- October 1 – The Illinois Department of Revenue releases Sales and Use Tax Form CRT-63 “Sales Through Marketplace Facilitator Certificate.” (PDF). This certificate, which must be renewed annually, must be provided by marketplace facilitators to marketplace sellers. The certificate must be maintained with the marketplace seller’s books and records to show no tax is due.
- August 27 – Governor J.B. Pritzker signs S.B. 2066, which allows marketplace sellers to claim a retroactive retailers’ occupation tax credit for sales in 2020 for which a marketplace facilitator has already remitted tax.