Prorated Rent Calculator

Calculate daily rent for partial months when you move in or out mid-cycle so you pay only for the days you occupy the unit.

Your details

Quick presets:

Your full monthly rent amount
Number of days you will occupy the property

Example: If you move in on the 15th of a 30-day month, you would occupy the property for 16 days (15th through 30th).

Your result

$0

Prorated rent: the amount due for the partial month

Monthly rent
$0
Daily rate
$0
Days occupied
0 days
Savings vs full month
$0
Percentage of month
0%

The daily rate is monthly rent ÷ days in month, shown rounded. The prorated rent is rounded once, at the end.

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How this calculator works

Prorated rent = monthly rent × days occupied ÷ days in month, rounded to the cent once, at the end. Daily rate = monthly rent ÷ days in month.

Inputs

  • Monthly rent — full rent for the calendar month.
  • Days in month — 28–31 depending on move month.
  • Days occupied — count move-in day through move-out day per lease convention.

Assumptions

  • Landlord uses a daily proration method (most common in residential leases).
  • Proration applies to base rent only, not fixed fees or utilities.
  • Move-in/out day counting follows your lease (often inclusive of move-in day).

Limitations

  • Some landlords use a 30-day banker's month regardless of calendar days.
  • Second partial month at move-out may need a separate calculation.
  • Rent control units may have specific proration rules.

Example calculation

  1. Rent $1,800, moving in March 15 in a 31-day month.
  2. Days occupied March 15–31 = 17 days.
  3. Prorated rent = $1,800 × 17 ÷ 31 = $987.10.
  4. Savings vs full month = $1,800 − $987.10 = $812.90.
  5. Rounded once, to the cent, at the end. The daily rate ($1,800 ÷ 31 ≈ $58.06) is shown rounded for reference only.
Result: $987.10 prorated rent for 17 days in March

Proration prevents paying a full month when you occupy only part of it. Confirm whether your lease counts the move-in day and which month length is used.

Common mistakes

Using 30 days for every month

Dividing by 30 when the month has 31 days overcharges you slightly. Use the actual days in the move month.

Forgetting move-out proration

If you leave mid-month, you may owe prorated rent for days occupied or pay full month if notice was late—check your lease.

Paying full month plus proration

First month should be either prorated or full—not both. Review your lease ledger before paying.

Frequently asked questions

  • When a tenant moves in or out mid-month and the lease calls for paying only for days of occupancy.

  • Many states imply proration for partial months, but some leases require full first month regardless—read your contract.

  • Leases vary: some include move-in day, others start billing the next day. Ask before signing.

  • No. Daily rent is monthly rent ÷ days in the month. Prorated rent is monthly rent × days occupied ÷ days in the month, rounded once to the cent, so it can differ by a few cents from a rounded daily rate multiplied by the days.

  • Usually not—utilities are often billed separately by usage period or flat fees.

  • Yes, especially when aligning move-out with lease end. Get any agreement in writing.

Disclaimer

LeaseCraft provides document automation and general information — not legal, tax, or financial advice. Calculator results are estimates for planning only. Consult a licensed attorney, accountant, or housing counselor for advice about your situation.