You decide how much you would like to contribute to the Savings Plan, from 1 to 50 percent of your pay each year up to IRS limits. Any contributions you make to the plan are made through convenient paycheck deductions.
In addition to deciding how much to contribute, you also decide whether you want to contribute on a before-tax, Roth after-tax or regular after-tax basis. (If you are age 50 or older, you can also make catch-up contributions.) Each type of contribution is held in a separate account. All contribution types are eligible for the company match, but company matching contributions are always made to your before-tax account.