Every residential tenancy dispute in Ontario runs on forms published by the Landlord and Tenant Board (LTB) under the Residential Tenancies Act, 2006 (RTA): notices, applications and procedural requests. The complete list sits below this guide. Every entry opens a dedicated page: what that form does, which clocks apply, a field-by-field walk-through, and the slips that get it rejected.
The families in one table
| Letter | Purpose | Filed? |
|---|---|---|
| N | Rent increase notices and termination notices | Never filed; handed to the other party |
| L | The landlord's applications, L1 through L10 | Filed with the Board |
| T | The tenant's applications, T1 through T7 (landlord is respondent) | Filed with the Board |
| A | A1, A2 and A4, which either party may bring | Filed with the Board |
| Procedural | Certificate of Service, agreements, motions and requests | Usually filed |
What each family does
N notices
Rent increases use the N1 for most units. Care homes get the N3. A unit exempt from the increase rules gets the N2. An agreement to go above the guideline is the N10.
On the termination side:
- N4: rent not paid
- N5: overcrowding, damage or interference
- N8: rent persistently paid late, and other end-of-term grounds
- N12: the landlord or a purchaser wants the unit for their own use
- N13: demolition, repairs or conversion
A tenant ending things gives an N9; if both sides agree to end it, they sign an N11. Section 43 of the RTA sets the minimum for any termination notice: the approved form, the unit identified, the termination date stated, and a signature.
L applications
Landlords use these to ask the Board for an order. Two dominate: the L1, for unpaid rent, and the L2, which covers most other eviction grounds and money claims against a tenant still in possession. The L3 and L4 can be decided with no hearing. The L9 and L10 recover money while the tenancy carries on. An above-guideline increase is sought on the L5.
T applications
Tenants file these, for example the T2 (tenant rights), T5 (bad-faith notice) and T6 (maintenance), and the landlord answers them as respondent.
A applications
Either side may start one. Use the A1 to ask whether the RTA covers the arrangement at all, the A2 for a sublet or an assignment, and the A4 to vary a rent reduction.
Procedural forms
Proof of delivery goes on the Certificate of Service. Arrears updates go on the L1/L9 Information Update, and a negotiated plan on the Payment Agreement. There are requests to move a hearing date, to stretch or shorten a time limit, to amend an order or to review an order, plus motions such as the S3.
The usual order: notice, then application
First the N notice is served. Then the notice period runs out, along with any window the tenant has to correct things. Only then does the matching L application go in. Under s. 69 of the RTA, every eviction application needs a termination notice underneath it, and for any ground other than unpaid rent the landlord has 30 days from the notice's termination date to file. The Board's Rules of Procedure (Rule 6) name filing-time errors that lead to refusal; one is bringing an L1 before the N4 termination date has passed, or on that very day. Four landlord applications skip the notice stage entirely: the L3, L4, L9 and L10.
Tenants can use this sequence to read their position: a notice is not an order, and its dates are what any later application gets measured against.
Choosing the right form in four steps
- Decide what you want the Board to give you. Getting the unit back? Unpaid rent or some other sum? A higher rent? A decision on whether the Act even applies?
- Match that result to its legal ground and to the notice for that ground. Every form page lists the RTA section behind it.
- Count the dates before anything is served. The Board has no power to extend or shorten a notice period (O. Reg. 516/06, s. 56).
- Go through the official instructions, because Board staff compare each filing against them.
Navigate Tribunals Ontario will also suggest a form from your answers.
Where forms are filed, and old versions
A lower fee applies when six landlord applications are filed online through the Tribunals Ontario Portal: L1, L2, L3, L4, L9, L10. Most others are filed by email, mail, courier or at ServiceOntario; the fees are set out in LTB filing fees. Save the PDF to your computer and fill it in with Adobe Reader rather than inside a web browser.
Bill 60 and Bill 97 led the Board to replace ten forms on September 21, 2026: the L1, L2, L9, L10, N5, N6, N8, N12, N13 and T5. The same day brought an updated N4, now with a 7-day notice period, and a first-ever "Issues a Tenant Intends to Raise at a Rent Arrears Hearing" form. Tribunals Ontario says that from November 30, 2026, it will not accept the older versions of the replaced forms. Neither the N4 nor the Issues form appears in that sentence, and whether the deadline reaches them has not been confirmed. Download a fresh copy each time rather than reusing a saved one.
Frequently asked questions
Do notices like the N4 and N12 go to the Board?
Not on their own. The landlord serves them on the tenant, and the Board sees them only when the landlord later files an application with the notice and a Certificate of Service.
Is a form saved last year still usable?
Not for the ten forms replaced on September 21, 2026 (L1, L2, L9, L10, N5, N6, N8, N12, N13 and T5): from November 30, 2026, the Board turns away their old versions. For anything else, the new N4 included, get the current version regardless.
How do the L1 and L9 differ?
An L1 follows an N4 and asks for two things: termination and the arrears. An L9 asks only for the money and is used while the tenant remains in the unit.