stored by us.
2. Formula design
We favor auditable formulas: consumption multiplied by a variable price, plus fixed fees. When an estimate needs an engineering assumption—such as water-heating energy—it appears beside the tool. We avoid hidden “AI estimates.”
3. Electricity references
State residential electricity defaults use the U.S. Energy Information Administration’s Electric Power Monthly, table 5.6.A. The current dataset is for May 2026 and was released July 23, 2026. EIA marks the values preliminary. A visitor’s actual bill rate is more relevant.
Open EIA table 5.6.A ↗4. Water and sewer inputs
Water and wastewater prices are set locally and often use tiers, minimums, meter-size fees and seasonal rules. We do not assign a false statewide average. Visitors enter the local per-1,000-gallon rate and decide whether sewer applies.
5. Review and corrections
Calculator formulas are tested against hand-worked examples. Source dates appear on the Data Status page. Content is reviewed when an upstream dataset changes or a material error is identified.
6. Independence
Utility Bill Lab is not a utility, regulator or government agency. Advertising may support the site, but advertisers do not choose formulas, rankings or conclusions.