A 403(b) Plan - A retirement plan similar to a 401(k) plan, but one which is offered by public schools and certain 501(c)(3) tax-exempt organizations.
A 403(b) plan, also known as a tax-sheltered annuity (TSA) plan or tax-deferred annuity (TDA), is a retirement plan for employees of certain tax-exempt organizations, employees of public schools, and certain ministers. The plan can take the form of an annuity contract, a retirement account set up for church employees, or a custodial account invested in mutual funds.