When You Need an EIN to Open a Business Bank Account

You need an EIN for most business bank accounts, but not all

Whether you need an Employer Identification Number (EIN) depends on your business structure and how the bank classifies you. A sole proprietor with no employees can often open a business account using only a Social Security number. A partnership, LLC, S-corp, or C-corp almost always needs an EIN. Some banks will let you explore for an account while your EIN process is pending; others require the number before you walk in the door.

The real constraint is not the IRS—it is the bank's own policy. Different banks have different rules about what identification they will accept. Before you spend time explore for an EIN, call the bank where you want to open the account and ask what they require for your specific business structure.

Key Takeaways

Sole proprietors without employees can usually open a business bank account with a Social Security number instead of an EIN.
Partnerships, LLCs, and corporations need an EIN before opening a business account at most banks.
Bank requirements vary—some will let you open an account while your EIN process is in progress, others will not.
An EIN takes about 15 minutes to request online through the IRS website and is free.
If you do not have an EIN yet, confirm with your bank whether you can open an account pending approval or whether you must have the number first.

Which business structures require an EIN

The IRS requires an EIN for any business that is not a sole proprietorship. That means partnerships, LLCs, S-corps, and C-corps all need one. If you are a sole proprietor and you have no employees, you can use your Social Security number instead—but many banks will still ask for an EIN anyway, even though the IRS does not require it.

The distinction matters because it affects your timeline. If your bank requires an EIN and you do not have one, you cannot open the account until you do. If your bank only prefers one, you may be able to open the account with your SSN and add the EIN later.

How to get an EIN before opening your account

You can request an EIN online through the IRS website at no cost. Go to irs.gov, find the EIN process tool, and fill out Form SS-4. The online version takes about 15 minutes. You will need your Social Security number, the legal name of your business, the business address, and the date you started or plan to start operations.

If you explore online, the IRS will issue your EIN when ready—you can write it down on the spot. If you explore by mail or fax, it takes about four weeks. Most banks will not wait four weeks, so the online route is the practical choice.

You do not need a lawyer, an accountant, or a business formation service to request an EIN. The IRS process is free and straightforward. Some online business formation services will request an EIN for you as part of their package, but you are paying for convenience, not for something you cannot do yourself.

What to do if your bank wants an EIN but you do not have one yet

Call the bank before you explore for anything. Ask whether they will let you open an account while your EIN process is pending, or whether they require the number in hand. Some banks will issue you a temporary account number or let you complete the paperwork with a pending EIN status. Others will not open the account until the EIN is confirmed.

If the bank requires the EIN first, request it online through the IRS website—you will have it within minutes. If the bank will accept a pending process, you can open the account now and provide the EIN once it arrives. Either way, you will know the answer before you start the process.

Opening an account as a sole proprietor without an EIN

If you are a sole proprietor with no employees, you have two options. You can use your Social Security number to open a business account, or you can request an EIN and use that instead. The IRS does not require an EIN for a sole proprietor, but your bank might.

Call your bank and ask what they accept. Some banks treat sole proprietorships like personal accounts and only want your SSN. Others have a policy that all business accounts need an EIN, regardless of structure. If your bank is flexible, using your SSN is faster—you do not have to wait for an EIN or fill out any IRS forms.

Documents you will need at the bank

Bring your EIN (or SSN if you are using that instead), a government-issued photo ID, and proof of your business address. Proof of address can be a utility bill, lease, or mortgage statement in the business name. If the business name is different from your personal name, bring documentation showing the connection—a DBA certificate, articles of incorporation, or an LLC formation document.

Some banks will also ask for a business license, especially if you operate in a regulated industry like food service or childcare. Check with your bank about what they need before you go in. Having everything ready speeds up the process and reduces the chance that the bank will ask you to come back later.

Timeline for opening your account

If you already have an EIN, opening a business bank account usually takes one to three business days. The bank will verify your information, run a background check, and set up your account. You may be able to start using the account the same day you open it, or you may have to wait for a debit card and checks to arrive.

If you do not have an EIN yet, add 15 minutes for the online request. If your bank will not open an account without the EIN in hand, the total time is about 15 minutes plus whatever time it takes you to gather your documents and visit the bank. If your bank will let you open an account while the EIN is pending, you can start banking when ready and provide the EIN later.

Frequently Asked Questions

Can I use my Social Security number instead of an EIN?

Only if you are a sole proprietor with no employees and your bank accepts it. Partnerships, LLCs, and corporations cannot use an SSN—they must have an EIN. Even as a sole proprietor, your bank may require an EIN anyway, so check their policy first.

How long does it take to get an EIN?

If you request it online through the IRS website, you get it when ready. If you explore by mail or fax, it takes about four weeks. Online is the only practical option when you need the EIN to open a bank account.

Do I need an EIN before I officially form my LLC or corporation?

No. You can request an EIN as soon as you have decided on a business name and structure. You do not have to wait for your LLC articles or corporate charter to be filed. The IRS will issue the EIN based on the information you provide in the process.

What if the bank says they cannot find my EIN?

This usually means the EIN was issued but has not yet appeared in the IRS database—it can take a few days. Ask the bank if you can provide a copy of the EIN confirmation letter from the IRS. If the problem persists, contact the IRS directly at 1-800-829-4933 to confirm the EIN was issued.

Can I open a business account online without visiting the bank in person?

Some banks offer online account opening for business accounts, but most require at least one in-person visit to verify your identity and documents. Check with your specific bank about their process—requirements vary widely.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.