N4 vs L1 in Ontario: which form do you need for unpaid rent?

If your tenant has stopped paying rent and you are searching N4 vs L1, the answer is almost always the same: both, in that order. The N4 is the notice you serve on your tenant. The L1 is the eviction application you later file at the Landlord and Tenant Board (LTB). One does not replace the other, and you cannot skip the N4 and jump straight to the L1.

The confusion is fair though. Both forms come from the same source (the LTB), both deal with the same problem (unpaid rent), and both have the same goal in mind (eventually ending the tenancy). The difference is where each one lives in the timeline and what each one legally does.

What the N4 is, in one paragraph

The N4 (full name: Notice to End a Tenancy Early for Non-payment of Rent) is a notice you fill out and serve on your tenant, authorized by section 59 of the Residential Tenancies Act, 2006. It tells the tenant the exact dollar amount owing, a termination date at least 14 days in the future (for monthly rentals), and gives them a chance to void the notice by paying the full amount before that date. You do not file the N4 with the LTB. The N4 lives between you and the tenant.

If the tenant pays in full before the termination date, the N4 is automatically void under RTA s.59(3) and the tenancy continues as if nothing happened. If they do not pay and do not move out, the N4 becomes the basis for everything that comes next.

For a box-by-box walkthrough of how to actually fill the form out, see our separate guide on how to fill out an N4 in Ontario, step-by-step.

What the L1 is, in one paragraph

The L1 (full name: Application to Evict a Tenant for Non-payment of Rent and to Collect the Rent the Tenant Owes) is a formal application you file with the LTB after the N4 termination date has passed and the tenant still has not paid. It costs $186 to file as of 2026 and triggers a hearing where both you and the tenant get to present evidence. The LTB then issues an order — typically either an eviction order (with a rent-arrears component) or a payment plan that conditionally avoids eviction.

The N4 is the trigger. The L1 is the actual legal proceeding.

N4 vs L1 side-by-side

The correct order: N4 first, L1 second

You cannot file an L1 unless you have already served an N4 and the termination date on that N4 has passed. The LTB will refuse the L1 — and your $186 filing fee won’t come back. The LTB’s Rules of Practice (and Interpretation Guideline 11) require the N4 plus a completed Certificate of Service to be attached to the L1 as proof of valid service.

So the practical sequence looks like this:

1. Day 0: Rent is missed. You decide to start the process.
2. Day 1: Serve the N4 on the tenant. Termination date on the form is at least 14 days from the date of service (more if you mail it — add 5 days under RTA s.191(3)).
3. Day 15 (or later): Termination date arrives. If the tenant has paid in full, the N4 is void and you are done. If they have not paid, move to step 4.
4. Day 16: File the L1 with the LTB. Attach the N4 and the Certificate of Service. Pay the $186 fee.
5. Day 16 to ~6 months: Wait for the LTB to schedule and hold the hearing.
6. Hearing day: Present your evidence. Tenant presents theirs.
7. ~30 days after the hearing: The LTB issues an order. If it is an eviction order, the Sheriff (now the Court Enforcement Office) is the one who actually does the lockout — not you.

Five mistakes that kill the case at the L1 hearing

1. Wrong amount on the N4. The N4 is strictly for rent under RTA s.59. Including late fees, NSF charges, parking, utilities, or damages makes the notice invalid and the LTB will refuse the L1.
2. Wrong termination date. The math: at least 14 days for monthly, plus 5 days if you served by mail. Off by even one day and you start over.
3. Filing the L1 too early. The L1 can only be filed the day after the termination date. Many landlords file on the termination date itself, the LTB rejects it, and the case starts over.
4. Missing or wrong Certificate of Service. The L1 requires proof of how and when the N4 was served. The LTB rejects L1 applications without a properly completed Certificate of Service.
5. Skipping a co-tenant. If two adults are on the lease and the N4 names only one of them, the notice is void. Both tenants’ legal names have to appear and match the lease.

What if the tenant pays after you serve the N4?

Two cases:

If the tenant pays the full amount before the termination date (the date written on the N4), RTA s.59(3) makes the N4 automatically void. The tenancy continues as if you never served the notice. You don’t need to do anything — the law does the cancellation for you.

If the tenant pays after the termination date but before the LTB issues an order, RTA s.74(2) discontinues the L1 application — the tenant has to pay the rent owing plusany additional rent that has come due, plus the $186 filing fee you paid. If they do, the eviction stops. If you have already filed, you do not get your filing fee back (the tenant does, in effect, pay it).

After the LTB issues an order at the hearing, the tenant has one more chance to stop the eviction — the “void the order” right under RTA s.74(4). They have to pay the full amount of arrears, additional rent owed, and the $186 filing fee, to the landlord or the LTB, before the order becomes enforceable. If they manage that, the order is void and the tenancy continues. If they miss that window but pay before the order is actually executed (the Court Enforcement Office hasn’t done the lockout yet), they can still move to void but the motion is referred to a hearing.

Realistic costs and timelines in 2026

Here is what the process actually looks like end-to-end this year, with no padding:

• N4 serving cost: $0 (you do this yourself).
• L1 filing fee: $186 paid to the LTB.
• Time from L1 filing to hearing: Roughly 3–6 months in 2026 per the LTB’s own scheduling data, down significantly from the 8–10 month backlog of 2023. Toronto and the GTA still tend to be slower than Northern and Eastern regions.
• Time from hearing to written order: Roughly 30 days, sometimes longer.
• Time from order to enforcement: The tenant has ~11 days from the order to move out (or pay to void). After that, you can file with the Court Enforcement Office for an actual eviction date, which typically takes another 4–6 weeks.
• Total elapsed time: 6 to 12 months from first missed rent payment to keys-in-hand is the realistic range. Plan accordingly.

During that whole period you are not collecting rent from this unit. If the tenant ultimately doesn’t pay the arrears the LTB ordered, your recourse is the order itself (it can be enforced through Small Claims Court like any other judgment debt). Practical collection rates after eviction are notoriously low — assume zero and treat anything you actually recover as upside.

When you also need an L2 (less common)

If, in addition to unpaid rent, the tenant has caused damage, substantially interfered with others, or committed an illegal act, you may also want to file an L2 (Application to End a Tenancy and Evict a Tenant) alongside the L1. The L2 is a separate application tied to N5, N6, N7, or N8 notices — not the N4. You don’t need an L2 for ordinary non-payment cases. If you’re unsure, an Ontario paralegal can review the file before you file anything.

Stop filling these by hand

The N4 and the Certificate of Service are repetitive, error-prone forms with strict box-counting rules. The vast majority of L1 cases that get thrown out at the LTB are killed by an arithmetic mistake on the N4, not by anything the tenant did. Use our LTB form generator to produce a pre-filled N4 from your active lease — names, address, monthly rent, and the termination date are calculated automatically against RTA s.59 + s.191. You can also track every filing deadline on one page so the “filed too early” mistake stops happening to you.

Sources: LTB form library and current filing fees — tribunalsontario.ca/ltb/forms. Full RTA text (s.59 governs the N4, s.69 / s.74 / s.87 govern L1 proceedings): ontario.ca/laws/statute/06r17. LTB filing fees: tribunalsontario.ca/ltb/forms-filing-and-fees.

Important: Nest Mate is not a law firm and this guide is not legal advice. If your case involves possible defences (illegal rent increase, retaliation, harassment, repair issues), or if the tenant has filed a counter-application, talk to a paralegal, ACTO, or your local legal aid clinic before filing anything.