Illinois Dept of Revenue Phone Number 2026: Direct Hotline
A direct phone-number guide for people searching “Illinois Department of Revenue phone number.” Use this page to call the right Illinois Department of Revenue hotline for individual income tax, business tax, MyTax Illinois, refund questions, payment plans, collections, liens, business registration, regional offices, hearing-impaired TTY services and tax letters.
Quick Answer: Illinois Department of Revenue Phone Number
The main Illinois Department of Revenue phone numbers are 1-800-732-8866 and 217-782-3336. These are the primary taxpayer assistance numbers for Illinois income tax questions, business tax questions, refund help, MyTax Illinois routing, payment questions, tax letters, forms and general IDOR customer service.
Main taxpayer hotline
Call 1-800-732-8866 or 217-782-3336 for Illinois Department of Revenue taxpayer assistance.
Standard phone hours
Representatives are available Monday through Friday, 8 a.m. to 5 p.m., except on observed state holidays.
MyTax Illinois first
Many refund, payment, notice, business account and login tasks can be handled faster through MyTax Illinois before calling.
Illinois DOR Main Hotline: 1-800-732-8866 and 217-782-3336
Use the main hotline when you are not sure which IDOR unit handles your problem. The same numbers are listed across many Illinois tax forms and help pages.
| Contact item | Direct answer | Best use |
|---|---|---|
| Main toll-free hotline | 1-800-732-8866 | General taxpayer assistance, Illinois income tax, business tax, refund questions, letters and forms. |
| Springfield / direct phone | 217-782-3336 | Same general taxpayer assistance route when toll-free calling is not preferred. |
| Representative hours | Monday–Friday, 8 a.m.–5 p.m. | Closed on observed holidays. Filing-season extended hours may apply around deadline days. |
| Automated tax assistance | Available 24 hours a day, 7 days a week through IDOR phone assistance resources. | Useful for common questions when live representatives are not available. |
| Over-the-phone translation | Available through IDOR phone assistance. | Ask for language assistance after connecting. |
| Hearing-impaired TTY general inquiries | 1-800-544-5304 | General TTY inquiries. |
Illinois Department of Revenue Phone Directory 2026
Use this table to choose the right direct hotline before calling. If your latest IDOR notice lists a specific phone number or email, follow the notice first.
| Need | Phone number | Best use |
|---|---|---|
| General taxpayer assistance | 1-800-732-8866 or 217-782-3336 | Individual income tax, business tax, forms, letters, payments and general IDOR help. |
| Individual income tax help | 1-800-732-8866 or 217-782-3336 | IL-1040, refund questions, IL-PIN, notices, payments and filing help. |
| Business registration forms | 1-800-356-6302 | Registration forms by phone; paper registration processing may take several weeks. |
| Specific collections account inquiry | 217-785-2698 | Verify or discuss a specific collections account if you do not have MyTax Illinois access. |
| Liens | 217-785-5299 | Illinois tax lien questions and lien-related correspondence. |
| Payment plans | 217-785-8556 | Pay plan questions connected to IDOR collections. |
| Federal State Exchange Unit | 217-782-7962 | Federal/state exchange-related questions when directed by IDOR correspondence. |
| TTY general inquiries | 1-800-544-5304 | Hearing-impaired TTY general inquiries. |
| TTY collections | 1-888-261-2718 | Hearing-impaired TTY support for collections. |
| Lost or replacement Illinois refund check | 1-800-877-8078 | Illinois Comptroller replacement check questions after the refund check was issued. |
| Regional offices | 1-800-732-8866 | Chicago, Des Plaines, Fairview Heights, Marion, Rockford and Springfield regional office routing. |
Illinois DOR Phone Helper: Which Number Should You Call?
Choose your situation and this helper points you to the best Illinois Department of Revenue phone route. It does not collect personal data.
Select what you need. The helper will show the best phone number, what to prepare and the common call mistake to avoid.
Illinois DOR Refund Phone Number: When To Call and When To Use MyTax
For Illinois state refund questions, start with the official refund status page or MyTax Illinois before calling. If the refund status shows a mailed check that was lost, misplaced or not received more than 30 days after mailing, the Illinois Comptroller’s Office handles replacement check questions at 1-800-877-8078.
Use online refund status first when
- You recently filed an IL-1040 return.
- You know the tax year and expected refund amount.
- You want to avoid filing-season phone wait times.
- You need to confirm whether the refund was approved, adjusted or mailed.
- You need to check whether IDOR is still reviewing the return.
Call only after checking these details
- Was the Illinois return accepted?
- Was the refund direct deposit or paper check?
- Did IDOR send a letter or identity verification request?
- Did the status mention an adjustment, offset or hold?
- Was a paper check mailed more than 30 days ago?
MyTax Illinois Phone Help: Login, IL-PIN, Payments, Notices and Business Accounts
MyTax Illinois is the official online account system for many Illinois tax tasks. Use it for filing, payments, account alerts, business services, notices, lien registry, tax rate database and refund-related account access.
