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Prorated Rent Calculator
Tenants moving in or out mid-month typically owe prorated rent for the partial period. This calculator computes the prorated amount using actual days or the 30-day banker's convention.
Prorated rent
$770
Daily rate
$70.00
Days in partial month
11
How the math works
Prorated rent covers the partial first or last month of a tenancy. Most leases prorate using actual days in the month (daily rate = monthly rent ÷ days in month). Some use a 30-day banker's month for simplicity. Either method should be specified in the lease.
The 30-day convention slightly overcharges tenants in January/March/May/etc (31-day months) and undercharges in February. Actual-days method is fairer but requires lease clarity about which calculation applies.
How to Use
- Enter monthly rent.
- Enter days in move-in month.
- Enter move-in day.
- Pick day-count convention — actual days is fairest.
Frequently Asked Questions
Who pays prorated rent — tenant or landlord?
Tenant pays prorated rent at move-in. At move-out, if departing mid-month, tenant is usually responsible for rent through the lease termination date (not necessarily the physical vacate date). Read lease for specifics.
What if I move in on the 1st?
No proration needed — full month rent. Prorated rent only applies when move-in is mid-month.
Does proration affect the security deposit?
Generally no — security deposit is a flat amount, often one month's rent, regardless of prorated first payment. Some leases require full first month plus security at signing, then prorate the second month.
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