N.H. Rev. Stat. § 464-A:23
Every guardian shall be allowed a reasonable compensation for all proper expenses and services in the discharge of the guardianship. Administrative expenses approved by the court, including but not limited to guardianship fees, legal fees, and appraisal costs shall be paid out of the estate of the ward as a priority over other debts and obligations of the ward to the extent that funds are available and the needs of the ward are being met. The balance of the account due to the guardian shall be a lien upon all of the estate of the ward, real and personal, not disposed of. After a person ceases to be guardian, he or she may maintain an action for the recovery of said money owed for expenses and services.
RSA 464-A:23
1979, 370:1. 2002, 48:1, eff. Jan. 1, 2003.