Prorated Rent Calculator
Enter your monthly rent, the number of days in the month, and how many days you will occupy the unit. The calculator returns the prorated rent for that partial month and the daily rate it is based on.
How to calculate prorated rent
Proration splits a month's rent down to a daily rate so you only pay for the days you live there. The most common and tenant-friendly method divides the monthly rent by the actual number of days in that month, then multiplies by the days you occupy. Some landlords instead divide by a flat 30 days, or use the annual method (rent x 12 / 365). The days-in-month method used here is the most widely accepted, but always confirm which your lease specifies.
Daily rent = monthly rent / days in month; prorated rent = daily rent x days occupied
Worked example
Your rent is $1,500, you move in on the 16th of a 30-day month, and occupy 15 days.
- Daily rent: $1,500 / 30 = $50 per day
- Days occupied: 15
- Prorated rent: $50 x 15 = $750
Result: You owe $750 for that partial month at a $50 daily rate.
Frequently asked questions
How is prorated rent calculated?
Divide the monthly rent by the number of days in the month to get a daily rate, then multiply by the number of days you occupy the unit. For $1,500 rent over a 30-day month, the daily rate is $50, so 15 days costs $750.
Which proration method should I use?
There are three common methods: divide by the actual days in the month (used here, most accurate), divide by a flat 30 days, or use the yearly method (rent x 12 / 365). They give slightly different results, so the fairest approach is whichever your lease names. If the lease is silent, the days-in-month method is the usual standard.
Do I prorate rent when moving out?
Yes, the same method applies for a mid-month move-out: charge only for the days you stay. Count the move-out day according to your lease, then multiply the daily rate by the days occupied that month.
Does prorated rent include a deposit or fees?
No. Proration applies only to base rent. Security deposits, application fees, and recurring charges like parking or pet rent are handled separately and are usually not prorated unless your lease says otherwise.