What Is an EIN?
An Employer Identification Number (EIN) is a nine-digit number the IRS assigns to your business. Think of it as a Social Security Number for your business. It is also called a Federal Tax Identification Number.
You use your EIN to:
- Open a business bank account
- File federal tax returns for your business
- Hire employees
- Apply for business licenses and permits
- Establish business credit
- Apply for business loans or lines of credit
The IRS issues over 5 million EINs per year. It is one of the most fundamental steps in establishing a legitimate business, and it costs absolutely nothing.
Who Needs an EIN?
You are required to have an EIN if you:
- Have employees
- Operate as a corporation or partnership
- File certain tax returns (employment, excise, or alcohol/tobacco/firearms)
- Withhold taxes on income paid to a non-resident alien
- Have a Keogh plan
You should get an EIN even if you are not required to. Using an EIN instead of your Social Security Number on invoices, W-9 forms, and vendor applications protects your personal identity and looks more professional.
EIN Requirements by Entity Type
| Entity Type | EIN Required? | Notes |
|---|---|---|
| Sole Proprietor (no employees) | No, but recommended | Can use SSN, but EIN protects identity |
| Sole Proprietor (with employees) | Yes | Needed for payroll tax filings |
| Single-Member LLC | No, but recommended | Required if LLC has employees or elects S-Corp |
| Multi-Member LLC | Yes | Always required for partnership tax returns |
| S-Corporation | Yes | Required for corporate tax returns and payroll |
| C-Corporation | Yes | Required for corporate tax returns and payroll |
| Nonprofit | Yes | Required before applying for tax-exempt status |
| Partnership (any type) | Yes | Required for Form 1065 filing |
How to Get Your EIN
Option 1: Online (Recommended)
The IRS has a free online application at irs.gov. It is the fastest method:
- Go to the IRS EIN application page
- Answer questions about your entity type, responsible party, and reason for applying
- Submit the application
- Receive your EIN immediately upon completion
The online application is available Monday through Friday, 7 a.m. to 10 p.m. Eastern Time. The "responsible party" must have a valid U.S. Taxpayer Identification Number (SSN or ITIN).
Step-by-Step: The EIN Online Application
Here is exactly what the IRS online application asks:
Step 1 — Identify the entity type. Select from sole proprietor/individual, LLC, corporation, partnership, S-Corp, trust, estate, church, nonprofit, or other. Choose carefully — the wrong selection can create complications later.
Step 2 — Select LLC classification (if applicable). For LLCs, you specify the number of members (single or multi-member). This determines default tax treatment.
Step 3 — Reason for applying. Common reasons include "started new business," "hired employees," or "banking purposes." Select the one that best matches your situation.
Step 4 — Responsible party information. Enter the name and SSN/ITIN of the "responsible party" — the person who owns or controls the entity. For a single-member LLC, this is you. For corporations, this is typically the principal officer.
Step 5 — Business details. Enter the legal name, trade name (DBA), address, state of formation, and date the business started.
Step 6 — Additional information. Specify the type of business activity, whether you expect to hire employees, expected highest number of employees, first date wages will be paid, and the closing month of your accounting year.
Step 7 — Confirmation. Review everything, submit, and receive your EIN immediately on screen. Print or save the confirmation.
The entire process takes 5-10 minutes. You can only complete one EIN application per responsible party per day through the online system.
Option 2: Fax
Complete Form SS-4 and fax it to the IRS. You will receive your EIN within four business days.
Option 3: Mail
Complete Form SS-4 and mail it to the IRS. Processing takes four to six weeks. There is almost no reason to use this method.
Option 4: Phone (International Applicants)
If you are calling from outside the U.S., you can apply by calling (267) 941-1099 during business hours.
Important: Do not pay anyone to get you an EIN. The process is free and takes less than 10 minutes online. Services that charge $50-$200 for EIN filing are taking your money for something you can do yourself in the time it takes to drink a cup of coffee.
