Kentucky EIN Number, Form 10A100 and Your KEIN
Last updated November 1, 2026 · Written by the EIN Registration filing team
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After your EIN in Kentucky
| Account | Agency | Number you get | Register |
|---|---|---|---|
| State income tax withholding | Kentucky Department of Revenue | Employer's Withholding Tax Account number, 6 or 9 digits | MyTaxes |
| Unemployment insurance | Kentucky Office of Unemployment Insurance | Kentucky Employer Identification Number (KEIN), 9 digits, beginning with 2 for new employers | KUIP |
| Sales tax | Kentucky Department of Revenue | Sales and use tax permit | MyTaxes |
Form 10A100, the Kentucky Tax Registration Application (or New Business Registration in MyTaxes.ky.gov), applies for several Department of Revenue accounts at once, including Employer's Withholding, Sales and Use Tax and the Limited Liability Entity Tax. The form says it does not include Secretary of State registration, unemployment insurance or workers' compensation.
Kentucky moved employer unemployment accounts to the Kentucky Unemployment Insurance Portal (KUIP) on August 17, 2026. Registration is online only, and a new employer receives a nine-digit Kentucky Employer Identification Number (KEIN) beginning with 2, a different number from the federal EIN.
Many Kentucky cities and counties impose their own occupational license taxes on individuals and firms doing business there, and many require a local business license. These are handled by the city or county, not the Department of Revenue.
Also on the Kentucky list
- Register with the Kentucky Department of Revenue through New Business Registration in MyTaxes, or on Form 10A100, for the tax accounts the business needs; the EIN is required to open them.
- File the LLC annual report with the Secretary of State between January 1 and June 30 every year, starting the calendar year after formation.
Agency sites checked November 1, 2026 · All 50 states
What is different about Kentucky
- Kentucky levies a Limited Liability Entity Tax on every LLC, including single-member LLCs that are disregarded for federal purposes. Those file Form 725 with the Department of Revenue even though they file no separate federal return, which surprises owners who chose a disregarded LLC precisely to avoid a business-level return.
- Kentucky's annual report deadline is June 30 for every LLC regardless of when it was formed, and the Secretary of State begins administrative dissolution of companies that miss it in the autumn. The report is filed by organization number, not by EIN.
- Kentucky's Department of Revenue registration, Form 10A100 or New Business Registration in MyTaxes, is a single application that opens sales and use tax, withholding and the LLET account together. The form itself says it does not cover unemployment insurance, which is a separate registration with the Office of Unemployment Insurance.
Before you apply
The SS-4 must match the Kentucky Secretary of State filing; its organization number is a state index, not a tax ID.
Kentucky EIN questions
How do I get an EIN number in Kentucky?
File IRS Form SS-4 after the Kentucky Secretary of State approves any formation filing; there is no Kentucky EIN application. Form 10A100, the Kentucky Tax Registration Application (or New Business Registration in MyTaxes.ky.gov), applies for several Department of Revenue accounts at once, including Employer's Withholding, Sales and Use Tax and the Limited Liability Entity Tax. The form says it does not include Secretary of State registration, unemployment insurance or workers' compensation.
Is there a Kentucky EIN or state tax ID number?
No; only the IRS issues EINs (also called the FEIN or federal tax ID). Kentucky's own numbers are the organization number from the Kentucky Secretary of State, the Employer's Withholding Tax Account number from the Kentucky Department of Revenue, the Kentucky Employer Identification Number (KEIN) from the Kentucky Office of Unemployment Insurance, and the sales and use tax permit from the Kentucky Department of Revenue.
Is the Kentucky Employer's Withholding Tax Account number the same as my EIN?
No. The Kentucky Department of Revenue assigns it when you register as an employer in MyTaxes, and it is 6 or 9 digits. It goes in W-2 box 15; the EIN goes in box b.
Where do I register for Kentucky unemployment insurance?
With the Kentucky Office of Unemployment Insurance, online through KUIP. It assigns a Kentucky Employer Identification Number (KEIN), 9 digits, beginning with 2 for new employers, a separate number from the EIN.
Do I need a Kentucky sales and use tax permit?
Only if you sell what Kentucky taxes. The Kentucky Department of Revenue issues it through MyTaxes, and your returns are filed under its number, not the EIN.
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Sources
- Kentucky Secretary of State, business filings
- Kentucky Department of Revenue, limited liability entity tax
- Kentucky Department of Revenue, register a business
- Kentucky Department of Revenue: 10A100(P)(4 25) FINAL locked Fill in (PDF)
- Kentucky Department of Revenue: 42A806 CD (3 25) (005) FINAL (PDF)
- Kentucky Office of Unemployment Insurance: If you are an Employer or TPA
- Kentucky Office of Unemployment Insurance: KUIP Employer and Third Party Administrator FAQ Document (PDF)
- Kentucky Office of Unemployment Insurance: Registering a New Employer Job Aid (PDF)
You can also apply for an EIN directly with the IRS at irs.gov at no cost.