Home / EIN Guides EIN Guides Everything about getting and using an Employer Identification Number, written by the team that prepares and files EIN applications every business day, including the failure modes the IRS’s own pages never explain.
Tool: EIN Reference Number Lookup The IRS rejected your application with a three-digit number. Enter it and get what it means and what to do next, for every code from 101 to 115.
Skip the paperwork. Our specialists prepare and file your EIN application and get your EIN to you, typically within 2 to 4 business days (about 11 if it has to go by fax).
Start Now → Jump to a guide All 69 guides, A to Z Business License vs EIN: Do You Need Both? Can You Get an EIN During a Government Shutdown? Can You Get an EIN for a DBA? Can You Get an EIN the Same Day? Can You Get an EIN With an ITIN? Changing Your EIN's Business Name, Address, or Responsible Party Daycare EIN Lookup: Finding Your Child Care Provider's Tax ID Do I Need a New EIN? The Full Scenario Table Do I Need an EIN? (Every Situation, Answered) Do You Need an EIN to Open a Business Bank Account? Does an LLC Need an EIN? When It Is Required and When It Is Not EIN Application Status: How to Check Whether Your EIN Was Issued EIN Before or After the LLC? (And Whether You Need an LLC at All) EIN Confirmation Letter: CP 575 vs 147C vs the Digital CP 575 EIN for a Corporation or S-Corp EIN for a Household Employer: Nanny, Caregiver, Housekeeper EIN for a New Business: How to Apply for a New EIN EIN for a Nonprofit: Get the Number Before the 501(c)(3) EIN for a Partnership or Multi-Member LLC EIN for a Single Member LLC: How to Get One, and the W-9 Question EIN for a Sole Proprietor: Why Most Get One, and When It Becomes Mandatory EIN for a Trust: Which Trusts Need One and Who Applies EIN for an Estate Bank Account EIN for an Irrevocable Trust EIN Lookup: How to Find Your EIN (or Another Company's) EIN Number Format: What an EIN Looks Like EIN Reference Number 105: Locked Out? Here Is the Fix Federal Tax ID Number for a Business: What It Is and How to Get One Form 2553 Instructions: How to File the S Corporation Election Form 8822-B Instructions: Change an EIN's Address or Responsible Party Form 8832 Instructions: Entity Classification Election for an LLC Form SS-4 for a Single-Member LLC: A Filled-In Sample Form SS-4 for an Estate: Every Line, Filled In Form SS-4 Instructions, Line by Line How Long Does an EIN Take? Online, Fax and Mail Times How to Apply for an EIN by Fax: SS-4 Fax Numbers and What Comes Back How to Apply for an EIN for an LLC (LLC Tax ID Number) How to Cancel or Close an EIN How to Fill Out a W-9 as an LLC or Sole Proprietor: EIN or SSN? How to Find Your LLC's EIN Number How to Get an EIN Number for an Estate (Estate Tax ID Number) How to Get an EIN Number: 4 Ways, Step by Step How to Get an EIN Without an SSN How to Verify an EIN: Check That a Tax ID Is Real IRS CP 575 Letter (Your EIN Letter): What It Is and Where to Find Yours IRS EIN Assistant: How the Online EIN Application Works IRS EIN Error Code 109: What It Means and What to Do IRS EIN Online Application Not Working? Every Cause and Fix IRS EIN Phone Number: Which Line to Call and What It Can Do IRS EIN Reference Number 104: Designee Conflict IRS EIN Reference Number 114: One EIN Per Day IRS EIN Reference Number 115: Deceased Person Flag IRS EIN Reference Numbers 101 to 115, Explained IRS EIN Reference Numbers 102 and 103: Responsible Party Mismatch IRS EIN Reference Numbers 110, 112 and 113 IRS Error 101 (EIN Reference Number 101): How to Fix It ITIN vs EIN: Which One You Need, and Whether You Need an ITIN First Lost EIN? How to Get an IRS 147C Verification Letter Made a Mistake on Your EIN Application? How to Fix Each One New EIN Not Active Yet? Why It Gets Rejected for Up to Two Weeks Nonprofit EIN Lookup: How to Find a Charity's Tax ID Number Revocable vs. Irrevocable Trust: Which One Needs an EIN? State Employer ID Numbers: All 50 States in One Table State Tax ID vs Federal EIN: What Is the Difference? Trust EIN After the Grantor Dies: What the Trustee Does What Is a TIN Number? EIN vs TIN vs SSN vs ITIN What Is an EIN Used For? (And Who Needs One) Where to File Form 2553: Fax Number and Mailing Address by State Why Does a Trust Need an EIN?
Most recently updated How to Get an EIN Number: 4 Ways, Step by Step Online, fax, mail, and the international phone line. Real timelines, what you need, and what can go wrong.
IRS EIN Assistant: How the Online EIN Application Works EIN Assistant is the IRS's name for its online EIN application. Every page of the rebuilt tool in order, the rules that end a session (hours, 15 minutes idle, one per day, SSN required), what to have ready, and what each reference number means when it returns one instead of an EIN.
How to Verify an EIN: Check That a Tax ID Is Real The IRS has no public lookup, but payers can use TIN Matching, anyone can ask for the CP 575 or 147C letter and a W-9, and nonprofits and public companies are on the public record. Which route fits, and what verification sites actually do.
IRS CP 575 Letter (Your EIN Letter): What It Is and Where to Find Yours The EIN letter the IRS issues when it assigns the number, created once and never reissued. What it contains, where your copy went depending on how you applied, and what banks accept instead.
IRS EIN Phone Number: Which Line to Call and What It Can Do 800-829-4933 for an EIN you already have, 267-941-1099 for applicants with no US address, what each line will and will not do, what to have ready, and the IRS's own wait-time figures.
