how long can i contribute to my roth after retirement
By Investopedia AAA |. A: The maximum amount that a person can contribute to his Roth 401(k) for the calendar year 2015 is $18,000, or $24,000 for those over age 50. These are the same maximum contribution amounts permitted for a traditional 401(k).A Roth 401(k) is essentially the same as a traditional 401(k) plan except that it only accepts contributions on an after-tax basis.hese are the same maximum contribution amounts permitted for a traditional 401(k). A Roth 401(k) is essentially the same as a traditional 401(k) plan except that it only accepts contributions on an after-tax basis.