Tax helpline for those affected by severe weather and flooding HMRC have set up a helpline (number is 0800 904 7900) and will enable anyone affected to get practical help and advice on a wide range of tax problems they may be facing. HMRC will also: agree instalment arrangements where taxpayers are unable to pay as a result of the floods agree a practical approach when individuals and businesses have lost vital records in the floods suspend debt collection proceedings for those affected by the floods cancel penalties when the taxpayer has missed statutory deadlines. Internet link: GOV.UK news