Please note that this website has a UK government accesskeys system.
Your Self Assessment tax calculation explained, why it's important to check it and tell HM Revenue & Customs if you think it's wrong
Your Self Assessment Statement explained, how to check the figures and change the amount of the payments on account you will pay later
Ways you can pay Self Assessment, including Income Tax and Capital Gains Tax, information you'll need and key dates
Who to contact if you can't pay your tax bill on time and how to make arrangements to pay by instalments or pay late