Free tool
Prorated Rent Calculator
Figure out exactly how much rent to charge for a partial month when a tenant's lease starts or ends mid-month.
Situation
Proration is calculated using the actual number of days in the selected month (a common method, though some leases specify a flat 30-day month — check your lease terms).
Prorated rent
$0.00
Due for the partial first month
How rent proration works
When a tenant moves in or out partway through a month, most landlords charge rent only for the days the unit is actually occupied. The most common method divides the monthly rent by the actual number of days in that calendar month to get a daily rate, then multiplies that rate by the number of days owed.
Some leases instead use a flat 30-day month for every proration calculation, which gives a slightly different daily rate in months with 28, 29, or 31 days. Check your lease for a proration clause before billing a tenant — if the lease is silent, the actual-days-in-month method used here is the most defensible default.