Disclaimer: We are a private service provider and are NOT affiliated with the Internal Revenue Service (IRS). You can apply for an Employer Identification Number (EIN) directly for FREE on the official IRS website. We charge a fee for assistance, document preparation, and expedited processing services.

Quick Guide: How to Get an EIN Number in St. Louis, Missouri

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Quick Guide: How to Get an EIN Number in St. Louis, Missouri

Are you starting a business or hiring employees in St. Louis, Missouri? If so, you’ll likely need an Employer Identification Number (EIN) to get up and running. This unique number is vital for tax purposes and helps you establish a professional presence in the Gateway City. Let’s walk through exactly how to get an EIN number in St. Louis, with tips tailored for local entrepreneurs.

What Exactly Is an EIN and Why Is It Important?

An EIN, or Employer Identification Number, is a nine-digit identifier issued by the IRS to businesses and other entities for tax administration. Think of it as a Social Security number for your company. Whether you’re forming an LLC in the Central West End, opening a coffee shop in Soulard, or starting a nonprofit in Clayton, an EIN is a must-have for St. Louis business owners who plan to hire employees, open business bank accounts, or file certain federal and state taxes.

Doing Business in St. Louis: Local Context

St. Louis, Missouri is known for its vibrant startup scene, historic neighborhoods, and supportive business community. From tech startups in Cortex to family-run stores on Cherokee Street, businesses here benefit from a strategic location and access to resources like the St. Louis Economic Development Partnership. Securing your EIN is often the first step to accessing local business incentives, applying for city permits, and getting listed with Missouri’s Secretary of State.

Who Needs an EIN in St. Louis? Eligibility Criteria Explained

Most businesses operating in St. Louis will need to get an EIN number. Here’s who typically requires one:

  • LLCs, corporations, and partnerships
  • Sole proprietors with employees
  • Nonprofits and religious organizations
  • Trusts and estates
  • Businesses needing to open a business bank account or apply for business licenses

Even single-member LLCs often benefit from having an EIN, especially when dealing with local banks or city agencies. If you’re unsure, it’s usually better to obtain one early in your business journey.

How to Apply for an EIN in St. Louis: A Step-by-Step Overview

  1. Gather Your Information:
    • Legal business name and address (use your St. Louis location for local filings)
    • Responsible party’s name and Social Security Number (typically the owner)
    • Business structure (LLC, corporation, sole proprietorship, etc.)
  2. Choose Your Application Method:
    • Apply online via the IRS website (fastest for most applicants)
    • Mail or fax Form SS-4 to the IRS
    • International applicants can apply by phone
  3. Submit Your Application:
    • Online applications typically provide your EIN immediately
    • Mail or fax submissions can take several weeks
  4. Keep Your EIN Confirmation:
    • This document is essential for opening a business bank account in St. Louis, registering with the Missouri Department of Revenue, and more

Avoiding Common EIN Mistakes: Tips for St. Louis Applicants

  • Double-check your business name: Mismatches with Missouri state records can delay your EIN assignment.
  • Don’t reuse old EINs: Each new business entity in St. Louis requires a fresh EIN, even if you’ve operated under a different structure previously.
  • Use a reliable mailing address: Make sure the address you provide can receive official IRS correspondence—PO Boxes are acceptable but ensure you check them regularly.
  • Know your business structure: Selecting the wrong entity type is a common source of confusion. Review Missouri’s business structures if you’re unsure.

Frequently Asked Questions


Yes, you have options. Our paid service offers a streamlined application process, professional review of your submission, help with resolving common issues, customer support, and order status tracking for your EIN application. If you prefer, you may also apply directly through the official IRS website at no charge. The choice depends on your preference for convenience and support.


If you apply online, you can typically receive your EIN instantly. Applications submitted by mail or fax may take up to four weeks. Factors like application errors or missing information can cause delays, so it’s best to review your details carefully before submitting.

Ready to Launch Your St. Louis Business?

Getting an EIN number is a crucial early step for any St. Louis, Missouri entrepreneur. With the right preparation, you can breeze through the process and focus on what matters most—growing your business in this dynamic city. Whether you apply directly or choose a guided service, securing your EIN is your ticket to business legitimacy and local opportunities.