https://www2.illinois.gov/services/IDOR/1040-es-payment-inquiry
1040 ES Payment Inquiry
View estimated payment details for your Individual Income Tax Return with MyTax Illinois.
https://www2.illinois.gov/services/IDOR/1099-g-lookup
1099-G Lookup
View your current year 1099-G Certain Government Payments information online with MyTax Illinois.
https://www2.illinois.gov/services/IDOR/business-tax-account
Business Tax Account Summary
View e-Services available for businesses.
https://www2.illinois.gov/services/IDOR/verify-registered-business
Verify a Registered Business
Verify an Illinois Business Registration here.
https://www2.illinois.gov/services/IDOR/Business Registration-taxes-revenue
Business Registration
Learn more about registration requirements for Illinois businesses.
https://www2.illinois.gov/services/IDOR/certificate-resale
Certificate of Resale
Learn more about Certificate of Resale requirements for Illinois businesses.
https://www2.illinois.gov/services/IDOR/copy-tax-return
Obtaining a Copy of a Tax Return
Access information on filing Form IL-4506 to obtain a copy of a state tax return.
https://www2.illinois.gov/services/IDOR/tax-rate-finder
Tax Rate Finder
Utilize the Tax Rate Database for more information on taxes administered by IDOR.
https://www2.illinois.gov/services/IDOR/unemployment-wage-withholding
Unemployment Tax, Wage Reports, & Withholding Filing
File your Employer’s Quarterly Contribution and Wage Report (UI-3/40) online with Illinois Taxnet.
https://www2.illinois.gov/services/IDOR/business-tax-registration-verification
Business Tax Registration Verification
Verify an Illinois Business Registration here.
https://www2.illinois.gov/services/IDOR/business-taxes-pay
Business Taxes Web Pay
Make business tax payments online with MyTax Illinois.
https://www2.illinois.gov/services/IDOR/estimated-payments
Estimated Payments
View estimated payment details for your Individual Income Tax Return.
https://www2.illinois.gov/services/IDOR/file-income-taxes
File Income Taxes
File income taxes online with MyTax Illinois.
https://www2.illinois.gov/services/IDOR/illinois-income-tax-filing
Illinois Income Tax Filing (IL-1040)
Use MyTax Illinois to electronically file your original Individual Income Tax Return.
https://www2.illinois.gov/services/IDOR/il-pin-inquiry
IL-PIN Inquiry
Access your IL-PIN online utlizing MyTax Illinois.
https://www2.illinois.gov/services/IDOR/income-tax-refund-status
Income Tax Refund Status Inquiry
Utilize 'Where's My Refund?' to find out
https://www2.illinois.gov/services/IDOR/individual-income-tax-payment
Individual Income Tax Payment
Check the status of your Illinois Individual Income Tax refund using 'Where’s My Refund?'
https://www2.illinois.gov/services/IDOR/sales-tax-filing
Sales Tax Web Filing
File sales taxes online utlizing MyTax Illinois.
https://www2.illinois.gov/services/IDOR/pay-business-taxes
Register to Pay Business Taxes
Electronically file your original Individual Income Tax Return with MyTax Illinois.
https://www2.illinois.gov/services/IDOR/withholding-household-employees
Unemployment & Withholding Tax for Household Employees
Access information on employer Withholding Income Tax requirements for household employees.
https://www2.illinois.gov/services/IDOR/tax-registration-inquiry
Tax Registration Inquiry
Utilize MyTax Illinois for tax registration inquiries.
https://www2.illinois.gov/services/IDOR/taxpayer-answer-center
Taxpayer Answer Center
Find an answer to your tax question by category.
https://www2.illinois.gov/services/IDOR/disaster-relief
Claiming Disaster Relief
Locate taxpayer information on claiming disaster relief
https://www2.illinois.gov/services/IDOR/withholding-tax-household
Withholding Tax for Household Employees
View additional information and reporting requirements for filing Withholding Income Tax for Household Employees.
https://www2.illinois.gov/services/IDOR/error-notice
Error Notice & Bill Inquiry
Utilize MyTax Illinois for error notices and bill inquiries.
https://www2.illinois.gov/services/IDOR/2848-power-attorney
IL-2848 Power of Attorney
Access information on IDOR Power of Attorney filing requirements.
https://www2.illinois.gov/services/IDOR/closing-business
Closing Your Business
Contact IDOR when closing a business to determine tax liabilities.
https://www2.illinois.gov/services/IDOR/il-1040-address-change
IL-1040 Address Change
Make IL-1040 address changes online with MyTax Illinois.
https://www2.illinois.gov/services/IDOR/sales-use-tax-registration-cetificate-revocation
Sales and Use Tax Registration Certificate Revocation
Sales and Use Tax Registration Certificate Revocation by the taxpayer’s business name and address or Account ID.
https://www2.illinois.gov/services/IDOR/withholding-tax-coupon
Withholding Tax Coupon Booklet Requests
Make your IL -501 payment online here.
https://www2.illinois.gov/services/IDOR/file-business-taxes
File Business Taxes
File business tax online with MyTax Illinois.
https://www2.illinois.gov/services/IDOR/w-2-transmitter
W-2 Transmitter Registration
Employers may electronically register and obtain their user ID (ETIN) and password for transmission of W-2s online.
https://www2.illinois.gov/services/IDOR/taxes-festivals
Taxes at Fairs Festivals Flea Markets and Craft Shows
View information on Illinois sales tax requirements for retailers.
https://www2.illinois.gov/services/IDOR/excise-tax-filings
Excise Tax Web Filings
https://www2.illinois.gov/services/IDOR/extension-payments
Extension Payments
View information on extension payments for Individual Income Tax (Sole Proprietorships).
https://www2.illinois.gov/services/IDOR/abusive-tax-avoidance
Abusive Tax Avoidance Transactions
View information on efforts to identify participants and material advisors of abusive tax avoidance transactions.
https://www2.illinois.gov/services/IDOR/motor-fuel-refund
Motor Fuel Refund Inquiry
View additional information on refunds related to Illinois taxes paid on motor fuel used for non-highway purposes.
https://www2.illinois.gov/services/IDOR/withholding-income-tax
Withholding Income Tax Web Filing
File Withholding Income Taxes online with MyTax Illinois.
https://www2.illinois.gov/services/IDOR/business-tax-registration
Business Tax Registration Online
File your Illinois Business Registration Application online with MyTax Illinois