Mayor Vincent C. Gray (D) has signed an executive order that requires that requires agencies to get additional approval before spending money on supplies, materials, contractual services, subsidies and equipment,” according to a news release the mayor’s office issued Thursday.

The move will not affect salaries, though the city has already instituted furlough days to help fill a fiscal 2011 budget gap.

Gray’s action comes days before the D.C. Council takes an initial vote on the mayor’s proposed fiscal 2012 budget, which would raise taxes on wealthier residents and cut several social-service programs. Council committees have already made several changes to Gray’s plan.

“Given the point at which we find ourselves during this fiscal year and the looming spending pressures we are facing, now is the time to implement additional cost-saving measures to square this government with the realities of our financial situation,” Gray said in a statement.