The Full Form of EHT is Employer Health Tax.

Employer Health Tax (EHT) is a payroll tax on remuneration paid to employees and former employees.

The Ontario government has temporarily increased the EHT exemption for 2020 from $490,000 to $1 million due to the special circumstances caused by the coronavirus (COVID‑19) in Ontario. The exemption will return to the previous amount of $490,000 on January 1, 2021, and will be adjusted according to inflation again in 2024 using the Ontario Consumer Price Index.

To be able to claim the tax exemption, employers must be eligible employers as defined under the EHT Act. Employers who have a municipal representative on their board of directors, or who are under the control of any level of government, are generally not eligible employers.

Employers normally cannot claim the exemption if their Ontario payroll for the year (including the payroll of any associated employers) is over $5 million. However, eligible employers who are registered charities can claim the exemption even if their payroll exceeds $5 million.