Missouri sales and use tax guide

Sales tax is a tax paid to a governing body (state or local) on the sale of certain goods and services. Missouri first adopted a general state sales tax in 1934, and since that time, the rate has risen to 4.225%. On top of the state sales tax, there may be one or more local sales taxes, as well as one or more special district taxes, each of which can range between 0% and 5.875%. Currently, combined sales tax rates in Missouri range from 4.225% to 10.1%, depending on the location of the sale.

As a business owner selling taxable goods or services, you act as an agent of the state of Missouri by collecting tax from purchasers and passing it along to the appropriate tax authority. Sales and use tax in Missouri is administered by the Missouri Department of Revenue (DOR).

Any sales tax collected from customers belongs to the state of Missouri, not you. It’s your responsibility to manage the taxes you collect to remain in compliance with state and local laws. Failure to do so can lead to penalties and interest charges.

When you need to collect Missouri sales tax

In Missouri, sales tax is levied on the sale of tangible goods and some services. The tax is collected by the seller and remitted to state tax authorities. The seller acts as a de facto collector.

To help you determine whether you need to collect sales tax in Missouri, start by answering these three questions:

1. Do you have nexus in Missouri?
2. Are you selling taxable goods or services to Missouri residents?
3. Are your buyers required to pay sales tax?

If the answer to all three questions is yes, you’re required to register with the state tax authority, collect the correct amount of sales tax per sale, file returns, and remit to the state.

Failure to collect Missouri sales tax

If you meet the criteria for collecting sales tax and choose not to, you’ll be held responsible for the tax due, plus applicable penalties and interest.

It’s extremely important to set up tax collection at the point of sale — it’s near impossible to collect sales tax from customers after a transaction is complete.

The need to collect sales tax in Missouri is predicated on having a significant connection with the state. This is a concept known as nexus. Nexus is a Latin word that means “to bind or tie,” and it’s the deciding factor for whether the state has the legal authority to require your business to collect, file, and remit sales tax.

Nexus triggers

Sales tax nexus in all states used to be limited to physical presence: A state could require a business to register and collect and remit sales tax only if it had a physical presence in the state, such as employees or an office, retail store, or warehouse.

In June 2018, the Supreme Court of the United States overruled the physical presence rule with its decision in South Dakota v. Wayfair, Inc. States are now free to tax businesses based on their economic and virtual connections to the state, or economic nexus.

While physical presence still triggers a sales tax collection obligation in Missouri, out-of-state sellers may also establish nexus through economic activity in the state. A business is considered to have economic nexus in Missouri if it exceeds $100,000 in annual gross sales into the state.

Out-of-state sellers

Out-of-state sellers with no physical presence in a state may establish sales tax nexus through economic activity in Missouri. If a remote seller exceeds $100,000 in annual gross sales into Missouri, they are required to register with the Missouri Department of Revenue and collect and remit sales tax.

Missouri also requires marketplace facilitators, such as Amazon, to collect and remit sales tax on behalf of third-party sellers for transactions made through their platforms. However, sellers may still have registration or reporting obligations if they have nexus in the state. If you have sales tax nexus in Missouri, you’re required to register with the Missouri DOR and to charge, collect, and remit the appropriate tax to the state.

For more information, see Missouri Department of Revenue - Remote Seller and Marketplace Facilitator FAQs webpage.

Trailing nexus

Sales tax nexus can linger even after a retailer ceases the activities that caused it to be “engaged in business” in the state. This is known as trailing nexus. Missouri does not have an explicitly defined trailing nexus policy, but businesses should evaluate their ongoing filing obligations based on prior activity in the state.

Fulfillment by Amazon (FBA)

If you’re an active Amazon seller and you use Fulfillment by Amazon (FBA), you need to know where your inventory is stored and if its presence in a state will trigger nexus. FBA sellers can also download an Inventory Event Detail Report from Amazon Seller Central to identify inventory stored in Missouri.

If you sell taxable goods to Missouri residents and have inventory stored in the state, you likely have nexus and an obligation to collect and remit tax. To begin to understand your unique nexus obligations, check out our free economic nexus tool or consult with a trusted tax advisor.

Sourcing sales tax in Missouri: which rate to collect

In some states, sales tax rates, rules, and regulations are based on the location of the seller and the origin of the sale (origin-based sourcing). In others, sales tax is based on the location of the buyer and the destination of the sale (destination-based sourcing).

Missouri uses a mixed sourcing approach. For in-state sellers, sales tax is generally origin-based, meaning you apply the rate based on the location of the seller. However, out-of-state sellers required to collect Missouri use tax must apply destination-based sourcing and collect the rate in effect at the location of the buyer.

