Illinois State Tax Rulings
Free plain-English summaries of state tax letter rulings and advisory opinions issued in Illinois, with full citations and the original source on every page.
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Does a company create Illinois sales-tax nexus by having a resident employee, using independent-contractor transcriptionists who work from home, and occasionally sending employees onsite to customer locations?
The Department declined to make a specific nexus determination in this GIL, saying nexus is too fact-specific for a General Information Letter and is better handled by an auditor. Instead, it explaine…
When a construction contractor buys materials and permanently installs them into real property, who owes Illinois Use Tax, and can a subcontractor's out-of-state tax payment avoid double taxation down the sales chain?
The construction contractor (or subcontractor doing the installing) that permanently affixes tangible personal property to real estate is the 'end user' of that property and owes Illinois Use Tax on i…
Does the Illinois manufacturing machinery and equipment exemption cover the welding gases (argon, helium, and O2) a metal fabricator uses in its MIG/TIG welding process?
No. The Department of Revenue advised that gases generally are not exempt under the manufacturing machinery and equipment exemption, citing 86 Ill. Adm. Code 130.330(c). This corrected an earlier 2011…
When does an out-of-state seller that stores inventory in an Illinois marketplace warehouse have to register and collect Illinois sales or use tax?
It depends on nexus: if the out-of-state seller's inventory is held in Illinois at the time of sale (or is produced there), the seller is treated as an Illinois retailer that must register and collect…
Does an out-of-state company that sells downloaded software over the internet, with no Illinois office or employees, have to collect Illinois sales/use tax on those sales?
It depends on whether the seller has nexus with Illinois. Under the Quill two-prong test, a retailer must have physical presence in Illinois (such as an office, agent, representative, or repetitive de…
Could a short-term car-rental company sell its fleet to a related title-holding entity and lease it back without Retailers' Occupation Tax or Use Tax?
Yes under the rental-use exemptions, though not as an occasional sale. The rental company and title-holding entity had agreed before transfer that the vehicles would continue in short-term rentals sub…
Does an out-of-state seller of a hardware device and a cloud-based software subscription have to collect Illinois sales tax, and does the Illinois customer owe use tax if it doesn't?
It depends on whether the out-of-state business has nexus with Illinois. If it is an 'Illinois Retailer' or a 'retailer maintaining a place of business in Illinois' (which can include an in-state agen…
Does Illinois Use Tax apply when someone brings a vehicle bought overseas into Illinois after living there as a nonresident?
It depends on residency: Illinois Use Tax does not apply to a vehicle acquired outside Illinois by a nonresident individual who used it outside Illinois for at least 3 months before bringing it into t…
When a motor vehicle is sold to a leasing company for a long-term lease (over one year), who owes Retailers' Occupation Tax or Use Tax, and does that include any tax amount the lessor passes through to the lessee?
The dealer that sells the vehicle to the leasing company owes Retailers' Occupation Tax, and the leasing company (as purchaser/user) owes Use Tax; the lessee owes neither tax directly. For leases long…
Could a de minimis pan-refurbishing serviceman buy glaze tax-free when it became part of customers' exempt commercial baking equipment?
Yes for properly documented industrial-baker customers. The glaze was cured into and became part of exempt baking pans used in manufacturing, so the serviceman could buy it tax-free from Illinois supp…
How did Illinois classify a tissue bank's cost-plus charges for providing donated non-transplantable human remains for research and training?
IDOR said the tissue bank appeared to sell services, not make retail sales, so it did not incur Retailers' Occupation Tax. Tangible remains transferred with the service could create Service Occupation…
When a retailer sells and installs an appliance, is installation taxable and does the retailer become a construction contractor?
The appliance sale was taxable. Installation was included in taxable selling price only when bundled into that price; a separately agreed or separately listed installation charge was a nontaxable serv…
Does a lessee owe Illinois tax when buying a car at the end of a true lease after reimbursing the lessor's original Use Tax?
Yes. The original payment was likely a private contractual reimbursement of the lessor's up-front Use Tax, not the lessee's own tax liability. The later buyout was a separate retail sale, so the purch…
Who owed Illinois tax when a glass contractor permanently installed materials, used subcontractors, and also sold some items over the counter?
