Prorated Rent: worked example
| Monthly rent | $1,800 |
|---|---|
| Days in the month | 30 |
| Days occupied | 12 |
| Prorated rent | $720 |
| Rent per day | $60 |
Monthly rent is the full rent for a complete month, days in the month is the actual length of the month you are prorating, and days occupied is how many days you will live there, counting the move-in day if the lease includes it. Some landlords prorate using a 30-day month for every month, while others use the actual days, so check the lease. The move-in day is usually counted, and move-out dates depend on the notice given.
Prorated Rent: formula
Prorated Rent: changing Monthly rent
| Monthly rent | Prorated rent | Rent per day |
|---|---|---|
| $1,440 | $576 | $48 |
| $1,620 | $648 | $54 |
| $1,800 (example) | $720 | $60 |
| $1,980 | $792 | $66 |
| $2,160 | $864 | $72 |
Prorated Rent: compare input ranges
| Input | Tested from | To | Prorated rent: low input | Prorated rent: high input | Swing |
|---|---|---|---|---|---|
| Days in the month | 27 | 33 | $800 | $655 | $145 (20%) |
| Monthly rent | $1,620 | $1,980 | $648 | $792 | $144 (20%) |
| Days occupied | 11 | 13 | $660 | $780 | $120 (17%) |
Prorated Rent: individual input comparisons
| Input | Value | Prorated rent | Rent per day |
|---|---|---|---|
| Monthly rent | $1,440 | $576 | $48 |
| $1,620 | $648 | $54 | |
| $1,800 | $720 | $60 | |
| $1,980 | $792 | $66 | |
| $2,160 | $864 | $72 | |
| Days in the month | 24 | $900 | $75 |
| 27 | $800 | $67 | |
| 30 | $720 | $60 | |
| 33 | $655 | $55 | |
| 36 | $600 | $50 | |
| Days occupied | 10 | $600 | $60 |
| 11 | $660 | $60 | |
| 12 | $720 | $60 | |
| 13 | $780 | $60 | |
| 14 | $840 | $60 |
Prorated Rent: combined input changes
| Monthly rent / Days in the month | 24 | 30 | 36 |
|---|---|---|---|
| $1,440 | $720 | $576 | $480 |
| $1,620 | $810 | $648 | $540 |
| $1,800 | $900 | $720 | $600 |
| $1,980 | $990 | $792 | $660 |
| $2,160 | $1,080 | $864 | $720 |
Prorated Rent: which assumptions move the result?
Prorated Rent: values and definitions
| Quantity and definition | Value used |
|---|---|
| Monthly rent | $1,800 |
| Days in the month — The number of days in the month you move in or out. | 30 |
| Days occupied — How many days of that month the rent covers. | 12 |
| Prorated rent | $720 |
| Rent per day | $60 |
Prorated Rent: half and double Days in the month
| Days in the month | Prorated rent |
|---|---|
| 15 | $1,440 |
| 30 | $720 |
| 60 | $360 |
Common error: Assuming every lease uses actual calendar days. This tool uses the entered denominator; a lease may instead specify a 30-day or annual-rate convention.
Methods differ: actual days, a 30-day convention or a 365-day year produce slightly different amounts. Utilities, fees and security deposits are separate from rent. Move-in dates in the middle of the month can align the lease term with a payment day instead.
Local law may also set rules for proration and notice.
Everyday Money calculators: Unit Price Comparison Calculator, TV Size Calculator, Percentage Calculator, Percentage Change Calculator, Discount Calculator, Tip Calculator.
Prorated rent charges a fraction of a month for the days you hold the space. At $1,800 a month, a 30-day month costs $60 a day, so 12 days is $720. The month's own length sets the daily rate.
A 28-day February makes each day cost more than a 31-day July, which is why the same move-in can produce different bills.
The lease determines the rent-proration convention. Some leases divide by 30 or by 365 over 12, and that changes the total by a few dollars.
See the total cost of the tenancy with the rent affordability and rent versus buy calculators, and the rent increase and vacancy loss pages for landlords. The unit price and percentage calculators help with related arithmetic. Keep a copy of the lease with the proration clause.
How is prorated rent calculated?
Divide the monthly rent by the number of days in the month and multiply by the days you occupy the unit.
Do landlords use 30 days or the actual month?
Practices vary. Some use the actual days in the month and others use a 30-day standard, so check your lease for the method.
Is a security deposit prorated?
No. The deposit is a separate amount, and proration applies only to the rent for the partial month.