Pick the proration method in your lease, enter the rent and the move date, and get the exact partial-month amount with the arithmetic shown.
Prorated rent
$387.10
Monthly rent
$2,000.00
Daily rate
$64.52
Days charged
6 of 31
Method
31-day month
Amount due
$387.10
$2,000.00 basis → $64.52/day × 6 days = $387.10
This is an estimate for planning only. It is not legal, financial, tax, or underwriting advice. Your lease terms and state or local law control what you can actually charge or require.
Post prorated rent straight to a tenant ledger in Ayillo
Actual days in the month: monthly rent ÷ the real number of days in that month × days occupied. The most common and the easiest to explain.
30-day month: monthly rent ÷ 30 × days occupied, regardless of the calendar. Slightly favours the tenant in a 31-day month.
Banker's / 365-day: annual rent (monthly × 12) ÷ 365 × days occupied. Produces a consistent daily rate all year.
Whichever you use, name it in the lease. Disputes over a partial month almost always come from the method never being written down.
Move-in vs move-out
For a move-in, the tenant pays for the move-in date through the last day of the month. For a move-out, they pay from the first of the month through the move-out date. Check whether your lease treats the final day as occupied — most do.
Frequently asked questions
Which proration method should I use?
Whichever your lease states. If you are drafting a new lease, actual days in the month is the easiest for tenants to verify and the least likely to be disputed.
Do I prorate the security deposit too?
No. Deposits are not prorated. Only rent for the partial period is.