By Chris Dorrell Hiking capital gains tax (CGT) would probably end up costing the Treasury more than it raised, according to leading tax experts at EY. As the budget approaches, speculation is mounting that Chancellor Rachel Reeves is planning to reform CGT to help fill an alleged £22bn blackhole in the public finances. The government has repeatedly refused to rule out changes to the regime, including potentially aligning CGT rates with income tax. However, experts at the Big Four firm told City AM that raising CGT rates would likely do more harm than good. “This would be one of the areas whic…