Hi, we are setting up a 401k plan here at work. We would like to do all the work ourselves, and not use an outside advisor or mutual fund company. To start, the weekly 401k funds for each individual will be going into a savings account at a bank (and eventually into CDs). The bank will report the interest paid out as taxable income. How can we report to the IRS that this interest is from a 401k plan and not taxable? Is this possible, or do we have to use an outside company to manage this plan? Thank you.