From Cynthia Scott of OMC Financial Services:

Roth 401k/403b plans are being offered to employees as another retirement option.

**Roth 401k plans are for profit businesses; Roth 403b plans are for non-profit organizations

**Roth 401k/403b plans are sponsored by employers as well as regular 401k/403b plans

**Contributions to a Roth 401k/403b plan are not tax deductible; they are in a 401k/403b plan

 **Contributions in a Roth 401k/403b grow tax free and are not taxable if withdrawn at 59 ½ if the plan is at least 5 years old;  a regular 401k/403b allows tax deductible    contributions,but withdrawals are taxable income

 **Contributions to a regular Roth are subject to income limits; there is no income limit for a Roth 401k/403b

 **Employees are eligible to contribute to both a 401k/403b plan and a Roth 401k/403b as long as the contributions to both do not exceed $16,500 for 2009; 
$22,000 for someone over age 50

 **Only regular 401k plans are eligible for an employer match

**A Roth 401k/403b will probably be more advantageous to someone younger but; a combination of both might be appropriate for anyone who still has sometime before retirement because at retirement they will receive both taxable and non-taxable income.