MO
Missouri Small Business Tax Guide
What the Missouri Department of Revenue (DOR) says about the sales tax license, the state rate, return deadlines and income tax, quoted and dated as retrieved. General information, not tax advice.
Disclaimer: This page is educational content only. Tax laws change, and your situation may differ. It is not legal, tax, or financial advice. Consult a qualified professional licensed in Missouri before making filing or planning decisions.
Tax landscape for small businesses
The Missouri Department of Revenue (DOR) handles sales tax, corporate income tax and individual income tax. Every Missouri number below is a quote from a DOR page or form, dated as retrieved on October 31, 2026; none is estimated, and federal topics aren't covered.
The DOR's Sales/Use Tax page (Missouri, as retrieved on October 31, 2026) says: "The state’s sales tax is imposed on the purchase price of tangible personal property or taxable service sold at retail. Use tax is imposed on the storage, use or consumption of tangible personal property in this state." It adds: "The 4.225 percent state sales and use tax is distributed into four funds to finance portions of state government – General Revenue (3.0 percent), Conservation (0.125 percent), Education (1.0 percent), and Parks/Soils (0.10 percent)."
Worked example with invented figures, at the DOR's 4.225 percent state rate (Missouri, as retrieved on October 31, 2026): a furniture maker invoices a customer $1,000.00 for a handmade table. Tax at the state rate comes to $1,000.00 × 4.225% = $42.25, so the invoice totals $1,042.25 before any local tax. The same page says: "Cities and counties may impose a local sales and use tax."
Tax overview
Each row lists a tax area and its notes. Confirm current figures with your state's tax agency or the IRS.
| Tax type | Rate or basis | Notes |
|---|---|---|
| State sales and use tax (DOR) | "4.225 percent" | Missouri, as retrieved on October 31, 2026. The DOR lists four funds: General Revenue "(3.0 percent)", Conservation "(0.125 percent)", Education "(1.0 percent)" and Parks/Soils "(0.10 percent)". |
| Local sales and use tax (DOR) | Set by the city or county | Missouri, as retrieved on October 31, 2026: "Cities and counties may impose a local sales and use tax." |
| Corporate income tax (DOR) | "4 percent" | Missouri, as retrieved on October 31, 2026: "The tax rate is 4 percent for tax years beginning on or after January 1, 2020." |
| Individual income tax, tax year 2026 (DOR) | Top band: "$263 plus 4.7% of excess over $9,436" | Form MO-1040ES rate chart, tax year 2026 (revised 12-2025, as retrieved on October 31, 2026). The first taxed band is "2.0% of excess over $1,348". |
Filing requirements
This list isn't a complete checklist for your business.
Get a retail sales license before selling
The DOR's business tax registration FAQs (Missouri, as retrieved on October 31, 2026) say: "Taxpayers are required to have a Missouri retail sales license prior to making sales." Its Business Tax Registration page says a business must register "if it’s making sales of tangible personal property and taxable services". For sellers based elsewhere, the same page says: "If an out-of-state vendor makes sales of goods to a final consumer located in Missouri and the vendor has sufficient nexus with Missouri, the vendor is required to collect and remit Missouri Vendors Use tax."
How often to file sales tax returns
The DOR's sales tax FAQs (Missouri, as retrieved on October 31, 2026) base frequency on "the amount of state tax (4 percent for regular locations and 1 percent for food locations) due" and say: "If you collect state taxes of $500 or more per month, please report on a monthly basis." It continues: "If you collect $500 or less per month, you should file on a quarterly basis." And: "If you collect less than $200 per quarter, please file on an annual basis."
Sales tax return due dates
The same FAQs (Missouri, as retrieved on October 31, 2026) say: "Monthly returns are due on or before the last day of the following month." "Quarterly returns are due on or before the last day of the month following the end of the quarter." "Annual returns are due on or before January 31 of the following year."
Returns when you made no sales
The DOR's sales tax FAQs (Missouri, as retrieved on October 31, 2026) say: "Every business with a sales tax license is required to file a return even though no sales were made during the period covered by the return."
Corporate income tax due date
The DOR's corporation income tax page (Missouri, as retrieved on October 31, 2026) says: "The due date for most corporations is the 15th day of the fourth month after the close of the taxable year."
Individual estimated tax for 2026
Form MO-1040ES (Missouri DOR Form MO-1040ES, tax year 2026, revised 12-2025, as retrieved on October 31, 2026) says: "You are required to file a declaration of estimated tax if your Missouri estimated tax is expected to be $100.00 or more". Payments can be made "in equal installments on or before April 15, June 15, September 15, and January 15."
Deductions and write-offs
Confirm with your state how it treats each item.
- Corporations start from the federal figure: the DOR's corporation income tax page (Missouri, as retrieved on October 31, 2026) says "The corporation begins with Federal Taxable Income from the federal tax return."
- For the Missouri deductions, exemptions and credits that fit your business, ask the DOR or a tax professional.
Practical tips
- Apply for the license early: the DOR's registration FAQs (Missouri, as retrieved on October 31, 2026) say "For retail sales tax application, please allow 10 business days for processing."
- Selling without the license costs money: the same FAQs (Missouri, as retrieved on October 31, 2026) say unlicensed retail sales are "subject to a penalty of $500 for the first day of operation and a $100 fine every day thereafter, with a maximum penalty of $10,000."
- Buying stock to resell: the DOR's Business Tax Registration page (Missouri, as retrieved on October 31, 2026) says "When you purchase tangible personal property to be resold to a retailer, you will need to provide the seller with your completed Missouri Form 149, Sales/Use Tax Exemption Certificate. If you are the seller, you will need to collect the Form 149 from the purchaser."
- Larger sellers must print the total rate: the DOR's Sales/Use Tax page (Missouri, as retrieved on October 31, 2026) says a seller "who sells more than five hundred thousand dollars worth of goods per year" and gives a purchaser a receipt or invoice "shall clearly state on such sales receipt or sales invoice the total rate of all sales tax imposed on the sale".
- Billed's invoice software page says: "Save your tax rates and settings once, and Billed calculates taxes automatically when you create invoices and estimates."
- Billed's expense tracking page says: "An expense in Billed records who you paid, when, how much and which category it belongs to, with the receipt attached to the same entry."
Frequently asked questions
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At a glance
| Topic | Missouri DOR source |
|---|---|
| State rate and local taxes | Sales/Use Tax page |
| Retail sales license | Business Tax Registration page and FAQs |
| Filing frequency and due dates | Sales Tax FAQs |
| Corporate rate and due date | Corporation Income Tax page |
| 2026 individual rates and estimated tax | Form MO-1040ES (2026) |
When this isn't for you
Payroll withholding, use tax on your own purchases, special Missouri taxes and federal taxes are outside this page. Take those, and any question about your own taxes, to the Missouri DOR or a tax professional.