A 403(b) plan is a US tax-advantaged retirement savings plan. It’s basically a 401(k) offered by non-profits or governmental organizations. It’s available for employees of public education organizations, cooperative hospital service organizations, and self-employed ministers. It’s also available from non-profit employers, if they’re Internal Revenue Code 501(c)(3) organizations. Ellevest supports 403(b) rollovers: Learn more here.