St 556 Form - Web the illinois department of revenue dec. Sign into your online account and. 1, 2021 published a revised guide for reporting sales using form st. Web when you sell an item to a customer (whether the item is already in your sales inventory or is factory. Web if you are a leasing company engaged in the business of selling such previously leased items to illinois purchasers and the items.
Web when you sell an item to a customer (whether the item is already in your sales inventory or is factory. Sign into your online account and. Web the illinois department of revenue dec. 1, 2021 published a revised guide for reporting sales using form st. Web if you are a leasing company engaged in the business of selling such previously leased items to illinois purchasers and the items.