The age of majority is when a person is legally considered an adult. Most states and the District of Columbia consider 18 to be the age of majority. The only exceptions are Alabama and Nebraska (which put it at 19) and Mississippi and Pennsylvania (where it's 21). You can take on legal responsibilities upon reaching this age, such as voting and signing a contract. However, it doesn’t mean you can legally drink since the Minimum Legal Drinking Age (MLDA) is 21.
Most states do not allow minors to own and manage assets. However, the Uniform Transfers to Minors Act (UTMA) allows them to receive gifts without establishing a formal trust. A UTMA account helps minors avoid tax consequences until they are old enough to claim ownership of it. Note that although most states consider 18 as its legal age, the prevailing UTMA age of majority in the U.S. is 21.