The construction contractor was the end user and owed Use Tax on the cost of materials permanently incorporated into Illinois real estate, regardless of lump-sum billing. Customers owed no Use Tax, th…
Did Illinois Use Tax apply when a new resident brought in an aircraft titled to an LLC after paying tax in another state?
Yes, and Form RUT-25 was required when the aircraft was titled or registered in Illinois. The exemption for a nonresident individual who used property outside Illinois for at least three months did no…
Where did an Illinois distributor source local tax on warehouse walk-ins and sales processed through a separate headquarters office?
Walk-in sales were sourced to the warehouse city because binding the sale, payment and invoicing, and inventory were there. All other Illinois sales were sourced to the Illinois headquarters city afte…
Could an Illinois landscape contractor buy temporary project materials tax-free when working for a government or other exempt entity?
Generally no. A landscape contractor could buy property tax-free for permanent incorporation into exempt-entity real estate by giving the supplier the required certification. But silt fencing, ditch c…
When were a retailer's separately identified shipping charges excluded from Illinois sales tax?
Shipping was nontaxable when it was separately identified and the buyer could obtain the goods without paying a delivery charge, such as through qualifying free delivery or pickup, while the product p…
Who owed Illinois tax when an out-of-state company leased semi-trailers for use in Illinois under true leases?
The lessor owed Illinois Use Tax on its cost price when true-leased trailers were brought into Illinois; rental receipts were not taxed and the lessee owed no tax. Tax properly due and paid to another…
How did Illinois tax a security-system contract that included permanently installed components and movable clip-on cameras?
When the complete security system was sold and installed for one specified contract price, the installer could treat the work as a construction contract and pay Use Tax to suppliers on all related equ…
Who owed Illinois tax when a company leased computer and audiovisual equipment and then re-leased it to customers?
For a true lease, the original lessor was the end user and owed Use Tax on its cost; Illinois imposed no tax on rental receipts, so the lessee and sublessee incurred no tax liability. A conditional sa…
Who owed Illinois tax when a financing company paid a contractor to install energy-efficiency equipment and recovered costs through a capital lease?
The installer owed Use Tax on its cost because the LED or HVAC work was a construction contract improving real estate. The financing company could not give a resale certificate and was not technically…
Were a fuel hauler's rebillings sales for resale when fuel was charged to one customer but delivered to another?
They appeared exempt as sales for resale on the limited facts, but only with proper documentation. The purchaser had to provide a signed Certificate of Resale using its own active registration or resa…
Did a contractor installing blinds, shutters, and flooring pay Use Tax on materials or collect sales tax from the customer?
The contractor paid Use Tax on its cost of materials permanently affixed to real estate and did not owe Retailers' Occupation Tax on construction-contract receipts. The customer owed no Use Tax, and a…
How did Illinois tax a custom-sign seller that separately billed freight and installation for signs attached to buildings or concrete-set poles?
IDOR did not give one result for every sale. It said sign vendors could owe Retailers' Occupation Tax, Service Occupation Tax, or Use Tax depending on the facts; a vendor acting as a construction cont…
Were services previously found outside Illinois telecommunications excise tax subject to Retailers' Occupation, Use, or Service Occupation Tax?
Not if the services transferred no tangible personal property. IDOR declined a supplemental PLR but explained that pure services were outside Retailers' Occupation and Use Tax, and Service Occupation …
How did Illinois tax steel cable reels and customer reel deposits when the manufacturer retained or transferred ownership?
Ownership controlled. If the manufacturer transferred reel title with the cable, it could buy the reel for resale and the deposit followed the cable sale's tax treatment. If it retained title and reus…
Must an Illinois caterer tax separately billed equipment, labor, setup, and delivery, and how are cleaning supplies treated?
Yes. A caterer's taxable gross receipts included food-related charges for linens, tables, chairs, dishes, flowers, labor, setup, and delivery even when separately billed. Truly separate non-food enter…
Could an Illinois retailer advertise sales as tax-free, omit tax from receipts, and pay the sales tax itself?
No. The retailer had to collect Use Tax from customers by adding it to the selling price. Advertising that sales were tax-free or that the retailer would absorb the tax violated the Use Tax Act and wa…
How did Illinois distinguish a taxable conditional sale from a true lease of equipment?
