- Illinois requires out-of-state sellers to collect and remit sales tax if they exceed $100,000 in gross revenue from Illinois sales in the previous 12 months.
- As of January 1, 2026, the 200 transaction threshold has been removed; only the revenue threshold applies.
- The economic nexus law in Illinois went into effect on October 1, 2018.
- Sellers meeting the threshold must register for an Illinois sales tax permit, collect sales tax on Illinois shipments, and remit it to the state.
- TaxJar offers tools and services to help businesses register, collect, and file Illinois sales tax.
Source: taxjar.com
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
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