After determining you have sales tax nexus in Missouri, you need to register with the proper state authority and collect, file, and remit sales tax to the state. We get a lot of questions about this and recognize it may be the most difficult hurdle for businesses to overcome. Avalara Licensing can help you obtain your Missouri business license and sales tax registration.

How to register for a Missouri seller’s permit

You can register for a Missouri seller’s permit online through the Missouri DOR. To apply, you’ll need to provide the Missouri DOR with certain information about your business, including but not limited to:

• Business name, address, and contact information
• Federal EIN number
• Date business activities began or will begin
• Projected monthly sales
• Projected monthly taxable sales
• Products to be sold

Cost of registering for a Missouri seller’s permit

There’s currently no cost to register for a Missouri sales tax license. However, the Missouri Department of Revenue may require certain businesses to post a bond. Bond requirements are determined on a case-by-case basis, typically based on factors such as filing history, compliance risk, or prior delinquencies.

Acquiring a registered business

You must register with the Missouri Department of Revenue if you acquire an existing business in Missouri. The state requires all registered businesses to have the current business owner’s name and contact information on file.

In some cases, the new owner may be held responsible for any unpaid sales taxes owed by the previous owner. To avoid this, buyers should request a tax clearance or “No Tax Due” certificate from the seller prior to completing the transaction.

Streamlined Sales Tax (SST)

The Streamlined Sales and Use Tax Agreement (SSUTA), or Streamlined Sales Tax (SST), is an effort by multiple states to simplify the administration and cost of sales and use tax for remote sellers. Remote sellers can register in multiple states at the same time through the Streamlined Sales Tax Registration System (SSTRS).

Missouri is not a member of the Streamlined Sales Tax Agreement.

Once you’ve successfully registered to collect Missouri sales tax, you’ll need to apply the correct rate to all taxable sales, remit sales tax, file timely returns with the Missouri Department of Revenue, and keep excellent records. Here’s what you need to know to keep everything organized and in check.

How you collect Missouri sales tax is influenced by how you sell your goods:

Brick-and-mortar store: Have a physical store? Brick-and-mortar point-of-sale solutions allow users to set the sales tax rate associated with the store location. New tax groups can then be created to allow for specific product tax rules.

Hosted store: Hosted store solutions like Shopify and Squarespace offer tools to help determine and collect sales tax. These platforms provide a dashboard environment where Missouri sales tax settings can be configured, but it’s the seller’s responsibility to ensure rates, rules, and product taxability are set up correctly.

Marketplace: Marketplaces like Amazon and Etsy are required to collect and remit Missouri sales tax on behalf of third-party sellers for transactions made through their platforms. While these platforms handle tax collection for marketplace sales, sellers may still have separate sales tax obligations depending on their nexus and business activities.

Mobile point of sale: Mobile POS systems like Square use business location settings and transaction details to determine the appropriate sales tax rate. While some systems may incorporate GPS data, sellers are responsible for ensuring the correct location and tax settings are applied. Specific tax rules can be configured within the system for different products.

Missouri sales tax collection can be automated to make your life much easier. Avalara AvaTax seamlessly integrates with the business systems you already use to deliver sales and use tax calculations in real time.

Tax-exempt goods

Some goods are exempt from sales tax under Missouri law. Examples include certain fuels, some medications, and medical equipment.

We recommend businesses review the Missouri Department of Revenue - Missouri Sales and Use Tax Exemptions and Exclusions From Tax webpage to stay up to date on which goods are taxable and which are exempt, and under what conditions.

Some customers are exempt from paying sales tax under Missouri law. Examples include government agencies, some nonprofit organizations, and merchants purchasing goods for resale.

Sellers are required to collect a valid exemption or resale certificate from buyers to validate each exempt transaction.

Misplacing a sales tax exemption/resale certificate

Missouri sales tax exemption and resale certificates are worth far more than the paper they’re written on. If you’re audited and cannot validate an exempt transaction, the Missouri Department of Revenue may hold you responsible for the uncollected sales tax. In some cases, late fees and interest will be applied and can result in large, unexpected bills.

Sales tax holidays

Sales tax holidays exempt specific products from sales and use tax for a limited period, usually a weekend or a week. These are recurring events established under Missouri law that allow qualifying purchases to be made without state or local sales tax during the exemption period.

Missouri currently offers two annual sales tax holidays:

• Show-Me Green Sales Tax Holiday — April 19–25, 2026 

  • During this week‑long exemption, qualifying ENERGY STAR certified new appliances are exempt from all state and local sales and use taxes. Only appliances that meet ENERGY STAR certification and are priced $1,500 or less per appliance qualify for the exemption.

