BILL AUDIT · LAB-12

Utility Bill Comparison Calculator

Separate usage-driven changes from rate and fixed-charge changes between two bills.

INPUTSEDIT ANY VALUE

Current usage charges$Current fixed charges$Previous usage charges$Previous fixed charges$Current billing daysdaysPrevious billing daysdays

ESTIMATELIVE RESULT

Total bill change+$44.00

Current cost per day$9.13

Prior cost per day$7.97

Daily change14.6%

Planning estimate. Your utility’s tariff, taxes, tiers and adjustments control the actual bill.

FORMULADifference = current total − previous total

IMPORTANT LIMIT

Compare billing periods with a similar number of days and note weather or occupancy changes.

HOW TO USE IT

Copy the bill’s units first.

Match every field to the unit printed on your statement. Use the current billing period, preserve fixed charges, and compare a similar number of service days.

For a stronger estimate

Use the exact rate from your bill instead of a reference average.
Keep taxes, credits and past-due balances separate.
Check tiers or time-of-use windows in the utility tariff.