Rent owed for the last partial month, from the 1st to your move-out day
Runs in your browser. Nothing you type is sent anywhere. Updated on 25 Oct 2026.Leaving on the 12th of the month usually means paying rent for 12 days, not the whole month, but only if your lease or your landlord allows proration. Pick your move-out date and monthly rent to see the amount for the days you occupy. The move-out day itself is counted.
Moving out is already selected under "Partial month".
Enter the "Monthly rent" and pick the "Move-out date".
Read the rent from the 1st to your move-out day, by the days in that month.
Check the three methods under "How each method works" and use the one your lease names.
The amount is worked out three ways: by the days in that month, by a 30-day month and by a 365-day year.
When a lease starts or ends partway through a month, most landlords charge rent only for the days you have the keys. The arithmetic is simple, but there are three common ways to get the daily rate, and they give different answers. This calculator shows all three side by side, so you can match the one your lease names or check the figure on your move-in invoice.
Which days count. A move-in date counts as a day you pay for, through the last day of the month. A move-out date counts as a day you pay for, from the 1st of the month. The page shows the first and last day it counted, so you can compare it with your lease.
What this calculator does not do: it does not know your lease or your state's rules, and it does not add utilities, pet rent, parking or late fees. Some leases require a full month at move-out regardless of the date, and some landlords roll a short first month into the second month's payment. Read the rent clause of your lease, and ask the landlord in writing if it does not say.
The rest of the article, and all 6 questions about Prorated Rent Calculator, are on the Prorated Rent Calculator page.
Divide the monthly rent by the number of days in that month to get a daily rate, then multiply by the days you will live there, counting the move-in day. For $1,500 in a 31-day month and 12 days, the daily rate is $48.39 and the prorated rent is $580.65. Some leases use 30 days or 365 days instead.
A banker's month treats every month as 30 days, so the daily rate is the monthly rent divided by 30. On $1,500 rent the daily rate is $50 in every month. The method charges a little more than the actual-days method in 31-day months and less in February, and never more than one month's rent.
Usually yes. Most leases charge rent from the day the tenancy begins, so moving in on the 20th of a 31-day month means paying for 12 days, the 20th through the 31st. The calculator counts the move-in day and shows the first and last day it counted, so you can compare it with your lease.
Only your lease can answer that. Many leases require a full month's rent, or written notice such as 30 days, regardless of the move-out date, and some state laws limit what a landlord can charge. The calculator shows what the partial month would cost if proration applies; confirm with your landlord in writing before relying on it.
Formula only: no rates or limits are read from an official source.
Still stuck? Ask about Prorated Rent Calculator and anybody who knows can answer. No account needed.
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