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Prorated Rent Calculator

What this does

Compute fair partial-month rent for a mid-month move-in or move-out, with the daily rate shown.

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Calculator inputs

How to use it

Using the prorated rent calculator

  1. 01

    Enter full monthly rent

    Use the base rent from the lease, excluding utilities or fees unless those also prorate.

  2. 02

    Set the move-in day

    The calendar day you take possession; usually the lease start date.

  3. 03

    Confirm the month length

    Adjust for 28-, 30- or 31-day months; February changes the daily rate noticeably.

Good to know

Two conventions exist; ask which

Some landlords prorate on the actual calendar month; others always divide by 30 regardless of length, and a few charge a flat daily rate. Ours uses the real month, the most common convention, but your lease wording wins any disagreement.

Move-out math mirrors it

The same calculation prices a mid-month departure: count days occupied through your final day, multiply by the daily rate, and request the remainder back where local law requires it.

Watch the leap-year edge

February move-ins are the cheapest daily rents of the year under calendar convention; 28 days makes each day worth more, but you buy fewer of them. Net cost for identical occupancy windows barely differs.

How it's calculated

The math behind this calculator

Daily rate = monthly rent ÷ days in month Prorated rent = rent × (days in month − move-in day + 1) ÷ days in month

We divide the monthly rent by the actual number of days in the month to get a daily rate, then charge that rate for every day from the move-in date through the end of the month; the move-in day itself included, since the home is occupied from day one.

Assumptions & limitations

  • The move-in day itself is charged.
  • Uses the actual calendar month length, not a banking 30-day month.
  • Landlord lease terms override any calculation; confirm their convention.

Worked example

Moving in on the 16th of a 30-day month means 15 chargeable days: at $2,000 monthly rent that is a daily rate of $66.67 and a prorated bill of $1,000.00.

FAQ

Frequently asked questions

Is the move-in day itself charged?
Yes here; possession begins that day. Some landlords start charges the following day; check your lease addendum.
Should security deposits prorate?
No. Deposits are fixed protections against damage, not usage fees; they stay whatever the lease states.
Can I make my landlord use a different method?
You can negotiate anything before signing. Once signed, the lease method controls, even if it produces a different number than this calculator.

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