TITLE 86: REVENUE
CHAPTER I: DEPARTMENT OF REVENUE
PART 140 SERVICE OCCUPATION TAX
SUBPART A: NATURE OF TAX
Section 140.101 Basis and Rate of the Service Occupation Tax
Section 140.105 Calculation of Tax Incurred by Servicemen – Threshold Determination of Cost Ratio
Section 140.106 When Cost Ratio is 35% or Greater, Service Occupation Tax Liability Is Incurred by Servicemen on Their Selling Price
Section 140.108 "De Minimis" Servicemen Who Incur Use Tax on Their Cost Price
Section 140.109 "De Minimis" Servicemen Who Incur Service Occupation Tax on Their Cost Price
Section 140.110 Example of Methods Used by Servicemen to Determine Liability
Section 140.115 Occasional Sales to Servicemen by Suppliers (Repealed)
Section 140.120 Meaning of Serviceman
Section 140.124 Commercial Distribution Fee Sales Tax Exemption (Repealed)
Section 140.125 Examples of Nontaxability
Section 140.126 Taxation of Food, Drugs and Medical Appliances
Section 140.127 Service Provided to Persons Who Lease Tangible Personal Property to Exempt Hospitals
Section 140.128 Persons Who Lease Tangible Personal Property to Governmental Bodies
Section 140.129 Taxation of Seminar Materials
Section 140.130 Suppliers of Printers (Repealed)
Section 140.135 Sales of Drugs and Related Items, to or by Pharmacists (Repealed)
Section 140.140 Other Examples of Taxable Transactions
Section 140.141 Warranty Repairs
Section 140.145 Multi-Service Situations
SUBPART B: DEFINITIONS
Section 140.201 General Definitions
SUBPART C: BASE OF THE TAX
Section 140.301 Cost Price
Section 140.305 Refunds by Serviceman
SUBPART D: TAX RETURNS
Section 140.401 Monthly Returns When Due – Contents of Returns
Section 140.405 Annual Tax Returns
Section 140.410 Final Return
Section 140.415 Taxpayer's Duty to Obtain Form
Section 140.420 Annual Information Returns by Servicemen
Section 140.425 Filing of Returns for Serviceman by their Suppliers Under Certain Circumstances
Section 140.430 Incorporation by Reference
SUBPART E: INTERSTATE COMMERCE
Section 140.501 Sales of Service Involving Property Originating in Illinois
Section 140.505 Sales of Service Involving Property Originating Outside of Illinois (Repealed)
SUBPART F: REGISTRATION UNDER THE SERVICE OCCUPATION TAX ACT
Section 140.601 General Information
SUBPART G: BOOKS AND RECORDS
Section 140.701 Books and Records - Requirements
SUBPART H: PENALTIES, INTEREST AND PROCEDURES
Section 140.801 General Information
SUBPART I: WHEN OPINIONS FROM THE DEPARTMENT ARE BINDING
Section 140.901 Written Opinions
SUBPART J: COLLECTION OF THE TAX
Section 140.1001 Payment of Tax
Section 140.1005 Receipt to be Obtained for Tax Payments
Section 140.1010 Payment of Tax Directly to the Department (Repealed)
Section 140.1015 Itemization of the Tax by Suppliers (Repealed)
Section 140.1020 Use of Bracket Chart
Section 140.1025 Advertising in Regard to the Tax
SUBPART K: TIMELY MAILING TREATED AS TIMELY FILING AND PAYING – MEANING OF DUE DATE WHICH FALLS ON SATURDAY, SUNDAY OR A HOLIDAY
Section 140.1101 Filing of Documents with the Department
SUBPART L: LEASED PORTIONS OF LESSOR'S BUSINESS SPACE
Section 140.1201 When Lessee of Premises May File Return for Leased Department
Section 140.1205 When Lessor of Premises Should File Return for Leased Department
Section 140.1210 Meaning of "Lessor" and "Lessee" in this Regulation
SUBPART M: USE OF EXEMPTION CERTIFICATES
Section 140.1301 When Purpose of Serviceman's Purchase is Known (Repealed)
Section 140.1305 When Purpose of Serviceman's Purchase is Unknown
Section 140.1310 Blanket Percentage Exemption Certificates (Repealed)
SUBPART N: CLAIMS TO RECOVER ERRONEOUSLY PAID TAX
Section 140.1401 Claims for Credit – Limitations – Procedures
Section 140.1405 Disposition of Credit Memoranda by Holders Thereof
Section 140.1410 Refunds
Section 140.1415 Interest
Section 140.1420 Verified Credit
SUBPART O: DISCONTINUATION OF A BUSINESS
Section 140.1501 Procedures
SUBPART P: NOTICE OF SALES OF GOODS IN BULK
Section 140.1601 Requirements and Procedures
SUBPART Q: POWER OF ATTORNEY
Section 140.1701 General Information
AUTHORITY: Implementing the Service Occupation Tax Act [35 ILCS 115] and authorized by Section 2505-100 of the Civil Administrative Code of Illinois. (Department of Revenue Law) [20 ILCS 2505/2505-100].
SOURCE: Adopted May 21, 1962; amended at 3 Ill. Reg. 23, p. 161, effective June 3, 1979; amended at 3 Ill. Reg. 44, p. 198, effective October 19, 1979; amended at 4 Ill. Reg. 24, pp. 526, 536 and 550, effective June 1, 1980; amended at 5 Ill. Reg. 822, effective January 2, 1981; amended at 6 Ill. Reg. 2879, 2883, 2886, 2892, 2895 and 2897, effective March 3, 1982; codified at 6 Ill. Reg. 9326; amended at 9 Ill. Reg. 7941, effective May 14, 1985; amended at 11 Ill. Reg. 14090, effective August 11, 1987; emergency amendment at 12 Ill. Reg. 14419, effective September 1, 1988, for a maximum of 150 days; emergency expired January 29, 1989; amended at 13 Ill. Reg. 9388, effective June 6, 1989; amended at 14 Ill. Reg. 262, effective January 1, 1990; amended at 14 Ill. Reg. 15480, effective September 10, 1990; amended at 15 Ill. Reg. 5834, effective April 5, 1991; amended at 18 Ill. Reg. 1550, effective January 13, 1994; amended at 20 Ill. Reg. 5379, effective March 26, 1996; amended at 20 Ill. Reg. 7008, effective May 7, 1996; amended at 20 Ill. Reg. 16211, effective December 16, 1996; amended at 24 Ill. Reg. 8125, effective May 26, 2000; emergency amendment at 25 Ill. Reg. 1811, effective January 16, 2001, for a maximum of 150 days; amended at 25 Ill. Reg. 4971, effective March 23, 2001; amended at 25 Ill. Reg. 6531, effective May 3, 2001; amended at 26 Ill. Reg. 4905, effective March 15, 2002; amended at 27 Ill. Reg. 812, effective January 3, 2003; emergency amendment at 27 Ill. Reg. 11187, effective July 1, 2003, for a maximum of 150 days; emergency expired November 27, 2003; emergency amendment at 28 Ill. Reg. 15257, effective November 3, 2004, for a maximum of 150 days; emergency expired April 1, 2005; amended at 29 Ill. Reg. 1940, effective January 24, 2005; amended at 29 Ill. Reg. 7070, effective April 26, 2005; amended at 32 Ill. Reg. 13845, effective August 11, 2008; amended at 42 Ill. Reg. 19034, effective October 4, 2018; amended at 43 Ill. Reg. 8889, effective July 30, 2019; amended at 46 Ill. Reg. 18152, effective October 25, 2022; amended at 46 Ill. Reg. 18843, effective November 1, 2022; amended at 47 Ill. Reg. 5251, effective March 21, 2023; amended at 47 Ill. Reg. 5771, effective April 4, 2023; amended at 48 Ill. Reg. 1939, effective January 18, 2024; expedited correction at 48 Ill. Reg. 8132, effective January 18, 2024; amended at 48 Ill. Reg. 14809, effective September 25, 2024; amended at 49 Ill. Reg. 3194, effective February 26, 2025; amended at 49 Ill. Reg. 10805, effective April 1, 2025; amended at 49 Ill. Reg. 10805, effective August 8, 2025.
SUBPART A: NATURE OF TAX
Section 140.101 Basis and Rate of the Service Occupation Tax
a) The Service Occupation Tax Act (the Act or the SOTA) [35 ILCS 115] imposes a tax upon persons engaged in this State in the business of making sales of service, based on tangible personal property transferred incident to sales of service. These persons are referred to in this Part as servicemen.
b) Rate of Tax
1) The rate of service occupation tax (SOT) incurred by a serviceman from October 1, 1969 through December 31, 1983, is 4%, and on and after January 1, 1984 and prior to January 1, 1990, is 5% of the serviceman's cost price of tangible personal property transferred by the serviceman incident to a sale of service. On and after January 1, 1990, if SOT is computed on the selling price or use tax is computed on the cost price of the tangible personal property transferred incident to sales of service, the rate is 6.25%. Effective January 1, 1990 and prior to July 1, 2003, sales of "gasohol", as defined in Section 3-40 of the Use Tax Act, are subject to tax, based upon 70% of the cost price of gasohol transferred as an incident to the sale of service. However, from July 1, 1997 to June 30, 1998, the rate was 85% for gasohol sold in this State during the 12 months beginning July 1 following any calendar year for which the Department determined that the percentages in Section 10 of the Gasohol Fuels Tax Abatement Act were not met. The Gasohol Fuels Tax Abatement Act was repealed effective July 1, 1998. On and after July 1, 2003 and on or before July 1, 2017, tax shall be based upon 80% of the selling price of gasohol transferred as an incident to the sale of service. After July 1, 2017, and prior to January 1, 2024, tax shall be based upon 100% of the selling price of gasohol transferred as an incident to the sale of service. On and after January 1, 2024, and prior to January 1, 2029, tax shall be based upon 90% of the selling price of gasohol transferred as an incident to the sale of service. On and after January 1, 2029, tax shall be based upon 100% of the selling price of gasohol transferred as an incident to the sale of service. Effective July 1, 2003, if at any time the tax under the SOTA on sales of gasohol is imposed at the rate of 1.25%, then the tax imposed by the SOTA applies to 100% of the proceeds of sales of gasohol made during that time. With respect to mid-range ethanol blends, as defined in Section 3-44.3 of the Use Tax Act, the tax imposed by the SOTA applies to 80% of the selling price of property transferred as an incident to the sale of service on or after January 1, 2024 and on or before December 31, 2028 and 100% of the selling price of property transferred as an incident to the sale of service after December 31, 2028. If, at any time, however, the tax under the SOTA on sales of mid-range ethanol blends is imposed at the rate of 1.25%, then the tax imposed by the SOTA applies to 100% of the selling price of mid-range ethanol blends transferred as an incident to the sale of service during that time. With respect to majority blended ethanol fuel, as defined in Section 3-44 of the Use Tax Act, the tax imposed by the SOTA does not apply to the proceeds of sales made on or after July 1, 2003 and on or before December 31, 2028, but applies to 100% of the proceeds of sales made thereafter. With respect to biodiesel blends, as defined in Section 3-42 of the Use Tax Act, with no less than 1% and no more than 10% biodiesel, the tax imposed by the SOTA applies to 80% of the proceeds of sales made on or after July 1, 2003 and on or before December 31, 2018 and 100% of the proceeds of the selling price after December 31, 2018 and before January 1, 2024. On and after January 1, 2024, the taxation of biodiesel, renewable diesel, and biodiesel blends shall be as provided in 86 Ill. Adm. Code 130.320. If at any time, however, the tax under the SOTA on sales of biodiesel blends, as defined in the Use Tax Act, with no less than 1% and no more than 10% biodiesel is imposed at the rate of 1.25%, then the tax imposed by the SOTA applies to 100% of the proceeds of sales of biodiesel blends with no less than 1% and no more than 10% biodiesel made during that time. With respect to biodiesel, as defined in Section 3-41 of the Use Tax Act, and biodiesel blends, as defined in Section 3-42 of the Use Tax Act, with more than 10% but no more than 99% biodiesel, the tax imposed by the SOTA does not apply to the proceeds of sales made on or after July 1, 2003 and on or before December 31, 2023. [35 ILCS 115/3-10] On and after January 1, 2024, the taxation of biodiesel, renewable diesel, and biodiesel blends shall be as provided in 86 Ill. Adm. Code 130.320. On and after January 1, 1993, if SOT is computed on the cost price of tangible personal property transferred incident to service, the rate is also 6.25%. Exceptions to these rules, however, are as follows:
A) On and after January 1, 1984, and prior to January 1, 1990, food for human consumption that is to be consumed off the premises where it is sold (other than soft drinks, alcoholic beverages and food that has been prepared for immediate consumption and except as provided in subsection (b)(1)(B)) and prescription and nonprescription medicines, drugs, medical appliances and insulin, urine testing materials, syringes and needles used by diabetics, for human use, will be taxed at the rate of 0%. On and after January 1, 1990, except for the period beginning July 1, 2022 and until July 1, 2023 as provided in subsection (b)(1)(D), the rate of tax will be 1%. For further discussion of food for human consumption that is to be consumed off the premises where sold and prescription and nonprescription medicines, drugs, medical appliances, and similar items, see 86 Ill. Adm. Code 130.310 and 130.311.
B) Effective January 1, 1993, except for the period beginning July 1, 2022 and until July 1, 2023 as provided in subsection (b)(1)(D), food prepared for immediate consumption and transferred incident to a sale of service by an entity licensed under the Hospital Licensing Act or the Nursing Home Care Act shall be subject to tax at the rate of 1%. Effective August 13, 1999, except for the period beginning July 1, 2022 and until July 1, 2023 as provided in subsection (b)(1)(D), the 1% rate shall also apply to food prepared for immediate consumption and transferred incident to a sale of service by an entity licensed under the Child Care Act of 1969. Effective July 1, 2010 and through December 31, 2011, the 1% rate shall also apply to food prepared for immediate consumption and transferred incident to a sale of service by an entity licensed under the MR/DD Community Care Act. Effective January 1, 2012, except for the period beginning July 1, 2022 and until July 1, 2023 as provided in subsection (b)(1)(D), the 1% rate shall also apply to food prepared for immediate consumption and transferred incident to a sale of service by an entity licensed under the ID/DD Community Care Act. Effective June 28, 2011, except for the period beginning July 1, 2022 and until July 1, 2023 as provided in subsection (b)(1)(D), the 1% rate shall also apply to food prepared for immediate consumption and transferred incident to a sale of service by an entity licensed under the Specialized Mental Health Rehabilitation Act of 2013. Effective July 29, 2015, except for the period beginning July 1, 2022 and until July 1, 2023 as provided in subsection (b)(1)(D), the 1% rate shall also apply to food prepared for immediate consumption and transferred incident to a sale of service by an entity licensed under the MC/DD Act. Effective June 17, 2021, except for the period beginning July 1, 2022 and until July 1, 2023 as provided in subsection (b)(1)(D), the 1% rate shall also apply to food prepared for immediate consumption and transferred incident to a sale of service by an entity licensed under the Assisted Living and Shared Housing Act or an entity that holds a permit issued pursuant to the Life Care Facilities Act. (Section 3-10 of the Act)
C) Beginning on July 1, 2000 through December 31, 2000, with respect to motor fuel and gasohol, the tax is imposed at the rate of 1.25% (Section 3-10 of the Act). (See the provisions of 86 Ill. Adm. Code 130.101, which is incorporated by reference as if fully set forth in this subsection (b)).
D) Beginning on July 1, 2022 and until July 1, 2023, the tax shall be imposed at the rate of 0% on food prepared for immediate consumption and transferred incident to a sale of service subject to the SOTA or the Service Use Tax Act (SUTA) by an entity licensed under the Hospital Licensing Act, the Nursing Home Care Act, the Assisted Living and Shared Housing Act, the ID/DD Community Care Act, the MC/DD Act, the Specialized Mental Health Rehabilitation Act of 2013, or the Child Care Act of 1969, or an entity that holds a permit issued pursuant to the Life Care Facilities Act. Beginning July 1, 2022 and until July 1, 2023, the tax shall also be imposed at the rate of 0% on food for human consumption that is to be consumed off the premises where it is sold (other than alcoholic beverages, food consisting of or infused with adult use cannabis, soft drinks, candy, and food that has been prepared for immediate consumption and is not otherwise included in this paragraph). (Section 3-10 of the Act)
2) On and after January 1, 2001, prepaid telephone calling arrangements shall be considered tangible personal property subject to the tax imposed under the Act regardless of the form in which those arrangements may be embodied, transmitted, or fixed by any method now known or hereafter developed. (Section 3 of the Act) "Prepaid telephone calling arrangements" means the right to exclusively purchase telephone or telecommunications services that must be paid for in advance and enable the origination of one or more intrastate, interstate, or international telephone calls or other telecommunications using an access number, an authorization code, or both, whether manually or electronically dialed, for which payment to a retailer must be made in advance, provided that, unless recharged, no further service is provided once that prepaid amount of service has been consumed. Prepaid telephone calling arrangements include the recharge of a prepaid calling arrangement. For purposes of this Section, "recharge" means the purchase of additional prepaid telephone or telecommunications services whether or not the purchaser acquires a different access number or authorization code. For purposes of this Section, "telecommunications" means that term as defined in Section 2 of the Telecommunications Excise Tax Act [35 ILCS 630]. "Prepaid telephone calling arrangements" does not include an arrangement whereby the service provider reflects the amount of the purchase as a credit on an account for a customer under an existing subscription plan. (Section 3-27 of the Act)
c) The date of the sale of service is deemed to be the date of the delivery, to the user, of the tangible personal property that the serviceman transfers as an incident to a sale of service.
d) When a serviceman contracts to design, develop and produce special order machinery or equipment, the tax imposed under the Service Occupation Tax shall be based on the serviceman's cost price of the tangible personal property transferred incident to completion of the contracts regardless of that serviceman's annual threshold. (Section 3-10 of the Act)
e) For the purpose of determining the tax base, selling price shall in no event be less than the cost price to the serviceman of the tangible personal property transferred. The selling price of each item of tangible personal property transferred incident to a sale of service may be stated as a distinct item by the serviceman to the service customer and the tax imposed by the Act shall when collected be stated as a distinct item separate and apart from the selling price of the tangible personal property. If the selling price of each item of tangible personal property transferred incident to a sale of service is not stated as a separate item on the serviceman's billing to the service customer, then the tax imposed by the Act shall be based on 50% of the serviceman's entire billing to the service customer (Section 3-10 of the Act), but in no event shall this amount be less than the cost price to the serviceman of the tangible personal property so transferred.
f) Taxpayers who are registered may purchase all tangible personal property for retransfer by providing their suppliers with valid resale certificates even if in some transactions the cost price of the tangible personal property will be less than 35% of the total gross receipts from the transaction. If the serviceman paid tax to the serviceman's supplier in the expectation that the cost of parts would be less than 35% of the total transaction selling price, but the actual percentage was more than 35%, the serviceman would be able to take credit for the tax paid to the supplier but would be liable for tax on the selling price of the parts, if stated, or on 50% of the total transaction selling price. In the case of servicemen transferring prescription drugs or servicemen engaged in graphic arts production, replace the references to 35% in this subsection with 75%. The serviceman may also be liable for penalties due to a failure to file returns.
(Source: Amended at 48 Ill. Reg. 14809, effective September 25, 2024)
