Does a bill of sale have to be notarized to be legal?

A bill of sale does not typically need to be notarized to be legally binding; however, notarization can provide additional legal protection and help prevent disputes. Requirements can vary by state or country, so it's important to check local laws. Some transactions, particularly those involving vehicles or real estate, may have specific regulations that require notarization. Always consult local laws or a legal professional for guidance on specific situations.