Mass. Gen. Laws ch. 280, § 4: Criminal prosecutions; expenses paid by commonwealth; waiver of costs for indigent defendants

Section 4. Expenses arising in a criminal prosecution, including fees of grand and traverse jurors for travel and attendance therein, shall be paid by the commonwealth.

Fees and costs of indigent defendants in criminal prosecutions except attorneys' fees, shall or may be waived or substituted by the court or paid by the commonwealth in accordance with the provisions of sections twenty-seven A to twenty-seven G, inclusive, of chapter two hundred and sixty-one.