HesapHanem

Mid-Month Move Rent Calculator

Enter your rent and move-in day to prorate the first month.

How it is calculated

The rent is spread evenly over the days of the month and you pay for the days from move-in to the last day. days occupied = days in month − move-in day + 1, daily rate = monthly rent ÷ days in month, and prorated rent = monthly rent × days occupied ÷ days in month. The move-in day itself counts as an occupied day. The days-in-month field accepts 28 to 31 and is assumed to be 30 if you leave it empty, so it does not look up the calendar for you. The move-in day must be a whole day between 1 and the days in the month, and rent must be above zero. The prorated amount is computed from the unrounded daily rate and then rounded to cents, so it can differ by a cent or two from the displayed daily rate times the days.

Worked example

Rent is $1,500 a month, you move in on the 18th of a 31-day month. Days occupied: 31 − 18 + 1 = 14. Daily rate: 1,500 ÷ 31 = $48.39 (rounded for display). Prorated rent: 1,500 × 14 ÷ 31 = $677.42. Note that multiplying the rounded $48.39 by 14 would give $677.46, four cents more, because the tool uses the exact daily rate. Had you moved in on the 1st, you would owe the full $1,500.00 for 31 days.

Try this example →

Common mistakes

  • Leaving days in month empty for a 31-day or 28-day month. The tool then assumes 30 days and the result is slightly off.
  • Counting from the day after move-in. The move-in day is included, so moving in on the 18th of a 31-day month means 14 days, not 13.
  • Entering the move-out or lease end date instead of the move-in day. This calculator prorates the days from the chosen day to the end of the month.
  • Using a fixed 30-day month because the lease says so, then comparing with a landlord who divides by the real number of days. Check which method your lease states.
  • Forgetting that deposits, utilities and fees are not part of this figure. Only the rent is prorated.

Sources

About this calculator

When a lease starts partway through a month, landlords typically prorate the first month's rent rather than charging the full monthly amount — you only pay for the days you actually occupy the unit. The standard method divides the monthly rent by the actual number of days in that specific month (28, 29, 30, or 31), then multiplies by the number of days from move-in to month's end.

This calculator runs that math automatically once you enter the monthly rent, your move-in day and the number of days in that month (28 to 31; if you leave it empty it assumes 30). The flat 30-day assumption gives a slightly wrong figure for other months, so the real day count matters when checking a lease's prorated charge or producing a first invoice.

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Comments (1)

  • Editorial team

    Whether the 30-day shortcut is allowed depends on the lease, and the gap is visible: for 1,500 rent and a move-in on the 18th of a 31-day month the tool gives 677.42 for 14 days, but with the days field set to 30 it gives 650.00 for 13 days. Neither is wrong, they follow different conventions. Remember this covers rent for the partial month only. Does your lease say actual days or a flat thirty? Tell us which convention it uses.

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