What is the time limit for appealing a tax decision?
The time limit for appealing a tax decision made by HM Revenue and Customs generally depends on the type of decision being contested. For most cases, taxpayers have 30 days from the date they receive the decision to file an appeal. This applies to many decisions regarding tax assessments, penalties, and other formal determinations. It is essential to ensure that the appeal is made within this timeframe, as late appeals may not be accepted.
In some situations, such as disputes relating to certain tax reliefs or overpayments, different rules may apply, and the time limits could vary. Therefore, taxpayers should carefully review the specific decision letter they have received, as it usually contains information about how and when to appeal.
For the most current details, including any exceptions and the procedures involved, it is advisable to check the relevant sections on the official HMRC website. There, taxpayers can also find additional resources to assist them with their appeals.

Answered Jun 17, 2025
Need further help?
Type out your followup or related question and we will get you an answer right away.
Need to contact HMRC?
If you need to talk to HMRC customer service, now that you have the answers
that you needed, click the button below.
Contact HMRC