The Minnesota Deferred Compensation Plan (MNDCP) is a voluntary savings plan intended for long-term investing for retirement. Other Administrative Fees.NACo's Deferred Compensation Program has helped more than 1.5 million county employees and retirees save for and live comfortably in retirement. It is important to understand the fees and expenses associated with maintaining your retirement plan. Sign up and manage your deferred compensation retirement account. , one of the largest insurance groups in the United States. Tax Social Security, Comments.