In Ontario, landlords must pay annual interest on a tenant’s Last Month’s Rent (LMR) deposit, at a rate exactly equal to the provincial rent increase guideline for that year. If your rent increases, the landlord usually applies this interest to “top up” your deposit; if not, they must pay you directly. If they refuse, filing a T1 application at the LTB currently costs $53 CAD online.
When you first sign a lease in Toronto, Ottawa, or any other city in Ontario, handing over the Last Month’s Rent (LMR) is a standard procedure. This significant deposit is held by the property owner to cover your final month of tenancy. However, many renters and inexperienced landlords do not realize that this money does not just sit in an account idly. Under the Residential Tenancies Act (RTA), the landlord is legally obligated to pay the tenant interest on this deposit every single year.
The rules surrounding this interest payment are often misunderstood, leading to unnecessary conflicts between renters and property owners. 🚨 The calculation is strictly tied to the provincial government’s annual economic guidelines, meaning the rate changes from year to year. Generally, understanding how this interest is calculated-and how it is usually paid out or deducted-is an essential part of protecting your financial rights as a tenant in Ontario.
Step-by-Step Process for Calculating and Claiming LMR Interest in Ontario
Securing the interest owed to you requires basic math and a clear understanding of provincial tenancy laws. Here is how most tenants across the province successfully navigate this calculation and ensure their landlord complies with the Residential Tenancies Act.
Step 1: Verify Your Original Deposit Amount
Before you can calculate any interest, you must look at your original Ontario Standard Lease. 🔍 Locate the exact amount you paid for your Last Month’s Rent deposit when you first moved in. Note that a landlord in Ontario can only legally ask for a deposit equal to one month’s rent (or one week’s rent if you pay weekly). Damage deposits and security deposits are illegal in this province.
Step 2: Check the Provincial Rent Increase Guideline
In Ontario, the interest rate owed on your deposit is exactly the same as the annual rent increase guideline set by the Ministry of Municipal Affairs and Housing. For example, if the rent increase guideline for the current year is 2.5%, the interest owed on your deposit is also 2.5%. You must look up the official guideline percentage for the specific year in which the interest is due.
Step 3: Understand the “Top-Up” Mechanism
This is where most confusion occurs. If your landlord legally raises your rent by the guideline amount, they are allowed to ask you to “top up” your LMR deposit so it matches the new rent amount. 💰 Because the interest owed to you is identical to the rent increase guideline, the two amounts cancel each other out. In this very common scenario, no money changes hands; the landlord simply applies your owed interest directly to the deposit to top it up.
Step 4: Demand Payment if Rent is Not Increased
If your landlord decides not to increase your rent for the year, they cannot simply keep the interest. They are legally required to pay you the calculated interest amount. You can ask them to send you the funds via e-transfer or cheque, or you can mutually agree to deduct that specific amount from your next regular rent payment. It is highly advised to make this request in writing to maintain a paper trail.
Step 5: File a T1 Application at the LTB
If your landlord outright refuses to pay the owed interest or denies that the rule exists, you have a formal legal remedy. 🗂 You can file a T1 Application (Tenant Application for a Rebate of Money the Landlord Owes) with the Landlord and Tenant Board (LTB). An adjudicator will review your lease and the annual guidelines, and can issue a binding order forcing the landlord to pay the accumulated interest.
How Much Does it Cost in Ontario?
Enforcing your right to LMR interest is designed to be accessible for all renters. As of May 2026, the financial costs to pursue this at the Landlord and Tenant Board in Canadian dollars (CAD) are as follows:
- Direct Negotiation: Calculating the math and sending an email to your landlord costs $0 CAD.
- LTB Online Filing Fee: Submitting a T1 application through the Tribunals Ontario Portal costs $53 CAD.
- LTB Paper Filing Fee: Filing physical documents at a ServiceOntario centre increases the fee to $65 CAD.
- Fee Waivers: If you are a low-income tenant or receive social assistance, you can submit a fee waiver request, potentially reducing your LTB costs to $0 CAD.
- Cost Recovery: If you win your T1 hearing, the adjudicator will generally order the landlord to reimburse your $53 CAD filing fee.
How Long Does the Process Take?
The timeline for resolving an interest dispute depends entirely on your landlord’s cooperation. 🕕 A polite written reminder can resolve the issue in a few days. However, if you are forced to file a formal T1 application, you must enter the LTB queue. Due to ongoing provincial backlogs, securing a digital hearing date for a tenant application typically takes between 6 to 10 months. Because of this long wait, many tenants choose to simply deduct the owed interest from their next rent payment, though you should seek legal advice from a paralegal before withholding any rent.
Frequently Asked Questions (FAQ)
Does my landlord owe me interest if I move out after a few months?
Yes. Interest is prorated. If you lived in the rental unit for 6 months, the landlord owes you the interest calculated for that 6-month period before they apply your LMR deposit to your final month’s rent.
What if my building is exempt from rent control?
If your building was first occupied for residential purposes after November 15, 2018, it is exempt from the rent increase guideline. However, the landlord still owes you interest on your LMR deposit. The interest rate remains tied to the provincial guideline percentage, regardless of how much they raise your actual rent.
Can the landlord hold a pet deposit instead of LMR?
No. In Ontario, pet deposits, key deposits (exceeding actual replacement cost), and damage deposits are strictly illegal. The only significant deposit a landlord can legally hold is the Last Month’s Rent.
How far back can I claim unpaid LMR interest?
You can apply to the LTB for unpaid interest, but the Residential Tenancies Act generally places a strict one-year limitation period on most tenant applications. You should file your T1 application within 12 months of the date the interest was legally due.
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