"As part of tax reform, Congress considered changes to 401(k)s that would require most new contributions to go to a Roth, rather than a traditional, account. This budget gimmick would help pay for tax cuts because Roths are taxed up-front, rather than in retirement. Such a change, however, could also affect how much people save. Some could save more by keeping their contribution steady. Some may save the same by reducing their contribution to maintain their take-home pay. But many, especially those who have lower incomes or are cash-strapped, may overreact and save much less. Rather than risk disrupting the retirement savings system, a better idea is to focus on actions to boost saving and expand access to workplace retirement plans."