Getting an EIN for Your Florida LLC — The Complete Guide

An Employer Identification Number, or EIN, is a nine-digit number in the format XX-XXXXXXX issued by the Internal Revenue Service. It identifies your business entity for federal tax purposes — the business equivalent of a Social Security number. Once issued, the EIN belongs to your entity permanently; it doesn't expire and it's never reassigned to another taxpayer.

The name "Employer Identification Number" can be misleading — you don't need to have employees to need an EIN. The EIN is used any time the IRS needs to identify a business entity, regardless of whether the entity has staff.

What you use an EIN for

• Opening a business bank account: Most banks and credit unions require an EIN before they'll open a business checking or savings account in the LLC's name
• Federal tax filings: Multi-member LLCs file a partnership return (Form 1065) and need an EIN. S-Corp-elected LLCs file Form 1120-S and need an EIN.
• Hiring employees: You need an EIN to set up payroll, file employment tax returns, and issue W-2s
• Business credit: Applying for a business credit card or small business loan typically requires an EIN
• Vendor and contractor relationships: Many vendors and clients require your EIN for their records when you're a business payee — you'll fill out Form W-9 with your EIN
• Applying for business licenses: Some license applications require an EIN

The EIN is free

The IRS issues EINs at no charge. You apply directly through IRS.gov. There is no government application fee. Some formation services or third-party websites charge to apply for an EIN on your behalf — you're paying for their service, not the EIN itself. If cost is a concern, apply directly.

Whether you need an EIN depends on your LLC's structure and how you plan to operate. The rules are different for single-member and multi-member LLCs.

Multi-member LLCs

A multi-member LLC is taxed as a partnership by default. It must file Form 1065 with the IRS, and it must have an EIN to do so. There is no workaround here — if your LLC has two or more members, you need an EIN before filing any federal tax return.

Single-member LLCs

A single-member LLC is a disregarded entity for federal tax purposes by default — the IRS treats it as if it doesn't exist separately from its owner. The owner reports business income on Schedule C of their personal return using their own Social Security number.

This means a single-member LLC with no employees can technically operate without an EIN, using the owner's SSN for tax purposes. But in practice, most advisors recommend getting an EIN anyway:

• Banks require it: Most banks won't open a business account without an EIN, regardless of your LLC's structure
• Privacy: Using your SSN on vendor W-9 forms and business contracts puts your Social Security number in many more hands than you'd want
• Simplicity: If you ever add an employee or elect S-Corp treatment, you'll need an EIN anyway — getting it at formation is easier than going back to do it later
• Professionalism: An EIN on your invoices and W-9 forms looks more professional than a personal SSN

LLCs with employees

Any LLC that has employees — including single-member LLCs — must have an EIN. Payroll taxes are filed under the EIN, W-2s are issued under the EIN, and employment tax accounts at the IRS are tied to the EIN.

For most Florida LLC owners, the online EIN application through IRS.gov is the right choice. It's fast, free, and produces an EIN immediately.

Requirements for the online application

• You must be a US resident or citizen with a valid Social Security number or Individual Taxpayer Identification Number (ITIN)
• The responsible party (the person applying on behalf of the LLC) must have a US taxpayer identification number
• The application must be completed in a single session — the IRS system times out and doesn't save progress

The application process

1. Go to IRS.gov and search for "EIN online application" or navigate to the EIN Assistant
2. Select "Limited Liability Company" as the entity type
3. Specify the number of members and the state of formation (Florida)
4. Provide the LLC's legal name, address, and the responsible party's information
5. Answer a few questions about the reason for applying and the LLC's activities
6. Review and submit

The IRS issues the EIN immediately upon submission and displays it on a confirmation screen. Print or save the confirmation — this is your EIN assignment letter, and you'll need it when opening bank accounts and for future tax filings. The IRS also mails a paper confirmation letter (CP575) to the address you provided, which typically arrives within four to five weeks.

What is the "responsible party"?

The responsible party is the person who owns or controls the LLC — in most cases, the primary member. For a single-member LLC, that's the owner. For a multi-member LLC, it's typically one member designated to receive IRS correspondence. The responsible party's SSN or ITIN is used in the EIN application.

If you don't have a US Social Security number or ITIN, you cannot use the online EIN application. Non-US residents must apply using Form SS-4, either by fax or by mail.

Form SS-4 by fax

Fax is faster than mail for international applicants. Fax Form SS-4 to the IRS at the international fax number listed in the SS-4 instructions. The IRS processes fax applications and calls back to provide the EIN, typically within four business days. You then receive a written confirmation by mail.

Form SS-4 by mail

Mail takes longer — the IRS typically processes mailed SS-4 applications within four to five weeks. This is the slowest option and should be used only if fax is not available.

Getting an ITIN first

If you're a non-US resident planning to own a US LLC long-term, you might consider applying for an Individual Taxpayer Identification Number (ITIN) through Form W-7. An ITIN allows you to file US tax returns and may simplify some of the ongoing tax administration. The ITIN application process takes several weeks.

Third-party designee

If you need someone else to receive the EIN on your behalf — for example, a US-based accountant or attorney — you can designate them as a third-party designee on Form SS-4. They receive the EIN and provide it to you.

An EIN issued to an LLC stays with that LLC. But there are circumstances where you'd need a different EIN or where the existing EIN can't follow you.

Circumstances that require a new EIN

• Converting to a different entity type: If your LLC converts to a corporation, the corporation needs its own EIN — the LLC's EIN doesn't transfer
• Adding or removing members that changes the entity type: If a single-member LLC becomes a multi-member LLC, the IRS may require a new EIN depending on how the change is structured; this is worth confirming with a tax advisor
• Inheriting a business: If you acquire a business and form a new LLC to operate it, the new LLC needs its own EIN regardless of what the prior owner's EIN was

Circumstances that don't require a new EIN

• Changing the LLC's name: Update the name with the IRS using Form 8822-B; the EIN stays the same
• Changing the LLC's address: Update the address with Form 8822-B; the EIN stays the same
• Changing members within the same entity type: If members change but the LLC remains a multi-member LLC, the EIN typically stays the same
• Changing registered agents or management structure: These are state-level changes that don't affect the IRS EIN

The EIN application is simple, but these errors come up often enough to be worth flagging.

Applying before your LLC exists

The EIN application asks for your LLC's name and your state of formation. If you apply before the Articles of Organization are filed with the Division of Corporations, the LLC doesn't technically exist yet. Most advisors recommend forming the LLC first, then applying for the EIN. Banks will sometimes want to see the filed Articles alongside the EIN confirmation when opening an account.

Letting the online session time out

The IRS online EIN application doesn't save progress. If the session times out before you finish, you may end up with a partial application or need to start over. Have all your information ready before you begin: LLC name, principal address, organizer or responsible party's SSN, and a description of your business activities.

Paying a third party for EIN services

The EIN is free from the IRS. You don't need to pay anyone to obtain one. If a formation service is charging separately for "EIN filing," understand that you're paying for their administrative service, not the EIN itself. You can apply directly at IRS.gov for free.

Using the wrong EIN on tax returns

Your EIN is unique to your entity. Make sure you're using the correct EIN on every return — not a prior business's EIN, not your personal SSN unless you're a disregarded-entity single-member LLC using the SSN option. Mismatched EINs on tax returns create notices and delays.

Not saving the confirmation

When the online application completes, the IRS displays the EIN on a confirmation screen. Print or save it immediately — this is your EIN assignment letter. If you close the window, you'll need to wait for the paper CP575 letter to arrive, which takes several weeks. The IRS also won't email you the EIN; the online session is your only immediate access to the confirmation.