The Income and Corporation Taxes Act 1988, also known as ICTA, was the foremost United Kingdom Act of Parliament concerned with taxation until the Income Tax Act 2007 and the Corporation Tax Act 2010. ICTA was enacted in order to consolidate a number of earlier legislative provisions covering taxation. Originally, ICTA primarily covered income tax (paid principally by individuals) and corporation tax (paid principally by companies). It is the longest Act of Parliament to have ever been written.