Knowing what to do after forming a US company is just as important as the formation itself. Many Korean founders celebrate when their LLC or corporation is approved by the state, then pause, unsure of the next steps. The truth is that filing your formation documents is only the beginning. To actually operate, get paid, and stay compliant, you need to complete several critical tasks quickly. This guide covers the five most important things to do after forming a US company so your business starts on solid footing.
1. Get Your EIN from the IRS
Your first priority is obtaining an Employer Identification Number (EIN). This nine-digit federal tax ID is required to open a bank account, file taxes, hire employees, and register with payment processors and marketplaces. Without it, your company cannot function financially.
US founders with an SSN can apply online for near-instant issuance. Foreign founders without an SSN or ITIN apply using Form SS-4 by fax, mail, or phone, writing Foreign in the responsible party’s tax ID field. Fax processing typically takes roughly one to four weeks, so start early. Once issued, store your EIN confirmation letter carefully because you will use it constantly.
2. Open a US Business Bank Account
A dedicated business bank account is essential. Mixing personal and business funds can undermine the liability protection your entity provides, complicate your taxes, and weaken future credit-building efforts. Keeping finances separate is one of the most important disciplines for any US company.
To open an account, you generally need:
- Your formation documents, such as the certificate of formation or articles of organization.
- Your EIN confirmation letter.
- Your operating agreement or bylaws.
- Identification for the owners or authorized signers.
Foreign founders sometimes face challenges opening accounts remotely. Some traditional banks require an in-person visit, while certain business banking platforms designed for international founders allow remote onboarding. Research your options before you apply so you know the requirements.
3. Understand and Register for Taxes
Taxes for a US company operate on multiple levels, and understanding them early prevents costly surprises. Depending on your structure and activities, you may face:
- Federal taxes. How your business is taxed depends on its entity type. An LLC may be taxed as a pass-through entity, while a C corporation pays corporate income tax.
- State taxes. Some states have income or franchise taxes, and some have none. Requirements depend on where you formed and where you do business.
- Sales tax. If you sell taxable goods, you may need to collect and remit sales tax in states where you have nexus, meaning a sufficient connection such as physical presence or significant sales volume.
Foreign-owned single-member LLCs have special federal reporting obligations, including forms that must be filed even if the company owes no tax. Missing these can lead to significant penalties, so it is wise to consult a tax professional familiar with international founders.
4. Set Up Compliance and Stay in Good Standing
Forming your company creates ongoing obligations that must be maintained to keep your entity active and protected. Falling out of good standing can lead to fines, loss of liability protection, or even administrative dissolution.
Key compliance tasks include:
- Maintain a registered agent. Most states require a registered agent with a physical address in the state to receive official documents.
- File annual or biennial reports. Many states require periodic reports and fees to keep your company active.
- Pay franchise taxes where applicable. Some states charge these regardless of profit.
- Keep records organized. Maintain your formation documents, operating agreement, and financial records in one place.
Mark all deadlines on a calendar. Compliance is easy to handle when planned and expensive to fix when neglected.
5. Set Up Payment Processing and Accounting
To actually collect revenue, you need payment infrastructure. Depending on your business model, this might include a payment processor such as Stripe or PayPal, a merchant account, or marketplace seller accounts like Amazon or Shopify. Most of these require your EIN and business bank account, which is why the earlier steps come first.
At the same time, set up bookkeeping from day one. Clean financial records make tax filing far easier, support future financing applications, and give you a clear view of your company’s health. Whether you use accounting software or hire a bookkeeper, establishing this system early prevents a stressful scramble at tax time.
Putting It All Together
These five steps, obtaining your EIN, opening a bank account, understanding taxes, maintaining compliance, and setting up payments, transform a newly formed entity into a functioning business. Complete them in order and you will avoid the most common pitfalls that delay foreign founders. Rushing to sell before the foundation is ready often creates problems that take far longer to unwind.
This article offers general information and is not legal or tax advice. Requirements vary by state and situation, so consult a qualified professional for guidance specific to your company.
Frequently Asked Questions
How soon should I complete these steps after forming my company?
Start immediately. Applying for your EIN first is important because banking, taxes, and payment processing all depend on it, and processing can take several weeks for foreign founders. The sooner you begin, the sooner your business can operate.
Do I need a US address to open a business bank account?
Requirements vary by bank. Some traditional banks require a US address and an in-person visit, while certain banking platforms built for international founders allow remote onboarding with your formation documents and EIN. Research each provider’s rules before applying.
What happens if I skip the compliance steps?
Neglecting annual reports, franchise taxes, or your registered agent can result in penalties, loss of good standing, and even administrative dissolution of your company. Staying compliant is far cheaper and simpler than restoring a company that has fallen behind.
Getting these first steps right sets the tone for your entire US venture. If you would like experienced support handling everything that comes after forming a US company, we invite you to a free consultation with USdongsan, where we guide Korean founders from formation through full operation.
