The main purpose of this legislation is to update the rules for handling small tax disputes in the United States. Specifically, it aims to raise the monetary threshold for cases that can be addressed in Tax Court as small disputes, making it easier for taxpayers with smaller claims to seek resolution. The key provisions of the legislation include increasing the threshold for small tax disputes from $50,000 to 00,000. This means that taxpayers with disputes involving amounts up to 00,000 can have their cases heard as small disputes in Tax Court.