From the beginning of the 2010/11 tax year individuals with ‘net adjusted income’ in excess of £100,000 had their personal allowance reduced. This reduction will be at a rate of £1 for every £2 of income over £100,000. Based on the personal allowance, this means that any person with income over £114,950 will lose their full personal allowance applying for the 2011/12 tax year.