What is W-9 and w-8 form?

The W-9 form is used in the United States by individuals and businesses to provide their Taxpayer Identification Number (TIN) to entities that will report income paid to them. It is typically used by U.S. persons, including citizens and residents. In contrast, the W-8 form is used by foreign individuals and entities to certify their foreign status and claim exemption from certain U.S. tax withholding on income received from U.S. sources. There are several variations of the W-8 form, such as W-8BEN for individuals and W-8BEN-E for entities.