5 Essential Certificates You Need to Know Before Registering a Company in the U.S. - Are You Ready?

Registering a Company in the United States Five Essential Certificates for Legal and Successful Operations

Registering a company in the United States is a significant step for many entrepreneurs aiming to go global. However, while many focus solely on the basic procedures of company formation, they often overlook the essential certificates and compliance requirements necessary for ongoing operations. These documents not only ensure legal operation but also build customer trust, enable participation in procurement, and support business expansion.

Below are five must-know certificates for registering a company in the U.S., helping you build a solid foundation for compliant and sustainable growth.

1. Federal Tax ID EIN - The Company’s Identification Number

The Employer Identification Number EIN, issued by the Internal Revenue Service IRS, is a unique identifier for businesses, similar to an individual’s Social Security Number SSN. Most businesses are required to obtain an EIN, regardless of whether they have employees. This number is essential for opening a corporate bank account, filing taxes, and applying for business licenses.

According to the IRS website, the EIN application process was further streamlined in 2025, allowing most businesses to complete the process online within minutes. Notably, foreign businesses registering in the U.S. can also apply for an EIN without an SSN by completing Form SS-4.

2. State Business License - Compliance with Local Regulations

The U.S. operates under a federal system where both federal and state governments have legal authority. After registering a company at the federal level, businesses must also comply with state and local licensing requirements. Each state has different rules, and some require industry-specific licenses before engaging in certain activities, such as food service, construction, or healthcare.

For example, California optimized its small business licensing process in 2025 by launching a one-stop business permit portal to streamline license applications. In contrast, New York may require background checks and on-site inspections for certain industries before issuing a license. Understanding your state’s licensing requirements before starting operations is crucial to avoid penalties or shutdowns due to unlicensed activity.

3. Sales Tax Permit - For Businesses Selling Goods or Taxable Services

If your business plans to sell goods or provide taxable services in the U.S., you typically need to obtain a Sales Tax Permit also known as Sales Tax Registration from your state. This certificate allows you to legally collect and remit sales tax to the state.

According to a 2025 report by the Tax Foundation, 45 U.S. states impose sales taxes, with rates ranging from 2% to 10%. Some states, like Oregon and New Hampshire, do not impose a state-level sales tax at all. Additionally, certain cities and counties may impose local sales taxes. Once you have a Sales Tax Permit, you are required to file sales tax returns and make timely payments. Failure to comply can lead to serious legal consequences.

4. Professional License - Required for Regulated Professions

Certain professions, such as law, accounting, architecture, real estate brokerage, and healthcare, require individuals to obtain professional licenses to legally operate in the U.S. These licenses are typically issued by state licensing boards and often involve passing professional exams and undergoing background checks.

For example, in 2025, the National Association of State Boards of Accountancy NASBA updated its procedures for international accounting professionals, allowing more foreign applicants to take the Uniform CPA Exam remotely under proctored conditions. This change has made it easier for international entrepreneurs to enter the U.S. professional services market.

If you plan to open a law firm, accounting firm, or medical clinic in the U.S., it’s advisable to research the licensing requirements of your target state early and prepare the necessary academic credentials and exam materials.

5. DBA Certificate Doing Business As - Registering a Trade Name

A DBA Doing Business As certificate, also known as a fictitious name or trade name registration, is required when a business operates under a name different from its officially registered legal name. For instance, if your officially registered company is ABC Holdings LLC but you wish to operate as GreenTech Solutions, you must file for a DBA certificate.

The DBA registration process is usually handled at the county or city level and varies by state. In 2025, states like Texas tightened DBA regulations, requiring businesses to complete this registration before beginning operations, with the goal of increasing business transparency and protecting consumer rights.

Having a DBA certificate not only supports brand promotion but also prevents others from using the same name, enhancing your company’s visibility and legal protection in the marketplace.

Conclusion

Registering a company in the U.S. involves more than just filing paperwork-it is a comprehensive compliance process. From the EIN to the Sales Tax Permit, from business licenses to professional certifications, each document plays a critical role in ensuring your business operates legally and responsibly.

As U.S. states continue to improve their business environments, more international entrepreneurs are looking to establish themselves in the country. However, only by truly understanding and obtaining these key certificates can you ensure that your business grows steadily, compliantly, and ready to seize new opportunities in the U.S. market.