Self-Employment Tax in Kentucky (2026)

Fact-checked by the LegalGlass editorial team against primary sources · Published Aug 6, 2026 · Last updated Aug 6, 2026

Self-employment tax in Kentucky consists of the federal Social Security and Medicare tax (15.3% on net earnings up to annual limits) plus Kentucky's flat individual income tax administered by the Kentucky Department of Revenue. Many Kentucky cities and counties also levy local occupational license taxes on business net profits. Both federal and state taxes are typically paid via quarterly estimated payments.

Overview of Self-Employment Tax in Kentucky

Self-employment tax for individuals operating businesses in Kentucky involves two main layers, plus a common third: federal self-employment tax, Kentucky state income tax, and local occupational license taxes. The federal self-employment tax covers Social Security and Medicare contributions for self-employed individuals, mirroring the FICA taxes withheld from employee wages. Kentucky then imposes its own individual income tax on net earnings from self-employment, calculated from your federal adjusted gross income after certain deductions.

This guide details the rates, calculation methods, payment obligations, and Kentucky-specific considerations for self-employed individuals, including sole proprietors, partners in a partnership, and members of a limited liability company (LLC) that is not taxed as a corporation. Understanding these obligations is essential for compliance and for avoiding penalties. For a broader look at the federal component, see our main self-employment tax guide and the business tax hub.

Federal Self-Employment Tax (Social Security and Medicare)

The federal self-employment tax rate is 15.3%. This rate is composed of two parts:

• 12.4% for Social Security, applied to net earnings up to an annual wage base (for example, $168,600 for 2024, adjusted for inflation in later years including 2026).
• 2.9% for Medicare, applied to all net earnings from self-employment, with no income limit.

Higher earners also owe an Additional Medicare Tax of 0.9% on wages and self-employment income above threshold amounts set by filing status. Net earnings from self-employment are generally your gross trade or business income minus allowable deductions. For self-employment tax purposes, you multiply your net profit by 92.35% (0.9235) before applying the 15.3% rate; this adjustment reflects that employees do not pay Social Security and Medicare tax on the employer's share.

The federal self-employment tax is reported on IRS Schedule SE (Form 1040). One-half of your self-employment tax is deductible when calculating your adjusted gross income (AGI) for federal income tax purposes. Because Kentucky begins its calculation from federal AGI, this deduction effectively reduces both your federal and Kentucky income tax. See our self-employment tax calculator to estimate the federal portion.

Kentucky State Income Tax on Self-Employment Income

Kentucky imposes a flat individual income tax on residents and on non-residents earning income from Kentucky sources. Self-employment income is included in your federal adjusted gross income, which is the starting point for calculating your Kentucky taxable income after Kentucky-specific additions, subtractions, and the standard deduction. The flat rate is set by the General Assembly and administered by the Kentucky Department of Revenue (DOR); it has been subject to legislative reductions in recent years, so confirm the current-year figure directly with the DOR before filing.

Because Kentucky applies a single flat rate rather than graduated brackets, the calculation is comparatively simple: Kentucky taxable income multiplied by the current flat rate, less any applicable credits. The specific rate, standard deduction, and credits are published annually. You can find the current tax rate and forms on the Kentucky DOR Individual Income Tax page.

Kentucky also offers credits and subtractions that may reduce your state income tax liability, and it does not tax Social Security benefits. It is important to consult the official DOR publications or a tax professional to determine eligibility for these provisions and to see how forming an LLC in Kentucky affects your filings.

Paying Self-Employment Tax: Federal and Kentucky Estimated Taxes

Because self-employment income is not subject to employer withholding, self-employed individuals generally must pay both federal and Kentucky income taxes through estimated tax payments. These payments are typically made quarterly throughout the tax year.

