Illinois Sales Tax Permit Cost (2026)
Registering for a sales-tax permit (seller's permit) in Illinois is free. Free registration; some registrants may be asked to post a security bond. You'll need it before you can legally collect sales tax from customers.
Verified July 2026 from official sources. How we verify fees.
What it costs in Illinois
- Registration fee: Free
- Renewal: No renewal
- Resale certificate: free / self-issued
- Also needed: an EIN (free from the IRS) and usually a registered business
How it works
You register through the Illinois Department of Revenue, usually online, and receive your permit (often the same day). Free registration; some registrants may be asked to post a security bond. A sales-tax permit is separate from forming the business itself — see our Illinois LLC and DBA cost pages for those fees.
Frequently asked questions
How much is a sales tax permit in Illinois?
It's free to register for a seller's permit in Illinois.
Do I need a sales tax permit in Illinois?
Yes, if you sell taxable goods or services in Illinois — you must register before collecting any sales tax from customers.
Does a Illinois sales tax permit expire?
Renewal: no renewal.