The Renter's Ledger
See what your first or final partial-month rent may be under each common calculation method.
Estimated first partial-month rent
$929.03Based on 12 chargeable calendar days from August 20, 2026 through August 31, 2026, using a 31-day divisor.
Check your lease
Look for clauses about “proration,” “daily rent,” “30-day month,” or “first month's rent.” This calculator compares the arithmetic; it does not decide which method your lease requires.
Unsure which method your lease specifies? Check the relevant clause with LeaseGuard.Prorated rent = monthly rent / days used by the method x chargeable days.
Leases may define a month differently. Some divide rent by the actual days in the calendar month; others use a fixed 30-day month.
The method can change your first month's rent even when the rent and move-in date stay the same.
The 30-day method produces $960. The 31-day method produces about $929.03.
If rent is charged through September 25 on a $1,800 lease, the actual-calendar estimate is $1,500.
A shorter divisor creates a higher daily rate. Your lease should identify the applicable method.
It depends on the lease and applicable rules. This tool shows both methods plus the actual number of days in the selected month.
Yes. Choose Moving out, enter the physical move-out date and the last chargeable date, and the estimate will count from the first day of that month through the last chargeable date.
Calendar-day calculations normally include weekends. Confirm the wording in your lease before relying on a result.
Sometimes utilities or recurring fees are prorated separately. This calculator estimates base rent only.
Last reviewed August 8, 2026 · This calculator provides an informational estimate and is not legal, financial, tax, or housing advice.