A nominal purchase option or guaranteed sale generally made the arrangement a conditional sale, so all lessor receipts were taxable. A true lease generally had no buyout, or only a fair-market-value o…
How did Illinois sales-tax credit rules apply when a defective boat was replaced through a lawsuit settlement?
The result depended on structure. If the dealer refunded the first boat's price and tax and the customer bought a second boat, whoever paid the first tax to IDOR could seek credit or refund. If the fi…
How did Illinois tax materials bought by construction contractors for permanent incorporation into real estate?
Contractors were the end users and owed Use Tax on material cost, generally paying suppliers and not issuing resale certificates. Customers owed no Use Tax, and any pass-through could be labeled reimb…
Did out-of-state liquor sellers have to collect Illinois tax on alcohol and shipping, and how could they recover tax paid in error?
IDOR did not make a seller-specific nexus determination. Under its 2015 framework, a seller without Illinois nexus did not collect, but customers self-assessed Use Tax; a direct-shipping winery licens…
How did Illinois tax equipment fabricated out of state and permanently installed by out-of-state contractors at an Illinois jobsite?
IDOR could not decide without the contracts. A contractor permanently affixing equipment to Illinois real estate was the end user and owed Use Tax on cost. Under the 2015 letter, the State rate was 6.…
Was Use Tax due on leased computer servers placed in an Illinois data center for cloud-hosting customers outside Illinois?
The servers were taxable tangible personal property. IDOR could not classify the lease without its contracts. If it was a true lease, the lessor owed Use Tax on server cost and rental receipts were un…
Did leasing an aircraft acquired for resale stop or restart Illinois's 18-month interim-use period?
IDOR did not answer either lease-timing question and only directed the dealer to Section 150.306. The GIL's official synopsis states that when aircraft or watercraft demonstration or interim use excee…
How did Illinois tax a company installing and maintaining railroad-track lubricators, including parts, labor, delivery, and travel charges?
IDOR could not classify every charge without the contracts and invoices. If the company permanently affixed property to real estate, it was a construction contractor and end user owing Use Tax on mate…
How did Illinois distinguish true equipment leases from conditional sales, and could a collection agent remit the lessor's tax under its own ID?
IDOR did not classify the contracts. A true lessor was the end user, owed Use Tax on equipment cost, could not buy it for resale, and owed no tax on rental receipts. A conditional sale made all receip…
When is Illinois sales tax due on computer software licenses and software maintenance agreements?
Canned (prewritten) computer software is taxable tangible personal property in Illinois, whatever the medium; genuinely custom software may not be. A software license is not a taxable retail sale if t…
When are Illinois trailer sales or leases taxable, and when can the rolling stock exemption apply?
A trailer sale or conditional lease-sale generally triggers Retailers' Occupation Tax. Under a true lease, the lessor is the user and owes Use Tax on its cost, while rental receipts are not taxed. The…
Are Illinois membership fees taxable when members also receive guides, magazines, and marketing materials?
A pure membership fee is generally an intangible and is not subject to Retailers' Occupation Tax or Use Tax when no tangible personal property is transferred. But this association also described guide…
When do Illinois construction contractors owe use tax, and what documentation supports exempt-entity or enterprise-zone purchases?
Construction contractors were end users and owed Use Tax on the cost of property permanently incorporated into Illinois real estate. Audiovisual and telecommunications systems sold and installed for o…
Who owes Illinois use tax when a subcontractor buys and installs drainage tile as part of a pipeline project?
The party contractually required to buy drainage tile for permanent incorporation into real estate was the construction contractor and owed Use Tax on its cost. If the subcontractor bought and install…
What nexus rules did Illinois describe for remote retailers in 2014, and are those physical-presence rules still current?
IDOR declined to decide the affiliated companies' nexus because it required an auditor's fact-intensive investigation. The 2014 GIL described then-controlling Quill physical-presence rules, including …
Could a company stop filing monthly Illinois ST-1 returns because its shipments were international and its returns showed no sales-tax liability?
IDOR did not approve stopping the returns because the company's transaction details were insufficient. A registered retailer generally must file Form ST-1 monthly even without a minimum sales threshol…
May an Illinois water utility buy treatment chemicals tax-free when the chemicals remain in pipe-delivered water sold to customers?
