MYSIPP is a Self Invested Personal Pension (SIPP) that gives you flexibility and control over your investments as you plan for your retirement. Flexible contribution options, wider investment choice and a full range of retirement options together with our simplified charging structure make MYSIPP the popular choice for professional advisers and private investors. A Small Self-Administered Scheme (SSAS) is an occupational pension vehicle used by business owners who want wider investment control and flexibility.