Margin trading allows traders to increase profits without putting up 100% of the funds, but comes with margin interest costs that can impact earnings significantly. Choosing a broker with lower margin rates can save investors hundreds or thousands of dollars annually. Factors like account size, market conditions, borrowing currency, and broker model influence margin rates. Top brokers with competitive rates include Public.com, Robinhood, Interactive Brokers, and Fidelity. Consolidating holdings with one broker, maintaining larger cash buffers, and taking advantage of promotional rates can help lower margin costs and maximize profits. Margin trading can be lucrative with the right approach and broker choice.

Read more at Barchart: Lowest Margin Rates Brokers Right Now: Compare Before You Switch