Use MyTax Illinois before calling when you need to
- Make a payment or set up eligible online payment options.
- Check account letters or alerts.
- Access business tax accounts.
- Use MyDec or other IDOR electronic services.
- Look up tax rate or registry tools.
- Confirm recent account activity.
Before calling about MyTax
- Have your username or email ready.
- Know the tax type and tax period.
- Have the letter ID or account alert if available.
- Prepare SSN/ITIN, FEIN or Illinois account details.
- Write down the error message or screenshot details.
Illinois Department of Revenue Collections Phone Numbers: Account, Lien and Pay Plan
If you received a bill, collection notice, lien notice, wage levy, bank levy, assessment or pay-plan letter, use the phone number on the latest IDOR correspondence first. If you do not have MyTax Illinois access, IDOR lists direct collections contacts for account inquiries, liens and pay plans.
| Collections issue | Direct phone | What to prepare |
|---|---|---|
| Specific collections account inquiry | 217-785-2698 | Latest correspondence, taxpayer ID, tax year/period, amount due and payment records. |
| Liens | 217-785-5299 | Lien notice, county filing information, tax period, payment proof and release question. |
| Payment plans | 217-785-8556 | Bill, account details, balance, proposed payment amount and current contact information. |
| Collections representative hours | Monday–Friday, 8 a.m.–4:30 p.m. | Call earlier in the day for complex account questions. |
| TTY collections | 1-888-261-2718 | Hearing-impaired TTY support for collections. |
Illinois Business Tax Phone Number: Registration, Sales Tax, Withholding and Notices
Business callers should identify the exact tax type before calling. Illinois business questions may involve registration, sales and use tax, withholding, business income tax, excise tax, MyTax Illinois, notices, payment plans or local tax rates.
Business callers should prepare
- FEIN and legal business name.
- Illinois Account ID if available.
- Tax type: sales, withholding, business income, excise or registration.
- Filing period and return confirmation.
- Notice, letter ID or account alert.
- Payment confirmation, bank record or voucher details.
Common business phone routes
- Main IDOR help: 1-800-732-8866 or 217-782-3336.
- Business registration forms: 1-800-356-6302.
- Collections account inquiry: 217-785-2698.
- Pay plans: 217-785-8556.
- Liens: 217-785-5299.
- MyTax Illinois for online account services.
Illinois Department of Revenue Local Office Phone and Regional Office Hours
Illinois DOR regional offices list 800-732-8866 as the office phone route. Office hours can differ from the main call center, and holidays can affect availability.
| Regional office | Address | Phone / hours |
|---|---|---|
| Chicago | Suite 1100, 555 West Monroe Street, Chicago, IL 60661 | 800-732-8866; Monday–Friday except holidays, 8:30 a.m.–5 p.m. |
| Des Plaines | Suburban North Regional Building, 9511 Harrison Street, Des Plaines, IL 60016-1563 | 800-732-8866; Monday–Friday except holidays, 8:30 a.m.–5 p.m. |
| Fairview Heights | Suite 2, 15 Executive Drive, Fairview Heights, IL 62208-1331 | 800-732-8866; Monday–Friday except holidays, 8:30 a.m.–5 p.m. |
| Marion | Suite 114, 2309 W. Main Street, Marion, IL 62959-1196 | 800-732-8866; Monday–Friday except holidays, 8:30 a.m.–5 p.m. |
| Rockford | 200 S. Wyman Street, Rockford, IL 61101 | 800-732-8866; Monday–Friday except holidays, 8:30 a.m.–5 p.m. |
| Springfield | Willard Ice Building, 101 West Jefferson Street, Springfield, IL 62702 | 800-732-8866 or 217-782-3336; Monday–Friday except holidays, 8 a.m.–5 p.m. |
Illinois DOR TTY, Translation and Accessibility Phone Help
Illinois DOR provides TTY services and over-the-phone translation services. Use the correct TTY route based on whether the issue is general assistance or collections.
Accessibility phone numbers
- TTY general inquiries: 1-800-544-5304.
- TTY collections: 1-888-261-2718.
- Over-the-phone translation services are available.
- Ask for language assistance when connected.
Prepare before calling
- Tax year or filing period.
- Tax type and notice number.
- SSN/ITIN or FEIN if applicable.
- Return copy, payment record or refund amount.
- Short written summary of your issue.
Illinois DOR Call Checklist: What To Prepare Before Dialing
A prepared call is usually shorter and more useful. Keep records in front of you before dialing the Illinois Department of Revenue hotline.
For individuals
- Social Security Number or ITIN.
- Tax year and filing status.
- Copy of your Illinois return.
- Expected refund amount if calling about refund status.
- Notice or letter ID.
- IL-PIN or MyTax Illinois account details if relevant.
- Payment confirmation or check copy.
For businesses
- FEIN and legal business name.
- Illinois Account ID.
- Tax type and filing period.
