Prorated rent is rent charged for only part of a month. When a tenant moves in or out partway through a rent period, they pay for the days they actually have the home instead of the full month. A tenant who moves into a $1,500-a-month apartment on November 17, for example, owes rent for 14 of November’s 30 days: $700.
This guide covers when prorated rent applies, the three ways landlords calculate it, and worked examples for moving in and moving out. To skip the arithmetic, the free prorated rent calculator shows all three methods side by side and prints a notice for your tenant.
What prorated rent means
To prorate means to divide something in proportion. With rent, the thing being divided is one rent period, usually a calendar month, and the proportion is the share of days the tenant occupies the home. You’ll also hear it called partial rent or partial-month rent.
Proration only applies to a partial period. Once the tenancy lines up with the normal due date, the tenant pays the full monthly rent again.
When prorated rent comes up
- Moving in mid-month. The lease starts after the rent due date, so the first payment covers only the days left in that period.
- Moving out mid-month. The tenancy ends before the period does, and the lease lets the tenant pay only for the days used.
- Rent due on a day other than the 1st. The rent period runs from the due date to the day before the next one, for example the 15th to the 14th, and proration uses that period.
- Changing the due date. Moving a tenant from the 15th to the 1st creates one short period that has to be prorated.
How prorated rent is calculated
Every method follows the same two steps: find a daily rate, then multiply it by the number of days the tenant has the home. The methods differ only in how they get the daily rate.
| Method | Daily rate | On $1,500 rent |
|---|---|---|
| Actual days in the month | Monthly rent ÷ days in that month (28 to 31) | $53.57 in February, $50.00 in November, $48.39 in December |
| 30-day month (banker’s month) | Monthly rent ÷ 30 | $50.00 in every month |
| 365-day year | Monthly rent × 12 ÷ 365 | $49.32 in every month |
Then: prorated rent = daily rate × days occupied. Keep the daily rate unrounded and round only the final amount to the cent. Rounding the daily rate first can throw the total off by a few cents.
Why the three methods give different answers
In a 30-day month like November, the actual-days and 30-day methods agree. In February and in 31-day months they split. Take $1,500 rent and a tenant who moves in on February 15, 2027, with the move-in day charged, which is 14 days:
| Method | Working | Owed |
|---|---|---|
| Actual days | $1,500 ÷ 28 × 14 | $750.00 |
| 30-day month | $1,500 ÷ 30 × 14 | $700.00 |
| 365-day year | $1,500 × 12 ÷ 365 × 14 | $690.41 |
That’s a $59.59 difference for the same move-in. Your lease decides which method applies, so check it before you send a bill or pay one.
Worked examples
Moving in on November 17
Rent is $1,500, due on the 1st. The tenant gets the keys on November 17, 2026, and the lease charges for the move-in day. November has 30 days, and the tenant has the home from November 17 to 30: 14 days.
Actual days: $1,500 ÷ 30 × 14 = $700.00. The 30-day method gives the same answer, and the 365-day year gives $690.41. Full rent of $1,500 is then due on December 1. If the lease doesn’t charge for the move-in day, count 13 days instead: $650.00.
Moving out on December 10
Rent is $1,500 and the tenant moves out on December 10, 2026, with rent charged through the move-out day. They had the home from December 1 to 10: 10 of December’s 31 days.
Actual days: $1,500 ÷ 31 × 10 = $483.87. The 30-day month gives $500.00 and the 365-day year gives $493.15. If the tenant already paid December in full, the difference is what would be refunded, but only if the lease allows prorating at move-out.
Rent due on the 15th
Rent is $1,500, due on the 15th, and the tenant moves in on November 3, 2026. The rent period runs from October 15 to November 14, which is 31 days, and the tenant has 12 of them (November 3 to 14).
Actual days: $1,500 ÷ 31 × 12 = $580.65. The first full payment is due on November 15.
Prorated rent for the first month
The first payment covers the days left in the move-in month. When a tenant moves in near the end of the month, some landlords collect the prorated amount and the next full month together, so the tenant doesn’t make two payments a few days apart.
For example, a tenant who moves in on November 25 with $1,500 rent owes 6 days of November, $300.00, plus $1,500 for December: $1,800 at move-in. If you work this way, say so in the lease so it doesn’t come as a surprise.
Does the move-in day count?
Usually yes, because the tenant has the keys that day. The lease decides, though, and the same goes for the move-out day. Leaving either day out removes one day’s rent from the total. The calculator has a switch for this.
Does a landlord have to prorate rent?
There’s no single U.S. rule. Landlord-tenant law is set by states and some cities, and the lease fills in the rest. Many leases spell out how a partial first month is handled. At move-out, leases often require a notice period and rent through the end of it instead of a prorated amount.
So read the lease first, then check your state and local rules. If a lot of money depends on the answer, a local attorney or landlord-tenant association can tell you how it works where the home is.
Quick answers
What does prorated mean on a lease?
It means rent is charged in proportion to the days the tenant has the home during a partial period, instead of a full month.
Is prorated rent cheaper than full rent?
The total is lower because it covers fewer days. Under the actual-days method, the price per day is the same as for a full month.
How do I work out prorated rent per day?
Divide the monthly rent by the number of days in the month (or by 30, or multiply by 12 and divide by 365, depending on your lease). Then multiply by the days the tenant has the home.
What’s the fastest way to calculate it?
Use the prorated rent calculator. Enter the rent and the date, and it shows the amount under all three methods, the working for each, and a notice you can print for your tenant.
This guide explains common practice, not legal advice. Rules differ by state and city, and your lease may set its own terms.
Photo by Jakub Zerdzicki on Pexels.