Section 144.049, RSMo, establishes a sales tax holiday in Missouri effective during a three-day period beginning at 12:01 a.m. on the first Friday in August and ending at midnight on the Sunday following. Certain back-to-school purchases, such as clothing, school supplies, computers, and other items as defined by the statute, are exempt from sales tax for this time period only.
The sales tax holiday applies to state and local sales taxes when a local jurisdiction chooses to participate in the holiday. However, local jurisdictions can choose to not participate in the holiday if they enact an ordinance to not participate and notify the department 45 days prior to the sales tax holiday. If the jurisdiction had previously enacted an ordinance to not participate in the holiday and later decided to participate, it must enact a new ordinance to participate and notify the department 45 days prior to the sales tax holiday.
If one or all of your local taxing jurisdictions are not participating in the sales tax holiday, the state's portion of the tax rate (4.225%) will remain exempt for the sale of qualifying sales tax holiday items.
Section 144.049, RSMo, defines items exempt during the sales tax holiday as:
“Clothing” - any article of wearing apparel intended to be worn on or about the human body including, but not limited to, disposable diapers for infants or adults and footwear. The term shall include but not be limited to, cloth and other material used to make school uniforms or other school clothing. Items normally sold in pairs shall not be separated to qualify for the exemption. The term shall not include watches, watchbands, jewelry, handbags, handkerchiefs, umbrellas, scarves, ties, headbands, or belt buckles; and
“Personal computers” - a laptop, desktop, or tower computer system which consists of a central processing unit, random access memory, a storage drive, a display monitor, a keyboard, and devices designed for use in conjunction with a personal computer, such as a disk drive, memory module, compact disk drive, daughterboard, digitalizer, microphone, modem, motherboard, mouse, multimedia speaker, printer, scanner, single-user hardware, single-user operating system, soundcard, or video card; and
“School supplies” - any item normally used by students in a standard classroom for educational purposes, including but not limited to, textbooks, notebooks, paper, writing instruments, crayons, art supplies, rulers, book bags, backpacks, handheld calculators, graphing calculators, chalk, maps, and globes. The term shall not include watches, radios, CD players, headphones, sporting equipment, portable or desktop telephones, copiers or other office equipment, furniture, or fixtures. School supplies shall also include graphing calculators valued at $150 or less and computer software having a taxable value of $350 or less.
For a list of 2021 state sales tax holidays, visit: https://www.taxadmin.org/2021-sales-tax-holiday