The average balance of a 401(k) is $91,800 as of 2015, according to Time magazine. The average balance for employees in a 401(k) plan for 10 years or more is $251,600.
The average 401(k) balance has surged in recent years, states CNN Money. It is up from $69,100 in 2011, This is largely due to the strong stock market performance of the last few years. Employee contributions are also up, having climbed to $9,670 a year on average. This equates to 8.1 percent of employee salaries, and the percentage rises to an average of 12.1 percent of employee salaries when factoring in employer contributions.