The answer at a glance
Prorated rent = (monthly rent ÷ 30) × 19. A 30-day month gives a daily rate of rent ÷ 30, and a move-in on day 12 leaves 19 billable days. That is $ $33.33 per day on $1,000 rent, and $633.33 due for the partial month.
The table below pre-calculates that arithmetic for rents from $1,000 to $3,000 so you can read your number off directly.
| Monthly Rent | Daily Rate (30 days) | Days Owed | Prorated Rent |
|---|---|---|---|
| $1,000 | $33.33 | 19 of 30 days | $633.33 |
| $1,500 | $50.00 | 19 of 30 days | $950.00 |
| $2,000 | $66.67 | 19 of 30 days | $1,266.67 |
| $2,500 | $83.33 | 19 of 30 days | $1,583.33 |
| $3,000 | $100.00 | 19 of 30 days | $1,900.00 |
Figures use the actual-days-in-the-month basis. A flat 30-day basis or a 365-day year gives a slightly different answer — the interactive calculator shows all three side by side.
How this is calculated
Rent is billed per day, and a move-in on day 12 means possession for 19 days of the 30. Two conventions decide the daily rate: the actual days in the month, or a flat 30-day month. This page uses the actual month, which is the most common lease default.
Prorated rent = (monthly rent ÷ 30) × (30 − 12 + 1)
= (monthly rent ÷ 30) × 19
The 30-day and 365-day bases exist because some leases quote a flat month. At 30 days the calendar basis is close to, but not the same as, a 30-day basis except in a 30-day month; check your lease for which one applies before you pay.
The same day in another month length
Nearby move-in days
Want to price your own rent, deposit and move-in costs? Open the full prorated rent calculator — it runs live in your browser, compares all three billing bases, and stores nothing.
Frequently asked questions
4 answers, no funnel.
How much rent do I owe if I move in on day 12 of a 30-day month?
You owe 19 of the month's 30 days, which is 63.3% of a full month. Divide the monthly rent by 30 to get the daily rate, then multiply by 19. On $1,800 rent that is $60.00 a day and $1,140.00 due.
What is the daily rent rate in a 30-day month?
The daily rate is the monthly rent divided by 30. On $1,500 rent it is $50.00 per day. A landlord using a flat 30-day basis instead would divide by 30, and one using the 365-day year would divide by 365 and multiply by 12.
Is a move-in on day 12 charged from that day or the whole month?
You are charged from the move-in day through the end of the month, both days inclusive, so 19 days here. The rest of the month, before you took possession, is not billed as regular rent.
How is prorated rent different from a full month?
A full month bills all 30 days. Moving in on day 12 bills only 19, so you pay 63.3% of a full month and save the other 36.7%.