EIN Application Explained Simply: What Each IRS Question Means
Quick answer
The IRS EIN application asks about your legal name, the person who controls the business, your entity type, why you're applying, when you started, your accounting year, expected employees and what you do. Most small businesses answer: calendar year ending in December, starting a new business, and zero or few employees.
Key takeaways
- Enter your legal name exactly as on your state filing or Social Security card; your DBA goes in a separate field.
- The responsible party is the person who ultimately owns or controls the business, never a company or formation service.
- A single-member LLC is a disregarded entity by default; one with two or more members is a partnership by default.
- Most small businesses use a calendar year, so their accounting year closes in December.
- Only tick the Form 944 option if you expect $1,000 or less in employment taxes for the year.
In this article
The IRS EIN application isn't long, but some of its questions use tax language that leaves first-time owners guessing. What's a responsible party? Which entity type is a one-person LLC? What on earth is a Form 944 election? This guide translates each question into plain English and shows how most small businesses answer.
The online application and the paper Form SS-4 ask for the same information, so the explanations below apply to both. We'll reference the SS-4 line numbers, since that's how the IRS instructions are organized. For the click-by-click process of applying online, see our step-by-step EIN guide.
Your name: legal name and trade name
Legal name (line 1) is the official name of the business or person applying. The IRS says to enter it exactly as it appears on your Social Security card, charter or other legal document. For an LLC or corporation, that's the name your state approved. For a sole proprietor, it's your personal name, not your business name, with no nicknames or abbreviations.
Trade name (line 2) is your doing business as name, if it's different from your legal name. If Dana Brooks runs a tutoring business as Northside Tutoring, Dana Brooks goes on line 1 and Northside Tutoring on line 2. Use the same names consistently on future tax returns.
The responsible party
Responsible party (lines 7a and 7b) sounds formal, but it simply means the person who ultimately owns or controls the business. You enter their name and their SSN, ITIN or EIN.
Two rules matter. First, outside of government bodies, the responsible party has to be a human being rather than a business entity. Second, it can't be a nominee, such as a formation service that filed your paperwork. If the responsible party changes later, you tell the IRS on Form 8822-B within 60 days.
The LLC questions
Is it an LLC, and how many members? (lines 8a and 8b) If your business is an LLC, you'll say so and give the number of members, meaning owners.
This answer decides your default tax treatment. A US LLC with one member is treated as a disregarded entity, taxed through the owner's personal return. An LLC with two or more members is treated as a partnership by default.
Type of entity
Type of entity (line 9a) asks you to pick the one box that best describes your business: sole proprietor, partnership, corporation, and so on.
The answer that confuses most people is the single-member LLC. On Form SS-4, if the LLC will be taxed as a disregarded entity, the IRS says to check Other and write disregarded entity. If it plans to be taxed as a corporation or S corporation, check Corporation and note the matching tax form instead. The online application asks this through guided questions, so you'll mostly just confirm your LLC and its number of members.
| Your business | Typical answer |
|---|---|
| Self-employed, no LLC | Sole proprietor |
| One-owner LLC, default tax treatment | LLC with 1 member (disregarded entity) |
| LLC with two or more owners, default tax treatment | LLC with 2+ members (partnership) |
| Business registered as a corporation | Corporation |
Why you're applying
Reason for applying (line 10) lets you pick one option only. Most new businesses choose started a new business. Other choices include hired employees, banking purpose, changed type of organization and purchased a going business. You can't leave it blank or put N/A.
When you started and your accounting year
Date business started or acquired (line 11) is the day your business began or the day you bought an existing one. For a new LLC or corporation, many owners use the formation date approved by the state.
Closing month of accounting year (line 12) is the last month of your tax year. Individuals generally use the calendar year, which ends on December 31, and most small businesses do the same. If that's you, the answer is December. Partnerships and some other entities have special rules, so check with an accountant if you're unsure.
Employee questions
Highest number of employees expected (line 13) asks how many employees you expect in the next 12 months, split into agricultural, household and other. Zero is a valid answer, and if you put zero, you can skip the next question.
Form 944 election (line 14) is a box to tick if you expect your total employment tax liability for a full year to be $1,000 or less. The IRS says that generally means you expect to pay $5,000 or less in wages. If you check it, you file a single annual Form 944 rather than quarterly Form 941 returns, and you must keep doing so until the IRS tells you to switch.
First date wages paid (line 15) is when you first paid, or will first pay, wages. If you don't plan to have employees, enter N/A.
What your business does
Principal activity (line 16) asks you to pick the category that best fits your main business, such as construction, real estate, retail or manufacturing. If nothing fits, choose other and describe it.
Principal line of business (line 17) asks for more detail, and an answer is required. Be specific. The IRS gives the example of a construction business writing general contractor for residential buildings. A cleaning company might write residential and office cleaning services.
Have you had an EIN before?
Previously issued EIN (line 18) asks whether this same business has been issued an EIN before. A brand-new business answers no. If the business already has one, you may not need another, since name or address changes alone don't require a new EIN.
A quick cheat sheet for a typical new business
For a brand-new single-owner business with no employees yet, the answers usually look like this:
- Reason for applying: started a new business
- Closing month of accounting year: December
- Employees expected: 0
- Form 944 election: skipped
- First date wages paid: N/A
- Previously issued EIN: no
Your situation may be different, especially if you have partners, employees or plan to elect corporate taxation. When in doubt, check the official Form SS-4 instructions on IRS.gov or ask a tax professional before you submit.
Frequently asked questions
Is the online EIN application the same as Form SS-4?
They ask for the same information. Form SS-4 is the paper version, used when you apply by fax or mail, and its official instructions explain what each question means. The online application walks you through the same questions on screen.
What should a single-member LLC choose as its entity type?
On Form SS-4, a single-member LLC that will be taxed as a disregarded entity checks Other and writes disregarded entity. If it plans to be taxed as a corporation or S corporation, it checks Corporation and notes the related tax form. The online application asks this through a series of LLC questions.
What does closing month of accounting year mean?
It's the last month of your business's tax year. Most small businesses and all individuals generally use the calendar year, which ends December 31, so they choose December.
Should I check the Form 944 box on my EIN application?
Only if you'll have employees and expect your employment tax liability to be $1,000 or less for the full year, which generally means about $5,000 or less in wages. If you check it, you'll file Form 944 yearly instead of Form 941 quarterly until the IRS tells you otherwise. With no employees, you skip it.
What if I make a mistake on my EIN application?
Small errors like a name or address change can usually be corrected with the IRS later, and a change of responsible party is reported on Form 8822-B within 60 days. Choosing the wrong entity type is harder to fix, so match what you filed with your state before you submit.
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