Sales tax permit · Illinois
Registering for a Illinois sales tax permit
Illinois's state sales tax rate is 6.25%, local taxes come on top, and its remote seller threshold is $100,000 in sales, measured over the preceding 12 months (four quarters), checked quarterly. If your business has crossed it and needs a permit, we prepare and submit the Illinois registration through tax.illinois.gov/research/publications/pubs/retailers-overview-of-sales-and-use-tax/registering-your-business.html for $99, plus any state fee at cost.
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Illinois's threshold, in its own words
Since January 1, 2026 only the $100,000 gross receipts test applies; the 200-transaction test was removed. 6.25% is the state rate on general merchandise.
Illinois has a marketplace facilitator law, so sales through a marketplace that collects for you are handled by the marketplace.
Registration portal: tax.illinois.gov/research/publications/pubs/retailers-overview-of-sales-and-use-tax/registering-your-business.html. Alabama · sales tax for online sellers
Paperwork only: whether your sales count toward the threshold is a tax question for your preparer. State fees at cost.
Sources
Questions
What is Illinois's remote seller threshold?
$100,000 in sales, measured over the preceding 12 months (four quarters), checked quarterly. The state's test has no transaction count.
Does Illinois have local sales taxes?
Yes, the state's pages say local taxes also apply on top of the 6.25% state rate.
Where do I register in Illinois?
On the state's portal, tax.illinois.gov/research/publications/pubs/retailers-overview-of-sales-and-use-tax/registering-your-business.html. We submit it there for you.
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Books you keep on your own computer
Tallyfinch does invoices, bills, bank import, reconciliation and the main reports, in a file you own. $99 once, then $5 a month for updates; the app keeps working if you stop the plan. It does not do payroll or sales tax filing. The free download records up to 60 entries.
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