Related Clues:

• XXX-XX-XXXX fig
• I.R.S. digits: Abbr
• Three-part fig
• Nine digit no
• Digital identifier
• 123-45-6789, on a sample doc
• ID first issued in 1936
• ID on a W-9 form
• Many a tax filer's need: Abbr
• Tax form fig
• ID that many memorize
• Fig. on tax forms
• Job application no
• Payroll ID, for short
• Fed. ID