How to Get an EIN Number in 2025: Step-by-Step Guide for New Businesses
Starting a new business in 2025? One of the very first steps you’ll need to take is obtaining an Employer Identification Number (EIN) from the IRS. Whether you plan to hire employees, open a business bank account, or file taxes as a corporation or partnership, an EIN is a must. This guide will walk you through everything you need to know—from what an EIN is, to how and where to apply for one, and what to expect after receiving it.
What Is an EIN and Why You Need One
An EIN, or Employer Identification Number, is a unique nine-digit number issued by the Internal Revenue Service (IRS) to identify a business entity for tax purposes. It functions much like a Social Security number—but for your business. In 2025, obtaining an EIN remains a critical step for entrepreneurs and small business owners alike.
You’ll need an EIN if you plan to hire employees, operate as a corporation or partnership, file employment taxes, or open a business bank account. Even if you’re a sole proprietor with no staff, many banks and vendors still require an EIN to process payments or create business relationships.
Beyond the basic legal requirements, an EIN also enhances your credibility. Using an EIN instead of your Social Security number can reduce your risk of identity theft when dealing with clients, financial institutions, or government agencies.
Moreover, having an EIN simplifies your business tax filings. Whether you’re filing for federal tax withholding, excise taxes, or quarterly payroll reports, your EIN ensures your business is properly tracked in the IRS system.
Think of your EIN as your business’s ID card—it validates that your operation exists in the eyes of the IRS and other official entities. It’s free to obtain, lasts forever, and opens the door to financial and legal advantages that are vital for growth and compliance.
Who Needs an EIN in 2025?
Not every business is legally required to get an EIN, but in 2025, more entrepreneurs and freelancers are choosing to get one—because the benefits outweigh the effort. If you're operating any type of structured business beyond a solo side hustle, you likely need an EIN.
First and foremost, all corporations and partnerships must obtain an EIN. This includes S corporations, C corporations, LLCs with more than one member, and general partnerships. These business types are treated as separate legal entities and require their own tax identification.
If you're a sole proprietor, you may not be legally required to have an EIN, but you'll still need one if you plan to:
- Hire employees
- Open a business bank account
- Apply for business licenses or permits
- Establish business credit
- Work with wholesalers or B2B vendors
Non-profit organizations, trusts, and estates that pay income must also have an EIN, as do certain types of retirement plans and real estate ventures.
Even online businesses, Etsy sellers, Amazon FBA operators, and freelance creatives increasingly use EINs to separate personal and business finances—making tax time easier and reducing liability.
In summary, if your business has plans to grow, work with others, or protect your personal information, getting an EIN in 2025 is a smart and proactive step.
What to Know Before You Apply
Before you dive into the EIN application process, it’s important to understand a few critical details that will make the experience faster and smoother. Preparing the right information in advance will help you avoid errors and delays.
First, decide on your official business structure. Are you a sole proprietor, LLC, corporation, partnership, or nonprofit? This choice affects how the IRS treats your business and what information you'll need to submit.
You’ll also need to know your business’s legal name and its principal address. If your LLC or corporation is registered with your state, make sure that name matches the one on your state documents. Inconsistencies can trigger rejections.
Additionally, have your Social Security number (SSN), Individual Taxpayer Identification Number (ITIN), or existing EIN (if you're applying as an entity) ready. The IRS requires this to identify the “responsible party”—the person who ultimately controls the business.
You'll be asked about the nature of your business activities and estimated employment levels. Be honest but brief—general categories are acceptable for most applications.
Also decide how you’ll apply: online, by fax, mail, or phone (international applicants only). The IRS online system is the fastest and is available Monday to Friday during business hours. You must complete it in one session—no saving and returning later.
Double-check everything before submitting. A single typo could lead to processing delays or the need to reapply. Being prepared is half the battle when it comes to government paperwork.
How to Apply for an EIN: Step-by-Step Process
Applying for an EIN in 2025 is free, straightforward, and can usually be done in under 15 minutes—if you’re prepared. Here’s how to navigate the process, step-by-step.
Step 1: Visit the IRS EIN application portal on the IRS website. You must complete the form in one sitting. The online portal is open Monday through Friday, 7 a.m. to 10 p.m. Eastern Time.
Step 2: Identify your business structure. Choose whether you're applying as a sole proprietor, LLC, corporation, partnership, nonprofit, or estate/trust. Your choice determines the rest of the form.
