IRS creates the ITIN (1996)
The IRS created Individual Taxpayer Identification Numbers so that people with U.S. tax obligations but no Social Security number could file returns. The program grew quickly as immigrant workers used ITINs to pay income tax.
ITIN issuance grew steadily through the 2000s. By the mid-2010s, ITIN filers were paying billions of dollars in federal income tax each year.
ITINs became the de facto identification document immigrants without SSNs use to open bank accounts, file taxes, and build credit. Banks accepting ITINs has been settled policy for more than twenty years.
The Trump order targets the ITIN as a banking risk flag, unwinding the practical accommodation banks have made since the 1990s.
