What Is The 403B Retirement Plan? 
A 403 -LRB- b -RRB- retirement plan used to be called tax sheltered annuities , but with the addition of mutual funds , has kept its section of the code title . Self-employed ministers , public school and certain non-profit employees of 501 -LRB- c -RRB- -LRB- 3 -RRB- are generally the plan participants of a 403 -LRB- b -RRB- which has similar tax treatment of a 401 -LRB- k -RRB- . 