You have a dispute with the Tax Credit Office about your entitlement to tax credits
Tax Credits Problems?
If you have a dispute and have been unable to resolve the position with HMRC, it may help to look at HMRC’s technical manuals on tax credits. There is specific guidance on entitlement here http://www.hmrc.gov.uk/manuals/tctmanual/TCTM02000.htm. This covers the complex areas of immigration and residence as well as childcare, child tax credits and working tax credit more generally.
If you have been unable to resolve the position directly with HMRC, or via a local advice agency, TaxAid may be able to provide specialist support to help you resolve your problem.
TaxAid helpline
Our helpline offers professional, free, confidential advice to people on low incomes