Tax ID vs EIN: Are They the Same? (2026)
Tax ID vs EIN is a scope question, not a difference of numbers. An EIN is 1 type of tax ID. "Federal tax ID number" and "EIN" name the same 9-digit XX-XXXXXXX value. "Tax ID" is the umbrella term (TIN) that also covers the SSN and ITIN.
The IRS issues 1 EIN per entity for $0 under 26 U.S.C. § 6109. einnumber.co files Form SS-4 in 5 business days at 67, or 24 hours at 97 with the IRS call included.
An EIN is a federal tax ID. The 2 terms mean the same 9-digit number. "Tax ID" alone is broader: it is the TIN family of 5 numbers — EIN for businesses, SSN and ITIN for people, plus ATIN and PTIN. A business needs the EIN; the IRS charges $0 and issues 1 per entity.
What is the difference between a tax ID and an EIN?
The difference is scope. "Tax ID" is the umbrella term for all 5 IRS-recognized taxpayer numbers; the EIN is the 1 built for businesses. So every EIN is a tax ID, yet not every tax ID is an EIN. All 5 hold exactly 9 digits.
When a bank, vendor, or state form asks for a "federal tax ID number", it wants the 9-digit EIN in XX-XXXXXXX form. When a form asks for a "tax ID" with no "federal" or "employer" qualifier, it accepts an EIN, an SSN, or an ITIN, depending on the taxpayer. That single word "federal" is the tell.
| Term | What it covers | Issuer | Digits | Same as EIN? |
|---|---|---|---|---|
| EIN | 1 business or entity | IRS | 9 | It is the EIN |
| Federal tax ID | 1 business or entity | IRS | 9 | Yes |
| FEIN | 1 business or entity | IRS | 9 | Yes |
| Tax ID (TIN) | Any taxpayer, 5 subtypes | IRS or SSA | 9 | Sometimes |
| SSN | 1 individual | SSA | 9 | No |
| ITIN | 1 person without an SSN | IRS | 9 | No |
Compare the individual side directly: EIN vs SSN and EIN vs ITIN.
What are the 5 types of tax ID number?
A tax ID is 1 of 5 Taxpayer Identification Numbers: EIN, SSN, ITIN, ATIN, and PTIN. All 5 hold 9 digits. The SSN comes from the Social Security Administration; the other 4 come from the IRS. The EIN is the business tax ID; the rest attach to people.
| Type | Who issues it | Format | Who it is for | Where used |
|---|---|---|---|---|
| EIN | IRS | XX-XXXXXXX (9) | Businesses, employers, trusts, estates | W-9, 941, 1120, bank |
| SSN | SSA | XXX-XX-XXXX (9) | US citizens, permanent residents | 1040, W-2, W-4 |
| ITIN | IRS | 9XX-XX-XXXX (9) | Individuals with no SSN | 1040, W-8, W-9 |
| ATIN | IRS | 9XX-93-XXXX (9) | Pending US adoptions | 1040 dependent line |
| PTIN | IRS | P + 8 digits (9) | Paid tax preparers | Preparer signature line |
4 of the 5 come from the IRS; only the SSN comes from the SSA. The EIN is the only 1 issued to an entity rather than a human. An ITIN always begins with 9, and its middle 2 digits run 50 to 65 or 70 to 88. About 800,000 paid preparers hold a PTIN. For the full picture of where the EIN sits, see EIN vs taxpayer ID.
Is a tax ID the same as an EIN?
Sometimes. An EIN is 1 kind of tax ID, so an EIN is always a tax ID. The reverse is not true: a tax ID can be an SSN or ITIN attached to a person, not a business. The word "federal" or "employer" narrows a tax ID down to the EIN.
Read the qualifier on the form. "Federal tax ID", "FEIN", and "employer identification number" all point to the 9-digit EIN in XX-XXXXXXX form. A bare "tax ID" or "taxpayer ID number" is the umbrella TIN, which spans 5 numbers. A sole proprietor with 0 employees may hand over an SSN where a bare tax ID is requested.
The overlap causes 90 percent of the confusion behind "tax id vs ein" searches. 1 rule resolves it: for a business, the correct tax ID is the EIN in 100 percent of LLC, corporation, and partnership cases.
Is a federal tax ID the same as an EIN?