• Back-to-School Sales Tax Holiday — August 7–9, 2026
  • This three‑day tax holiday begins at 12:01 a.m. on the first Friday in August and continues through midnight on the following Sunday. During this period, the following items are exempt from all state and local sales and use taxes when the price does not exceed the statutory limits:
    • Clothing priced $100 or less per item
    • School supplies priced $50 or less per item
    • Personal computers and computer peripheral devices priced $1,500 or less per item
    • Computer software priced $350 or less per item
    • Graphing calculators priced $150 or less per item

Missouri tax holidays apply to both state and local sales and use taxes on qualifying purchases.

You’re registered with the Missouri Department of Revenue and you’ve begun collecting sales tax. Remember, those tax dollars don’t belong to you. As an agent of the state of Missouri, your role is that of intermediary to transfer tax dollars from consumers to the tax authorities.

How to file

Once you’ve collected sales tax, you’re required to remit it to the Missouri Department of Revenue by a certain date. The Missouri Department of Revenue will then distribute it appropriately.

Filing a Missouri sales tax return is a two-step process comprised of submitting the required sales data (filing a return) and remitting the collected tax dollars (if any) to the Missouri DOR. The filing process forces you to detail your total sales in the state, the amount of sales tax collected, and the location of each sale.

Online filing is required for monthly and quarterly returns. Online filing is recommended for annual returns, but paper filing is acceptable.

Filing frequency

The Missouri Department of Revenue will assign you a filing frequency. Typically, this is determined by the size or sales volume of your business. State governments generally ask larger businesses to file more frequently. See the filing due dates section for more information.

Missouri sales tax returns and payments must be remitted at the same time; both have the same due date.

Online filing

You may file directly with the Missouri DOR by visiting their site and entering your transaction data manually. This is a free service, but preparing Missouri sales tax returns can be time-consuming — especially for larger sellers.

Using a third party to file returns

To save time and avoid costly errors, many businesses outsource their sales and use tax filing to an accountant, bookkeeper, or sales tax automation software like Avalara AvaTax. This is a normal business practice that can save business owners time and help them steer clear of costly mistakes due to inexperience and a lack of deep knowledge about the Missouri sales tax code.

Filing when there are no sales

Once you have a Missouri seller’s permit, you’re required to file returns at the completion of each assigned collection period regardless of whether any sales tax was collected. When no sales tax was collected, you must file a “zero return.”

Failure to submit a zero return can result in penalties and interest charges.

Closing a business

The Missouri DOR requires all businesses to “close their books” by filing a final sales tax return. This also holds true for business owners selling or otherwise transferring ownership of their business.

Timely filing discount

Many states historically offered timely filing discounts to encourage early or on‑time filing. Missouri currently offers a 2% discount on all sales tax returns filed and paid by the required due date. See the Missouri Department of Revenue – Sales Tax FAQs webpage for more details.

It’s important to know the due dates associated with the filing frequency assigned to your business by the Missouri Department of Revenue. This way you’ll be prepared and can plan accordingly. Failure to file by the assigned date can lead to late fines and interest charges.

Generally, the Missouri DOR requires monthly sales tax filing to be completed on or before the last day of the month following the tax period. Below, we’ve grouped Missouri sales tax filing due dates by filing frequency for your convenience. Due dates falling on a weekend or holiday are adjusted to the following business day.

Missouri requires sales and use tax to be prepaid on a monthly or quarter-monthly basis. See the Missouri Department of Revenue – Tax Calendar webpage for more details.

Filing a Missouri sales tax return late may result in a late filing penalty as well as interest on any outstanding tax due. For more information, refer to our section on penalties and interest.

In the event a Missouri sales tax filing deadline was missed due to circumstances beyond your control (e.g., weather, accident), the Missouri DOR may grant you an extension. However, you may be asked to provide evidence supporting your claim.

Hopefully you don’t need to worry about this section because you’re filing and remitting Missouri sales tax on time and without incident. However, in the real world, mistakes happen.

If you miss a sales tax filing deadline, follow the saying, “better late than never,” and file your return as soon as possible. Failure to file returns and remit collected tax on time may result in penalties and interest charges, and the longer you wait to file, the greater the penalty and the greater the interest.

If you’re in the process of acquiring a business, it’s strongly recommended that you contact the Missouri DOR and inquire about the current status of the potential acquisition. Once you’ve purchased the business, you’ll be held responsible for all outstanding Missouri sales and use tax liability.

If you’re collecting sales tax from Missouri residents, you’ll need to consider how to handle taxes on shipping and handling charges.

Taxable and exempt shipping charges

Missouri sales tax may apply to charges for shipping, handling, delivery, freight, and postage. Shipping charges for taxable goods are generally taxable in Missouri, if included in the sale price or when the purchaser is required to pay it. If the purchaser is not required to pay shipping and the charges are separately stated, they’re generally exempt.

There are exceptions to almost every rule with sales tax, and the same is true for shipping and handling charges. Specific questions on shipping in Missouri and sales tax should be taken directly to a tax professional familiar with Missouri tax laws.