You can open a business bank account without an EIN, but the path depends on your business structure and the bank you choose
An Employer Identification Number (EIN) is a nine-digit identifier the IRS assigns to businesses. Many banks ask for one when you open a business account, but not all require it before you start. If you do not have an EIN yet, you can use your Social Security Number instead at some banks, or you can obtain an EIN first—which takes about 15 minutes online and costs nothing.
The real constraint is not whether an EIN exists, but what your business structure is. A sole proprietorship (you running the business alone) can almost always use a Social Security Number. A partnership, LLC, or corporation typically needs an EIN, though some banks will let you apply for one during the account-opening process itself.
Key Takeaways
- Sole proprietors can open a business bank account using a Social Security Number instead of an EIN at most banks.
- Partnerships, LLCs, and corporations usually need an EIN, but some banks will help you obtain one as part of opening the account.
- You can get an EIN free from the IRS online in about 15 minutes, or by phone, mail, or fax if you prefer.
- Different banks have different requirements—calling ahead to ask what documents they need prevents a wasted trip.
- If you are a sole proprietor using your Social Security Number, the bank may still ask you to register a business name with your state first.
When you can use a Social Security Number instead
If you are a sole proprietor—meaning you own and run the business by yourself with no partners or formal business entity—most banks will let you open a business account using your Social Security Number. You will still need to show that you are operating under a business name (if you use one), but you do not need a separate tax ID.
Some banks ask you to register your business name with your state or county before opening the account. This is usually a simple filing with your Secretary of State's office or county clerk, and it costs between $10 and $100 depending on where you live. A few banks skip this step and will open the account on your Social Security Number alone, so it is worth calling first.
Even as a sole proprietor, you may want to get an EIN anyway. It keeps your personal and business finances more clearly separated on tax forms, and it protects your Social Security Number from being shared with vendors and clients. The choice is yours.
When you need an EIN before opening the account
If your business is structured as a partnership, LLC, S-corporation, or C-corporation, you need an EIN. These are formal business entities that exist separately from you as an individual, and the IRS requires them to have their own tax ID.
Some banks will not open an account for these structures without an EIN already in hand. Others will let you apply for one during the account-opening appointment, or they will give you a temporary account number while your EIN application is being processed. Call the bank's business banking line before you go in and ask what they need.
If you have already formed your LLC or corporation, you should have received an EIN notice (Form SS-4) from the IRS. If you have not, you can obtain one the same day you open the account.
How to get an EIN if you do not have one
The fastest way is online through the IRS website. Go to irs.gov, search for "Apply for an EIN", and use their online form. You will answer questions about your business structure, location, and what you do. The process takes about 15 minutes, and you receive your EIN immediately on screen. You can print it or write it down right away.
If you cannot use the online form, you can call the IRS Business and Specialty Tax Line at 1-800-829-4933. They will ask you the same questions and issue an EIN over the phone. You can also mail Form SS-4 to the IRS, though this takes several weeks.
You do not need to have filed any paperwork with your state yet to get an EIN. The IRS will issue one based on your business structure alone. However, if you have formed an LLC or corporation, you should have already filed those formation documents with your state Secretary of State's office.
What documents to bring to the bank
Bring a government-issued photo ID (driver's license or passport) and your Social Security Number or EIN. If you are using a business name that is different from your legal name, bring proof that you have registered it—usually a certificate from your state or county, or a DBA (Doing Business As) filing.
If your business is an LLC, corporation, or partnership, bring a copy of your formation documents (the Articles of Organization, Articles of Incorporation, or Partnership Agreement). The bank may ask to see these to confirm the business structure and who is authorized to sign on the account.
Some banks also ask for a business license or a recent utility bill showing your business address. Call ahead to ask what the specific bank requires, because requirements vary.
Why banks ask for an EIN in the first place
Banks need a way to identify your business for tax reporting and fraud prevention. An EIN serves that purpose for formal business entities. For sole proprietors, your Social Security Number does the same job—it ties the account to you as the owner.
Banks also use the EIN or Social Security Number to check whether you have unpaid tax debts or other financial problems that might make you a higher-risk customer. This is a standard background check, not a judgment about your creditworthiness.
What happens if you open the account without an EIN and get one later
If you open a sole proprietor account using your Social Security Number and later decide to get an EIN, you can usually update the account information with the bank. Call your business banking representative and ask them to add the EIN to your account. This does not close the account or require you to move your money.
If you later convert your sole proprietorship to an LLC or corporation, you will need a new account in the business entity's name with its EIN. The old account will remain open under your Social Security Number unless you close it.
Frequently Asked Questions
Can I open a business account the same day I get an EIN?
Yes. If you get your EIN online through the IRS website, you have it immediately and can go to the bank the same day. If you call the IRS, you also get the number over the phone. Some banks will open the account on the spot once you have the EIN in hand.
Do I need to form an LLC before I open a business bank account?
No. You can open a sole proprietor account using just your Social Security Number without forming any business entity. However, if you want the legal protection that an LLC provides, you will need to form one with your state first, and then get an EIN before opening the account.
What if the bank says they will not open an account without an EIN?
Get an EIN—it is free and takes 15 minutes online. If your business structure requires one anyway (LLC, partnership, corporation), you will need it eventually. If you are a sole proprietor and the bank insists, you can try a different bank, or you can get the EIN to move forward.
Can I use a temporary EIN while I wait for the official one?
No. The IRS does not issue temporary EINs. When you apply online or by phone, you receive the actual EIN immediately. If you apply by mail, you wait for the official letter, but there is no temporary number in the meantime.
Do I need a business license to open a business bank account?
Not always. A business license is required by some cities and states, but not all, and requirements vary by industry. Some banks ask to see one; others do not. Call the bank and your local city or county clerk to find out what applies to your situation.