Federal Estimated Taxes

You must pay federal estimated taxes if you expect to owe at least $1,000 in tax for the year, including your federal income tax plus your self-employment tax. Payments are made using IRS Form 1040-ES, Estimated Tax for Individuals. The payment due dates are generally:

• April 15 (for income earned January 1 to March 31)
• June 15 (for income earned April 1 to May 31)
• September 15 (for income earned June 1 to August 31)
• January 15 of the following year (for income earned September 1 to December 31)

If a due date falls on a weekend or holiday, the deadline shifts to the next business day. You can pay federal estimated taxes online via IRS Direct Pay, through the Electronic Federal Tax Payment System (EFTPS), or by mail with a payment voucher.

Kentucky Estimated Taxes

Similarly, you generally must pay Kentucky estimated taxes if you expect to owe Kentucky income tax above the state threshold on income not subject to withholding, such as self-employment income. Payments are made using Kentucky Form 740-ES, Estimated Tax Voucher. The due dates generally align with the federal schedule of April 15, June 15, September 15, and January 15 of the following year.

Kentucky estimated payments can be made online through the Department of Revenue's electronic payment system or by mail with the voucher. Underpaying estimated tax during the year can result in penalties from both the IRS and the Kentucky DOR, so review your projected liability each quarter.

Kentucky Local Occupational License Taxes

A distinctive feature of doing business in Kentucky is the prevalence of local occupational license taxes. Many Kentucky cities, counties, and school districts impose an occupational license tax on the net profits of businesses and on wages earned within their jurisdiction. For a self-employed person, this typically means a tax on the net profit of your trade or business apportioned to that locality, filed on a local net-profits return rather than with the state.

Rates, filing forms, and thresholds vary widely from one jurisdiction to another, and a business operating in more than one city or county may owe occupational license tax in each. These local taxes are separate from the state flat income tax and from federal self-employment tax. Because there is no single statewide rate, you should confirm requirements with each city or county where you perform work, and review the Kentucky DOR's general business tax resources. Keeping any required Kentucky business licenses current at the state and local level is part of staying compliant.

Impact of Business Structure on Self-Employment Tax

The business structure you choose affects how your income is taxed, particularly for federal self-employment tax:

• Sole Proprietorship: The business and owner are the same for tax purposes. All net business income is subject to federal self-employment tax and Kentucky income tax.
• Partnership: Each partner's share of the partnership's net earnings is subject to federal self-employment tax and Kentucky income tax.
• Limited Liability Company (LLC):
  • Single-Member LLC: By default a single-member LLC is a disregarded entity (sole proprietorship) for tax purposes. The owner reports income on Schedule C, and net earnings are subject to federal self-employment tax and Kentucky income tax.
  • Multi-Member LLC: By default treated as a partnership; each member's share of net earnings is subject to federal self-employment tax and Kentucky income tax.
  • LLC electing S-Corporation status: An LLC can elect to be taxed as an S-corporation. Owner-employees take a reasonable salary subject to FICA, while remaining profits distributed as dividends are generally not subject to self-employment tax. This can reduce the self-employment tax burden but adds payroll and compliance requirements. See our guide to the S-corp election.

The choice of structure has significant tax implications, so it is advisable to consult a tax professional. For more on structures, see forming an LLC in Kentucky, how to form an LLC, or S-Corp vs. LLC.

Recordkeeping and Compliance

Accurate recordkeeping is essential for self-employed individuals in Kentucky. Keep detailed records of all business income and expenses to correctly calculate net earnings from self-employment, including invoices, receipts, bank statements, and mileage logs. Good records support the deductions you claim and help you prepare accurate federal, state, and local returns.

Compliance also involves:

• Obtaining an Employer Identification Number (EIN): Sole proprietors without employees may use their Social Security Number, but an EIN is generally required for partnerships, multi-member LLCs, and sole proprietors with employees. See how to get an EIN in Kentucky.
• Filing federal returns: Form 1040, Schedule C (sole proprietors/single-member LLCs), Schedule K-1 (partners), and Schedule SE.
• Filing Kentucky returns: Form 740, Kentucky Individual Income Tax Return, or the appropriate non-resident form.
• Filing local occupational returns: Net-profits returns with each city or county that imposes an occupational license tax where you work.
• Maintaining licenses and permits: Keep required Kentucky business licenses and, if you sell taxable goods, register for Kentucky sales tax.