Step 3: Fill in business information, including legal business name, trade name (if different), mailing address, and the name and SSN/ITIN of the responsible party.
Step 4: Answer IRS questions regarding your reason for applying (e.g., starting a new business, hiring employees, banking purposes) and the types of business activities you expect to engage in.
Step 5: Choose how you’d like to receive your EIN confirmation. You can download it immediately or request it by mail. The downloadable letter (Form CP 575) is available right after online submission.
Step 6: Review and submit. Double-check your entries for accuracy. Once submitted, you’ll receive your EIN on the spot if done online.
For those applying by mail or fax, use Form SS-4. Mail processing takes up to 4 weeks, while fax takes about 4 business days. International applicants can apply by phone at 267-941-1099 (not toll-free).
What to Do After You Get Your EIN
After receiving your EIN, there are several key actions you should take to ensure your business is set up correctly and remains compliant. An EIN is just the beginning—what you do next truly matters.
1. Save your EIN confirmation notice (Form CP 575) in a safe and accessible location. You’ll need this document when opening a bank account, applying for licenses, or dealing with the IRS.
2. Open a business bank account using your EIN. Most financial institutions require this number as part of their Know Your Customer (KYC) checks. Having a dedicated account also helps separate your personal and business finances.
3. Register with your state and local authorities. Depending on where your business operates, you may need to register with the Secretary of State, Department of Revenue, or local business agencies using your EIN.
4. Apply for business licenses and permits based on your industry and location. Use your EIN when applying—it proves your legitimacy to regulators and customers alike.
5. Update tax records with your EIN if you're changing your business structure or converting from a sole proprietorship to an LLC or corporation.
Finally, make sure to use your EIN consistently. Use it on W-9 forms, payroll documents, vendor accounts, and business contracts. This protects your personal identity and reinforces your business’s professional presence.
Treat your EIN like your business’s Social Security number—safe, secure, and essential to everything that follows.
Common Mistakes to Avoid
While applying for an EIN is generally simple, it’s also easy to make avoidable mistakes that can lead to delays, confusion, or even legal complications. Here are some of the most common missteps to watch out for.
1. Choosing the wrong entity type — Selecting the incorrect business structure (e.g., corporation vs. LLC) can affect your taxes and legal obligations. Make sure your structure matches your official state registration.
2. Submitting duplicate EIN applications — Only one EIN is needed per business entity. Submitting multiple applications can cause IRS confusion and administrative errors. If you’re unsure whether you already have one, call the IRS to check.
3. Entering incorrect information — Typos in your name, address, or SSN/ITIN can delay your confirmation or cause IRS mismatches. Review your application thoroughly before submitting.
4. Applying with the wrong responsible party — The “responsible party” should be the individual who controls or manages the business, not a consultant or accountant. This ensures accuracy and prevents complications with future tax filings.
5. Losing your EIN confirmation notice — The IRS does not reissue CP 575 notices. If lost, you’ll have to request an EIN verification letter (Form 147C), which takes time. Save digital and physical copies right away.
Lastly, never pay for an EIN. The application is 100% free through the IRS. Third-party sites that charge fees are unnecessary and may even be scams. Always apply directly at IRS.gov to stay safe and efficient.
Final Thoughts
Getting an EIN in 2025 is a fast, free, and essential step for any new business owner. Whether you're starting a side hustle, launching a startup, or registering a nonprofit, an EIN helps you stay compliant, separate personal from business finances, and build long-term credibility.
By following the proper steps and avoiding common mistakes, you’ll be on your way to a stronger business foundation. From banking to taxes and licensing, your EIN is your gateway to official recognition and financial functionality.
Make it one of your first administrative actions—and you'll thank yourself later for getting it right from the start.
Frequently Asked Questions
Q: How long does it take to get an EIN?
A: If you apply online, you'll receive it immediately. Fax takes about 4 business days, and mail may take up to 4 weeks.
Q: Can I use my EIN immediately?
A: Yes. Most banks and agencies accept it instantly, though some IRS systems may take a few weeks to update.
Q: Is an EIN the same as a state tax ID?
A: No. An EIN is a federal ID. Some states require a separate state tax ID for sales tax or payroll filings.
Quick Summary
- An EIN is essential for taxes, hiring, and business banking.
- Most U.S. businesses will need one in 2025.
- Apply online via the IRS for fastest processing and free service.
- Prepare your entity type, address, and responsible party info in advance.
- Use your EIN on tax forms, bank accounts, licenses, and vendor setups.
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