Domestically, Ontario traders fall under the national CIRO framework with the Ontario Securities Commission as the provincial regulator — one of the most active in North America in publishing warnings about unregistered platforms. The brokers reviewed on this site are internationally regulated rather than CIRO members; see our CIRO vs. international brokers guide for what that means in practice before you fund an account.
Broker availability
All six ranked brokers in our comparison matrix accept applications from Ontario residents. There are no Ontario-specific product restrictions for forex beyond the national rules — the regulatory distinction that matters is CIRO vs. international, not province of residence.
Taxes: the question that matters
The CRA distinguishes between capital gains (50% inclusion rate) and business income (fully taxable). Frequency of trading, holding periods, time devoted and intent all factor in. Active day traders are commonly assessed as business income. Get professional advice for your specific situation.
Related broker reviews
Want to compare your options in more depth? Read our full VT Markets review (9.3/10) and StarTrader review (9.1/10), or see how they stack up head-to-head in our VT Markets vs StarTrader comparison.
Spotting offshore marketing
The OSC maintains public warning lists of unregistered platforms. If a broker offering 500:1 leverage and a deposit bonus is targeting you on social media, that's who those lists are for.