Yes, it possible to start with a $50 minimum account (called a mini or micro account) but you need to factor in the broker's spreads.
Brokers like FXCM let you start with $25 while Oanda lets you start with just $1
But to actually profit from forex, you need to be aware of leverage and money management. Never risk more than 2-5% of your account in any trade. Keep your leverage at 1:25 or 1:50
Source(s):http://forex-trading-revealed.blogspot.com/