Prorated Rent Calculator
Moving in partway through the month? This free prorated rent calculator figures out exactly what you owe for a partial first month: enter your monthly rent and your move-in date, and it computes a fair daily rate from the actual days in that month and charges you only for the days you occupy the unit.
Enter your numbers
Your results
| Daily rate | $0.00 |
|---|---|
| Days in month | – |
| Full month's rent | $0.00 |
| You save vs. full rent | $0.00 |
Actual-days-in-month method. Check your lease: some landlords use a flat 30-day divisor instead.
How to use this calculator
Enter your monthly rent as written in your lease, then pick your move-in date. Results update instantly as you change either value. The big number is what you owe for the partial first month; the table below breaks down the daily rate, the days in that month, and how much you're saving versus a full month's rent.
How it works
This calculator uses the actual-days-in-month method, the most common approach landlords use:
Daily rate = monthly rent ÷ days in that month (28, 29, 30, or 31). Days charged = days in month − move-in day + 1 (your move-in day counts). Prorated rent = daily rate × days charged. For example, $2,000 rent with a September 15 move-in: $2,000 ÷ 30 = $66.67 per day × 16 days = $1,066.67.
One caveat: some landlords use a flat 30-day divisor instead — daily rate = rent ÷ 30 no matter the month. That method charges you a little more per day in February and a little less in 31-day months. If your lease specifies a flat 30-day divisor, compare the two numbers and confirm which one your landlord applies before you pay.
Frequently asked questions
How do you calculate prorated rent?
Divide the monthly rent by the number of days in that month to get a daily rate, then multiply by the number of days you occupy the unit (your move-in date through the last day of the month). For example, with $2,000 rent and a September 15 move-in: $2,000 ÷ 30 = $66.67 per day × 16 days = $1,066.67.
Is prorated rent based on 30 days?
Sometimes, but not always. Some landlords use a flat 30-day divisor regardless of the month, while others use the actual number of days in the month (28, 29, 30, or 31). The actual-days method is more precise and more common in leases. A flat 30-day divisor makes February slightly more expensive per day and 31-day months slightly cheaper.
Do you pay full rent if you move in mid-month?
No. You pay only for the days you have access to the unit — your move-in day through the end of the month. The prorated amount is always less than a full month's rent unless you move in on the 1st, in which case it equals the full rent.
What is prorated rent for a move-out?
It's the same idea in reverse: if you move out mid-month, you owe the daily rate times the number of days you occupied the unit (the 1st through your move-out day). Many leases require you to pay through the last day of the lease term, so check your agreement before assuming a partial final month.
Does my move-in day count in prorated rent?
Yes — under the standard method used here, the move-in day itself counts as a charged day. Days charged = days in the month − move-in day + 1. So a move-in on the 15th of a 30-day month means 16 charged days (the 15th through the 30th).