Ontario LTB Form L10: Money a Former Tenant Owes
Understand when this application applies, how to fill it out, what it costs, and what happens next.
Use Form L10 to seek money from someone who has already moved out of the rental unit. It covers eligible unpaid rent, utilities, damage and certain other losses. File within one year after the former tenant moved out; the LTB requires special service of the application and hearing notice.
This page explains the official LTB application in plain language. It does not file the application or replace the government form.
What money can you claim?
- Unpaid rent and compensation for occupation after termination, if relevant.
- Permissible NSF cheque-related charges.
- Unpaid heat, electricity or water costs for which the former tenant was responsible.
- Compensation for damage and eligible substantial interference expenses, supported by evidence.
The LTB’s general monetary-order claim ceiling is $50,000. A higher claim may require using the courts rather than seeking only a partial LTB order.
Complete L10 step by step
- Part 1: identify the former rental unit. Record the actual move-out date and make sure the one-year application window remains open.
- Part 3: give landlord and former-tenant identities. If known, provide the former tenant’s current address and contact information—not the old rental address as a substitute.
- Part 4 and claim tables: select each kind of loss claimed and itemize the relevant periods, invoices, repairs, utility amounts and payments.
- Totals and signature: calculate each category accurately, record the application fee and sign the form. Avoid charging the same item twice.
- Filing: submit using the Tribunals Ontario Portal ($186 published fee) or an accepted offline filing option ($201 published fee).
Worked example
A tenant moves out on March 31, 2026, leaving $700 in rent owing and an unpaid $120 hydro bill supported by the lease and utility invoice. An L10 must generally be filed no later than one year after move-out. The landlord itemizes $820 in claimed principal, plus any recoverable filing fee, and retains the evidence. The LTB—not the landlord—decides the amount owing.
Serving the former tenant: special deadlines
The landlord must give the application and Notice of Hearing to each former tenant at least 30 days before the hearing. After service, submit the designated Certificate of Service at least 20 days before the hearing. If ordinary methods cannot work, request alternative service at least 40 days before the hearing. These are distinct deadlines and missing them can jeopardize the application.
Use the former tenant’s present residence or other method allowed in the LTB instructions. Do not serve papers by leaving them at the rental unit the person has already vacated. Email has additional consent and proof-of-receipt conditions.
Common mistake
A on-time L10 filing alone is not enough. Plan the later 30-day service and 20-day Certificate of Service deadlines as soon as the hearing is scheduled.
Updated form edition (September 2026)
Tribunals Ontario lists L10 among the forms updated effective September 21, 2026; older versions cease to be accepted after November 30, 2026. Obtain the current L10 from the official forms page rather than relying on a previously saved PDF. See the LTB operational update.
Related Ontario resources
Official sources
Official sources
- Tribunals Ontario — official Form L10 PDF
- Tribunals Ontario — L10 instructions
- LTB — current forms, filing methods and fees
- LTB — application and hearing process
- Ontario — Residential Tenancies Act, 2006
Official instructions and filing fees checked October 13, 2026. This is general legal information, not legal advice. Check the current form and any case-specific requirements before acting.