A 100% deposit bonus in Forex trading is an enticing offer that doubles your initial deposit, providing you with extra capital to trade. For instance, if you deposit $500, the broker adds another $500, giving you a total of $1,000 to invest. This bonus can enhance your trading potential, allowing you to explore more opportunities in the market. However, it's essential to understand the terms and conditions, including any trading volume requirements, before taking advantage of such offers. Always choose reputable brokers to ensure a safe trading experience.