Main corporation tax rates over time Share: Note and source Note: The horizontal axis has April of each year marked. As well as the rates shown, there was also a ‘starting rate’ (initially 10%, then 0%) in place from April 2000 to April 2006. Source: IFS Fiscal Facts. Appears in Corporation tax explained Related content Should income from business be taxed like income from employment? There is a strong case to tax business income at the same rates as employment income – if the tax base is also reformed. Taxlab Key Questions Should tax be used to encourage entrepreneurship? There are reasons to promote entrepreneurship, but low headline tax rates on income from business are poorly targeted at that goal. Taxlab Key Questions Corporation tax revenue by industry, 2018–19 Taxlab Data Item Concentration of corporation tax payments, 2018–19 Taxlab Data Item