According to research conducted by accountancy firm UHY Hacker Young, Britain’s FTSE-100 companies have reduced their tax rates by almost a third in the last two years, a consequence partly due to the reduction in headline corporate tax rates in the UK.
UHY also noted that companies in the FTSE-100, which is increasingly dominated by foreign mining firms, were generating a higher percentage of their revenues overseas where tax systems are often more favorable.
Some top companies also carried forward losses made during the recession to gain tax relief in later years. More than a third of FTSE-100 companies paid no corporation tax at all last year.
"With more of companies' operations now based overseas it is only sensible for them to ensure that their business is structured properly so that they are paying tax at the best rate," said Roy Maugham, tax partner at UHY Hacker Young.
The figure for the current year is based on annual reports published up to 31 August. The effective tax rate in 2010 was 30.1 per cent, according to the study, published today.
Maugham, however, said the firms were not doing anything wrong.
“Companies have a duty to their shareholders to keep the tax they pay under control,” he said. “With more of their operations now based overseas it is only sensible for them to ensure that their business is structured properly so that they are paying tax at the best rate.”
Concerns over the possibility of more companies moving offshore have led to the government looking at making the UK more attractive tax-wise says UHY.