How to Get an EIN in Maine

An EIN (Employer Identification Number) is your business's tax ID with the IRS. If you're starting a Maine LLC or corporation, hiring employees, or operating as a partnership or S-corporation, you'll need an EIN. This guide walks you through the application process, what to expect, and what happens next.

What Is an EIN and Who Needs One in Maine

An EIN is a nine-digit number issued by the IRS that identifies your business for tax purposes. It's similar to a Social Security number, but for your company.

You must obtain an EIN if your Maine business will:

• Employ any staff members
• Operate as a partnership, LLC with multiple members, or S-corporation
• Require a business bank account (most banks now require an EIN)
• File certain employment or excise tax returns
• Withhold payroll or backup withholding taxes

Sole proprietors without employees can operate under their Social Security number, but obtaining an EIN is optional and often recommended for privacy and banking purposes.

Materials and Documents You'll Need

The EIN application is simpler than most business paperwork. You won't need to submit documents, but you'll need information on hand:

• Your Social Security number (or ITIN if you're a non-U.S. resident business owner)
• Your Maine business legal name, exactly as it appears on your formation documents
• Your business address (street address, not a P.O. Box)
• The principal business activity (what your business does)
• The date you started or expect to start your business
• If you hired employees, the date of your first payroll
• Your business structure type (LLC, corporation, sole proprietorship, partnership)
• If you have a former EIN or business name, that information

Gather this information before starting your application. The process moves faster when you have everything at hand.

How to Apply for an EIN: Step-by-Step

Option 1: Online Application (Fastest)

Step 1: Visit the IRS EIN Application Page

Go to https://www.irs.gov/ein and select "Apply Online." You'll be directed to the IRS's online EIN application tool. This method is free and available 24/7.

Step 2: Answer the Preliminary Questions

The IRS will ask whether you've had an EIN before and whether you're applying as the owner or a third party (like an accountant or attorney). Answer accurately. If you're applying for an LLC or corporation you just formed, select "No" to the prior EIN question.

Step 3: Provide Your Business Information

Enter your legal business name exactly as it appears on your Maine Certificate of Formation (for LLCs) or Articles of Incorporation (for corporations). Include your principal business address. The IRS does not accept P.O. Boxes as a business location, so use your physical street address in Maine.

Step 4: Describe Your Business Activity

Select your primary business activity from the dropdown menu or enter a brief description (e.g., "Retail clothing sales," "Plumbing services," "Software development"). Be as specific as possible. This helps the IRS classify your business correctly for tax purposes.

Step 5: Provide Your Personal Information

Enter the name, Social Security number, and contact information for the owner or responsible party. For an LLC, this is typically the managing member. For a corporation, this is usually the president or principal officer.

Step 6: Review and Submit

Review all information for accuracy. Once submitted, the IRS will display your EIN on screen immediately and email it to you. Write down your EIN or take a screenshot before closing the page, as you'll need it right away.

Option 2: By Phone (Immediate, but Limited Hours)

If you prefer to speak with someone, call the IRS Business and Specialty Tax Line at 1-800-829-4933. Have all your business information ready. The IRS issues your EIN by phone during the call and mails confirmation within two weeks. Lines are open Monday through Friday, 7 a.m. to 7 p.m. Eastern Time.

Option 3: By Mail or Fax

Download Form SS-4 from https://www.irs.gov/forms, complete it, and mail or fax it to the IRS. This method takes 4 to 6 weeks. Include a cover letter with your contact information. This option is least common now that online and phone options are available, but it works if you prefer paper documentation.

Processing Times: What to Expect

Online Application: Immediate. Your EIN is displayed on screen as soon as your application is processed, usually within minutes. You can use it right away for banking and payroll purposes. The IRS mails a formal confirmation letter within two weeks.

Phone Application: Immediate during the call. Confirmation arrives by mail in 2 to 3 weeks.

Mail or Fax: 4 to 6 weeks from receipt. Processing times can vary, especially during tax season (January through April).

Your EIN is valid indefinitely. You do not renew it or pay fees to maintain it.

After You Get Your EIN: Next Steps

Register for Maine State Taxes

An EIN is a federal identification number. You still need to register with Maine for state income tax and employment taxes if applicable. Visit https://www.maine.gov/revenue/ to register. Most Maine businesses file a Form 941-ME (for employers) or Form ME-1040ES (for self-employed individuals). The application process is straightforward and takes 1 to 2 weeks.