When You Need a New EIN vs. Keeping Your Existing One
Some business changes require a new EIN; others do not. This trips up a lot of business owners:
| Business Change | New EIN Required? |
|---|---|
| Sole proprietor incorporates or forms LLC | Yes |
| Sole proprietor changes name | No |
| LLC adds or removes members | No |
| LLC elects S-Corp status | No (use existing EIN) |
| Partnership adds or removes partners (existing partnership continues) | No |
| Corporation changes name | No |
| Corporation merges with another corporation | Depends — new entity needs new EIN |
| Bankruptcy filing | Yes (for corporation); No (for sole proprietor) |
| Purchase an existing business | Yes (new owner, new EIN) |
| Inherited a business | Yes |
If in doubt, call the IRS Business & Specialty Tax Line at (800) 829-4933.
After You Get Your EIN
Once you have your EIN, keep the confirmation letter (CP 575) in a safe place. You will need it to open your bank account and for various registrations. If you lose it, you can call the IRS Business & Specialty Tax Line at (800) 829-4933 to retrieve it, but that process is slow.
What to Do Immediately After Getting Your EIN
- Save or print the CP 575 confirmation letter — store it with your other important business documents
- Open a business bank account — bring the EIN confirmation, Articles of Organization (for LLCs), and photo ID
- Register for state taxes — see below for details
- Update your W-9 form — use the EIN instead of your SSN going forward
- Set up accounting software — configure with your EIN for proper tax reporting
State Tax Registrations
Your EIN handles the federal side. Now you need to register with your state. The specific registrations depend on your business activities and location, but here are the most common:
State Income Tax / Withholding Tax
If your state has an income tax and you have employees, you need to register with your state's department of revenue (or equivalent) for employer withholding tax. This is the account you will use to remit state income taxes withheld from employee paychecks.
Sales Tax Permit
If you sell taxable goods or services, you need a sales tax permit (also called a seller's permit or sales tax license). Not every state has a sales tax — Alaska, Delaware, Montana, New Hampshire, and Oregon do not. Whether your specific services are taxable varies by state. In many states, construction labor is taxable; in others, it is not. Check your state's rules.
Sales Tax Overview by State
| State | State Sales Tax Rate | Construction Labor Taxable? | Professional Services Taxable? | Notes |
|---|---|---|---|---|
| California | 7.25% (+ local up to 10.75%) | Generally no | No | Complex use tax rules apply |
| Texas | 6.25% (+ local up to 8.25%) | No | Some (data processing, security, etc.) | Most services not taxable |
| Florida | 6.0% (+ local up to 8.5%) | No | Some (commercial cleaning, pest control) | Commercial rentals are taxable |
| New York | 4.0% (+ local up to 8.875%) | No | No | Clothing under $110 exempt in NYC |
| Illinois | 6.25% (+ local up to 11%) | No | No | Use tax on out-of-state purchases |
| Ohio | 5.75% (+ local up to 8.0%) | No | Some (lawn care, landscaping) | Many service exemptions |
| Pennsylvania | 6.0% (+ local up to 8%) | No | No | Food and clothing exempt |
| Washington | 6.5% (+ local up to 10.4%) | Yes (retail sales tax on construction) | No state income tax | B&O tax applies instead |
| Delaware | None | N/A | N/A | No sales tax |
| Oregon | None | N/A | N/A | No sales tax |
This is a simplified overview. Sales tax rules are among the most complex in state taxation. When in doubt, consult your state's department of revenue or work with a CPA who specializes in your industry and state.
Unemployment Insurance Tax
If you have employees, you must register with your state's unemployment insurance program. In most states, this means creating an account with the state workforce or employment security agency and paying state unemployment tax (SUTA) on employee wages.
SUTA rates vary by state and by employer. New employers typically pay a default rate until they establish an experience rating. Typical ranges:
| State | New Employer SUTA Rate | Taxable Wage Base | Notes |
|---|---|---|---|
| California | 3.4% | $7,000 | Plus Employment Training Tax of 0.1% |
| Texas | 2.7% | $9,000 | Rates can range from 0.25% to 6.25% |
| Florida | 2.7% | $7,000 | Experience rates range from 0.10% to 5.40% |
| New York | 4.025% (approx.) | $12,500 | Complex rate schedule |
| Illinois | 3.525% | $13,590 | Includes fund building surcharge |
| Ohio | 2.7% | $9,000 | Experience rates range from 0.3% to 9.2% |
Workers' Compensation
Most states require businesses with employees to carry workers' compensation insurance. Some states run a state fund; others require you to purchase from a private insurer. A few states (Texas, for example) do not mandate it for most employers, but going without is a serious risk.
