Retirement Read Time: 3 min A Meal for All Generations Related Content What Is a Roth 401(k)? Roth 401(k) plans combine features of traditional 401(k) plans with those of a Roth IRA. The Facts About Income Tax Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you. A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals.