The average salary for an FBI agent as of 2014 is $63,886 per year. The amount of experience an FBI agent has moderately impacts her salary, so an agent with 20 years or more experience can make around $100,000 per year.
An FBI agent belongs to the federal branch of law enforcement with the mission to enforce the nation's laws, defend against terrorists and assist other forms of law enforcement when needed. The FBI's main responsibility is to investigate interstate crime including drug trafficking, cybercrime, espionage and classified security investigations. Being an FBI agent requires a great deal of travel and usually results in 40 hour or more workweeks.