The Ontario Employer Health Tax (EHT) is a mandatory payroll tax for businesses with employees in the province. Currently, eligible private-sector employers with an annual payroll under $5 million CAD enjoy a generous $1 million exemption, meaning they only pay this tax on the portion of their total annual payroll that exceeds $1 million. However, if your total annual Ontario payroll exceeds $5 million CAD, the exemption is completely lost, and you must pay EHT on your entire payroll from the first dollar. You must register with the Ministry of Finance once your payroll approaches the registration threshold.
Growing your business and hiring more staff is a massive milestone for any Ontario company. 💼 However, as your team expands in cities like Toronto, Waterloo, or Brampton, so do your provincial tax obligations. One of the most misunderstood payroll taxes in the province is the Employer Health Tax (EHT). This tax goes directly toward funding Ontario’s healthcare system, and the Ministry of Finance is incredibly strict about compliance.
Many small business owners are completely unaware of the EHT because of the government’s basic exemption. Currently, eligible employers with an annual Ontario payroll under $5 million CAD are completely exempt from paying EHT on the first $1 million of their payroll. If your total annual payroll is $900,000 CAD, you pay absolutely nothing. However, the moment your payroll hits $1,000,001 CAD, the tax kicks in on that extra dollar. Crucially, if your total annual Ontario payroll exceeds $5 million CAD, you lose the exemption entirely and must pay the tax on your entire payroll from the first dollar. Failing to register, file, and remit on time will result in frustrating penalties and interest charges from the Ministry.
Step-by-Step Process for EHT Registration in Ontario
Managing the Employer Health Tax requires coordination between your human resources team and your corporate accountant. 📈 Here is the standard step-by-step process to ensure your growing business remains compliant with the Ministry of Finance.
Step 1: Calculate Your Total Ontario Remuneration
Before you do anything, you must know what counts as “remuneration.” It is not just base salaries. You must include bonuses, taxable benefits, vacation pay, and stock option benefits for all employees who physically report to work in Ontario. Independent contractors (who issue you invoices) are generally not included in this calculation.
Step 2: Determine Your Eligibility for the Exemption
Most private-sector employers qualify for the $1 million exemption, provided their total annual Ontario payroll (including associated employers) does not exceed $5 million CAD. 📝 If your combined payroll exceeds $5 million, the exemption is completely eliminated, and EHT must be paid on your entire payroll. Public sector employers (like municipalities) and completely unregistered/unincorporated individuals may have different rules. Crucially, if you own multiple associated corporations (e.g., three different restaurants under different corporate names), you must share the single $1 million exemption across all associated businesses.
Step 3: Register with the Ministry of Finance
When you realize your payroll will cross the $1 million threshold in the current calendar year, you must register for an EHT account. You can do this easily online through the Ontario Business Registry or by calling the Ministry of Finance. They will issue you an EHT account number, which is separate from your federal CRA payroll number.
Step 4: Determine Your Remittance Schedule
Once your payroll exceeds the exemption limit, you must start paying the tax. 📅 Your monthly instalment schedule is calculated based on your total Ontario payroll (remuneration), rather than the tax amount itself. You are required to make monthly instalment payments if your annual Ontario remuneration exceeds $1,200,000 CAD. If your payroll is below this threshold, you only need to make a single annual payment when filing your return.
Step 5: File the Annual EHT Return
Every registered business must file an annual EHT return by March 15th of the following calendar year. Even if your payroll dipped below the $1 million mark and you owe zero dollars, once you have an active EHT account, you must file a “nil” return to prove to the government that no tax is owed.
How Much Does the EHT Cost in Ontario?
The EHT is calculated on a sliding scale based on your total Ontario payroll. Here is a breakdown of the rates and associated compliance costs (in CAD):
| Payroll Bracket / Service | Estimated Cost / Rate (CAD) | Details |
|---|---|---|
| Payroll under $1,000,000 | 0% (Exempt) | Eligible employers with under $5 million in total annual payroll pay zero tax on their first $1 million of Ontario remuneration. |
| Payroll from $1,000,001 to $5,000,000 | 1.95% | The maximum EHT rate applies only to the portion of payroll exceeding the $1 million exemption. |
| Payroll over $5,000,000 | 1.95% on entire payroll | The $1 million exemption is completely eliminated. EHT must be paid on the entire annual payroll from the first dollar. |
| Late Filing Penalty | 5% to 17% of Tax Owed | The Ministry applies a 5% penalty instantly, plus 1% for every month the return is late. Larger employers (over $1,200,000 in annual payroll) generally remit monthly. |
| Corporate Accountant Fees | $500 – $1,500 | Annual accounting fees to reconcile payroll, calculate the EHT, and file the return. |
How Long Does the Process Take?
Registering for an EHT account online is incredibly fast and usually takes only 15 to 30 minutes if you have your federal Business Number and incorporation documents handy. 🕐 The Ministry will generally activate your account and mail your confirmation within 2 to 3 weeks. Filing the annual return by the March 15th deadline is mandatory every single year to avoid instant late penalties.
Frequently Asked Questions (FAQ)
Do I need to register if my payroll is under $1 million?
Generally, no. If you are an eligible employer and your total annual payroll remains well below the $1 million threshold, you do not need to register for an EHT account or file a return.
Can a registered charity claim the EHT exemption?
Yes. Registered charities are eligible for the exemption. Furthermore, charities with multiple locations may actually be entitled to claim a separate exemption for each qualifying location, which is a massive benefit.
Does EHT apply to independent contractors?
No. EHT is only calculated on the remuneration paid to actual employees (where an employer-employee relationship exists). Payments to legitimate independent contractors are not subject to the Employer Health Tax.
What happens if my associated corporations have separate EHT accounts?
If you own multiple associated corporations, you cannot claim a $1 million exemption for each one. You must complete an Associated Employers Exemption Allocation form to split the single $1 million limit among the companies.
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