Kentucky Income Tax Rates for Business Owners: 3.5% Individual for 2026, 5% Corporate, $3,360 Deduction and the 2027 Outlook
Kentucky Income Tax Rates for Business Owners: 3.5% Individual for 2026, 5% Corporate, $3,360 Deduction and the 2027 Outlook
If you own a business in Kentucky, your income tax picture depends on how the business is organized. Sole proprietors, partners and LLC members pay the individual rate on their share of profit, while corporations pay a separate corporate rate. For tax years beginning on or after January 1, 2026, the individual rate is a flat 3.5%. This guide covers what that means for each business structure, the 2026 standard deduction, estimated payment deadlines, and what to expect for 2027.
Disclaimer: This is informational content, not legal or tax advice. Rates, deductions and deadlines change, and your situation may involve issues this guide does not address. Confirm current figures with the Kentucky Department of Revenue and speak with a qualified CPA or tax attorney before making decisions about your business.
The 2026 Individual Income Tax Rate
Kentucky's individual income tax is a flat 3.5% for tax years beginning on or after January 1, 2026, under KRS 141.020(2)(f). A flat rate means every dollar of taxable income is taxed at the same percentage, so there are no brackets to calculate. The rate has dropped over recent years. It was 4.5% for 2023, 4% for 2024 and 2025, and 3.5% for 2026.
For most small business owners, the individual rate is the one that matters. Sole proprietors report business profit on their personal return. LLC income passes through to the members, who report their share and pay the 3.5% rate on it. The LLC itself does not pay this individual income tax.
The 2026 Standard Deduction: $3,360
The 2026 standard deduction is $3,360. It reduces the income subject to Kentucky individual income tax. Kentucky indexes this amount to inflation each year, so the figure will change. Do not carry $3,360 forward into future planning without checking the Department of Revenue for the published amount for that year.
How the deduction applies to your pass-through income depends on your complete return, including any other income and adjustments. Run the numbers with a preparer or CPA before relying on a specific tax result.
The 5% Corporate Income Tax
Corporations pay a flat 5% corporate income tax under KRS 141.040(2). Kentucky apportions corporate income using a receipts-only, single sales factor formula under KRS 141.120(9). In practical terms, the share of your income Kentucky taxes depends on the share of your sales receipts sourced to Kentucky. Where your property or payroll sits does not drive the calculation.
If your corporation sells mostly to customers outside Kentucky, that formula can produce a very different result than a company with most of its customers in the state. Model your sourcing before you assume a number.
The Limited Liability Entity Tax (LLET)
Kentucky has no franchise tax, but LLCs and corporations owe the Limited Liability Entity Tax. The minimum is $175, and it applies when Kentucky gross receipts or gross profits are $3 million or less. Between $3 million and $6 million, the tax follows a sliding scale. Above $6 million, the tax is the lesser of 0.095% of Kentucky gross receipts or 0.75% of Kentucky gross profits. The sliding scale is not reproduced in this guide, so confirm the exact amount for your revenue level with the Department of Revenue before you budget for it.
A corporation generally owes both the 5% corporate income tax and the LLET. An LLC owes the LLET but its profit is taxed at the member level.
How Each Business Structure Is Taxed
| Business structure | How profit is taxed | Other Kentucky charges |
|---|---|---|
| Sole proprietorship | Flat 3.5% on the owner's share of profit, reported on the individual return | Local occupational license tax may apply |
| LLC | Profit passes through to members, taxed at 3.5% on each member's return | LLET with a $175 minimum; $15 annual report |
| Corporation | 5% corporate income tax on Kentucky-apportioned income | LLET with a $175 minimum; $15 annual report |
| Pass-through entity making the entity-level election | 3.5% paid at the entity level, with owners receiving a refundable credit | LLET applies if the entity is an LLC or other limited liability entity; $15 annual report if domestic |
The Pass-Through Entity Tax Election
Pass-through entities may elect to pay the 3.5% tax at the entity level instead of passing it through to owners. The owners then receive a refundable credit under KRS 141.209. This can change when and how the tax is paid and how the owners' personal returns look, so it is a decision to make with your CPA.
