You can ask for your tax credits decision to be looked at again if you think it’s wrong.
Call the Tax Credit helpline first. They can check your award and may be able to change it if it’s wrong.
If you’re still unhappy you can make a formal request to have the decision looked at again. The way you do this depends on whether the decision was made before or after 6 April 2014.
There’s a different form if you want to dispute a tax credit overpayment.
Decisions made before 6 April 2014
HM Revenue and Customs (HMRC) will check the decision, explain it to you and change it if it’s wrong.
Decisions made on or after 6 April 2014
If the date on your decision letter is on or after 6 April 2014, you might be able to make a formal request to have the decision looked at again (sometimes called a ‘mandatory reconsideration’).
Your decision letter will tell you if you can ask for a mandatory reconsideration.
You must request a mandatory reconsideration within 30 days of the date on your decision letter.
The Tax Credit Office might accept your request if you miss the deadline, but you’ll have to explain why it’s late.
If you disagree with the decision
You can appeal to the Social Security and Child Support Tribunal, or the Appeals Service if you’re in Northern Ireland.