To avoid any difficulties when preparing tax returns:
- Always treat the information used to prepare an individual's income tax return as confidential.
- Canadians have a number that is like a social security number, but it is for their old-age pension. Do not use this number on a U.S. tax return. Canadians often have both U.S. and Canadian social security numbers.
- Be on the alert for the following possible indications of fraudulent activity:
- Form W-2 that is typed or handwritten or has noticeable corrections
- Form W-2 from a company that looks different from other Forms W-2 issued by the same company
- A suspicious person accompanying the taxpayer (who has been observed on other occasions)
- Multiple refunds directed to the same address or P.O. box
- Employment or earnings that are a basis for refundable credits, which are not well-documented
- Similar returns (e.g., same amount of refund, same number of dependents, or same number of Forms W-2)
- Notify your site's coordinator if you suspect any fraudulent or unusual activity.