Workers' compensation premiums vary dramatically by industry and state. Here are typical annual costs per $100 of payroll:
| Industry | Typical Rate per $100 of Payroll |
|---|---|
| Office/Clerical | $0.20 - $0.50 |
| Retail | $0.50 - $2.00 |
| Landscaping | $3.00 - $8.00 |
| Carpentry/General Construction | $5.00 - $15.00 |
| Roofing | $10.00 - $30.00 |
| Electrical Work | $3.00 - $8.00 |
| Plumbing | $3.00 - $7.00 |
For a roofing company with $300,000 in annual payroll, workers' compensation insurance could cost $30,000-$90,000 per year. For an office-based consulting firm with the same payroll, it might cost $600-$1,500. This is a major cost that needs to be factored into your business plan.
Business Licenses and Permits
Beyond tax registrations, most businesses need one or more licenses or permits. The requirements depend on your industry, location, and business activities.
City or County Business License
Most cities and many counties require a general business license to operate within their jurisdiction. Fees typically range from $25 to $500 annually. Some cities base the fee on your business revenue.
Professional or Trade Licenses
Many industries require specific licenses:
- General contractors: State contractor's license (usually requires passing an exam and showing proof of experience and insurance)
- Electricians, plumbers, HVAC technicians: State or local trade licenses
- Engineers, architects: Professional engineering or architecture license
- Real estate agents: State real estate license
Contractor Licensing Requirements by State
Since many readers are in the trades, here is a deeper look at contractor licensing:
| State | State License Required? | Licensing Authority | Exam Required? | Bond/Insurance Required? |
|---|---|---|---|---|
| California | Yes (projects over $500) | CSLB | Yes | Yes ($25,000 bond) |
| Texas | No state license (some trades licensed) | TDLR for specific trades | Varies | Varies by trade |
| Florida | Yes | DBPR/Construction Industry Board | Yes | Yes (varies by type) |
| New York | No state license (NYC has its own) | NYC DOB for NYC work | Yes (NYC) | Yes (NYC) |
| Arizona | Yes | ROC | Yes | Yes (bond required) |
| Ohio | No state license (local licenses) | Local building departments | Varies | Varies |
| Illinois | No state license (Chicago requires one) | Local jurisdictions | Varies | Varies |
| Georgia | No state license (some trades licensed) | Secretary of State | Varies | Varies |
In states without a state-level contractor license, local jurisdictions (cities, counties) often have their own licensing requirements. Always check local rules.
Specialty Permits
Depending on your business, you may also need:
- Home occupation permit — if you run your business from home
- Sign permit — to put up business signage
- Health permits — for food service or certain health-related businesses
- Environmental permits — for businesses that handle hazardous materials
- Building permits — for construction work
Complete New Business Registration Checklist
Here is everything a typical new business needs to handle, in order:
| Step | What to Do | Cost | Timeline |
|---|---|---|---|
| 1 | Form your entity (LLC, Corp, etc.) | $50 - $500 | 1-7 days (online filing) |
| 2 | Get your EIN from the IRS | $0 | Immediate (online) |
| 3 | Open a business bank account | $0 - $25/month | 1-2 days |
| 4 | Register for state income tax withholding | $0 | 1-5 days (online) |
| 5 | Get a sales tax permit (if applicable) | $0 | 1-10 days |
| 6 | Register for state unemployment insurance | $0 | 1-5 days |
| 7 | Get workers' compensation insurance | Varies by industry | 1-7 days |
| 8 | Get a city/county business license | $25 - $500 | 1-14 days |
| 9 | Get professional/trade licenses | $50 - $1,000+ | Days to months (may require exam) |
| 10 | Get general liability insurance | $400 - $3,000/year | 1-3 days |
| 11 | Set up accounting software and bookkeeping | $0 - $50/month | 1 day |
| 12 | File DBA (if using a trade name) | $10 - $100 | 1-14 days |
How to Find Your Requirements
There is no single national database of all license and permit requirements. Here is how to figure out what you need:
- SBA License and Permit Tool — sba.gov has a tool that helps identify federal, state, and local requirements based on your business type and location.
- Your state's Secretary of State website — lists state-level requirements.
