The Inland Revenue Department (IRD) of Hong Kong Government is one of Hong Kong government departments which is responsible for the administration of the following Hong Kong ordinances on taxes and duties and the related rules and regulations: Betting Duty Ordinance Cap.108 Business Registration Ordinance Cap.310 Estate Duty Ordinance Cap.111 Hotel Accommodation Tax Ordinance Cap.348 Inland Revenue Ordinance Cap.112 Stamp Duty Ordinance Cap.117 Tax Reserve Certificates Ordinance Cap.289 The Inland Revenue Department is headquartered at the eponymous Revenue Tower in Wanchai. Before that, the department was located at Windsor House. Official website