Failure to keep proper records or comply with tax obligations can lead to audits, penalties, and interest from the IRS, the Kentucky DOR, and local tax authorities. A Kentucky registered agent and orderly records help ensure you receive notices on time.

Frequently Asked Questions

What is the self-employment tax rate in Kentucky?

The federal self-employment tax rate is 15.3% (12.4% for Social Security up to the annual wage base, plus 2.9% for Medicare). Kentucky separately levies a flat individual income tax on your net earnings, administered by the Kentucky Department of Revenue.

How do I pay self-employment tax in Kentucky?

You pay federal self-employment tax and Kentucky income tax through quarterly estimated payments. Use IRS Form 1040-ES for federal amounts and Kentucky Form 740-ES for state amounts. Payments can be made online or by mail.

Is self-employment tax deductible in Kentucky?

Yes, one-half of your federal self-employment tax is deductible when calculating your federal adjusted gross income (AGI). Because Kentucky uses federal AGI as its starting point, this deduction also flows through to your Kentucky income tax calculation.

Do self-employed people in Kentucky pay local occupational license taxes?

Often, yes. Many Kentucky cities and counties impose occupational license taxes on net profits or payroll earned within their jurisdiction. These are administered locally, separate from state income tax, so check with the city or county where you work.

Do I need to pay estimated taxes in Kentucky?

Generally yes. If you expect to owe Kentucky income tax above the state threshold on income not subject to withholding, you must make quarterly estimated payments using Form 740-ES. Payments are typically due April 15, June 15, September 15, and January 15.

Related

• Self-Employment Tax: A Complete Guide (federal hub)
• Self-Employment Tax Calculator
• Business Tax Hub
• How to Form an LLC in Kentucky
• Kentucky Sales Tax
• Self-Employment Tax in Connecticut
• Self-Employment Tax in Minnesota
• Self-Employment Tax in South Carolina
• How to Get an EIN
• S-Corp vs. LLC

Sources

1. IRS - Self-Employment Tax (Social Security and Medicare Taxes).
2. IRS - About Schedule SE (Form 1040), Self-Employment Tax.
3. IRS - Tax Topic 554, Self-Employment Tax.
4. IRS - About Form 1040-ES, Estimated Tax for Individuals.
5. IRS - Questions and Answers for the Additional Medicare Tax.
6. Kentucky Department of Revenue - Individual Income Tax.
7. Kentucky Department of Revenue - Estimated Individual Income Tax Payments (Form 740-ES).
8. Kentucky Department of Revenue - Business Taxes.
9. Kentucky Department of Revenue - Individual Income Tax Filing Tips.
10. Justia - Kentucky Revised Statutes Chapter 141 (Income Taxes).
11. Justia - Kentucky Revised Statutes Chapter 67 (Occupational License Taxes).
12. Cornell Law School Legal Information Institute - 26 U.S. Code § 1401 - Rate of tax (Federal SE Tax).
13. Cornell Law School Legal Information Institute - 26 U.S. Code § 1402 - Definitions (Net earnings from self-employment).
14. Cornell Law School Legal Information Institute - 26 U.S. Code § 6654 - Failure by individual to pay estimated income tax.
15. Cornell Law School Legal Information Institute - 26 U.S. Code § 3101 - Rate of tax (FICA/Additional Medicare).

LegalGlass provides general information for educational purposes and is not a law firm or a substitute for advice from a licensed attorney or tax professional. Laws, fees, and thresholds change; verify current requirements with the IRS and the Kentucky Department of Revenue before acting.