- Your state's department of revenue — for tax registrations.
- Your city and county websites — for local business licenses.
- Your industry association — trade associations often publish licensing requirement guides.
Keeping Track of Renewals
Most business registrations, licenses, and permits have renewal dates. Create a calendar or spreadsheet tracking:
- Registration or license name
- Issuing authority
- Account or license number
- Expiration date
- Renewal cost
- Renewal process (online, mail, etc.)
Operating with an expired license can result in fines, inability to enforce contracts, or even criminal penalties in some jurisdictions. Do not let renewals slip.
Annual Renewal Calendar Template
| Month | Common Renewals |
|---|---|
| January | Annual business license renewal (many cities); state LLC annual report (varies) |
| March | S-Corp tax return due (March 15); partnership tax return due (March 15) |
| April | Individual tax return due (April 15); C-Corp tax return due (April 15) |
| June | Q2 estimated tax payment (June 15) |
| July | Mid-year insurance policy renewals |
| September | Q3 estimated tax payment (September 15) |
| December | Year-end bookkeeping preparation; review registrations for upcoming renewals |
Common Mistakes
- Paying for a free EIN. The IRS does not charge for EINs. Do not pay a third party.
- Using your SSN on business documents. Get an EIN and use it instead.
- Skipping state registrations. Operating without required tax registrations can lead to penalties, interest, and back taxes.
- Not getting the right licenses. Working without a required contractor's license can void your contracts and expose you to lawsuits.
- Ignoring local requirements. City and county licenses are easy to overlook but enforced through inspections and complaints.
- Applying for an EIN before forming your entity. If you plan to form an LLC, form it first, then apply for the EIN. The EIN application asks for your entity type and formation date. Getting this wrong creates mismatches that are tedious to fix.
- Not separating state registrations from entity formation. Forming an LLC with the Secretary of State does not register you for sales tax, withholding tax, or unemployment insurance. Those are separate registrations with different agencies.
- Assuming one license covers everything. A general business license does not replace a contractor's license, a sales tax permit, or a professional license. You may need multiple registrations and licenses operating simultaneously.
Bottom Line
Getting your EIN is the easy part — it is free and takes 10 minutes. The harder part is figuring out all the state and local registrations, licenses, and permits your specific business needs. Take the time to research your requirements, register properly, and track your renewal dates. It is not glamorous work, but it keeps you legal and protects your right to do business.
4Sources
- 01
- 02Get Federal and State Tax ID Numbers — U.S. Small Business Administration
- 03Apply for Licenses and Permits — U.S. Small Business Administration
- 04
Frequently Asked Questions
How long does it take to get an EIN?
If you apply online through the IRS website, you receive your EIN immediately upon completing the application. The online process takes about 5-10 minutes and is available Monday through Friday, 7 a.m. to 10 p.m. Eastern Time. Applying by fax takes about four business days, and applying by mail takes four to six weeks.
How much does it cost to get an EIN?
An EIN is completely free from the IRS. Do not pay any third-party service that charges $50-$200 to file for you — the application takes less than 10 minutes on the IRS website (irs.gov). The only situation where a paid service might make sense is if you are an international applicant without a U.S. taxpayer identification number.
Do I need an EIN if I have no employees?
You are not legally required to have an EIN as a sole proprietor with no employees, but you should get one anyway. It protects your Social Security Number by keeping it off invoices, W-9 forms, and vendor applications. You will also need an EIN to open a business bank account, apply for business credit, and file certain tax returns. Multi-member LLCs and corporations are always required to have one.
What business licenses do I need to start a business?
Requirements vary by industry, state, and city. Most businesses need at minimum a city or county business license ($25-$500 annually). Contractors typically need a state contractor's license requiring an exam and proof of insurance. Trade professionals (electricians, plumbers, HVAC) need state or local trade licenses. Check your city, county, and state websites, and the SBA's license and permit tool at sba.gov.
Do I need to register for state taxes when starting a business?
Yes, in most cases. If your state has an income tax and you have employees, you must register for employer withholding tax. If you sell taxable goods or services, you need a sales tax permit. If you hire employees, you must register for state unemployment insurance. Workers' compensation insurance is also required in most states. Each registration is a separate process through your state's revenue department.