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Form REG-1 (MyTax Illinois): how to file the illinois business registration (sales tax)

Register before your first purchase, sale or hire: online in MyTax Illinois (Register a New Business, Form REG-1), by mail or at an IDOR office. You get a certificate of registration and a taxpayer ID; Chicago's food license application asks for the Illinois Business Tax number.

Illinois Department of RevenueIsrael, nationalUpdated October 17, 2026

Agency
Illinois Department of Revenue
Where it applies
Israel, national
How it's filed
Filed online
Fee
VariesThe agency's page lists no fee for this.
How long it takes
About 1 to 2 business days online; 4 to 6 weeks on paper.

Official links

Checked against the agency's own page.

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