all of such uncertain tax position amounts , if recognized , would impact our reconciliation between the income tax provision calculated at the statutory u.s . federal income tax rate of 21% ( 21 % ) ( 35% ( 35 % ) in 2017 ) and the actual income tax provision recorded each year . we expect a decrease to the balance of unrecognized tax benefits within 12 months of the reporting date of approximately $ 3 million