Tax research focuses primarily on the Internal Revenue Code and the various primary and secondary materials that interpret it. A tax problem often involves legislative, judicial, and administrative interpretations. Administrative sources play an especially important role in tax research, so understanding the numerous regulations and IRS pronouncements that exist, as well as each one's binding or persuasive authority, is essential.
There are a number of specialized tools to help make tax research more efficient. Looseleaf services are often a good place to start since they are up-to-date and bring together all relevant primary materials along with commentary and analysis. Tax treatises are also helpful for gaining subject matter familiarity. Wherever you start, tax research requires a thorough, logical, and comprehensive approach.