Disputing Arrears or Back Rent as a Tenant in Ontario

Rent & Deposits Ontario published June 10, 2025 Flag of Ontario

Falling behind on rent can be stressful, but Ontario tenants have clear rights and processes for disputing arrears or back rent. Understanding your options can help you respond if your landlord claims you owe money or files for eviction. This guide explains the steps to dispute arrears, which forms to use, and where to get official help under Ontario law.

What are Rent Arrears and Back Rent?

Rent arrears, or back rent, refer to any rent that is overdue and unpaid according to your rental agreement. If your landlord claims you owe rent, they must follow the processes outlined by Ontario’s Residential Tenancies Act, 2006[1].

How Landlords Make a Claim for Arrears

In Ontario, if you fall behind on rent, landlords typically:

  • Issue a written notice (Form N4: Notice to End your Tenancy Early for Non-payment of Rent) stating the amount owed and a deadline to pay.
  • If you do not pay or dispute the notice by the deadline, the landlord may apply to the Landlord and Tenant Board (LTB) for an eviction order and/or a judgment for the arrears.

This process is formal and subject to provincial rules — tenants have a right to respond and present their side.

Common Reasons to Dispute Arrears

  • Payment was made but not credited properly
  • Landlord is charging illegal fees or rent outside of your signed rental agreement
  • Unsafe or unlivable rental conditions prevented proper payment (note: legal advice is strongly recommended in these situations)
  • Issues with rent receipts, errors in calculation, or misunderstanding of what is owed

If any of these situations apply, gathering evidence and communicating in writing is essential.

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Your Right to Respond: Key Forms and Processes

Form N4: Notice to End Your Tenancy Early for Non-payment of Rent

Your landlord must use Form N4 for non-payment of rent. It will state:

  • How much is claimed as outstanding
  • The deadline to pay before the landlord can apply for eviction (usually 14 days for monthly rent)

You can view the official form and instructions on the LTB’s Form N4 page.

Form L1: Application to Evict a Tenant for Non-payment of Rent and to Collect Rent the Tenant Owes

If the deadline passes and the landlord applies to the LTB, they will use Form L1. You have the right to file a response and attend the LTB hearing. Check your notice of hearing for dates and instructions.

Form T6: Tenant Application about Maintenance

If you have not paid some or all rent due to serious unresolved maintenance issues, you may want to file Form T6: Tenant Application about Maintenance. This form allows you to raise repair issues officially and ask for a rent abatement.

  • Download and learn more about Form T6 via the LTB site.

Consider seeking legal advice or support from a tenant advocacy organization if you are withholding rent due to maintenance or repair issues. Prepare all written communications and evidence about the problem.

How to Dispute Rent Arrears at the Landlord and Tenant Board

The LTB is the official tribunal for most residential rental disputes in Ontario. When a landlord files an application for arrears, tenants have the right to:

  • File a written response outlining your side
  • Collect receipts, statements, or proof of payment
  • Attend the hearing (online or in person) and explain your position
  • Raise issues such as repair problems, disagreement over amounts owed, or errors in the landlord’s notice

The board will review all evidence before making a decision. The process may differ if you live in subsidized or social housing — check with the LTB for details.

Helpful Tips for Tenants Facing Arrears Claims

Additional Rights and Resources for Ontario Tenants

Tenants are protected by Tenant Rights in Ontario, which covers arrears, payment disputes, and more. For other common issues, see Common Issues Tenants Face and How to Resolve Them.

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  1. What happens if I pay the arrears after receiving an N4 notice?
    If you pay the full amount stated in the N4 notice on time, the notice is void and your tenancy continues. Always get a written receipt from your landlord confirming payment.
  2. Can a landlord charge extra fees along with back rent?
    Landlords in Ontario cannot add late fees or penalties to arrears unless they are explicitly allowed by the Residential Tenancies Act or your lease. Only the actual rent owed may be claimed.
  3. Do I have to attend an LTB hearing if my landlord applies for eviction over arrears?
    Yes, attending your hearing is critical. If you do not attend, the Board may make a decision without your input, including ordering eviction or payment.
  4. Can I stop paying rent if repairs aren’t done?
    Withholding rent is risky. Instead, consider filing a T6 application with the LTB and continue paying your rent while the issue is resolved, unless you receive legal advice to do otherwise.
  5. Where can I get help if I disagree with the arrears amount?
    Contact a local legal clinic, tenant advocacy group, or the Landlord and Tenant Board for support. Keep all documentation and act quickly when you receive any notices.

Conclusion: What Ontario Tenants Should Remember

  • Tenants have rights to dispute rent arrears and present evidence to the LTB.
  • Always respond promptly to N4 or L1 notices and keep good written records.
  • Use official forms and get support from legal clinics if you are unsure of what to do.

If you need to challenge arrears or dispute a landlord’s claim, understanding the process and using the right forms makes a difference.

Need Help? Resources for Tenants


  1. Residential Tenancies Act, 2006
  2. Landlord and Tenant Board (Ontario)
  3. LTB Forms and Applications
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Canada

Bob writes and reviews tenant law content for various regions. They’re passionate about housing justice and simplifying legal protections for tenants everywhere.