While a protocol as a whole, may be comprised of more than one header type that it uses for communication purposes to exchange information such as state and transmit application specific data. This is the reason why sometimes a protocol is described as a protocol suite.
Since January 1, 2006, U.S. employers have been allowed to amend their 401(k) plan document to allow employees to elect Roth IRA type tax treatment for a portion or all of their retirement plan contributions. The same change in law allowed Roth IRA type contributions to 403(b) retirement plans. Employees can roll their Roth 401(k) contributions over to a Roth IRA account upon termination of employment. 2  It is the employer's decision whether to provide access to the Roth 401(k) in addition to the traditional 401(k).
3. No Roth Feature: A Solo 401(k) Plan can be made in pre-tax or Roth (after-tax) format. Whereas, in the case of a SIMPLE IRA, contributions can only be made in pre-tax format. In addition, a contribution of $18,000 ($24,00, if the plan participant is over the age of 50) can be made to a Solo 401(k) Roth account.hereas, in the case of a SIMPLE IRA, contributions can only be made in pre-tax format. In addition, a contribution of $18,000 ($24,00, if the plan participant is over the age of 50) can be made to a Solo 401(k) Roth account.