The BBC is not responsible for the content of external internet sites
HM Revenue & Customs has a self assessment helpline open every day including bank holidays from 0800 GMT to 2000 GMT: 0845 900 0444
HMRC Tax Credits helpline: 0845 300 3900
The tax credit helpline is open every day including bank holidays from 0800 to 2000 GMT.
Download or subscribe to this programme's podcast
Most Popular Now | 63,400 people are reading stories on the site right now.";