Getting an EIN for Your Kentucky LLP

The IRS assigns each business an Employer Identification Number, a nine-digit federal tax identification number. Think of it as a Social Security number for your business: it's how the IRS, banks, and other institutions identify your partnership on tax filings, bank accounts, and official paperwork.

Why an LLP always needs one

For some businesses an EIN is optional — a single-member LLC with no employees can sometimes get by on the owner's Social Security number. That's not the case for a limited liability partnership. Because a partnership files its own federal income tax return (Form 1065), the LLP needs its own EIN to file. There's no version of running an LLP where you skip the EIN.

Beyond the tax return, you'll need the EIN to:

• Open a business bank account. Banks require an EIN to open an account in the partnership's name, and a separate business account is essential to preserving the LLP's liability shield.
• Hire employees and run payroll. Employment tax filings and payroll all key off the EIN.
• Provide it to clients and vendors. Businesses that pay your LLP may request the EIN for their own tax reporting.
• Register for Kentucky tax accounts. Setting up your state tax accounts, including for the LLET, generally references the EIN.

The IRS issues EINs directly and at no cost. Be wary of any site that charges a fee just to "get" an EIN — the number itself is always free from the IRS; a legitimate service is charging for handling the paperwork, not for the number.

The online application (the fast path)

The quickest route is the IRS EIN Assistant at IRS.gov. The online application:

• Takes roughly ten to fifteen minutes to complete in one sitting (it can't be saved and resumed).
• Issues the EIN immediately on completion — you can download and print the confirmation letter and start using the number the same day.
• Is available during the IRS's posted hours for the tool.

To apply online, the "responsible party" — typically one of the partners — needs a valid US Social Security number or ITIN. The responsible party is the person who controls or manages the partnership.

Applying by fax or mail

If no responsible party has an SSN or ITIN, or you simply prefer paper, you can file Form SS-4 by fax or mail. Fax turnaround is typically a few business days; mail takes several weeks. This is the standard route for partnerships with foreign partners who lack a US tax ID.

The application goes faster if you have your details ready. Ideally, register your LLP with the Kentucky Secretary of State first, so your partnership's legal name and formation details are settled before you apply — that way the EIN matches your official record.

Information to have on hand

• The LLP's exact legal name as registered, including the LLP designator
• The partnership's mailing address
• The responsible party's name and SSN or ITIN
• The reason for applying (starting a new business)
• The number of partners / members and the expected number of employees, if any
• The date the partnership started or will start and its accounting year

Match the name to your registration

A common, avoidable headache is applying for the EIN with a slightly different name than the one on your LLP registration. Keep them identical. If the EIN and your Secretary of State record don't match, you can run into friction opening a bank account or filing returns down the road.

The EIN is a foundational number, and several next steps depend on it.

Open your business bank account

With your filed LLP registration and the EIN confirmation in hand, open a dedicated business bank account. Keeping partnership funds strictly separate from personal funds is one of the practices that keeps the LLP's liability shield intact. Most banks also want to see the partnership agreement, so have it ready.

Set up your Kentucky tax accounts

Use the EIN to register the partnership's Kentucky tax accounts with the Department of Revenue as needed — for the Limited Liability Entity Tax, for sales and use tax if you sell taxable goods or services, and for employer withholding if you'll have employees. The Business One Stop portal ties much of this together.

Keep the confirmation safe

Store the IRS EIN confirmation letter with your permanent partnership records. You'll reference the EIN constantly, and having the original confirmation resolves questions if a bank or agency ever asks you to verify it. If you lose the number, you can retrieve it from a prior tax filing or by contacting the IRS, but keeping the letter avoids the hassle.

A few recurring issues trip up new partnerships.

One EIN per entity

Your LLP gets one EIN, and it stays with the partnership. You don't need a new one just because you add a partner, change your address, or start operating under an assumed name. A new EIN is generally only needed if the underlying entity fundamentally changes — for example, if the partnership is dissolved and a genuinely new entity is formed.

Don't pay for the number itself

The EIN is free from the IRS. If you'd rather not handle the application, a filing service can do it as part of a package, but understand you're paying for the convenience and the correct handling, not for the number, which the IRS never charges for.

Foreign partners

If your LLP has partners without a US SSN or ITIN and none of the partners has one either, the online tool won't work for the responsible party, and you'll apply on Form SS-4 by fax or mail. Plan for the extra turnaround time so it doesn't hold up opening your bank account.