Ontario Security Deposit Laws

Key Takeaways

• No damage deposits allowed: Under Ontario’s Residential Tenancies Act, landlords can only collect a rent deposit equal to one rental period—and it can only be used for the last month’s rent.

• Strict interest and top-up rules: Landlords must pay annual interest on the deposit at the provincial guideline rate and properly account for any required top-ups after rent increases.

• Disputes go through the Board: Deposits cannot be withheld for damages; any claims for repairs or unpaid amounts must be pursued separately through the Landlord and Tenant Board.

In Ontario, residential landlords in Ontario are not permitted to collect traditional damage deposits. Instead, the law allows only a specific type of deposit known as a rent deposit, and even that is strictly regulated.

Understanding how Ontario’s rent deposit system works is essential for landlords who want to stay compliant and for tenants who want to understand their rights.

Rent deposits in Ontario are typically governed by the following principles:

• Used for last month’s rent only: A rent deposit may only be applied toward the final month of tenancy.
• Cannot be used for damages: Landlords are not allowed to apply a rent deposit to repair costs or property damage.
• Must follow strict amount and handling rules: The deposit amount and interest obligations are regulated under Ontario law.

Failure to follow these rules can lead to disputes or applications before the Landlord and Tenant Board.

If you need guidance managing rental property in Ontario while staying aligned with provincial regulations, E & S Property Management provides professional support tailored to local legal requirements.

A Guide to Ontario Rent Deposit Law

1. Ontario Rent Deposit Limit

In Ontario, landlords may collect a rent deposit equal to one rental period. In most cases, this means one month’s rent.

If rent is paid weekly, the deposit may equal one week’s rent. If rent is paid monthly, the deposit may equal one month’s rent. Landlords cannot collect more than this amount. 

Charging an additional security or damage deposit is not permitted under Ontario’s Residential Tenancies Act framework. The deposit must also be applied only to the final rental period and cannot be treated as general security.

2. Nonrefundable Fees

Ontario law does not allow nonrefundable security deposits for residential tenancies. Because landlords cannot collect damage deposits in the first place, there is no ability to label part of a deposit as nonrefundable for damages or cleaning. 

The rent deposit is strictly tied to the last rental period. Any additional upfront charges that resemble security or damage deposits would generally not be compliant. Clear lease drafting is important to ensure that only permitted deposits are collected.

While Ontario does not allow damage deposits, landlords may request a key deposit. This deposit must be reasonable and reflect the actual cost of replacing the keys or access devices. It cannot function as a hidden security deposit.

3. Storing a Tenant’s Rent Deposit in Ontario

Unlike some jurisdictions, Ontario does not require landlords to place rent deposits in a separate trust account.

Landlords are required to pay interest on the rent deposit annually. The interest rate is tied to the provincial rent increase guideline.

This interest must be paid to the tenant each year or credited toward the rent. In practice, many landlords apply the accrued interest to offset any rent increase that matches the annual guideline.

Even though the law does not mandate a specific account type, landlords remain responsible for properly accounting for the deposit and the interest owed.

4. Written Notice After Rent Deposit Receipt

Ontario law does not require a separate written notice confirming where the deposit is stored.

However, the lease agreement should clearly identify the amount collected as a rent deposit and confirm that it will be applied to the last month’s rent.

Providing written documentation protects both landlord and tenant by clarifying expectations at the beginning of the tenancy.

5. Reasons to Withhold a Tenant’s Deposit in Ontario

Ontario landlords cannot withhold a rent deposit for damages. This is one of the most important distinctions in Ontario rental law. A rent deposit is strictly reserved for the final rental period. It cannot be applied toward:

• Property damage
• Cleaning costs
• Unpaid utilities
• Repairs beyond normal wear and tear 

If a tenant causes damage or owes money beyond unpaid rent, the landlord must pursue those claims separately, typically through the Landlord and Tenant Board. The rent deposit’s sole purpose is to cover the last rental payment.

6. A Walk-Through Inspection

Ontario law does not mandate a formal move-out inspection process as a condition for returning a deposit, since the deposit is automatically applied to the final rent period.

Conducting move-in and move-out inspections remains a recommended best practice. Proper documentation of property condition helps protect landlords in the event they need to pursue a claim for damages separately.

Clear records can support an application to the Landlord and Tenant Board if compensation is sought for tenant-caused damage.

7. Rent Deposit Application and Refund Rules in Ontario

The rent deposit collected at the beginning of the tenancy is applied to the tenant’s last month of rent.

If the rent has increased over time, the tenant may be required to top up the deposit to match the current rent amount. When rent increases according to Ontario’s annual guideline, landlords may require the tenant to increase the rent deposit so that it equals the new rent amount. 

At the same time, landlords must account for interest owed on the original deposit. In many cases, the accrued interest is applied toward the required top-up amount.

At the same time, landlords must account for interest owed on the deposit. Interest accrues annually at a rate equal to the provincial rent increase guideline. Landlords must either pay this interest directly to the tenant or credit it toward the rent.

Because the deposit is used for the final month’s rent, it is not typically “refunded” unless specific overpayments or adjustments occur. Failure to properly account for the deposit or interest may result in disputes before the Landlord and Tenant Board. 

8. Change in Property Ownership

When a rental property in Ontario changes ownership, responsibility for the rent deposit transfers to the new owner.

The incoming landlord assumes responsibility for:

• Holding the rent deposit
• Accounting for interest
• Applying the deposit to the final rental period

Proper documentation during a property sale is important to ensure that the deposit amount and accrued interest are accurately transferred and recorded. Tenants should not lose their deposit simply because ownership changes.

Bottom Line

Ontario’s approach to security deposits is unique. Residential landlords are not permitted to collect damage deposits. Instead, they may collect a rent deposit equal to one rental period, which must be used only for the last month’s rent.

If you need assistance managing deposits, rent increases, or tenant relations in Ontario, working with a knowledgeable property management company such as E & S Property Management can help simplify the process and ensure compliance.

Disclaimer: Please note that the information provided in this blog is intended for general guidance and should not be considered as a replacement for professional legal advice. It is important to be aware that laws pertaining to property management may change, rendering this information outdated by the time you read it.