Prorated rent is a partial month’s rent that covers only the days a tenant actually has the unit. It is used most often when a tenant moves in or out on a date other than the first of the month, so they pay for the days they occupy the home rather than a full month.
Prorating is a matter of fairness and clarity. Agreeing on the method up front, ideally in the lease, keeps the first and last rent payments from turning into disputes.
How to calculate it
There are three common methods. Each starts by finding a daily rate.
- Days in the month: Monthly rent / Number of days in that month
- Annual method: (Monthly rent x 12) / 365
- Banker’s month: Monthly rent / 30
Then multiply:
Prorated rent = Daily rate x Number of days occupied
Count the move-in day as an occupied day.
Worked example
A tenant moves into a hypothetical $1,860 a month apartment on September 21. September has 30 days, and the tenant occupies the unit for 10 days (September 21 through 30).
- Days in the month: $1,860 / 30 = $62.00 a day, x 10 = $620.00
- Annual method: ($1,860 x 12) / 365 = about $61.15 a day, x 10 = about $611.51
- Banker’s month: $1,860 / 30 = $62.00 a day, x 10 = $620.00
In a 31-day month, the results would differ more. Pick one method and apply it consistently.
Some landlords collect the prorated amount at move-in and full rent on the first. Others, when the move-in date is late in the month, collect a full first month plus the prorated days in the second month.
Why it matters for landlords
Prorating correctly avoids overcharging, keeps your ledgers clean and sets a professional tone at move-in. Write your proration method into the lease agreement so tenants know what to expect. Once you have the amount, add it as a one-time charge alongside recurring rent in TenantLoop rent collection, so the first invoice is right from day one.
Related terms
Where it gets confusing.
Is a landlord required to prorate rent?
It depends on the lease and state law. Many landlords prorate at move-in as standard practice, and some states have rules about rent owed at the end of a tenancy. Spell out your method in the lease.
Which proration method is most accurate?
Dividing by the actual number of days in the month is the most precise for that month. The annual method spreads rent evenly across the year, so every day costs the same.