Your money can stay in the original plan, or you can roll your account over into a different plan.  If your current contributions are eligible for a state income tax deduction or other benefit, based on participating in your “home state’s plan,” those deductions against state income tax calculations would not continue since you would be a resident of a different state.  The investment in your existing plan will continue to grow tax-free regardless of where you live.  There is a process for rolling the investment over into a plan from another state.  A rollover is regarded as a change of investment and you are limited to only one investment change per calendar year.