Prorated Rent Calculator
Calculate partial-month rent for move-in or move-out. Free tool with formula and examples.
Rent Details
Quick presets:
Your result will appear here after you calculate.
How the Prorated Rent Calculator Works
- Enter your monthly rent — the full rent for a full month.
- Choose total days in the month — 28, 29, 30, or 31 (use the month you’re prorating).
- Enter days occupied — number of days you will occupy the unit (e.g. move-in on the 15th through end of month = 16 or 17 days depending on the month).
- Get your prorated amount — daily rate (rent ÷ days in month) × days occupied.
- Use the result for your first or last month’s payment; get the amount in writing in your lease or move-in/move-out paperwork.
Prorated Rent Examples
Example 1: Move-in on the 15th (30-day month)
Monthly rent $1,800. You move in on the 15th and stay through the 30th (16 days). Daily rate = $1,800 ÷ 30 = $60. Prorated rent = $60 × 16 = $960.
Example 2: Move-out on the 10th (31-day month)
Monthly rent $1,500. You occupy the first 10 days. Daily rate = $1,500 ÷ 31 ≈ $48.39. Prorated rent = $48.39 × 10 ≈ $483.90.
Edge Cases
- February: Use 28 or 29 days. Prorated amounts will be slightly higher per day in February than in a 31-day month.
- First and last month both partial: Calculate each period separately (different days-in-month and days-occupied).
- Rounding: Landlords may round to the nearest dollar or to two decimals; check your lease or local practice.
- Deposits: Security deposits are usually based on full-month rent; prorated rent does not change the deposit amount unless the lease says otherwise.
Prorated Rent FAQ
Move-in proration covers from your move-in date to the end of the month; move-out proration covers from the 1st to your move-out date. The formula is the same: daily rate × days occupied. Only the “days occupied” and the month length change.
Prorated rent = (Monthly rent ÷ Total days in that month) × Days you occupy. For example, in a 30-day month: daily rate = rent ÷ 30; multiply by the number of days you live there.
Usually no. Security deposits are typically set as a multiple of full monthly rent (e.g. one month’s rent). Your first or last month’s prorated amount is separate. Check your lease for how deposit and first/last month are defined.
Practices vary: some landlords round to the nearest dollar, others to two decimal places. Our calculator shows two decimals. Your lease or state/local norms may specify rounding; get the final amount in writing.
Related
- State lease agreements — add a prorated rent clause to your lease
- Late rent fee calculator — late fee limits by state
- Late rent notice — template for past-due rent
- Residential lease — build a full lease with prorated terms
- Templates — all document types
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