The Ontario Employer Health Tax (EHT) is a mandatory payroll tax imposed by the Government of Ontario on employers whose total annual Ontario payroll exceeds $490,000. The tax helps fund Ontario's public healthcare system and is calculated as a percentage of the employer's gross payroll, with rates ranging from 0.98% to 1.95% depending on total payroll size.
Employers are categorized into different brackets: those with payrolls under $490,000 pay no EHT; those between $490,000 and $5 million pay reduced rates with exemptions; and those exceeding $5 million pay the full 1.95% rate on total payroll. For example, a company with a $6 million annual Ontario payroll would pay 1.95% on the entire amount, resulting in $117,000 in EHT annually. Employers must register, remit payments, and file annual returns with the Ontario Ministry of Finance.
The Ontario Employer Health Tax significantly impacts hiring budgets and compensation planning for Ontario-based employers. Understanding EHT obligations is crucial for accurate cost-per-hire calculations and workforce expansion decisions, as the tax can add nearly 2% to total compensation costs for larger employers. Proper EHT management ensures compliance, avoids penalties, and enables accurate financial forecasting. For growing companies approaching the $490,000 threshold, strategic workforce planning becomes essential to manage the tax burden while maintaining competitive hiring practices and sustainable growth trajectories.
- Determine Your Liability: Calculate your total annual Ontario payroll, including salaries, wages, bonuses, and taxable benefits. If it exceeds $490,000, you must register for EHT with the Ontario Ministry of Finance.
- Calculate Your Rate: Apply the appropriate tax rate based on your payroll bracket. Use the exemption amount if your payroll is between $490,000 and $5 million to reduce your liability.
- Remit Payments: Submit EHT payments monthly, quarterly, or annually depending on your total tax liability. Larger employers typically remit monthly through the Ontario Business Registry.
- File Annual Returns: Complete and submit your annual EHT return by March 15 of the following year, reconciling all payments made and ensuring accurate reporting of total payroll.
Key Statistics & Benchmarks
- $490,000 exemption threshold — employers below this pay no EHT.
- 1.95% maximum rate — applies to employers with payrolls exceeding $5 million.
- March 15 filing deadline — annual EHT returns must be submitted by this date.
- 0.98% minimum rate — applies to smaller employers above the exemption threshold.
Common Mistakes to Avoid
- Miscalculating Payroll: Include all taxable benefits and bonuses, not just base salaries, in your total Ontario payroll calculation.
- Missing Registration Deadlines: Register within 30 days of exceeding the threshold to avoid penalties and interest charges.
- Ignoring Multi-Jurisdictional Rules: Apply proper allocation rules if employees work in multiple provinces to avoid overpayment or underpayment.
Frequently Asked Questions
Who must pay the Ontario Employer Health Tax?
Any employer with a permanent establishment in Ontario and total annual Ontario payroll exceeding $490,000 must pay EHT. This includes corporations, sole proprietorships, partnerships, trusts, and non-profit organizations. Employers below the threshold are exempt. Associated employers must combine their payrolls to determine liability, and only one exemption can be claimed among associated entities.
How is the Ontario Employer Health Tax calculated?
EHT is calculated by multiplying your total Ontario payroll by the applicable rate based on your payroll bracket. Employers with payrolls between $490,000 and $5 million receive an exemption amount that reduces their tax owing. For payrolls exceeding $5 million, the full 1.95% rate applies to the entire payroll with no exemption. The formula varies by bracket to provide graduated relief.
What is the difference between EHT and CPP or EI contributions?
EHT is an Ontario provincial tax paid entirely by employers to fund healthcare, while CPP and EI are federal programs with contributions from both employers and employees. EHT has no employee deduction component and is based solely on total payroll, whereas CPP and EI are calculated per employee with annual maximums. EHT rates and thresholds differ significantly from federal payroll obligations.
Can non-profit organizations be exempt from Ontario Employer Health Tax?
Most non-profit organizations are not automatically exempt from EHT. Registered charities and non-profits must pay EHT if their Ontario payroll exceeds $490,000, though they benefit from the same exemption thresholds as for-profit employers. Only specific public sector employers, such as certain hospitals and school boards, may qualify for exemptions under particular circumstances outlined in the legislation.