This Practice Note covers the procedural aspects of the rules on the disclosure of tax avoidance schemes (DOTAS) applying to income tax, corporation tax, capital gains tax (CGT), National Insurance contributions (NICs), stamp duty land tax (SDLT), inheritance tax, the annual tax on enveloped dwellings (ATED) and the apprenticeship levy. It covers time limits, how to make a disclosure, scheme reference numbers, HMRC information powers, client lists and penalties. The general principles of the DOTAS rules for income tax, corporation tax, CGT and NICs, including the circumstances in which they apply, the hallmarks and who has a duty to make a disclosure, are covered in Practice Note: Disclosure of tax avoidance schemes—income tax, corporation tax, CGT and NICs. For the rules on disclosing: • stamp duty land tax (SDLT) avoidance, see Practice Note: Disclosure of tax avoidance schemes—SDLT • avoidance of VAT and other indirect taxes, including the related procedural rules, see Practice Note: Disclosure of tax avoidance schemes—VAT and other indirect taxes (DASVOIT), and • inheritance tax (IHT) avoidance, see Practice Note: Disclosure of tax avoidance