Roth 401(k) vs. Traditional 401(k) and your PaycheckA 401(k) can be an effective retirement tool. As of January2006, there is a new type of 401(k) contribution. Roth 401(k)contributions allow you to contribute to your 401(k) account on anafter-tax basis and pay no taxes on qualifying distributions whenthe money is withdrawn. For some investors this could prove to be abetter option than the Traditional 401(k) contributions, wheredeposits are made on a pre-tax basis, but are subject to taxes whenthe money is withdrawn. Use this calculator to help determine theoption that could work for you and how it might affect yourpaycheck.