Confirm whether your entity qualifies, what the election requires, and the filing steps with the Department of Revenue before the year begins. Do not assume the election is automatically better or worse for your owners. The result depends on each owner's facts.
Estimated Tax Payments and Due Dates
Kentucky expects tax to be paid as income is earned, not only when you file your annual return. The thresholds and due dates differ by taxpayer type.
| Taxpayer | When estimated payments are required | Due dates (calendar-year filers) | Authority |
|---|---|---|---|
| Individuals | Expected income not subject to Kentucky withholding is over $5,000, unless expected tax is $500 or less | April 15, June 15, September 15, January 15 | KRS 141.305 |
| Corporations and pass-through entities | Expected tax is over $5,000 | April 15, June 15, September 15, December 15 | KRS 141.044 |
The individual due dates match the federal estimated payment dates. Corporations and pass-through entities that file on a calendar year use the dates in the second row. Missing a required payment can create an underpayment problem, so confirm the rules and any penalty exposure with the Department of Revenue or your CPA before you skip one.
Sales Tax and Local Taxes
Income tax is only one part of Kentucky's business tax picture. Kentucky has a 6% state sales tax and no local sales taxes, but the tax reaches about 50 services in addition to tangible goods. If you sell taxable goods or services, you need a sales tax permit. Businesses register their tax accounts with the Department of Revenue using Form 10A100 through MyTaxes.ky.gov.
Local occupational license taxes are a separate layer. Cities, counties and school districts levy these taxes on payroll, net profits or gross receipts. Kentucky has 120 counties and about 420 cities, and each jurisdiction runs its own forms and revenue office. Check the occupational license tax district for every city and county where your business operates. Kentucky has no statewide general business license, so registering an entity or an assumed name is a filing, not a license.
What to Expect for 2027
The individual rate is set at 3.5% for 2026, and it stays at 3.5% for 2027 unless the Kentucky General Assembly passes a reduction. The Department of Revenue cannot lower the rate on its own under KRS 141.020(2)(g). As of October 2026, the statute reflects no scheduled reduction.
The standard deduction is indexed each year, so the 2027 amount will differ from $3,360. Check the Department of Revenue for the published figure once it is released. Confirm the 5% corporate rate and the LLET schedule with the Department each year as well.
For planning, the safest approach is to budget at the current 3.5% individual rate and treat any future cut as upside. Watch legislation that the General Assembly passes, and revisit your projections when the new figures are published.
Practical Checklist for Business Owners
- Confirm your entity type and whether it is a pass-through for tax purposes.
- Register your tax account through MyTaxes.ky.gov using Form 10A100, and obtain a sales tax permit if you sell taxable goods or services.
- Estimate your expected Kentucky income and compare it to the $5,000 estimated payment thresholds.
- Calendar the estimated payment dates that apply to your entity or personal return.
- File your $15 annual report by June 30 if you operate as an LLC or corporation.
- Confirm the occupational license tax requirements for your city and county.
- Check the 2027 standard deduction and confirm the individual and corporate rates in early 2027.
Official Resources
- Kentucky Department of Revenue: https://revenue.ky.gov/
- Business tax registration: https://revenue.ky.gov/Business/Pages/Register-Business.aspx
- Kentucky Secretary of State, Division of Business Filings: https://www.sos.ky.gov/bus/business-filings/Pages/default.aspx
- Kentucky One Stop Business Portal: https://onestop.ky.gov/
- Kentucky Small Business Development Center: https://kentuckysbdc.com/
Work With a Qualified Professional
Kentucky's rates are simple on paper, but the interaction between entity type, pass-through income, the entity-level election, apportionment and local taxes can get complicated quickly. A Kentucky-licensed CPA or tax attorney can model your specific situation and confirm the figures in this guide for your tax year. The Kentucky Small Business Development Center can also help you think through business planning and recordkeeping.
Disclaimer: This guide is informational only and does not constitute legal or tax advice. Verify all rates, thresholds, deductions and deadlines with the Kentucky Department of Revenue or a qualified professional before acting on them.