Phone an advisor for HMRC by calling their dedicated contact number 0843 504 7177 or call their mobile-friendly local-rate helpline 0300 200 3300.
Contact HMRC general enquiries by calling their main UK phone number 0843 504 7177 or call HMRC for free on their helpline 0300 200 3300 if you are calling from a mobile phone with free inclusive minutes. HMRC are the main tax office within the UK and they regulate income tax payments, self-assessment tax and national insurance contributions for the whole of the country.
HMRC, which used to be known as Inland Revenue, also regulate Tax Credit payments for UK citizens. To contact HMRC about your tax credits please phone their dedicated tax credit helpline 0345 300 3900. You can call this phone number to find out how much you will get paid, when your tax credits payment will be made and to inform HMRC about a change in your circumstances which will affect your tax credits, such as a change in income. You can even manage your tax credits online by going to the official HMRC tax credits site https://www.gov.uk/manage-your-tax-credits.