To open a US business bank account after incorporation, you’ll need to gather your formation documents and Employer Identification Number (EIN), and then submit an application with a traditional bank or an online-first provider. After verification and review, you’ll fund the account and be able to start operations. Startup bank accounts require incorporation first, since banks typically won’t open an account for an entity that doesn’t legally exist yet. Founders who line up their paperwork before beginning the application tend to move through underwriting fastest.

Over 531,000 business applications were filed in the US in August 2026 alone. Below, we’ll discuss how to open a business bank account online (or in person, depending on your corporate structure), including the documents you’ll need. We’ll also go over the obstacles international founders tend to run into during the process.

Key takeaways

• A business bank account preserves liability protection by creating a clear distinction between your personal and business assets. One is typically required before investors will complete due diligence.

• Banks and fintechs usually require your certificate of incorporation and EIN confirmation letter before they’ll review an application.

• Non-US founders face specific hurdles with Social Security numbers (SSNs), US addresses, and phone verification that domestic founders don’t encounter.

Why do you need a startup bank account after incorporation?

Once you’ve incorporated, a startup bank account helps prevent you from mixing personal and business finances, which can lead to serious legal problems. Courts can pierce the corporate veil when an owner pays business expenses from a personal account, and when that happens, the liability protection a corporation provides can disappear entirely. Investors often expect this financial separation, too. Before a seed round closes, lawyers and accountants typically ask for bank statements tied to the business itself, not a founder’s personal checking account.

What documents do you need to open a business bank account?

Banks need to see proof that your company exists and that you’re authorized to open an account for it.

Here are the documents to have ready when applying for a business bank account:

• Formation documents: Your certificate of incorporation, filed and stamped by the state where you incorporated.

• EIN confirmation letter: The CP 575 or 147C letter from the Internal Revenue Service (IRS), which proves your EIN is active and tied to your legal business name.

• Government-issued ID for signers: A passport or driver’s license for everyone with signing authority on the account, plus a Social Security number (SSN) or Individual Taxpayer Identification Number (ITIN) where the bank requires one.

• Ownership and governance documents: Company bylaws and a board resolution that show who’s authorized to open accounts on the company’s behalf.

• A US business address: A physical or registered agent address. PO Boxes are commonly rejected, as they are not considered physical addresses.

How do you open a business bank account step-by-step?

Generally, you can open a business bank account if you have the right documents ready. You might be able to complete the process online—especially if you’re banking with a digital-first provider—but eligibility often depends on corporate structure. For instance, privately held C-corporations or S-corporations with a single authorized representative can often apply online. Incorporated businesses with a more complex structure or multiple authorized representatives might need to apply in-person.

Assuming you’re eligible, here’s how to open a business bank account online.

Choose a bank or provider

Decide whether or not you’ll need access to physical branches, checks, and automated teller machines (ATMs). If not, a fintech account that handles day-to-day banking without a brick-and-mortar location could be the right fit for you.

Gather the required documents before starting an application

Providers might not let you submit a partial application and finish it later. Scan your incorporation documents, EIN letter, and any other documents your bank might require, and have them ready before you start.

Submit the application

You’ll need to include key information such as your business name, entity type, industry classification, and expected monthly transaction volume.

Complete identity verification for every authorized signer

You’ll probably need to upload a photo identification (ID) card and, for higher-risk industries, answer questions about the nature of your business.

Wait for compliance review

Banks run Know Your Business (KYB) and Know Your Customer (KYC) checks against your formation documents. Mismatched names or addresses can cause delays.

Fund the account and activate it

Providers might require an initial deposit. Some fintechs waive it, while traditional banks often set a minimum.

If you apply in-person, you’ll need to bring physical copies of all of your documents. Depending on your corporate structure, you might need to bring additional documents with you (e.g., IRS tax exemption proof for nonprofits). You might also need to bring certain individuals with you or provide their personal identification. Check with the bank you’ve chosen to learn about their specific requirements.

What challenges do non-US founders face when opening a business bank account?

International founders run into a specific set of obstacles that domestic founders don’t need to worry about. Some banks expect an SSN for at least one signer, something a nonresident founder might not have. While an Individual Taxpayer Identification Number (ITIN) might be accepted instead, not every bank offers that option, and it can take 9–11 weeks to get an ITIN when applying from overseas.

Banks also often expect a US address. A registered agent address can sometimes substitute for incorporation purposes, but a physical US business address separate from that agent is usually preferred for opening an account. Since some verification systems send codes by Short Message Service (SMS) to a US carrier only, founders also need a US phone number so they aren’t locked out. Certain traditional banks still require a signer to appear at a branch in person, which isn’t practical for international founders.

Having an EIN in place before applying can help solve some of these issues. The IRS issues EINs to foreign founders without an SSN using Form SS-4 and a phone, fax, or mail application. That EIN becomes the anchor for everything else, including tax filings and account applications.

How can incorporation platforms simplify opening a business bank account?

In the past, incorporation and banking were entirely separate processes, run by different vendors with no data shared between them. Services built specifically for startup formation have closed that gap. With the right platform, it’s now possible to incorporate a company, open a business bank account, and start processing transactions in a matter of days. Stripe Atlas, for instance, helps founders who want to incorporate a business in Delaware.

How Stripe Atlas can help

Stripe Atlas handles everything you need to legally launch your company—incorporation, employer identification number (EIN), equity setup, and tax filings—so you can fundraise, open a bank account, and start accepting payments in as little as two business days, from anywhere in the world.

Join 100,000+ startups incorporated using Atlas, including startups backed by top investors like Y Combinator, a16z, and General Catalyst.

Get started in minutes with Atlas

The application takes under 10 minutes. You’ll choose your company structure, confirm your name is available, add up to four cofounders, set your equity split, and e-sign. Then Atlas takes it from there, including notifying cofounders to sign their documents electronically.

Banking and payments before your EIN arrives

Atlas files your EIN application automatically after incorporation. You don’t have to wait—Atlas enables pre-EIN payments and banking so you can start accepting payments and making transactions right away. US founders with a Social Security number are typically eligible for expedited IRS processing.

Automatic 83(b) tax election filing

Atlas files your 83(b) election for you—US and non-US founders alike—with US Postal Service (USPS) certified mail and tracking to reduce personal income taxes. You’ll get a signed 83(b) election and proof of filing directly in your Stripe Dashboard, with certified mail confirmation.

World-class company legal documents

Atlas provides all the legal documents you need to start running your company, drafted by Cooley, one of the world’s leading venture capital law firms, and stores them directly in your Stripe Dashboard. These documents are designed to help you fundraise immediately and ensure your company is legally protected, covering aspects like ownership structure, equity distribution, and tax compliance.

$2,500 in Stripe credits, plus $50K+ in partner discounts

Atlas startups get $2,500 in Stripe product credits for their first year, plus $50,000+ in discounts on essential tools—Mercury, AWS, Carta, Xero, Perplexity, and more. Delaware registered agent service is also included free for your first year.

Learn more about how Atlas can help you set up your new business quickly and easily, and get started today.

FAQs about opening a startup bank account in the US