American Pacific Tax Limited | 125 followers on LinkedIn. We help our clients find simple solutions to reach their goals utilizing the best tools for our clients and team. | American Pacific Tax Limited is a leading accounting firm in Hong Kong specializing in filing US taxation for clients. One common question we frequently receive is: Do I need to file a US tax return? If you are a US citizen or resident alien, the rules for filing income tax returns are generally the same whether you are in the United States or abroad.