State Tax ID vs Federal EIN: What Is the Difference? The EIN comes from the IRS and is one number per business. State tax IDs come from your state's revenue agency, there can be several, and you usually need the EIN first. Which is which on a W-2, a bank form and a sales tax permit.
How to Get an EIN Without an SSN Foreign founders can get an EIN with no SSN and no ITIN, just not through the IRS online tool. The route that works.
How Long Does an EIN Take? Online, Fax and Mail Times The honest timeline for every application method, and what actually causes delays.
Lost EIN? How to Get an IRS 147C Verification Letter The 147C is the letter the IRS sends to confirm an existing EIN when the CP 575 is gone. Who may ask, the exact call, fax or mail delivery, and the five places your EIN is already written down.
Revocable vs. Irrevocable Trust: Which One Needs an EIN? The grantor trust rule decides it. When a living trust runs on the grantor's SSN, when it must have its own number, and the moment one becomes the other.
Page 1 of 7 · 69 guides Older guides → All 69 guides, A to Z Business License vs EIN: Do You Need Both? Can You Get an EIN During a Government Shutdown? Can You Get an EIN for a DBA? Can You Get an EIN the Same Day? Can You Get an EIN With an ITIN? Changing Your EIN's Business Name, Address, or Responsible Party Daycare EIN Lookup: Finding Your Child Care Provider's Tax ID Do I Need a New EIN? The Full Scenario Table Do I Need an EIN? (Every Situation, Answered) Do You Need an EIN to Open a Business Bank Account? Does an LLC Need an EIN? When It Is Required and When It Is Not EIN Application Status: How to Check Whether Your EIN Was Issued EIN Before or After the LLC? (And Whether You Need an LLC at All) EIN Confirmation Letter: CP 575 vs 147C vs the Digital CP 575 EIN for a Corporation or S-Corp EIN for a Household Employer: Nanny, Caregiver, Housekeeper EIN for a New Business: How to Apply for a New EIN EIN for a Nonprofit: Get the Number Before the 501(c)(3) EIN for a Partnership or Multi-Member LLC EIN for a Single Member LLC: How to Get One, and the W-9 Question EIN for a Sole Proprietor: Why Most Get One, and When It Becomes Mandatory EIN for a Trust: Which Trusts Need One and Who Applies EIN for an Estate Bank Account EIN for an Irrevocable Trust EIN Lookup: How to Find Your EIN (or Another Company's) EIN Number Format: What an EIN Looks Like EIN Reference Number 105: Locked Out? Here Is the Fix Federal Tax ID Number for a Business: What It Is and How to Get One Form 2553 Instructions: How to File the S Corporation Election Form 8822-B Instructions: Change an EIN's Address or Responsible Party Form 8832 Instructions: Entity Classification Election for an LLC Form SS-4 for a Single-Member LLC: A Filled-In Sample Form SS-4 for an Estate: Every Line, Filled In Form SS-4 Instructions, Line by Line How Long Does an EIN Take? Online, Fax and Mail Times How to Apply for an EIN by Fax: SS-4 Fax Numbers and What Comes Back How to Apply for an EIN for an LLC (LLC Tax ID Number) How to Cancel or Close an EIN How to Fill Out a W-9 as an LLC or Sole Proprietor: EIN or SSN? How to Find Your LLC's EIN Number How to Get an EIN Number for an Estate (Estate Tax ID Number) How to Get an EIN Number: 4 Ways, Step by Step How to Get an EIN Without an SSN How to Verify an EIN: Check That a Tax ID Is Real IRS CP 575 Letter (Your EIN Letter): What It Is and Where to Find Yours IRS EIN Assistant: How the Online EIN Application Works IRS EIN Error Code 109: What It Means and What to Do IRS EIN Online Application Not Working? Every Cause and Fix IRS EIN Phone Number: Which Line to Call and What It Can Do IRS EIN Reference Number 104: Designee Conflict IRS EIN Reference Number 114: One EIN Per Day IRS EIN Reference Number 115: Deceased Person Flag IRS EIN Reference Numbers 101 to 115, Explained IRS EIN Reference Numbers 102 and 103: Responsible Party Mismatch IRS EIN Reference Numbers 110, 112 and 113 IRS Error 101 (EIN Reference Number 101): How to Fix It ITIN vs EIN: Which One You Need, and Whether You Need an ITIN First Lost EIN? How to Get an IRS 147C Verification Letter Made a Mistake on Your EIN Application? How to Fix Each One New EIN Not Active Yet? Why It Gets Rejected for Up to Two Weeks Nonprofit EIN Lookup: How to Find a Charity's Tax ID Number Revocable vs. Irrevocable Trust: Which One Needs an EIN? State Employer ID Numbers: All 50 States in One Table State Tax ID vs Federal EIN: What Is the Difference? Trust EIN After the Grantor Dies: What the Trustee Does What Is a TIN Number? EIN vs TIN vs SSN vs ITIN What Is an EIN Used For? (And Who Needs One) Where to File Form 2553: Fax Number and Mailing Address by State Why Does a Trust Need an EIN? Get Your EIN the Easy Way Answer a few questions in about 5 minutes. Our specialists prepare your IRS Form SS-4, file it, personally handle any rejection or name conflict along the way, and get your EIN to you, typically within 2 to 4 business days , or about 11 when the IRS requires the application by fax. One flat $197 service fee. No upsells, no subscriptions.
✓ Prepared and filed by specialists✓ Error 101 and rejection handling included✓ Data encrypted (AES-256)✓ Order tracking and email updatesStart My EIN Application You can also apply for an EIN directly with the IRS at irs.gov at no cost.