Yes. "Federal tax ID number" and "EIN" are 2 labels for 1 identical 9-digit IRS number. Both print in XX-XXXXXXX form. Both come from Form SS-4. Both cost $0 at the IRS. The IRS uses "EIN" on 100 percent of its own paperwork.
The term "federal tax ID" exists to contrast the IRS number with a state tax ID. States issue their own numbers for sales tax, payroll withholding, and franchise tax. Those are separate from the federal EIN. See state tax ID vs EIN for how the 2 layers stack.
"FEIN" adds an "F" for Federal, again to separate it from a state EIN. The IRS never prints FEIN; state payroll forms use it heavily. 3 names — EIN, federal tax ID, FEIN — resolve to 1 number on the CP-575 confirmation letter. For that terminology in depth, see FEIN vs EIN.
Which tax ID do you need — EIN, SSN, or ITIN?
Match the tax ID to the taxpayer. A business uses an EIN. A US individual uses an SSN. A person without an SSN uses an ITIN for personal tax, plus an EIN for any business they own. Non-US founders need an EIN with no SSN required.
| Who you are | Correct tax ID | Issuer | Format |
|---|---|---|---|
| LLC, corporation, partnership | EIN | IRS | XX-XXXXXXX |
| Employer with 1+ staff | EIN | IRS | XX-XXXXXXX |
| Sole proprietor, 0 employees | SSN or EIN | SSA or IRS | XXX-XX-XXXX / XX-XXXXXXX |
| US individual employee | SSN | SSA | XXX-XX-XXXX |
| Non-resident, no SSN | ITIN + EIN | IRS | 9XX-XX-XXXX + XX-XXXXXXX |
| Trust or estate | EIN | IRS | XX-XXXXXXX |
A non-US founder does not need an SSN or ITIN to get the business EIN. Line 7b of Form SS-4 accepts the word Foreign. The EIN issues the same way for all 150-plus countries we file from.
What does a federal tax ID (EIN) cost?
$0 at the IRS through all 4 filing routes: online, fax, mail, and phone. Form SS-4 downloads free. einnumber.co Standard costs 67 for 5 business day filing; Fast costs 97 for 24 hour filing with the IRS call.
| Route | IRS fee | Timeline | SSN needed? |
|---|---|---|---|
| Online (IRS Assistant) | $0 | 15 minutes | Yes |
| Fax to 855-215-1627 | $0 | 4 to 7 business days | No |
| Mail to Cincinnati, OH 45999 | $0 | 6 to 11 weeks | No |
| Phone 267-941-1099 | $0 | 1 call | No (non-US only) |
Competitor filing fees for the same $0 IRS number: Rocket Lawyer $59.99, ZenBusiness $99, Northwest $200. The IRS fee stays $0 in all 4 rows above.
Which name does each form use — tax ID or EIN?
IRS forms say "EIN" in 100 percent of cases. State forms say "FEIN" or "federal tax ID" in about 80 percent. Bank applications say "tax ID" in about 60 percent. Whatever the label, you write the same 9 digits from the CP-575 letter.
Line 7 of Form W-9 reads "Employer identification number". Line B of Form 1120 reads the same. Form 1099-NEC boxes read "TIN", which accepts the EIN. State payroll and sales-tax forms read "FEIN" or "federal tax ID". All 5 labels want 1 value: your EIN.
The 2 places that never say EIN are state agency forms and some bank onboarding screens. Both mean the federal EIN when they print "tax ID". If in doubt, supply the 9-digit XX-XXXXXXX number and it clears in 100 percent of business cases.
What filings use your federal tax ID (EIN)?
Every business return keyed to your EIN. Form 1120 for C-corps, Form 1120-S for S-corps, Form 1065 for partnerships, plus payroll Forms 941 and 940. Each carries the 9-digit tax ID in the entity header. Miss a deadline and penalties start at $60 per form.
| Filing | Deadline | Threshold | Penalty |
|---|---|---|---|
| Form 1120 | April 15 | Any C-corp | $220 per month up to 12 months |
| Form 1120-S | March 15 | Any S-corp | $235 per shareholder per month |
| Form 1065 | March 15 | Any partnership | $235 per partner per month |
| Form 941 | Quarterly | Any wages | 2 percent to 15 percent of unpaid tax |
| Form 940 | January 31 | $1,500 quarterly wages | 5 percent per month |
| Form 1099-NEC | January 31 | $600 per vendor | $60 to $310 per form |
| Form 5472 | April 15 | Foreign-owned SMLLC | $25,000 minimum |
| Form 8832 | Anytime | Entity election | 60-month lock |
Corporate tax rate: 21 percent. Self-employment tax: 15.3 percent. Social Security: 12.4 percent. Medicare: 2.9 percent. S-corp election window: 75 days.
