N.H. Rev. Stat. § 651:22
In any criminal case, in addition to such other terms and conditions as may be imposed by the court, a defendant who has received a suspended sentence or who has been released under RSA651:19 may be required by the court to surrender to the department of corrections or other agency designated by the court all or part of his wages or other income, less standard payroll deduction required by law, earned during the time he is not confined under the sentence. The court may direct that, after deducting therefrom the cost of his maintenance while not confined, the balance be applied as needed for restitution payments made to authorized claimants pursuant to RSA651:62 through 66 and for the support and maintenance of his dependents. Any balance after such applications shall be deposited in a savings account to be released to him or applied as needed for restitution payments or the support of his dependents as the court may order, or applied to the designated cost of room and board at the institution for the period of time during which the inmate is working before the expiration of his sentence. Upon expiration of his sentence the balance remaining shall be paid to him or his order.
RSA 651:22
1971, 518:1. 1981, 329:3, eff. Aug. 16, 1981.