How to Get an EIN Number for Your Kentucky Business (Free in 10 Minutes, 2026)

Apply for a free EIN online through the IRS website in 10 to 15 minutes if you have a Social Security Number. The EIN appears immediately on screen. Horizon Launch files your EIN as part of our 14-day Kentucky business launch package — $1,497 setup, no separate fee.

What do I need before applying for an EIN?

You need five items in hand before opening the IRS EIN application.

• Your legal business name — exactly as filed with the Kentucky Secretary of State on your Articles of Organization
• Your business address — physical address, not a PO box for most entity types. A Kentucky registered agent address works.
• The responsible party's name and SSN or ITIN — this is the person ultimately controlling the entity, typically the owner or managing member
• The entity type and member count — LLC single-member, LLC multi-member, corporation, partnership, sole proprietorship, etc.
• The reason for applying — typically "Started a new business" or "Banking purposes"

Once these five items are gathered, the rest of the IRS form is straightforward dropdowns and yes/no questions.

How do I get an EIN online step-by-step?

Step 1: Go to the official IRS EIN application page

The only legitimate online EIN application is on IRS.gov. Bookmark this URL. Search results often surface paid third-party services first — those are not the IRS and are charging you for something the IRS provides free.

Step 2: Confirm you are eligible to use the online application

You must have a valid SSN, ITIN, or existing EIN for the responsible party. Your principal business must be in the US. You can only apply for one EIN per responsible party per day.

Step 3: Select the entity type

For a Kentucky LLC, select "Limited Liability Company." The form then asks about member count. Single-member LLCs are taxed as sole proprietorships by default; multi-member LLCs are taxed as partnerships by default. Either default can be changed later with Form 8832 or Form 2553.

Step 4: Confirm where the business is physically located

Kentucky. The form does not ask for the registered agent address; it asks for the physical location where business activity happens. If you operate from home in Hardin County, that home address is the answer.

Step 5: Provide the responsible party information

The IRS defines the responsible party as the person who controls, manages, or directs the entity and the disposition of its funds and assets. For a single-member LLC, that is the owner. For a multi-member LLC, that is typically the managing member.

Step 6: Answer the questions about your business activity

The form asks the principal activity (construction, retail, professional services, etc.), specific products or services, and whether you expect to hire employees in the next 12 months. None of these answers are binding — they are statistical for the IRS.

Step 7: Choose how you want to receive the confirmation letter

Choose "Receive letter online" to get the CP 575 confirmation immediately as a PDF. Choose "Receive letter by mail" only if you cannot reliably download a PDF — the mailed letter takes 4 to 5 weeks.

Step 8: Submit and save your EIN immediately

The EIN appears on screen as soon as you submit. Write it down. Download the CP 575 confirmation letter PDF. Save both in a secure location. The IRS does not let you retrieve the CP 575 online after that session — if you lose it, you have to call the IRS Business and Specialty Tax Line at 800-829-4933 and wait on hold.

What does the IRS actually do with your EIN application?

The IRS online EIN process is real-time during business hours and completely automated for most applicants. Understanding the path it follows explains why responses are instant for SSN holders and slow for foreign applicants.

Online applications submitted between 7am and 10pm ET Monday-Friday route through the IRS EIN Assistant. The system runs three checks against existing IRS records: the responsible party's SSN/ITIN validity, prior EIN issuance for the same responsible party that day (the IRS limits one EIN per responsible party per day), and the entity name uniqueness within the IRS database. Pass all three and the EIN appears on screen with the downloadable CP 575 confirmation letter.

Paper and fax applications via Form SS-4 route to the IRS Cincinnati processing center for foreign applicants and to local IRS service centers for domestic applicants. Foreign applicants without an SSN, ITIN, or existing EIN must use this slower path because the online system cannot verify their identity. Processing times are documented in the Form SS-4 instructions: 4 business days for fax response, 4 to 8 weeks for mail response.

The CP 575 confirmation letter is the official IRS document proving your EIN. Banks, payroll services, and major B2B vendors require it. The IRS only issues the CP 575 once. If you lose it, you can only receive a replacement letter (CP 575-A) by calling the IRS Business and Specialty Tax Line at 800-829-4933, which has long hold times. Download and save the CP 575 the moment it appears in the online application.

The EIN itself never expires and never changes for the life of the entity. Even if the business closes, the EIN is permanently associated with the entity and cannot be reused for a different business. Source: IRS guidance on EIN account closure.

Three situations require a brand new EIN even if your existing business has one already. Per IRS guidance on EIN replacement:

• You change entity type (sole proprietorship to LLC, LLC to corporation, single-member LLC electing partnership taxation)
• You become a subsidiary of a corporation
• You change ownership structure in ways that change federal tax treatment

You do NOT need a new EIN when changing the business name only, moving the business to a new address, or adding additional owners to a multi-member LLC. Source: IRS business name change guidance.

Save the CP 575 confirmation letter in three separate places (cloud storage, local hard drive, encrypted backup). Banks, payroll providers, and major B2B vendors will request it at various points over the life of the business. The IRS will only issue a replacement letter (CP 575-A) by phone, and the call typically takes 30-60 minutes on hold per the IRS telephone assistance hours.

What are the most common mistakes when applying for an EIN?

• Paying a third-party site for the EIN. Several sites mimic IRS branding and charge $50 to $300. The actual IRS application is free. Always start at IRS.gov.
• Applying before the LLC is approved. If the LLC name changes during state review, the EIN gets issued under the wrong name and you have to correct it.
• Choosing the wrong entity type. Selecting "sole proprietorship" when you intended an LLC creates a mismatch the IRS will catch on your first tax return. Pick the actual entity type you formed.
• Listing the wrong responsible party. The responsible party must be a real person with control over the entity. Listing a registered agent or attorney here is wrong and creates audit risk.
• Not saving the CP 575 letter. You lose access to it after the session. Banks and vendors will ask for it. Download it the moment it appears.
• Applying after 7pm Eastern Time. The online application is only available Monday through Friday, 7am to 10pm ET. Plan accordingly.

When should I hire someone to file my EIN for me?

For most Kentucky LLC owners, doing the EIN application yourself is the right choice — it takes 10 to 15 minutes and the IRS provides it free. Pay for done-for-you EIN filing in three scenarios.

You are forming a Kentucky LLC and want a single team handling every infrastructure step. Launch Starter includes EIN filing, registered agent, operating agreement, domain, website, business phone, branded email, Google Business Profile, citations, and Stripe Connect for $1,497 plus $97/month. The EIN is one of 11 line items, not a standalone purchase.

You are a foreign applicant without an SSN or ITIN. The online application is unavailable to you. The paper or fax Form SS-4 process is more complex and benefits from someone who has done it before.

You have already tried and got stuck. Several common errors (wrong responsible party, wrong entity type, name mismatch) require IRS phone calls to correct. Done-for-you avoids the errors in the first place.

What other questions do Kentucky business owners ask about EINs?

Five additional questions answered in the structured FAQ section above: EIN cost, applying before LLC formation, online processing time, no-SSN applicants, and name-change rules.