When you submit your tax form, our payment partner will perform TIN Matching with the IRS to check that the provided US TIN and the individual's name are accurate with the IRS records. If they do not match, we will display the TIN as “Not Valid”. Usually, the TIN number or the name is not accurate.
For Foreign TINs for W-8 Forms, validation checks are performed for countries that have published rules for TIN formatting in their country. This covers approximately 85 countries, and includes business or individual entities, the TIN length (minimum and a maximum number of characters), and if it is alphanumeric, numeric-only or alpha only. Make sure there are also no periods, dashes, or spaces. If the Foreign TIN does not meet the published validation rules, we will provide a warning to the user.