CNN 401k Fee Analysis

I did an analysis of investment advice startup FutureAdvisor's proprietary database of plan fees across thousands of American companies for the CNN Money article "Your employer may cost you $100k in retirement savings", and the related interactive calculator, "How much are 401(k) fees costing you?"

Some U.S. workers are losing out on more than $100,000 in retirement savings thanks to 401(k) fees.

The company an employee works for makes all the difference. Over the course of a 40-year career, workers at some companies lose tens of thousands of dollars in 401(k) fees and earnings -- sometimes more than double the savings lost by workers at other firms, according to an exclusive analysis of about 2,300 company 401(k) plans by FutureAdvisor, an online financial adviser.

Each year, 401(k) savers pay a percentage of their account balance toward administrative and investment-management fees, which are usually included in the calculation of fund expense ratios. As an individual's account balance grows, so do the fees they pay.

The analysis was also featured on The Motley Fool.