Fix it fast: What to do with ITINs in the payroll system

You’ve heard this a million times: Individual Taxpayer Identification Numbers are provided to foreign nationals with nonwork U.S. tax obligations; employees always have Social Security numbers. Third-party payroll providers’ systems, however, may accept ITINs, which can put you in line for a hefty penalty for filing incorrect W-2s. It’s a tough bind you don’t want to find yourself in.