Tax credits
If you are claiming tax credits you can still make a voluntary disclosure. You
should tick the checkbox on the Disclosure form to show that you have/are
claiming tax credits for the year(s) covered by the disclosure.
HM Revenue & Customs (HMRC) will pass information about your income and gains
to the Tax Credits Office. They will decide whether any changes are needed to
the amount of tax credits that they have paid you or are paying you. Because
there may be some delay in HMRC letting the Tax Credits Office know, you
should tell them about the change in your circumstances yourself as soon as
you can.
If you have made a joint claim for tax credits, you may wish to tell your
partner that the tax credit award may be adjusted as a result of your
disclosure.