Expenditures by municipalities and regional school districts before adoption of budgets.

(b) Notwithstanding the provisions of subsection (a) of this section, when an annual budget of a regional school district is not approved by a majority of voters of the member towns of such district before the beginning of any fiscal year, the disbursing officer for each member town of the regional school district shall make necessary expenditures to such district in an amount equal to the total of the town's appropriation to the district for the previous fiscal year and the town's proportionate share in any increment in debt service over the previous fiscal year, until the regional school district budget is approved pursuant to section 10-51 . Each such town shall receive credit for such expenditures once the budget is approved for the fiscal year. Limitation does not apply to taxing authority of board of selectmen. 217 C. 303.