Sometimes the only way to sort out any problems with a tax credits claim is to make a formal complaint. We explain how to complain to HMRC and the different complaint stages.

HMRC routinely check tax credit awards to make sure they are correct. This page explains the process.

Overpayments and underpayments are a normal part of the tax credits system. This is because tax credits entitlement is not decided until a final decision is made, usually after the end of the tax year for which the award has been given. This means you can have been paid more, or less, tax credits ...

Overpayments and underpayments are a normal part of the tax credits system. This is because tax credits entitlement is not decided until a final decision is made, usually after the end of the tax year for which the award has been given. This means you may have been paid more, or less, tax credits ...

HMRC make numerous decisions about tax credit awards and payments. Sometimes, you may disagree with a decision on your award. This page describes the types of decisions that you can challenge formally through the appeals process and how to do that. Changes to the process were made following a court ...

Your tax credit award is based on your annual income and your circumstances at the time you claim or renew your claim. If your circumstances change during the award period, it can affect the amount you are entitled to.