Kentucky has the cheapest LLC filing fee in the entire country, just $40. What the headline number doesn't tell you is that a separate state tax with a $175 floor applies to most LLCs every year, so the real ongoing cost is higher than the filing fee suggests. Here's what it takes to start a business in Kentucky in 2026.
1. Which business structure fits you?
Before you file anything, it helps to know what you're actually choosing between.
- Sole proprietorship. No filing required to start, and you and the business are legally the same entity. Simple, but you're personally liable for whatever the business owes.
- Partnership. Two or more people running a business together, with the same liability exposure as a sole proprietorship, just split across partners.
- LLC. The most common structure for small businesses in Kentucky. It separates your personal assets from the business's debts and lawsuits.
- Corporation, either S-corp or C-corp. More paperwork and more formality, usually worth it once you're bringing on investors or multiple shareholders.
For a deeper comparison, see our guide on choosing a business structure.
LLCs and corporations register with the Kentucky Secretary of State, Business Filings Division, the agency that handles business filings statewide. Sole proprietorships and general partnerships don't register there.
2. Register your business
Forming an LLC
You form an LLC in Kentucky by filing Articles of Organization with the Secretary of State through the Kentucky One Stop Business Portal. The filing fee is $40, one of the lowest in the country, and online processing takes about 3 to 5 business days.
Every LLC needs a registered agent with a physical Kentucky street address (a P.O. box doesn't qualify), available during business hours. You can act as your own agent, or hire a commercial service.
Kentucky doesn't require an operating agreement by law, but it's still worth writing one, particularly for multi-member LLCs, to spell out how decisions and profits get split.
Sole proprietorships and DBAs
Sole proprietorships don't file Articles of Organization. If you're operating under an assumed name, you'll register a Certificate of Assumed Name with the Secretary of State for a small fee.
3. Get an EIN
An Employer Identification Number is free straight from the IRS and takes about 15 minutes online. You'll need one to open a business bank account, hire anyone, or file most business tax forms, even if you're a single-member LLC with no employees.
4. Check licenses and permits
Kentucky doesn't issue a single general statewide business license either. What you need depends on your industry and city: professional licensing for regulated fields, local occupational licenses in cities like Louisville and Lexington, and a sales tax permit from the Department of Revenue if you sell taxable goods or services. Our guides on professional licensing by industry and zoning laws for home businesses cover more of this.
5. Understand Kentucky taxes
Kentucky has a flat personal income tax rate of 3.5% for 2026, one of the lower flat rates in the country. On top of that, Kentucky imposes a Limited Liability Entity Tax (LLET) on most LLCs, corporations, and S-corps, calculated as the lesser of a small percentage of Kentucky gross receipts or gross profits, with a $175 minimum. Starting in 2026, LLCs with Kentucky gross receipts under $100,000 are exempt from the LLET entirely, which removes it for a lot of small solo operations.
Sales tax is a flat 6% statewide, and Kentucky doesn't allow local add-ons, so the rate is the same everywhere in the state.
6. Stay compliant
Every Kentucky LLC files an Annual Report with the Secretary of State, due between January 1 and June 30 each year. The fee is $15, one of the cheapest in the country (waived for veteran-owned LLCs). Separately, if you're above the LLET exemption threshold, the Limited Liability Entity Tax return is due April 15 with the Department of Revenue.
Kentucky business costs at a glance
| Item | Cost |
|---|---|
| Articles of Organization (LLC) | $40 |
| Annual Report (every year, due by June 30) | $15 |
| Limited Liability Entity Tax (if gross receipts over $100,000) | $175 minimum |
| Registered agent service (optional) | $100 to $300/year |
| EIN | Free (IRS) |
| State income tax | 3.5% flat |
| State sales tax | 6% flat, no local add-on |
Frequently asked questions
Does Kentucky have the cheapest LLC filing fee in the country?
Yes, just $40, but a separate Limited Liability Entity Tax with a $175 minimum applies to most LLCs above a gross receipts threshold, so the real ongoing cost is higher.
What is Kentucky's Limited Liability Entity Tax?
A tax on most LLCs, corporations, and S-corps with a $175 minimum, though as of 2026 LLCs with Kentucky gross receipts under $100,000 are exempt entirely.
What's the personal income tax rate in Kentucky?
A flat 3.5% for 2026.
How much does Kentucky's Annual Report cost?
$15, one of the cheapest in the country, due between January 1 and June 30.
Does sales tax vary by city in Kentucky?
No, it's a flat 6% statewide with no local add-ons.
Fees and rates above come from the Kentucky Secretary of State and Department of Revenue as of 2026, and they do change over time, so double check before you file. None of this is legal or tax advice. Talk to a Kentucky-licensed attorney or CPA about your specific situation.