The State’s Attorney for a county shall receive: an annual salary for performing the duties of the office as set forth in the public general laws and the public local laws of the county; and an annual payment for office, travel, and other expenses as provided by law and the current practice of the county. Unless otherwise specified, a county shall pay the salary and expenses in equal monthly installments. Except for necessary travel and other expenses incurred in trying a case removed to another county, a State’s Attorney may not receive any other compensation for performing the duties of the office. Any fees to which the State’s Attorney may be entitled shall be: collected and paid to the governing body of the county; and credited to the general fund of the county.