Open a Business Bank Account

Most banks now require an EIN to open a business account under your company's name. Bring your EIN confirmation letter, your Certificate of Formation or Articles of Incorporation (for LLCs and corporations), a government-issued photo ID, and your Social Security number. This typically takes one business day.

Apply for Required Licenses and Permits

Depending on your industry, you may need state and local licenses. Maine does not issue a general statewide business license, so check with your city or town clerk and the Maine Department of Professional and Financial Regulation. Use the free Business Answers licensing assistant at https://maine.gov/businessanswers to identify requirements for your specific business type.

Set Up Payroll (If You Have Employees)

If you're hiring staff, use your EIN to register for payroll taxes with both the federal IRS and Maine Revenue Services. You'll need to file employment tax returns quarterly (Form 941) and annual reconciliation (Form 940). Many businesses use payroll services like ADP or Gusto to handle this automatically.

Common Mistakes to Avoid

Using Your Social Security Number Instead of Your EIN

Once you have an EIN, all business tax filings and banking should use the EIN, not your personal SSN. This separates your personal finances from your business finances and protects your privacy.

Entering Your Business Name Incorrectly

Your EIN application must match your Maine formation documents exactly. If your LLC is "Acme Solutions, LLC," do not apply as "Acme Solutions Inc." Mismatches can delay banking, payroll, and tax filings.

Forgetting to Register for State Taxes

An EIN is federal only. You still need to register separately with Maine Revenue Services if you have employees or operate as a partnership, S-corp, or multi-member LLC. Missing this step can result in penalties.

Listing a P.O. Box as Your Business Address

The IRS requires a physical street address. If you don't have a physical location yet, use your home address or a registered agent's address.

Waiting Too Long After Formation

Apply for your EIN as soon as your LLC is formed or corporation is incorporated. You'll need it for your first business account, payroll, and tax filings. Delays make it harder to keep your business finances organized.

Frequently Asked Questions

Can I get an EIN the same day I form my LLC in Maine?

Yes. Your LLC formation is processed by the Maine Secretary of State within 40 to 55 business days (or 24 hours with expedited service). You can apply for your EIN online immediately, even while waiting for your Certificate of Formation to arrive. The IRS does not verify your formation status in real time.

Do I need to file a separate federal form with my EIN?

Not immediately. Your EIN application is your federal notification. The IRS will expect tax returns based on your business structure (Form 1120S for an S-corp, Form 1065 for a partnership, Form 1120 for a C-corp, or Schedule C on your personal return for a sole proprietor). File these by the deadline each year.

How do I check the status of my EIN application?

If you applied online or by phone, your EIN was issued immediately and you have a confirmation. If you mailed Form SS-4, call the IRS at 1-800-829-4933 after six weeks and have your application date ready. Processing delays rarely exceed six weeks outside of tax season.

Can I change my business name after getting an EIN?

Yes, but you keep the same EIN. File an amended Form SS-4 with the IRS if you make a legal name change to your LLC or corporation. You do not need a new EIN for a name change to the same business entity.

What if I'm a non-U.S. resident starting a Maine business?

You'll need an ITIN (Individual Taxpayer Identification Number) instead of an SSN. Apply for an ITIN first at https://www.irs.gov/individuals/individual-taxpayer-identification-number, then use it on your EIN application. Non-residents can apply for an EIN online or by mail.

Bottom Line

Getting an EIN for your Maine business takes minutes online or by phone and costs nothing. The fastest path is the IRS online application at https://www.irs.gov/ein. After you receive your EIN, register with Maine Revenue Services, open a business bank account, and apply for any industry-specific licenses. Keep your EIN safe and use it on all federal and state business documents.

Important Disclaimer

This article is informational only and is not legal or tax advice. EIN and tax registration requirements can vary based on your specific business structure, industry, and circumstances. Consult with a qualified tax professional or attorney before making decisions about your business formation, EIN application, or tax obligations. This content reflects IRS and Maine Revenue Services guidance as of the publication date and may change. For the most current information, visit https://www.irs.gov and https://www.maine.gov/revenue/.