An Illinois sales tax exemption removes a transaction from the sales tax obligation. The seller doesn't collect tax and doesn't owe the state on that sale.

Some exemptions depend on who's buying, such as a government agency or qualifying non-profit. Others depend on what's being sold, such as manufacturing equipment or groceries for home use. One transaction can sometimes qualify under both.

Below, we'll cover how Illinois defines and applies these exemptions, which customers and products qualify, and how long a business must keep those records once the sale is done.

Key takeaways

• Illinois exemptions fall into two categories: entity-based (tied to who's buying) and product-based (tied to what's being sold).

• Sellers need a valid exemption certificate on file for each exempt sale. The specific form depends on the type of customer or purchase.

• Businesses should keep exemption certificates and related records for at least three and a half years to match the state's audit statute of limitations.

What is an Illinois sales tax exemption?

An Illinois sales tax exemption removes the state's 6.25% sales tax, officially called the retailers' occupation tax (ROT). ROT is structured as a tax on the seller's privilege of doing business in the state, not on the customer, but it works the same way a sales tax would. An exemption makes a transaction ineligible for that tax.

Who qualifies for an Illinois sales tax exemption?

Qualification in Illinois depends on the customer's legal status and, in some cases, what they plan to do with the purchase.

A handful of categories cover most exempt customers:

• Governments: Federal, state, and local government agencies don't pay sales tax on purchases. This covers school districts, municipal offices, and state universities.

• Exempt organisations: Illinois issues an exemption identification number, called an E-number, to qualifying charitable, religious, and educational organisations. To get one, organisations apply to the Illinois Department of Revenue. They must show they meet the statutory definition, which is narrower than holding federal 501(c)(3) status.

• Resellers: A business buying goods it plans to resell rather than use or consume doesn't pay tax on that purchase. The tax gets collected from the end customer.

• Manufacturers: Businesses buying machinery and equipment used primarily for manufacturing or assembling goods for sale can claim a production-related exemption that's separate from the general resale exemption.

• Farmers: Purchases of farm machinery and equipment used primarily in production agriculture have their own exemption category. They're distinct from the manufacturing exemption even though the logic behind them is similar.

What products and services qualify for a sales tax exemption in Illinois?

Some exemptions attach to the product rather than the customer, so the tax treatment stays the same no matter who's making the purchase.

Qualifying food, drugs, and medical appliances get taxed at a reduced 1% rate instead of the standard 6.25%. This covers groceries for home consumption, prescription and non-prescription medications, and medical devices such as hearing aids. Prepared food sold for immediate consumption, such as a restaurant meal, gets taxed in full.

Some categories carry a full exemption:

• Newspapers and magazines: Publications sold on a subscription basis

• Manufacturing machinery and equipment: Machinery, equipment, and related parts used primarily in manufacturing or assembling goods for sale

• Graphic arts machinery and equipment: Equipment used in printing and publishing (this category narrowed because the state folded parts of it into the broader manufacturing exemption)

• Legal tender, currency, and bullion: Purchases made as investment rather than for use

• Rolling stock: Vehicles and equipment used to transport people or property for hire in interstate commerce, once the customer meets the interstate usage threshold

Services typically sit outside Illinois's sales tax base because ROT applies to tangible personal property rather than labour or expertise.

How does a business use a sales tax exemption certificate in Illinois?

When a customer claims an exemption, the seller needs a certificate on file to support it. Illinois doesn't require certificates to be filed with the state at the time of sale, but a seller must be able to produce them if the Department of Revenue asks.

Customers making resale purchases must complete and provide a certificate of resale, Form CRT-61, with their registration number and a description of what's being bought for resale. A seller who accepts a complete Form CRT-61 in good faith is usually protected if it turns out the customer misused the exemption.

Exempt organisations must present their E-number. The seller records it and the organisation's name on the invoice or another supporting document. Government customers typically present a purchase order or exemption letter because the exemption follows from their status rather than a specific form.

Customers making manufacturing and farm machinery purchases use Form ST-587, the exemption certificate for manufacturing, production agriculture, and coal and aggregate mining machinery and equipment. This form requires more detail than a resale certificate because the exemption depends on how the equipment gets used.

Out-of-state customers claiming a resale exemption in multiple states can use the Uniform Sales and Use Tax Resale Certificate, a multijurisdiction form that Illinois accepts alongside many other states.

What records does a business need to keep for an Illinois sales tax exemption?

Illinois can typically audit a return for up to three and a half years after it's filed. That timeline sets the floor for how long a business should keep exemption certificates and the records tied to them. The certificate (the CRT-61, ST-587, E-number documentation, or multijurisdiction form) must be filled out completely. The invoice or receipt should tie to the exempt sale, with the date, item description, and customer information that matches what's on the certificate. Sellers should retain any correspondence with the Illinois Department of Revenue regarding E-number validity because these can lapse or change.

A seller who accepts a sales tax exemption certificate that's incomplete or that doesn't reasonably match the transaction risks losing the good-faith protection and getting assessed for the tax along with penalties and interest.

Which tools help manage Illinois sales tax exemption certificates?

Manually tracking exemption certificates across a large customer base can become unwieldy. Businesses need a way to collect certificates once, flag which customers carry a valid exemption, and apply the right tax treatment automatically at checkout.

An automated tool such as Stripe Tax makes this simple. Stripe Tax lets a business register customers as tax-exempt and store their exemption information in Stripe, so future purchases from that customer apply the exempt status automatically instead of requiring a manual check at every sale. When a business sells taxable and exempt goods, such as manufacturing equipment alongside general merchandise, Stripe Tax codes items correctly under Illinois law based on the product, regardless of which customer is buying it.

How Stripe Tax can help

Stripe Tax reduces the complexity of tax compliance so you can focus on growing your business. Start collecting taxes globally by adding a single line of code to your existing integration, clicking a button in the Dashboard, or using our powerful application programming interface (API).

Stripe Tax helps you monitor your obligations and alerts you when you exceed a tax registration threshold based on your Stripe transactions. It can also register to collect tax on your behalf in the US, automate US filings in the Dashboard, and manage global filings through trusted partners. Stripe Tax automatically calculates and collects sales tax, value-added tax (VAT), and goods and services tax (GST) on:

• Digital goods and services in all US states and over 100 countries
  
• Physical goods in all US states and 42 countries
  

Stripe Tax can help you:

• Understand where to register and collect taxes: See where you need to collect taxes based on your Stripe transactions. After you register, switch on tax collection in a new state or country in seconds. You can start collecting taxes by adding one line of code to your existing Stripe integration, or add tax collection with the click of a button in the Stripe Dashboard.

• Register to pay tax: If you need to register for sales tax in the US, let Stripe manage your tax registrations. You'll benefit from a simplified process that prefills application details – saving you time and simplifying compliance with local regulations. If you need help registering outside of the US, Stripe partners with Taxually to help you register with local tax authorities.

• Automatically collect tax: Stripe Tax calculates and collects the right amount of tax owed, no matter what or where you sell. It supports hundreds of products and services and is up-to-date on tax rules and rate changes.

• Simplify filing: Stripe Tax automates US filings in the Dashboard, powered by TaxJar. For global filings, Stripe Tax seamlessly integrates with filing partners, so your global filings are accurate and timely. Let our partners manage your filings so you can focus on growing your business.

Learn more about Stripe Tax or get started today.

FAQs about Illinois sales tax exemptions