exelon corp exc disclosed wednesday that it lowered its estimate for the tax impact from the inflation reduction act ira that was recently signed into law to an increase of 200 million a year starting in 2023 earlier this month the company had estimated that the enactment of the ira which implements a new 15 corporate minimum tax based on net income would increase cash taxes for exelon by 300 million a year exelon is continuing to assess the impacts of the ira on the financial statements and will update estimates based on guidance to be issued by the us treasury in the future the chicagobased utility said in a statement the stock which fell 06 in premarket trading has rallied 134 year to date through tuesday while the spdr utilities select sector etf xlc has gained 84 and the sp 500 s spx has declined 97