(a) Commencing on August 1, 2021, the Judge of Probate of Dallas County shall be entitled to an additional expense allowance in the amount of thirty thousand five hundred dollars ($30,500) per annum, which shall be in addition to all other expense allowances, compensation, or salary provided by law. This expense allowance shall be payable in equal monthly installments from the general fund of the county.
(b) Beginning with the expiration of the term of the incumbent judge of probate, the annual salary for the Judge of Probate of Dallas County shall be increased by thirty thousand five hundred dollars ($30,500) per annum, payable in equal monthly installments from the general fund of the county and at that time, subsection (a) shall become void.