This document summarizes the key UK tax rates and allowances for the 2014/15 and 2015/16 tax years. Some of the highlights include: the personal income tax allowance increasing to £10,600; the higher rate threshold remaining at £31,785; and the additional rate threshold staying at £150,000. National insurance contribution rates remain largely unchanged. The annual investment allowance will decrease to £25,000 from January 2016. Stamp duty land tax rates on residential properties were adjusted.