RSA 100-C:15: Exemption From Taxation and Execution.

I. The right of a person to any benefit or to any other right accrued or accruing to any person under the provisions of this chapter, and the moneys in the funds created by this chapter, shall be exempted from any state, county, or municipal tax in the state; shall not be subject to execution, trustee process, attachment or any other process whatsoever, legal or equitable; and shall be unassignable except as provided in paragraph II.

II. Notwithstanding any provision of law to the contrary, the right of a person to any benefit or to any other right accrued or accruing to any person under the provisions of this chapter, and the moneys in the funds created by this chapter shall be subject to assignment, attachment, and execution to the same extent as such rights under private retirement systems.