That share has increased significantly over the past decade: Just 58.2% of employers made a Roth 401(k) available in 2013, PSCA found.
Workers pay tax up front on 401(k) contributions, but investment growth and account withdrawals in retirement are tax-free.
High earners may also mistakenly think there are income limits to contribute to a Roth 401(k), as there are with a Roth individual retirement account.
Those that don't already do so must allow Roth contributions to facilitate this change, or disallow catch-up contributions, according to Principal.
When Roth 401(k), IRA savings makes senseRoth 401(k) contributions may not be wise for all workers.
Persons:
Roth, PSCA, Hattie Greenan, —, Greenan, Ted Jenkin, Jenkin
Organizations:
Getty, of America, Finance, Workers, Companies, Employers, CNBC, CNBC's