Prorated Rent Calculator
Moving in or out mid-month? Prorated rent charges only for the days the tenant has the unit. Pick the method your lease uses; the three common methods give slightly different answers.
New Added
Results
Prorated rent
$800.00
Prorated rent is $800.00 for 16 days at $50.00 per day.
| Days charged | 16 |
|---|---|
| Days in month | 30 |
| Daily rate | $50.00 |
Estimate only. Not legal or financial advice.
How this calculator works
Move-in proration charges from the move-in day through the last day of the month, inclusive. Move-out proration charges from the 1st through the move-out day, inclusive.
Actual-days divides rent by the days in that month. 30-day divides by 30 and charges at most 30 days. 365-day uses rent × 12 ÷ 365 as the daily rate.
Results are capped at one full month's rent.
Formulas
Actual: rent ÷ days in month × days charged30-day: rent ÷ 30 × min(days charged, 30)365-day: rent × 12 ÷ 365 × days charged Assumptions & limits
- Both the move-in day and the move-out day are counted as occupied days. Your lease may specify otherwise.
- Some states regulate how final-month rent and notice periods interact; check your lease and local law.
Assumptions last reviewed 2026-10-18.
Disclaimer: This calculator provides estimates for educational purposes only and is not legal, tax, lending or financial advice. Results depend on your inputs and simplifying assumptions. Confirm with a qualified lender, attorney, CPA or title/escrow professional before making decisions.
Frequently asked questions
How do you calculate prorated rent?
Divide the monthly rent by the number of days in the month (or 30, or use an annual daily rate), then multiply by the number of days the tenant occupies the unit that month.
Is the move-in day included in prorated rent?
Usually yes. This calculator counts the move-in day (and the move-out day) as charged days. Follow your lease if it says otherwise.
Prompts that pair with this calculator
Lease Renewal Offer Letter
New AddedWrite a clear, respectful lease renewal offer with the new rent, term options, a brief reason for any increase and a response deadline.
Move-Out Instructions & Deposit Itemization Letter
New AddedDraft move-out instructions for a departing tenant and an itemized security deposit disposition letter, with a reminder to check state deadlines.
Rent Reminder & Late Notice Writer
New AddedWrite status-aware rent messages (upcoming, due today, past due, paid thank-you) that stay professional, plus a verify-before-you-send checklist.
Related calculators
Rent Late Fee Calculator
New AddedCalculate a rent late fee from your lease terms: flat or percentage fee, grace period, daily fees and caps. Math only; check your state and local limits.
Security Deposit Return Deadline by State (coming soon)
A state-by-state security deposit return deadline lookup is coming soon to DoorPrompts after legal review. Get notified when it launches.