Appeals, penalties and checks into your tax return

Checks into your tax returnWhen and why HM Revenue & Customs carries out checks into tax returns, where to get advice and your rights and obligations.

Appeals against HM Revenue & Customs decisions Key steps and deadlines if you wish to appeal against an HM Revenue & Customs decision on tax.

Tax return deadlines and penalties The key deadlines for sending in your tax return and paying any tax due, automatic penalties and interest payable if you're late.