What is the cost of living in St. Louis compared to the national average?

St. Louis's cost of living index is 86, which is 14% below the national average.

What is the self-employment tax rate?

Self-employment tax is 15.3% on net self-employment income (up to SS wage base of $176,100 for 2025). This covers Social Security (12.4%) and Medicare (2.9%).

How do I calculate quarterly estimated taxes for self-employment?

Estimate full-year income. Calculate income tax + SE tax. Divide by 4. Due dates: April 15, June 15, September 15, January 15. Underpay penalty if under 90% of liability.

Can I deduct half of self-employment tax?

Yes — deduct 50% of SE tax on Schedule 1. Lowers your AGI (not just taxable income). On $50K net SE income: $7,065 SE tax, $3,532 deduction.

What business expenses reduce self-employment taxes?

All legitimate business deductions reduce net SE income: home office, vehicle, equipment, software, professional development, health insurance premiums, retirement contributions.

What is the SE tax deduction for self-employed health insurance?

Self-employed can deduct 100% of health insurance premiums (for themselves and family) as an above-the-line deduction — reduces both income tax and SE tax base.

Self-Employed Tax Calculator for St. Louis, MO

Updated 2026 · Local data pre-filled

📍 Customized for St. Louis, Missouri

Self-employed workers in St. Louis pay 15.3% self-employment tax on 92.35% of net income, plus federal and Missouri state income tax. At the median income of $61,400, that's roughly $8,676 in SE tax alone before income tax. Quarterly estimated payments are required to avoid penalties.

Median Home

$205k

Median Rent

$900/mo

Median Income

$61k/yr

Property Tax

1.00%

Cost of Living

86 / 100 avg

✓ Calculator below is pre-filled with St. Louis local data

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Self-Employment Tax Calculator — Calculate Your SE Tax and Quarterly Payments

Calculate your self-employment taxes, quarterly estimated payments, and net income.

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Business Expenses

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State Tax Rate

Retirement Contributions

SEP-IRA, Solo 401k

Health Insurance Premiums

100% deductible for self-employed

Your Results

Net Income After All Taxes: $63,733

Quarterly Estimated Tax: $4,067

Tax Breakdown

Gross Income	$90,000
Business Expenses	$10,000
Net SE Income	$80,000
Self-Employment Tax (15.3%)	$11,304
Federal Income Tax	$4,963
State Income Tax	$0
Total Tax Burden	$16,267
Effective Tax Rate	18.1%
Net Income	$63,733
Quarterly Estimated Tax	$4,067

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How This Calculator Works

SE Tax = Net Income × 92.35% × 15.3%

Taxable Income = Net Income − ½SE Tax − Retirement − Health Insurance − Standard Deduction

Quarterly Estimate = Total Annual Tax ÷ 4

Frequently Asked Questions

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Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.

How St. Louis Compares to the National Average

Understanding how St. Louis stacks up helps you calibrate your financial planning.

Metric	St. Louis, MO	US Average	Difference
Median Home Price	$205,000	$420,800	-51.3%
Median Monthly Rent	$900	$1,713	-47.5%
Median Household Income	$61,400	$74,580	-17.7%
Property Tax Rate	1.00%	1.10%	-9.1%
Cost of Living Index	86	100	-14.0%

Sources: U.S. Census Bureau, BLS, Zillow, NAR (2024–2025). Green = favorable for residents; red = less favorable.

St. Louis Financial Snapshot

Population (Metro): 2,820,000
Unemployment: 4.3%
Avg Commute: 24 min
Median Age: 36.6
Price-to-Rent Ratio: 19.0x
Annual Property Tax: $2,050

← Self-Employed Tax Calculator (all states)← Self-Employed Tax Calculator for Missouri

Self-Employed Tax Calculator in Other Missouri Cities

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Frequently Asked Questions — St. Louis

What is the median home price in St. Louis, MO?

The median home price in St. Louis is $205,000 as of 2025–2026. This is below the national median of $420,800.

What is the average rent in St. Louis?

Median monthly rent in St. Louis is $900. That works out to $10,800/year, or 18% of the median household income — within the commonly recommended 30% of income guideline.

Is St. Louis affordable?

St. Louis's cost of living index is 86 vs. the national average of 100. With a median household income of $61,400/year and a median home price of $205,000, the price-to-income ratio is 3.3x. St. Louis remains relatively affordable compared to many US metros.

What is the property tax rate in St. Louis?

The effective property tax rate in St. Louis is 1.00% of assessed value. On the median home of $205,000, that's roughly $2,050/year ($171/month).