Please note Self Assessment guidance from HM Revenue & Customs can be found on the GOV.UK website. We provide links to the key information below.
Check how to claim a tax refund
Use this tool to find out what you need to do to get a tax refund (rebate) if you’ve paid too much Income Tax.
Disagree with a tax decision or penalty
What to do when you disagree with a tax decision (HMRC1) – appealing against a decision, getting a review by HMRC and reasonable excuses.
Appeal a Self Assessment penalty for late filing or late payment
Find out how to appeal an individual or partnership Self Assessment penalty.
Appeal to the Tax tribunal
Appeal to the tax tribunal – the First-tier Tribunal (Tax) – against tax decisions how to appeal, the hearing, if you lose your case.
Estimate your penalty for late Self Assessment tax returns and payments
If you’ve missed Self Assessment deadlines get an estimate of how much you’ll need to pay in penalties and interest.
