2025 Tax Year

Missouri Side Hustle Tax Calculator

Calculate your Missouri state tax (4.70%), federal tax, and self-employment tax on 1099 income.

MO4.70%

6.2 million residents

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2025 rates

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Last updated: January 2026 · Data from IRS Rev Proc 2024-40

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State

W-2 Income (from your day job)

Side Hustle Income *

Business Expenses (optional)

Missouri offers side hustlers a moderately competitive tax environment with progressive state income tax rates topping out at 4.70% for 2025. The Show-Me State has no local income taxes in most areas, though Kansas City and St. Louis have 1% earnings taxes.

Missouri Tax Guide

How Side Hustle Taxes Work in Missouri

Missouri uses a progressive income tax system:

**Missouri state tax rates (2025):** - 0% on income up to $1,273 - Graduated rates up to 4.70% on income over $8,911

**Local earnings taxes:** - Kansas City: 1% earnings tax - St. Louis City: 1% earnings tax - Most other cities: No local income tax

Missouri has been reducing rates annually and may continue to do so.

Example

What Missouri Side Hustlers Owe

Let's say you're a single filer in Kansas City with a $52,000 W-2 job and $15,000 in side hustle income from freelance writing, with $2,000 in business expenses.

**Your estimated taxes on the side hustle:** - Net self-employment income: $13,000 - Federal SE tax (15.3% of 92.35%): ~$1,839 - Federal income tax on side income: ~$2,860 (22% bracket) - Missouri state tax (4.70%): ~$611 - Kansas City earnings tax (1%): ~$130 - **Total additional tax: ~$5,440**

Important Dates

Missouri Tax Deadlines 2025

Missouri estimated tax deadlines: - **Q1**: April 15, 2025 - **Q2**: June 17, 2025 - **Q3**: September 15, 2025 - **Q4**: January 15, 2026

Use Form MO-1040ES for Missouri estimated tax payments.

Save Money

Common Deductions for Missouri Freelancers

Missouri freelancers benefit from several deduction opportunities including a unique state-specific benefit. **Home office expenses**: Claim dedicated business space using simplified ($5/sq ft) or actual expense method. **Vehicle expenses**: 67 cents/mile for 2025; essential for rideshare drivers and those traveling to client sites in KC or St. Louis. **Equipment and software**: Computers, cameras, tools, and business software are deductible. **Professional services**: Accounting, legal, and tax preparation fees are fully deductible. **Health insurance premiums**: Self-employed individuals can deduct 100% of health insurance costs. **Retirement contributions**: SEP-IRAs and Solo 401(k)s reduce both federal and Missouri taxable income. **Missouri SE Tax Deduction**: Missouri uniquely allows a deduction for 50% of your federal self-employment tax paid—this reduces your Missouri taxable income beyond federal calculations. This state-specific benefit can save you an additional 2-3% on your side hustle income. All Schedule C deductions flow through to reduce Missouri taxes, and if you're in Kansas City or St. Louis, they also reduce your 1% earnings tax liability.

Common Questions

Missouri Side Hustle Tax FAQ

What is Missouri's top tax rate?

Missouri's top income tax rate is 4.70% for 2025, applying to income over $8,911. Kansas City and St. Louis add a 1% earnings tax.

Do I pay Kansas City earnings tax on my side hustle?

Yes, if you live or work in Kansas City, you owe a 1% earnings tax on net self-employment income in addition to Missouri state tax.

Is Missouri reducing its income tax rates?

Yes, Missouri has been phasing in tax rate reductions. The top rate dropped to 4.70% for 2025 from 4.80% in 2024.

Do I need to register my side hustle in Missouri?

Sole proprietors using their legal name don't need state registration. If using a trade name (DBA), file a Fictitious Name Registration with the Secretary of State. LLCs must register with the Missouri Secretary of State. Sellers need a Missouri Sales Tax License.

How do I pay Kansas City or St. Louis earnings tax?

Kansas City and St. Louis each have their own earnings tax systems. File quarterly or annually with your city's Revenue Division. The 1% tax applies to net self-employment income earned within city limits or by city residents.

What is Missouri's 50% SE tax deduction?

Missouri allows you to deduct 50% of your federal self-employment tax when calculating Missouri taxable income. This is a state-specific benefit that effectively reduces your Missouri tax rate. For example, if you paid $2,000 in federal SE tax, you can deduct $1,000 from your Missouri income.

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