Yes, for chemicals transferred as component parts of pipe-delivered water. Public Act 98-583 excludes that water from Illinois sales and use taxes, so the utility may buy component chemicals tax-free …
For goods sent to an Illinois consolidator or warehouse before a final store, is tax based on the interim ship-to location or the ultimate destination?
IDOR did not determine which location controlled because the facts were insufficient. It said a registered seller must collect Illinois Use Tax on an Illinois delivery unless it documents an exemption…
In an Illinois drop shipment, may the supplier omit tax when the out-of-state reseller lacks an Illinois number but the end customer promises to self-assess?
The supplier must collect Illinois tax unless it documents that its sale to the out-of-state purchaser is for resale. The preferred proof is a signed certificate carrying an Illinois registration or r…
How should an Illinois propane delivery truck using a propane-diesel conversion system calculate tax on propane burned for highway travel?
Propane bought for off-highway use was not subject to Motor Fuel Tax, but any amount later burned to propel a vehicle on Illinois public highways became taxable. IDOR said the best calculation general…
Did an Illinois hotel owe Hotel Operators' Occupation Tax when a guest redeemed loyalty points for a complimentary room?
Generally no, when Hotel Operators' Occupation Tax was remitted on the original paid stays and the reimbursement fund was wholly owned by the hotel franchisor. The answer could change if a third party…
Could a cash-management company pay tax on customer safes and then bill one untaxed charge for the safe, armored transport, and cash services?
IDOR said the company appeared to be the end user of the safe and therefore owed Use Tax on it. But it would not confirm that the single customer charge was untaxed without reviewing the customer agre…
Were airline tickets bought online subject to Illinois Retailers' Occupation Tax or Use Tax?
No. IDOR said an airline ticket was not tangible personal property, so its sale was not subject to Illinois Retailers' Occupation Tax or Use Tax. The answer did not change based on whether the online …
How could an out-of-state seller document an Illinois drop shipment as a sale for resale without Illinois nexus?
The Illinois supplier had to collect tax or document the distributor's resale purchase. The preferred proof was a resale certificate with an active Illinois registration or resale number; a no-nexus o…
Did the permanent-affixation test for a construction contractor's tank depend on the property being in an enterprise zone?
No. IDOR said the permanent-affixation analysis it had quoted from ST 08-0003-PLR remained applicable even though the facility was not in an enterprise zone. When a construction contractor permanently…
Was a rental company's one-off sale of a used man lift from rental inventory subject to Illinois sales or use tax?
No, under the stated non-motor-vehicle facts. A business that was strictly a lessor and sold only items no longer needed in its rental inventory made a nontaxable isolated or occasional sale. The less…
Who owed Illinois tax on equipment provided under a lease with a $1 purchase option when the out-of-state lessor lacked Illinois nexus?
The $1 purchase option generally made the arrangement a conditional sale rather than a true lease. In the situation described, if the out-of-state lessor lacked Illinois nexus and was not registered, …
Did a 250,000-gallon fire-protection tank bolted to a concrete foundation remain personal property, or was the subcontractor a construction contractor owing Use Tax on materials?
IDOR did not decide whether this tank was permanently incorporated into real estate. It said the classification was highly fact-intensive and directed the subcontractor to prior letters, including a P…
Did an out-of-state company owe Illinois tax on receipts from renting chassis through an Illinois container terminal?
It depended on the agreement. For a true lease—generally one with no buyout or only a fair-market-value option—Illinois imposed no tax on rental receipts and the lessee owed no tax; the lessor was the…
Were college textbook rental fees taxable when the bookstore allowed a student to buy the book during or after the rental?
IDOR did not classify the bookstore's rental agreement or specifically decide its late and nonreturn charges. A true lease generally had no buyout or only a fair-market-value option; Illinois did not …
What Illinois rules should a wholesaler use to validate resale certificates and customers' certificates of registration?
The GIL did not answer the wholesaler's detailed questionnaire item by item. It directed the seller to 86 Ill. Adm. Code 130.1405 and Subpart N for certificates of resale and sales for resale, and to …
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These are official tax letter rulings and advisory opinions issued by Illinois's revenue authority in response to questions from specific taxpayers about how the tax law applies to their facts. A ruling is binding on the department only for the taxpayer who requested it and cannot be relied on by anyone else, but it is strong evidence of how the state reads the law. Every ruling above has a plain-English question and short answer, plus a link to the full original source.