Lowering Your Rent in Ontario: The T3 Application for Lost Services or Lower Taxes

Form T3 asks Ontario's Landlord and Tenant Board (LTB) for a rent cut on one of two bases. Either the landlord removed or shrank a service or facility, or the building's municipal property tax bill fell. The landlord answers the application. Because O. Reg. 516/06 supplies formulas for working out any reduction, the case usually comes down to the landlord's cost records and the tax bills.

Summary table

Two grounds

A service or facility was cut (s. 130)

The tenant's complaint here is that something supplied with the unit or the building has been reduced or taken away. Think parking, a storage locker, a laundry room, a pool, or cable that used to be included. Someone who has since moved out can still apply, as long as they were affected while living there.

The Board has three tools under s. 130(3): lower the rent, order the landlord to rebate rent collected unlawfully, or, where the cut was temporary, reduce the rent for a fixed stretch of time. Whatever it orders runs from the day the cut began (s. 130(4)).

Municipal taxes went down (s. 133)

A current tenant can apply because the municipal taxes and charges on the complex have decreased. Don't confuse this with the automatic rule. A tax decrease above 2.49% lowers rents by operation of law (s. 131; O. Reg. 516/06, s. 41), with no application at all, and for bigger buildings the municipality sends notices to the landlord and every tenant.

What a T3 won't do

• Reduce rent for disrepair. That's a T6.
• Get back an illegal charge. That's a T1.
• Address cuts to meals or care services in a care home; that is off-limits on this form.

Other forms that may fit better

Where a service was switched off as a pressure tactic, the issue is the landlord's conduct, and the tenant should file a T2. Where someone (landlord or tenant) disputes the size of the automatic s. 131 tax reduction, the challenge is made on an A4 under s. 132.

Time limits

Service cuts. Twelve months is the outer limit, measured from the day the service was reduced or ended (s. 130(5)); the form's own question is framed around that same 12-month look-back. Example: a building's laundry room closes for good on April 1, 2026. A T3 filed by April 1, 2027 is in time; one filed in May 2027 is not.

Tax decreases. The Board compares two years: the "base year", which is the last full calendar year before the filing date, and the "reference year", which is the year before that (O. Reg. 516/06, s. 45(1)). A tenant filing in March 2027 would therefore compare 2026 (base) with 2025 (reference). A decrease produced by a successful tax appeal must be raised within a year after the appeal is decided (s. 45(2), para. 3). Any reduction ordered on this ground starts with the opening day of the first rental period beginning on or after the T3's filing date (s. 45(6)).

Completing the T3

The current form is version 01/04/2022.

Part 1 – General Information. The unit's address, who the tenants are and how to reach them, the landlord's name and mailing address, plus any related file numbers.

Part 2, Reason 1 – Lost or reduced service or facility (past year). Fill in a row per item: what it is, cut back or ended, and on what date. Then a year's worth of rent amounts and the payment frequency.

Part 2, Reason 2 – Lower municipal taxes. Name the two years (base and reference) and the complex's total tax bill for each. Attach proof of both years' taxes.

Part 3 – Signature. After that come the French-language and accommodation questions, then payment.

Filing

No Portal option exists for the T3. The choices:

• post or courier, addressed to the LTB at 15 Grosvenor Street, Toronto;
• a ServiceOntario location that takes LTB filings; or
• email to [email protected], after which the Board sends a payment link good for three calendar days.

One unit: $53. Tenants of several units filing together pay $53 and then $5 per added unit, capped at $450, and must send it by post or courier.

Tax-ground applications decided on paper put service on the tenant: every respondent must receive the application plus the written-hearing notice no later than 20 days after the Board issues that notice (Rule 5.6).

Preparing your side

Tenant (applicant)

• For a service cut, write down what was taken away, when, and whether it was a permanent or temporary change. Include anything you now pay to replace it yourself, since replacement cost can matter (see below).
• For a tax decrease, attach tax evidence for both years. Without it, Reason 2 is incomplete.
• Mind the one-year limit for service cuts, and remember that only current tenants can claim the tax ground.

Landlord (respondent)

1. Check the dates. Anything cut more than twelve months before the filing date is barred (s. 130(5)).
2. Prove what the service cost you. O. Reg. 516/06, s. 39 sets the formula. Reasonable removal: a reasonable charge reflecting your cost. Cost unknowable: the service's value, counting the tenant's replacement cost (s. 39(2)). Unreasonable removal: the Board adds in the impact on the tenant, and the result can never fall below the reasonable-removal figure (s. 39(3)–(4)).
3. Temporary interruptions. A temporary cut of reasonable length, judged against how it affected the tenant, earns no reduction (s. 39(7)). Your work orders and dates prove the duration.
4. Services with their own charge. Where an agreement added the service for a separate fee, the reduction equals that fee, or the rent increase taken when it was added, as adjusted (s. 39(5)).
5. Tax claims. Have on hand both years' tax bills, appeal rulings if any, and the yearly rent roll. Fail to prove total annual rents and s. 45(5) substitutes a statutory factor, possibly to your disadvantage.
6. Disclose on time: 7 days before the hearing, or 5 days when replying (Rules 19.1–19.2).

Why T3 applications fail

1. The service was cut over a year ago. Section 130(5) bars it.
2. A former tenant claims the tax ground. Section 133 is for current tenants only.
3. Care home care services or meals. The T3 doesn't cover them.
4. Reason 2 with no tax evidence.
5. Filed on the Portal, or no fee paid. The T3 goes by mail, courier, ServiceOntario or email, and the fee has to be paid.
6. A brief, reasonable, temporary interruption. Under s. 39(7), no reduction is owed.

After filing

After a hearing, which can be in writing for tax claims, the Board's order states the amount of any reduction, its start date, and any rebate owed. Orders from July 1, 2026 onward can be reviewed on a request made inside 15 days; legal questions can go to the Divisional Court on appeal within 30 days.

FAQ

Can a landlord take away parking or a locker without lowering the rent?

Generally no. Removing something that came with the tenancy exposes the landlord to a T3 measured by that item's cost or value, unless the cut was temporary and of reasonable length.

Do lower property taxes automatically reduce rent?

Above a 2.49% drop, yes: s. 131 works automatically. Separately, s. 133 lets a tenant apply using the T3.

From what date is rent reduced?

Service cases: back to the first day of the cut. Tax cases: the first rental period beginning on or after the filing date.

Can someone who has moved out file a T3?

Yes, for a service or facility lost during their tenancy, and only inside the one-year limit.

Official sources

• Residential Tenancies Act, 2006, ss. 130–133, 207
• O. Reg. 516/06, ss. 39–41, 45
• T3 Instructions
• T3 – Tenant Application for a Rent Reduction (PDF)
• LTB Rules of Procedure, Rules 5.6, 19, 26
• LTB Forms, filing and fees