Prorated Rent Calculator

When tenants move in or out mid-month, calculating the exact amount they owe requires prorating the rent. This ensures fair billing for both landlords and tenants.

Our prorated rent calculator uses the daily rate method—the most common and legally accepted approach. Simply divide monthly rent by days in the month, then multiply by occupied days.

Whether handling a new lease starting on the 15th or processing a move-out on the 20th, get the exact prorated amount in seconds. No more manual calculations or disputes over partial month charges.

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How to Use This Calculator

1 Enter the full monthly rent amount
2 Select or enter the tenant's move-in or move-out date
3 Choose the number of days in the month (30 or actual)
4 Click Calculate to see the prorated amount due
5 Use this amount for the partial month billing

Formula

Daily Rate = Monthly Rent ÷ Days in Month
Prorated Rent = Daily Rate × Days Occupied

Example Calculation

A tenant moves in on the 15th with monthly rent of $1,500

Inputs:

Monthly Rent: $1,500
Move-in Date: 15th
Days in Month: 30

Result:

Prorated rent = $1,500 ÷ 30 × 16 days = $800

Pro Tips

Use 30 days for simplicity or actual days for precision
Include move-in day in the count
Document the calculation method in your lease

Important Considerations

• Leap year February has 29 days—decide your policy in advance
• Move-ins on the 1st don't require proration
• For move-outs, prorate based on actual days occupied

Frequently Asked Questions

Divide monthly rent by days in the month to get the daily rate, then multiply by the number of days the tenant will occupy the unit. For a move-in on the 15th in a 30-day month, you'd calculate: (Monthly Rent ÷ 30) × 16 remaining days.

Both methods are legally acceptable. Using 30 days simplifies calculations and keeps rent consistent. Using actual days (28-31) is more precise. Choose one method and document it in your lease agreement for consistency.

Yes, the move-in day is typically counted as an occupied day since the tenant has possession. If a tenant moves in on the 15th in a 30-day month, they occupy 16 days (15th through 30th).

While not universally required, prorated rent is standard practice and expected by tenants. Charging full rent for partial occupancy could lead to disputes. Most leases include proration terms.