Prorated Rent Calculator

For mid-month move-in or move-out. Pick a method, enter the rent, and the dates — get the partial-month rent owed.

How prorated rent works

When a tenant moves in mid-month, you charge them for only the days they actually occupy the unit that month. The math is simple:

Prorated rent = (monthly rent ÷ days in month) × days occupied

Three common methods

Actual-days method: Divide rent by the calendar days in that specific month. February uses 28 (or 29), March uses 31. Most accurate.

Banker's method (30-day): Always divide rent by 30. Simpler for accounting; slightly favors the tenant in 31-day months.

365-day method:Daily rate = monthly rent × 12 ÷ 365. Sometimes used for very precise long-term commercial leases.

Best practices

State which method you'll use in the lease (“rent shall be prorated using the actual-days method”). Show the math on the move-in receipt so the tenant can see it. PropertyNinja's lease generator includes a proration clause by default.