Get Answers Support Tax Filings & Payments State Filings 1099 State Filing Illinois: 1099 State Filing Requirements The State of Illinois mandates filing Form 1099 with the state agency under the following conditions. Illinois State ID Format: 9 digits (Eg: 999999999) Note: The state accepts your federal EIN as state ID. Required 1099 Forms Illinois requires the filing of the following 1099 forms: 1099-NEC 1099-MISC 1099-K 1099-INT 1099-DIV 1099-R 1099-B 1099-G 1099-OID W-2G Filing Criteria and Requirements 1: If Illinois state tax is withheld Payment Threshold: More than $0 Filing Method: Direct State Filing You must file Form 1099 directly with the state. Additional Form Required: Not required Deadline: March 31, 2026 2: If no Illinois state tax is withheld Payment Threshold: Euqal to or more than the federal threshold Filing Method: Direct State Filing You must file Form 1099 directly with the state. Additional Form Required: Not required Deadline: March 31, 2026 Note: If the total payment is less than $600, the state doesn’t require the filing of 1099 forms. For more information about Illinois 1099 filing requirements, click here. Was this helpful? Yes No Related Questions Illinois - W2 State Filing Requirements North Dakota: 1099 State Filing Requirements Oklahoma: 1099 State Filing Requirements Pennsylvania: 1099 State Filing Requirements Go to Home Page Need more help? Get in touch with our dedicated support team Contact Us (704) 684-4751 support@taxbandits.com Sign Up for a FREE TaxBandits Account! The Smart CPA Choice Register Now Already have an account? Sign in