- MyTax Illinois username if login-related.
- Notice, collection letter or lien document.
- Filed return confirmation.
- Payment date, amount and confirmation number.
Illinois DOR Phone Scam Safety: Verify Before You Pay
Tax phone scams can imitate state agencies. Verify any call, email, text or payment demand through MyTax Illinois or official IDOR phone numbers before paying or sharing sensitive information.
| Suspicious sign | Safer response | Official route |
|---|---|---|
| Caller demands gift cards, crypto, wire transfer or instant payment. | Hang up and verify independently. | Call IDOR at 1-800-732-8866 or 217-782-3336. |
| Caller says a lien or levy will happen immediately unless you pay through an unofficial link. | Check MyTax Illinois or call the collections number from your official letter. | Collections account inquiry: 217-785-2698. |
| Text message uses a shortened refund or payment link. | Do not click it. | Type tax.illinois.gov or mytax.illinois.gov directly. |
| Caller asks for full SSN and bank details before explaining the account issue. | Ask for the letter ID or call IDOR yourself. | Use official Contact Us or MyTax Illinois. |
Official Illinois DOR Sources for Phone and Contact Details
Use these official resources for final phone numbers, refund status, MyTax Illinois, business registration, regional office hours, collection contacts and form-specific instructions.
Illinois Department of Revenue Phone Number FAQs
Visible FAQs below match the FAQPage schema included at the end of this article.
What is the Illinois Department of Revenue phone number?
The main Illinois Department of Revenue phone numbers are 1-800-732-8866 and 217-782-3336.
What are Illinois DOR customer service hours?
Illinois DOR representatives are available Monday through Friday, 8 a.m. to 5 p.m., except on observed holidays.
Does Illinois DOR offer automated phone assistance?
Yes. Illinois DOR tax assistance information says automated tax assistance is available 24 hours a day, 7 days a week.
What is the Illinois DOR TTY number for general inquiries?
The Illinois DOR TTY number for general inquiries is 1-800-544-5304.
What is the Illinois DOR TTY number for collections?
The Illinois DOR TTY number for collections is 1-888-261-2718.
Does Illinois DOR provide translation services by phone?
Yes. Illinois DOR says over-the-phone translation services are available.
What phone number should I call for Illinois refund questions?
Call Illinois DOR at 1-800-732-8866 or 217-782-3336 for Illinois state refund questions after checking the refund status tool.
What phone number replaces a lost Illinois refund check?
For a lost, misplaced or not received Illinois refund check after it was mailed, call the Illinois Comptroller’s Office at 1-800-877-8078.
What is the Illinois Department of Revenue collections account inquiry number?
For specific Illinois DOR collections account inquiries, call 217-785-2698.
What is the Illinois Department of Revenue lien phone number?
The Illinois DOR lien phone number is 217-785-5299.
What is the Illinois Department of Revenue payment plan phone number?
The Illinois DOR payment plan phone number is 217-785-8556.
What are Illinois DOR collections phone hours?
Illinois DOR collection representatives are available Monday through Friday, 8 a.m. to 4:30 p.m.
What phone number provides Illinois business registration forms?
Illinois business registration forms are available by calling 1-800-356-6302.
What is the phone number for MyTax Illinois help?
For many MyTax Illinois issues, start with the main Illinois DOR assistance numbers: 1-800-732-8866 or 217-782-3336.
What is the Illinois Department of Revenue Chicago office phone number?
The Chicago regional office lists 800-732-8866 as the phone number.
What is the Illinois Department of Revenue Springfield phone number?
The Springfield regional office lists 800-732-8866 and 217-782-3336.
What should I prepare before calling Illinois DOR?
Prepare your tax year, tax type, SSN or FEIN, Illinois Account ID if applicable, letter ID, refund amount, payment confirmation and a short summary of the issue.
Should I call Illinois DOR or use MyTax Illinois first?
Use MyTax Illinois first for many account, payment, letter and business tasks. Call IDOR when the online account cannot answer your issue or a notice instructs you to call.
Can I call Illinois DOR about a federal IRS refund?
No. Illinois DOR handles Illinois state tax matters. Federal refund questions should be handled through IRS tools and IRS contact options.
Is this website the official Illinois Department of Revenue website?
No. This is an independent informational guide. Use official Illinois Department of Revenue and MyTax Illinois pages for final phone, filing, refund, payment, account and legal tax decisions.
Final Recommendation: Call the Right Illinois DOR Hotline First
For most Illinois Department of Revenue questions, call 1-800-732-8866 or 217-782-3336. For collections account inquiries, call 217-785-2698. For liens, call 217-785-5299. For payment plans, call 217-785-8556. For business registration forms, call 1-800-356-6302. Use MyTax Illinois and Where’s My Refund before calling whenever possible.
Last editorial update: June 7, 2026. Verify final phone, refund, payment, MyTax, collection, regional office and legal tax details on official Illinois Department of Revenue pages.