Missouri Contractor Tax Guide
Verified current statutory flat rate as of 2026-09-23.
Combined Social Security and Medicare tax (Self-Employment).
Progressive marginal rates, applied separately to taxable income.
How 1099 Taxes Work in Missouri
As a freelancer, consultant, or gig worker in Missouri, you are technically your own employer. This means you aren't subject to standard W-2 withholding from a "boss." Instead, you must manually track your earnings and determine federal and any applicable state obligations. Check the Missouri Department of Revenue for state-specific rules.
Quarterly Estimated Payments
Federal estimated payments generally apply when you expect to owe at least $1,000, subject to withholding and safe-harbor rules. Typical federal due dates are below; weekends and holidays can shift them. January is in the following year. State requirements vary:
Deductions and Expenses in Missouri
The single best way to lower your tax bill in Missouri is to optimize your business deductions. Common expenses you can subtract from your gross income include:
Home Office
A proportional amount of rent or mortgage for your dedicated workspace.
Software & Tools
Subscriptions, laptops, and professional design or dev tools.
Travel & Auto
Mileage driven for client meetings or local hardware purchases.
Internet & Phone
The percentage of your utility bills used primarily for business.
Official Missouri Tax Resources
Missouri Department of Revenue
Visit the official state portal to download forms, pay online, or contact support.
Calculate Your Net Pay
Ready to see an estimate of how much you'll keep after Missouri taxes? Try our free take-home estimator.
Open CalculatorDoes Missouri tax income?
Missouri has a flat income tax: everyone pays the same 4.7% rate regardless of income level. Our estimator uses this statutory rate directly.