Why Illinois' First Sales Tax Holiday Since 2022 Creates a Configuration Problem Most Retailers Have Not Solved
Illinois last ran a back-to-school sales tax holiday in 2022. For the four years between then and now, retailers selling clothing and school supplies in Illinois applied the standard combined state and local rate to every transaction. On June 16, 2026, Governor Pritzker signed Public Act 104-0468 as part of the FY27 budget package, reinstating the holiday with 52 days' notice before its August 7 start date.
That 52-day window is the compliance problem. A retailer that built its Illinois tax configuration once and has not revisited it since 2022 has a system calibrated for a world where no holiday exists. Reactivating the holiday requires more than turning on a switch. Illinois's holiday is not a zero-rate event. It is a reduced-rate event: the state's 6.25% portion drops to 1.25%, but every local tax imposed on top of the state rate remains in full effect. In Chicago, where the combined state and local rate is 10.25%, a qualifying item during the holiday is taxed at 5.25%, not zero. A billing system configured to apply zero tax to qualifying items is as wrong as one that applies full tax. The correct outcome is full local rate minus 5 percentage points of state reduction, calculated at the specific combined rate applicable to each customer's location.
The Illinois Department of Revenue published Informational Bulletin FY 2026-30 to govern retailer obligations during the holiday. Illinois also requires qualifying sales to be reported on a new form, Schedule K-12, filed alongside the standard Form ST-1. There is no equivalent form in any other state's holiday compliance, and retailers who do not know Schedule K-12 exists will file an incomplete August return.
What Exactly Does the Illinois Holiday Cover and What Does It Exclude?
The holiday covers two categories with different rules attached. Clothing and footwear must be priced at less than $125 per item at retail selling price. School supplies must be used by students in the course of study but carry no dollar cap. Within each category, the IDOR's FY 2026-30 bulletin provides explicit qualifying and nonqualifying item lists.
Illinois 2026 Sales Tax Holiday: Qualifying vs. Excluded Items
| Qualifying Clothing and Footwear (under $125) |
Qualifying School Supplies (No Price Cap) |
Excluded Items (Fully Taxable at All Times) |
| Shirts, blouses, pants, shorts, skirts, dresses |
Pens, pencils, pencil lead and ink refills |
Clothing at $125 or more per item |
| Coats, jackets, rainwear, lab coats |
Notebooks, loose leaf and copy paper, legal pads |
Briefcases, handbags, wallets, jewelry, watches |
| Underwear, hosiery, pantyhose, socks, footlets |
Binders, expandable, plastic and manila folders |
Cosmetics, hair notions, umbrellas, wigs |
| School uniforms, belts, suspenders, scarves |
Bookbags, lunch boxes, pencil boxes |
Sports gloves (baseball, boxing, golf, hockey) |
| Bathing suits and caps, gloves and mittens |
Calculators, rulers, protractors, compasses |
Goggles, mouth guards, shoulder pads, wetsuits |
| Hats, caps, ear muffs, neckties |
Erasers, scissors, tape, chalk, glue, paste |
Hard hats, helmets, safety glasses, face shields |
| Shoes, sneakers, sandals, slippers, boots |
Crayons, colored pencils, markers, highlighters |
Ballet, tap, and cleated athletic shoes; skates |
| Overshoes, steel-toed shoes, insoles |
Index cards, composition books, poster board |
Computers, flash drives, printers, printer ink |
| Rubber pants for cloth diapers |
Pencil sharpeners, scissors |
Cameras, cell phones, PDAs, video cameras |
| Athletic supporters, household and shop aprons |
Scissors |
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Art supplies: paints, brushes, clay, sketch pads |
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Textbooks, reference books, maps, globes |
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Three exclusions deserve specific attention for retailers who may assume they qualify. Computers and computer supplies are explicitly excluded, including printers, printer cartridges, flash drives, external drives, and computer cables. Unlike Massachusetts or Missouri, Illinois does not extend its holiday to computers. Art supplies including acrylic, tempera, and oil paints, paintbrushes, sketch pads, clay, and watercolors are excluded even though general school supplies qualify. And athletic footwear designed for specific activities, including cleated shoes, ballet shoes, tap shoes, roller skates, ice skates, ski boots, waders, and fins, is excluded even though general footwear under $125 qualifies.
How Does the Rate Reduction Work When Local Taxes Are Still in Effect?
Illinois's sales tax holiday is often misunderstood because it is not a tax-free event. Only the state portion of the sales tax is reduced, dropping from 6.25% to 1.25% on qualifying purchases. Every county, city, transit, and special district tax remains fully in effect.
That means there is no single holiday tax rate across Illinois. The correct rate depends on the combined state and local rate that applies at the customer's location.
