A Roth 401(k) is a retirement savings plan that combines features of a traditional 401(k) and a Roth IRA. Contributions are made with after-tax dollars, meaning you pay taxes on the money before it goes into the account. This allows for tax-free withdrawals in retirement, provided certain conditions are met. Employers often offer a Roth 401(k) as part of their benefits package, allowing employees to save for retirement while enjoying potential tax advantages. Unlike a traditional 401(k), which taxes withdrawals, the Roth 401(k) allows for tax-free growth and withdrawals, making it an attractive option for many savers.