By Ali Lyon Businesses have called for clarity on tax from the Labour government today as Rachel Reeves faces questions over whether she will hike capital gains rate at her first budget this Autumn. In a new report today, accountancy firm BDO found that 70 per cent of executives are calling for more certainty in the tax regime either through a complete freeze on any business tax changes or a business tax roadmap over the next five years. The findings come as the government fights accusations of shiftiness when it comes to its tax plans. The Treasury has refused to rule out bringing capital gai…