Building a Tax-Free Future: 5 Major Benefits of the Roth 401(k) Most people are familiar with the traditional 401(k) retirement account. It has become the de facto retirement-saving vehicle for millions of Americans. At Hosler Wealth Management, we’re big fans of the traditional 401(k)’s tax-free cousin, the Roth 401(k). Like the better-known Roth IRA, the Roth 401(k) is a