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Prorated Rent Calculator
Prorated rent = daily rate x days the tenant has the unit. The usual daily rate is the monthly rent divided by the number of days in that month, and the move-in day counts. For example, $1,500 rent with an October 20 move-in is $1,500 / 31 x 12 days = $580.65.
Prorated rent calculator
Enter the monthly rent and a date to see the prorated amount.
How to calculate prorated rent
Prorated rent is a daily rate multiplied by the number of days the tenant has the unit in a partial month. Count the move-in day and the move-out day as days of occupancy. There are three common ways to set the daily rate:
- Days in that month: monthly rent / number of days in the month (28 to 31).
- 30-day month (also called a banker's month): monthly rent / 30, whatever the month.
- 365-day year: monthly rent x 12 / 365.
Example
Rent is $1,500 a month and the tenant moves in on October 20, 2026. October has 31 days, so the tenant has the unit for 12 days (October 20 through 31).
| Method | Daily rate | Rent for October 20 to 31 (12 days) |
|---|---|---|
| Days in the month | $1,500 / 31 = $48.39 | $580.65 |
| 30-day month | $1,500 / 30 = $50.00 | $600.00 |
| 365-day year | $1,500 x 12 / 365 = $49.32 | $591.78 |
Amounts are rounded to the cent. The calculator never charges more than one full month of rent.
Which method should you use?
Use the method your lease names. If the lease is silent, the days-in-that-month method is the easiest to explain to a tenant because a full month always equals the full rent. Landlord Studio's guide calls it the most common method and notes that some states set rules on proration, so check your state and local landlord-tenant law before you rely on a method or a no-proration clause.
Need to give the tenant proof of payment? Use the rent receipt generator.
Collect prorated rent automatically
Most landlord software lets you charge a one-time prorated amount for the first month and then recurring rent from the 1st. Compare property management software for small landlords or see free options.
Frequently asked questions
How do I calculate prorated rent?
Divide the monthly rent by the number of days in the month to get a daily rate, then multiply by the number of days the tenant has the unit. For $1,500 rent and an October 20 move-in, that is $1,500 / 31 x 12 = $580.65.
Does the move-in day count for prorated rent?
Yes. The tenant has the unit on the move-in day, so it is counted. A move-in on the 20th of a 31-day month is 12 days.
Is prorated rent based on 30 days or the actual days in the month?
Either can be used. Using the actual days in the month is the most common method; some leases use a 30-day month or a 365-day year instead. Follow whatever your lease says.
Do landlords have to prorate rent?
It depends on your lease and your state and local law. Some states have rules on proration, so check your local landlord-tenant law.