The Minnesota Deferred Compensation Plan (MNDCP) is a voluntary savings plan intended for long-term investing for retirement. If you have questions about the deferred compensation plan, please contact the Minnesota Deferred Compensation Plan at 1-800-657-. 5757. 4.Find your employer's plan. The Minnesota Deferred Compensation 457b Plan or mndcp is available to all public employees who work for the state. This plan offers a tax-deferred savings plan that can help supplement other retirement benefits. In this section we discuss the features of the MNDCP and how to use your MNDCP savings to supplement your pension and social security income. The calculator is simply a tool to estimate how much your family will need to contribute for one year at Harvard. PRO Series Regional Series Rimfire Series European Pro Series International Series. Learn.