Partial billing period
Select the complete billing period and the inclusive occupied dates. The calculator uses the actual number of calendar days and returns one exact rounded amount.
Date-only calculation
Select the complete billing period and the inclusive dates occupied within it.
Actual calendar days
No fixed 30-day assumption and no local-time or daylight-saving calculation.
$3,100.00 ÷ 31 days × 22 occupied days = $2,200.00
The selected billing period runs from 2026-07-01 through 2026-07-31 and contains 31 calendar days. Occupancy runs from 2026-07-10 through 2026-07-31, including both dates, for 22 days. Using actual calendar days, the rounded prorated amount is $2,200.00. This formula does not decide what a lease or local rule requires.
If July 1 through July 31 is the selected period, the denominator is 31. Occupying July 10 through July 31 counts 22 days because both endpoints are included. For $3,100, the calculation is $3,100 ÷ 31 × 22 = $2,200.
The final amount uses the same deterministic integer-cent allocation authority as the other RentSplit formulas. A whole-period occupancy always returns the complete selected rent. A one-day occupancy remains one share out of the actual period-day count, with the final result rounded once to whole cents.
This route applies one explicit actual-calendar-day formula. It does not select a legal convention, infer rent from a monthly lease, exclude weekends, build a payment schedule, or decide when possession began or ended.
Confirm the billing period, occupancy dates, and required convention with the relevant agreement before relying on the result.
No. It counts the actual calendar days between the selected billing-period start and end, including both dates.
Yes. Occupied start and occupied end are inclusive. A single occupied date counts as one day.
Yes. The selected start and end can cross month or year boundaries. The calculation uses date-only calendar arithmetic and handles leap days.
The daily rate is an explanatory division of total rent by billing-period days. The final prorated amount is allocated and rounded once to whole cents so it remains exact and reproducible.
No. It reports the selected actual-days formula. A lease, local rule, or agreement may specify another convention.