What else do people ask about tax ID vs EIN?
10 more answers on tax ID vs EIN. Short version: an EIN is 1 of 5 tax ID types, and a federal tax ID is exactly the EIN. The IRS charges $0 and issues 1 EIN per entity in 9-digit XX-XXXXXXX form.
Is a tax ID the same as an EIN?
Partly. An EIN is 1 type of tax ID, so every EIN is a tax ID, but not every tax ID is an EIN. "Tax ID" is the umbrella term (TIN) covering 5 numbers: EIN, SSN, ITIN, ATIN, and PTIN. When a form says "federal tax ID number", it means the 9-digit EIN.
Is a federal tax ID the same as an EIN?
Yes. "Federal tax ID number" and "EIN" are 2 names for the identical 9-digit IRS number in XX-XXXXXXX form. The IRS issues 1 per entity for $0 under 26 U.S.C. § 6109. Banks, vendors, and state agencies use either name. The IRS prints "EIN" on 100 percent of its own documents.
What is the difference between a TIN and an EIN?
A TIN (Taxpayer Identification Number) is the umbrella category; an EIN is 1 of its 5 members. The other 4 are the SSN, ITIN, ATIN, and PTIN. All 5 hold 9 digits. The SSN comes from the SSA; the other 4 come from the IRS. A business uses the EIN branch of the TIN family.
Is a tax ID number the same as an SSN?
Not exactly. An SSN is 1 kind of tax ID for 1 person, printed as XXX-XX-XXXX. A business tax ID is the EIN, printed as XX-XXXXXXX. Both hold 9 digits. A sole proprietor with 0 employees may use an SSN as the business tax ID; an LLC or corporation must use an EIN instead.
Does every business need a federal tax ID (EIN)?
LLCs, C-corps, S-corps, partnerships, trusts, estates, and nonprofits need 1 in 100 percent of cases. A sole proprietor with 0 employees may file under an SSN on Schedule C. 4 events force an EIN: hiring 1 employee, forming an LLC, forming a corporation, or opening a Solo 401(k). Non-US founders always need 1.
How much does a tax ID (EIN) cost?
The IRS charges $0 through all 4 routes: online, fax, mail, and phone. Form SS-4 downloads free. einnumber.co files it for 67 on Standard or 97 on Fast. Competitors charge $59.99 to $200 for the same filing. The IRS fee itself stays $0 in every case.
How long does it take to get a tax ID (EIN)?
15 minutes online with an SSN or ITIN. 4 to 7 business days by fax to 855-215-1627 without an SSN. 6 to 11 weeks by mail to Cincinnati, OH 45999. Non-US founders also call 267-941-1099 for a 1-call route. einnumber.co delivers in 5 business days or 24 hours on Fast.
Do non-US founders get the same tax ID as US founders?
Yes. The IRS issues the identical 9-digit XX-XXXXXXX EIN regardless of SSN status. Line 7b of Form SS-4 accepts an SSN, an ITIN, or the word Foreign. The output is 1 federal tax ID with the same 60-plus valid prefixes. Non-US founders receive the CP-575 by fax within 4 to 7 business days.
Can 1 business have both a tax ID and an EIN?
No, not as 2 separate federal numbers. The IRS issues 1 EIN per entity, and that 1 number is the federal tax ID. Duplicate applications get consolidated to the first-issued EIN. A business may also hold a separate state tax ID for sales or payroll, but its federal tax ID is always the single EIN.
Is a FEIN different from a federal tax ID or EIN?
No. FEIN, federal tax ID, and EIN are 3 names for the same 9-digit number on the CP-575 letter. The "F" adds "Federal" to distinguish it from a state EIN. The IRS never uses FEIN in its forms; state payroll and sales-tax forms use it. All 3 print in XX-XXXXXXX form.