For example, if the normal combined sales tax rate is 10.25%, qualifying purchases during the holiday are taxed at 5.25%. In locations where the combined rate is 6.50%, the holiday rate becomes 1.50%. Jurisdictions with no local taxes apply the minimum 1.25% rate.
Rather than applying a flat statewide percentage, retailers should calculate the reduced rate using the combined rate applicable to each transaction. This is especially important for businesses operating across multiple store locations or selling throughout Illinois.
The same principle applies to remote sellers with Illinois sales tax obligations. Holiday tax should be calculated using the customer's delivery address, since local rates vary by jurisdiction. A shipment to Chicago may require a different holiday rate than one delivered elsewhere in the state, making accurate address-level tax calculation essential.
What Special Transaction Rules Should Retailers Know?
Beyond qualifying products and reduced rates, Illinois also applies specific rules to common retail scenarios. These situations can easily result in incorrect tax collection if they are not handled properly.
Special Transactions During Illinois's 2026 Sales Tax Holiday
| Transaction Type |
IDOR Rule |
| Coupons and discounts |
Price is determined after unreimbursed coupons and store markdowns but before reimbursed coupons. A $130 shirt with a $10 store coupon has a qualifying price of $120 and is exempt. A $130 shirt with a $10 manufacturer coupon remains at $130 and is excluded. |
| Bundled sales |
Qualifying items bundled with nonqualifying items get the reduced rate only if the value of qualifying items exceeds the value of nonqualifying items in the bundle. Bundled clothing or footwear sales are capped at $125 for the entire bundle. |
| Splitting items |
Items normally sold as a single unit cannot be split to bring the unit price below $125. A $140 pair of shoes cannot be sold as two individual shoes at $70 each to qualify. |
| Rain checks |
Qualifying items purchased during the holiday with a rain check issued before the holiday qualify. Qualifying items purchased after the holiday using a rain check issued during the holiday do not qualify. |
| Back orders / pre-paid online orders |
If a customer pays in full during the holiday period, the reduced rate applies regardless of when the item is delivered. |
| Exchanges after the holiday |
No additional tax is due if a customer exchanges a qualifying holiday item for a different size, color, or feature at the same or lower price after the holiday ends. |
| Returns within 60 days post-holiday |
For the 60-day period after August 16, retailers must refund or credit only the reduced 1.25% rate unless the customer provides a receipt showing the full rate was paid, or the retailer has documentation confirming full-rate payment. |
How Do Retailers Report Holiday Sales Using Schedule K-12?
One of the biggest changes in the 2026 holiday is the introduction of Schedule K-12, a reporting schedule that accompanies the standard Form ST-1 and, where applicable, Form ST-2. Retailers making qualifying holiday sales must include this schedule when filing their August return.
Rather than excluding qualifying sales from the return, retailers continue reporting taxable sales through the normal ST-1 process. Schedule K-12 is then used to calculate the credit for the reduced state tax that was not collected during the holiday. This approach preserves accurate sales reporting while ensuring the reduced state portion is reflected correctly.
Retailers who do not file Schedule K-12 are over-reporting their tax liability. Those who file it correctly receive the credit that reflects the state portion they were not permitted to collect during the holiday. Likewise, businesses that collected tax in error at the full rate during the holiday must remit that tax and file Form ST-1-X, Amended Sales and Use Tax Return, along with Schedule K-12, to claim the credit for amounts subsequently refunded to customers.
What Does Correct Configuration Look Like Before August 7?
A successful Illinois sales tax holiday setup comes down to three configuration checks.
Apply the correct holiday rate. Tax logic should reduce only the state portion of the combined sales tax rate while leaving local taxes unchanged. Because local rates vary across Illinois, the correct holiday rate must be calculated for every transaction based on the customer's location.
Map products at the SKU level. Product eligibility is more nuanced than broad merchandise categories. Clothing generally qualifies, but specialized athletic footwear does not. School supplies qualify, while computers and art supplies remain taxable. Accurate SKU-level mapping is the most reliable way to avoid incorrect tax treatment.
Prepare your filing workflow. Businesses making qualifying holiday sales should ensure Schedule K-12 is incorporated into their August filing process so the reduced state tax is reported correctly and the appropriate credit is claimed.
Is your Illinois tax rate configuration ready for August 7? Illinois's holiday is not a zero-rate event. Every transaction involving a qualifying item needs the state portion reduced by exactly 5 percentage points, with local taxes left intact. That is a configuration that most billing systems require an explicit update to handle correctly. CereTax applies the reduced rate at the transaction level, handles the Schedule K-12 reporting, and keeps the local tax layer untouched throughout the ten-day window.
👉🏻 Book a Strategy Call with CereTax to see how CereTax automatically applies the correct reduced rate, keeps local taxes intact, and simplifies holiday reporting.
