How do you prorate a utility bill?
Subtract one-time fees if they should be handled separately, divide recurring charges by billing days, multiply by the days you were responsible, then divide by the number of people sharing the bill.
Prorated utility bill calculator
Split a utility bill fairly for a move-in, move-out, or roommate change.
Use billing days and responsible days before asking a roommate, tenant, or previous occupant to pay a share of electricity, water, sewer, or combined utilities.
Electric bill
$226
Energy$142
Delivery$48.00
Fees$36.00
All-in rate
$0.246 per kWh
Best next check
Cooling hours
Split a partial utility bill
Enter the full bill, billing days, responsible days, and sharing count to estimate a fair move-in or move-out share.
Estimated amount due
$77.06
Includes $59.06 of prorated recurring charges and $18.00 of shared one-time fees.
Responsible period
18 days
56% of the billing period is included in this share.
Recurring cost per day
$6.56
$210 of recurring charges spread across the billing period.
Full-period equal share
$123
Use this to compare the prorated share with a simple equal split of the whole statement.
Proration note
Use this prorated amount as a worksheet, then compare it with the lease, roommate agreement, or utility account rules.
For clean records, write down the service dates, meter read dates, one-time fees, credits, and the split method used.
Use this with move-in and renter tools
Billing days calculator
Normalize two bills by days before deciding what a normal period should cost.
Open pageRenter utility bill calculator
Estimate renter-paid electricity, water, sewer, utility fees, and included services.
Open pageFirst utility bill guide
Separate partial cycles, deposits, activation fees, and estimated reads on a first bill.
Open pageFAQ
Short answers for search visitors and bill-checking moments.
Should deposits or setup fees be prorated by day?
Usually deposits, activation fees, and transfer fees are not usage charges. Decide whether they belong to one person, the account holder, or everyone sharing the bill before using the final amount.
Is a prorated utility bill the same as an average bill?
No. A prorated bill splits one specific billing period. An average utility bill estimates a normal monthly baseline after partial periods and one-time fees are removed.