"The average 401(k) balance at the end of Q1 was $91,800 ... up 0.5 percent from last quarter and up 3.6 percent from one year ago. More than a million workers increased their contribution rate in Q1 2015, and a record 23 percent of employees have increased their contribution rates since Q1 2014. The average overall savings rate, which includes both employee and employer contributions, increased to 12.5 percent. The employee contribution rate remained constant at 8.1 percent while the employer contribution rate climbed to 4.4 percent.... For self-employed 401(k) accounts, the average balance at the end of 2014 was $144,100, a 39 percent increase since 2007. The average contribution was $22,400 at the end of 2014, a 29 percent increase since 2007."