The Scottish drinks firm saw pre-tax profit rise 18.8 per cent to £16m from £13.5m the year before.
Total turnover in the six months to 31 July rose 13.9 per cent to £119.2m compared with £104.7m in the same period of 2009.
That was ahead of the guidance figure of £118m issued at the end of July.
The Irn-Bru brand grew revenue by eight per cent with increased marketing investment in particular in the North of England.
Barr’s exotic fruit drink brand, Rubicon – which it bought in 2008 – increasing sales by 37 per cent in the period.
Chief executive Roger White said: "We want to get more sales in the south. We have a quality product at the right price. In Scotland Irn-Bru is drunk by everyone and we would like to see more people further south drinking it."