Free Legal Tool

Prorated Rent Calculator

Calculate the exact rent owed for a partial month at move-in or move-out — using either the actual-days or fixed 30-day method.

Estimate only — not legal advice. Your lease may specify a particular proration method.
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Rent Details
Prorated Rent Results
Enter your rent and date, then click Calculate Prorated Rent.
Quick Answer

Prorated rent is the partial rent owed when a tenant occupies a unit for only part of a rental period. In Ontario it is normally calculated by dividing the monthly rent by the number of days in that month, then multiplying by the number of days occupied. Rent is due on the first day of each rental period unless the lease says otherwise, and a landlord cannot charge more than the lawful rent for the unit.

📋 About Proration Methods
Actual-days method divides the monthly rent by the real number of days in that specific month (28-31), giving a daily rate that varies slightly month to month. This is the most common and generally the fairest default absent a different lease term.
Fixed 30-day method always divides monthly rent by 30, regardless of the actual month length. Some leases specify this method for simplicity — it produces a slightly different (sometimes higher, sometimes lower) result than the actual-days method depending on the month.
The Residential Tenancies Act does not mandate a specific proration formula — the method used is generally whatever the lease specifies, or what the landlord and tenant agree to. Check your lease agreement first.
📅

Move-In Prorating

You typically owe prorated rent from your move-in date through the end of that calendar month.

📤

Move-Out Prorating

If your notice period ends mid-month, you may owe prorated rent only through your actual move-out date, depending on your agreement.

📃

Check Your Lease First

Many standard-form leases specify the proration method in the additional terms section.

💵

First Month Isn't Always Full Rent

Landlords often collect prorated first-month rent plus a full last month's rent deposit at move-in.

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