what are the similarities between 401 k and 403 b 
some employers offer employees the opportunity to contribute to both a 401 k and 403 b each offers employees a tax advantaged way to save for retirement but investment choices are often more limited in a 403 b plan than a 401 k 401 k s serve private sector employees 82 unlike a 401 k the 403 b plan offers a special plan for those with 15 or more years of service with the same employer 5