This Practice Note explores the key aspects of qualified investor schemes (QIS), a UK-authorised fund regime, including investment powers, eligible criteria, and potential tax implications. What is a QIS? A QIS is a UK-authorised fund introduced in 2004 to meet the fund management industry’s demand for an Financial Conduct Authority (FCA) regulated investment vehicle with a relatively light regulatory framework. It is designed primarily for professional, institutional and sophisticated investors, such as those in wealth management, and sits alongside the UK UCITS, non-UCITS retail schemes (NURS) and long-term asset fund (LTAF) regimes. For more information on UCITS, NURS and LTAFs, see Practice Notes: UK Undertakings for Collective Investment in Transferable Securities (UCITS)—essentials, Non-UCITS retail schemes (NURS) and The UK Long-Term Asset Fund (LTAF). A QIS may take the form of an authorised unit trust (AUT), an open-ended investment company (OEIC), or an authorised contractual scheme (ACS). For further information on AUTs, OEICs and ACSs, see Practice Notes: OEIC authorisation and winding-up, Authorised unit trusts (AUTs) and Taxation of authorised contractual schemes (ACSs)—overview. Since it is not a UK UCITS,