Information Bulletin
October 2008
ISBN: 978-1-4249-8126-7 (Print), 978-1-4249-8128-1 (PDF), 978-1-4249-8127-4 (HTML)
This publication is provided as a guide only. It is not intended as a substitute for the Employer Health Tax Act and Regulations.
If you are an eligible employer, you do not have to pay Employer Health Tax (EHT) on the first $400,000 of remuneration. Eligible employers are generally private sector employers. The exemption amount for the year must be shared among associated eligible employers. For more details on the tax exemption, please refer to EHT Information Bulletin: Tax Exemption.
We use the associated corporations rules under section 256 of the Income Tax Act (Canada) to determine if employers are associated. Although these rules refer to corporations, their application is extended under the EHT Act to include individuals, partnerships, and trusts.
Individuals, partnerships, and trusts are deemed to be corporations with one class of voting shares.
One of the corporations controls the other.
A parent company controls a subsidiary.

A doctor hires a superintendent to manage his rental properties, and hires a secretary in his medical practice. He also owns an art gallery.

Both of the corporations are controlled by the same person or group of persons.

Each corporation is controlled by a different person and they are related. One of them owns at least 25 per cent of any class of shares of each corporation (other than shares of a "specified class").

One corporation is controlled by one person, and that person is related to all members of the group that controls the other corporation. That one person also owns at least 25 per cent of the shares of the other corporation (other than shares of a "specified class"). It is not necessary that the members of the group be related to each other.

Each corporation is controlled by a related group, with all members of one group related to all members of the other group. One or more persons who are members of both groups, either alone or together, own at least 25 per cent of the shares of
each corporation (other than shares of a "specified class"). It is not necessary for every member of a group to own shares in the other corporation.

Share ownership includes both direct beneficial ownership and indirect ownership. Indirect ownership occurs when shares of a corporation are held by another corporation. For example, when Bob owns 100 per cent of Company X which owns 50 per cent of Company Y, Bob is considered to own 50 per cent of Company Y.
For the definition of "specified class" as used in examples (d) to (f), or more details on the associated corporations rules under the Income Tax Act (Canada), please refer to the Canada Revenue Agency's (CRA) Interpretation Bulletin IT-64R4, Corporations: Association and Control.
There are three situations in which control can occur:
A person at arm's length may have influence over a corporation, regarding how the business is to be conducted, from a legal arrangement (for example, under a franchise, license, lease, distribution, supply or management agreement). This influence is not control.
For more information regarding control, please refer to the CRA's Interpretation Bulletin IT-64R4, Corporations: Association and Control.
The term "related" is used in examples (d) to (f) in the association rules, and the term "related group" is used in example (f).
Individuals can be related by blood, marriage, or adoption. For tax purposes, you are related to your spouse or common-law partner, parents and children and inlaws, siblings and in-laws, and grandparents and in-laws, and grandchildren. However, you are not related to your uncles, aunts, nieces, nephews and cousins.
"Related group" is defined as a group of people, with each member related to every other member of the group.
For example three brothers form a related group.
A group consisting of a son, father, and brother of the father does not form a related group, because an uncle and a nephew are not considered to be related for tax purposes.
For more details on relationships, please refer to the current version of the Canada Revenue Agency's Interpretation Bulletin IT-419, Meaning of Arm's Length.
The association rules do not apply to religious or charitable organizations that are exempt from income tax as a "Registered Charity."
For EHT exemption purposes, a registered charity that is an eligible employer can request to treat each of its locations as a separate employer, as long as they fit within the guidelines contained in EHT Information Bulletin: Religious or Charitable Organizations.
For non-share capital and non-profit corporations, the usual association rules dealing with control through share ownership do not apply. We rely on direct or indirect influence, the type of control described under the section Control in (2).
The ministry will consider the following factors in its determination of "associated employer":
Associated employers have to share the tax exemption. If you are associated with other employers, you must complete the Associated Employers Exemption Allocation Schedule showing how the exemption will be shared. Each associated employer must complete this schedule, or all tax exemptions claimed by the associated group will be denied for the year. The schedule must be filed by each of the associated employers with its Annual Return by March 15 of the following year.
To obtain a written interpretation on a specific situation not addressed in this publication, please send your request in writing to:
Ministry of Revenue
Tax Advisory Services Branch
Income Tax Related Programs Section
Employer Health Tax
33 King Street West, 3rd Floor
Oshawa ON L1H 8H5
Other publications which provide further details on this topic include:
To obtain the most current version of this publication, or additional information, visit our website at ontario.ca/revenue and enter 500 in the find page field at the bottom of the webpage or contact the Ministry of Revenue at: