An Illinois sales tax exemption certificate is one of three documents, depending on why the purchase is exempt: Form CRT-61 (Certificate of Resale) for goods bought to resell, Form ST-587 (Equipment Exemption Certificate) for qualifying manufacturing, graphic arts, farm, and mining equipment, and an Exemption Identification Number (E-number) issued by the Illinois Department of Revenue for charitable, religious, educational, and governmental organizations. The buyer has to present the right document at the time of purchase. If it is missing, wrong, or incomplete, the seller collects tax, and unwinding that later is harder than getting it right up front.
Which Form Matches Which Exemption
Illinois does not use a single universal exemption certificate, and grabbing the wrong one is a common mistake. The match is straightforward once you know the reason for the exemption:
- Buying tangible personal property to resell: Form CRT-61. Requires the buyer’s Illinois registration or resale number.
- Buying manufacturing equipment, graphic arts equipment, production agriculture machinery, or coal and aggregate mining equipment: Form ST-587.1Illinois Department of Revenue. ST-587 Exemption Certificate
- Buying as a qualifying charitable, religious, educational, or governmental organization: give the merchant your E-number.2Illinois Department of Revenue. Sales and Property Tax Exemptions
Using the wrong form is not only a paperwork problem. If a seller’s records show the wrong certificate type during an audit, the Department of Revenue can treat the sale as taxable and assess the seller for the uncollected tax.
CRT-61 for Resale Purchases
Retailers and wholesalers buying goods to resell use Form CRT-61. Illinois sales tax is designed as a consumption tax paid by the end user, so goods moving through the supply chain should not be taxed at each step.3Legal Information Institute. Illinois Administrative Code tit. 86, 130.210 – Sales of Tangible Personal Property to Purchasers for Resale The exemption covers items bought for resale as tangible personal property, provided the buyer does not use the item before reselling it. Raw materials that become part of a finished product qualify, as do goods held on shelves for retail sale.
The buyer must enter a valid Illinois retailer or reseller account ID number on the CRT-61. Sellers are responsible for confirming that number is active, and the Department maintains a “Verify a Registered Business” tool at mytax.illinois.gov for that purpose.4Illinois Department of Revenue. CRT-61 Certificate of Resale
ST-587 for Equipment Purchases
Form ST-587 covers several equipment exemptions that share a common test: the equipment must be used primarily for a qualifying purpose, meaning more than 50% of the time.5Illinois Department of Revenue. How Do I Properly Document an Exempt Sale or Purchase of Machinery and Equipment? The burden of proving that threshold falls on the buyer.
For manufacturing, the exemption covers machinery and equipment used primarily to manufacture or assemble tangible personal property for sale or lease.6Legal Information Institute. Illinois Administrative Code tit. 86, 130.330 – Manufacturing Machinery and Equipment Both new and replacement equipment qualify, and so does machinery for expanded or new operations. Graphic arts equipment used in commercial printing and publishing falls under the same provision.
For farms, the exemption covers machinery and equipment used primarily in production agriculture or in state or federal agricultural programs, including individual replacement parts.7Illinois General Assembly. Illinois Administrative Code 86 Part 130.305 – Farm Machinery and Equipment Buyers who split use between farm and non-farm work should keep a log of machine hours for each. If equipment initially qualifies but gets converted to non-farm use before at least half its useful life has passed, tax becomes due on the original purchase price.
Fill out the ST-587 with the buyer’s business name and address, and certify that the property will be used primarily for the qualifying purpose. Vague descriptions like “business purposes” are not enough. The description of intended use should be specific enough to support the exemption if an auditor reads it years later.
E-Number for Exempt Organizations
Illinois recognizes four broad categories of organizations that can buy tax-free: governmental bodies, religious organizations, educational institutions, and exclusively charitable organizations.8Illinois Department of Revenue. Do Certain Organizations Qualify for a Retailers’ Occupation and Use Tax Exemption on Their Purchases Made at Retail? The exemption is not automatic. Each organization must apply to the Department and receive an active E-number before making any tax-free purchases.9Legal Information Institute. Illinois Administrative Code tit. 86, 130.2007 – Exemption Identification Numbers Once issued, the E-number is what you hand to the merchant at checkout. There is no separate paper certificate to fill out for each transaction the way there is for CRT-61 or ST-587.
Applying for an E-Number
Organizations apply using Form STAX-1, submitted to the Department’s Exemption Section in Springfield.10Illinois Department of Revenue. STAX-1, Application for Sales Tax Exemption Charitable, religious, and educational applicants need to include:
- Articles of Incorporation (or a constitution for unincorporated groups) and by-laws.
- A detailed narrative of the organization’s functions, activities, and the population it serves.
- The IRS determination letter granting federal tax-exempt status, if applicable.
- The most recent full-year audited financial statement showing income and expenses. Religious organizations are excused from this on the initial application.
- Brochures or printed materials describing the organization’s work.
Governmental organizations have a simpler path and do not need the same documentation as charities or schools.11Illinois Department of Revenue. How Does a Qualified Organization Apply for a Tax-Exempt (E) Number? Processing takes up to 90 days, and the exemption is not retroactive. Purchases made before the E-number is issued are fully taxable.2Illinois Department of Revenue. Sales and Property Tax Exemptions
Renewing an E-Number
E-numbers expire and have to be renewed. To renew, resubmit Form STAX-1 with the same supporting documentation: current exemption letter, governing documents, purpose narrative, IRS letter, and financial statement.12Illinois Department of Revenue. How Do I Reinstate or Renew My Tax-Exempt (E) Number? Flag any change in address or name on a cover letter. Once an E-number lapses, the organization cannot make tax-free purchases until it is reinstated.
Blanket Certificates for Recurring Purchases
If you buy from the same supplier repeatedly, you do not need a fresh CRT-61 for every transaction. Illinois allows blanket certificates of resale when either all of a buyer’s purchases from that supplier are for resale or a specified percentage are.13Illinois Department of Revenue. When Is a Blanket Certificate Used? The document is still Form CRT-61.
Blanket certificates are not permanent. If the percentage of purchases for resale changes, a new certificate is required, and in any case all blanket certificates should be updated at least every three years.14Illinois Department of Revenue. Certificate of Resale Sellers who rely on stale certificates carry the liability if the buyer’s circumstances have changed.
Contractors Buying for Exempt Organizations
Construction contractors buying building materials to incorporate into property owned by a tax-exempt organization can claim the exemption on those materials. The supplier must keep a certification from the contractor stating that the materials will be incorporated into real estate under a contract with a named exempt organization. That certification has to identify the church, charity, school, or government body by name and address, include the date the contract was entered, and list the organization’s active E-number.15Legal Information Institute. Illinois Administrative Code tit. 86, 130.2075 – Sales to Construction Contractors Alert the supplier before placing orders. Without that certification on file, tax will be charged.
Out-of-State Buyers
Illinois accepts the Multistate Tax Commission Uniform Sales and Use Tax Certificate for resale purchases, but with restrictions. The buyer must provide a valid Illinois registration or resale number on the certificate. No other state’s number will work.16Illinois General Assembly. Illinois Administrative Code 86 Part 130.1405 – Sellers Responsibility to Obtain Certificates of Resale Illinois also does not recognize an exemption for property purchased for subsequent lease or rental through the multistate form.
A buyer without an Illinois registration or resale number creates a legal presumption that the sale is not for resale. That presumption can be rebutted with other evidence, but relying on after-the-fact documentation is risky. The cleaner path is to register with Illinois before placing orders. Illinois is not a member of the Streamlined Sales and Use Tax Agreement, so the SST Certificate of Exemption does not apply here.
What Sellers Must Verify and Keep
Illinois holds sellers to a stricter standard than many states. “Good faith” is not the standard for accepting a resale certificate. The seller must confirm that the buyer has a valid registration or resale number at the time of purchase, and if a buyer fails to provide a certificate at the time of sale, the seller must charge tax.16Illinois General Assembly. Illinois Administrative Code 86 Part 130.1405 – Sellers Responsibility to Obtain Certificates of Resale For E-number purchases, sellers can verify active exemption status through the Department’s online tools.
Sellers must retain exemption certificates and supporting transaction records for at least three and a half years after filing the relevant return. Records must be written in English, kept in Illinois unless the Department grants written permission otherwise, and available for inspection during normal business hours.17Illinois Department of Revenue. What Must I Keep in My Books and Records? Buyers should keep their own copies of every certificate they hand over, along with the matching invoices. If the Department audits the seller and questions a transaction, the seller will come looking for the buyer to confirm the exempt purpose.
If a resale certificate is later invalidated, the seller owes the uncollected tax plus interest. For resale certificates where the seller accepted a valid certificate and verified the registration number, the liability shifts to the buyer if the buyer actually used the goods instead of reselling them.7Illinois General Assembly. Illinois Administrative Code 86 Part 130.305 – Farm Machinery and Equipment
Penalties for Misuse
The Department imposes a penalty of 50% of the tax deficiency attributable to fraud, with interest accruing from the date the tax was originally due.18Illinois Department of Revenue. Pub-103, Penalties and Interest for Illinois Taxes
Criminal penalties scale with the amount involved. Evading less than $500 in tax is a Class 4 felony. Evasion of $500 or more but under $10,000 is a Class 3 felony, and filing a fraudulent return carries the same classifications.19Illinois General Assembly. Illinois Compiled Statutes 35 ILCS 120/13 These are not reserved for large-scale schemes. A business owner who routinely uses a resale certificate for personal purchases is committing exactly the kind of evasion the statute targets.
Even unintentional misuse carries exposure. If an audit shows that equipment claimed as exempt on Form ST-587 was not actually used primarily for manufacturing or agriculture, the buyer owes tax on the original purchase price plus interest. Honest certifications and detailed usage logs cost less than defending an audit finding later.