# Form A4: Application to Vary the Amount of a Rent Reduction

Ontario Landlord and Tenant Board.

Used for: A landlord's or tenant's application asking the LTB to change the rent reduction in a municipality's Notice of Rent Reduction (after a property tax decrease).

## Official source
- Form file: https://tribunalsontario.ca/documents/ltb/Landlord%20Applications%20%26%20Instructions/A4.pdf
- Source page: https://tribunalsontario.ca/ltb/forms-filing-and-fees/
- Version: 2022-04-01
- Last checked by Router.law: 2026-10-19

## Only the person can do
- Complete the payment information yourself. Router.law never handles payment details.
- If you need accommodation under the Ontario Human Rights Code to take part, tick Part 2 of the request form and explain what you need. Router.law leaves this to you.
- Sign the application in Part 5 (page 4) as the applicant or representative.

## Fill it with Router.law
- REST: POST https://router.law/v1/forms/A4/fill (API key)
- MCP: https://router.law/mcp, tool fill_form with form_id "A4"
- Questions and input schema: get_form_spec("A4")
- Docs: https://router.law/docs

Router.law spec status: draft. Router.law returns the filled form for a person to review. It never files anything and does not give legal advice.