Losing or misplacing your business tax ID documents can feel like a crisis. Banks need them to open accounts, vendors require them for W-9 verification, and lenders demand them for loan applications. The most common document is the IRS-issued EIN confirmation (CP-575) or its replacement, the 147C verification letter[reference:0]. But the IRS doesn’t offer a simple online portal to download a copy, and the process can feel confusing[reference:1]. This guide breaks down the exact steps to request a copy of your business tax ID documents, whether you need the federal EIN letter, a state tax ID certificate, or a copy of your filed tax returns. You’ll get a formal letter template you can adapt for your records or to authorize a third party to act on your behalf.
What Business Tax ID Documents Are You Requesting?
Before you write a letter, it's important to identify exactly which document you need. The term “business tax ID documents” can refer to several different records.
- IRS EIN Confirmation Letter (CP-575): This is the official notice the IRS sends when your EIN is first assigned. It confirms your business name and EIN[reference:2]. You only receive this once, so if you lose it, you need a replacement.
- IRS Letter 147C (EIN Verification Letter): This serves as the official replacement for the CP-575. It verifies your existing EIN, business name, and address[reference:3]. Banks, payroll providers, and government agencies accept this in place of the original CP-575.
- State Tax ID Certificate: Many states issue their own tax ID numbers for sales tax, withholding, or other state-level taxes. You may need a copy of this certificate for state filings or to register with local authorities[reference:4].
- IRS Tax Account Transcripts: If you need to verify past tax filings or account activity, you can request a transcript from the IRS[reference:5].
Knowing which document you need will determine the right requesting authority and the information you must provide.
💡 Pro Tip:
Before you write a formal letter, check with your accountant, bank, or previous tax filings. They may already have a copy of your EIN confirmation on file, saving you the time and effort of requesting it directly from the IRS.
Common Mistakes to Avoid When Requesting Tax ID Documents
Even a well-crafted letter can be ineffective if you make these errors. Avoid them to streamline your request and prevent unnecessary delays.
- Not verifying your address with the IRS: The IRS will only send a 147C letter to the address currently on file[reference:6]. If your business address has changed, you must file Form 8822-B to update your address before you can receive the letter[reference:7].
- Sending a written request to the IRS when a phone call is faster: The IRS does not accept email or online requests for a 147C letter[reference:8]. While you can submit a written request by mail, the fastest way is to call the IRS Business & Specialty Tax Line[reference:9][reference:10].
- Using an incorrect legal entity name: Your business name on the request must exactly match the name on file with the IRS or state agency. Even a minor discrepancy (e.g., “Inc.” vs “Incorporated”) can cause rejection.
- Forgetting to include your EIN or file number: If you're requesting documents from a state agency, include your state-issued file number or registration number to help them locate your records quickly.
- Not specifying the delivery method: If you're requesting documents by phone or mail, state clearly whether you need them faxed, mailed, or emailed (if the agency allows it).
Step-by-Step Process to Request Your Business Tax ID Documents
The process varies depending on which document you need and which agency issued it. Here's a breakdown of the most common scenarios.
1. Requesting an IRS EIN Verification Letter (147C)
The IRS does not have an online portal for requesting a 147C letter[reference:11]. Your options are:
- Call the IRS Business & Specialty Tax Line: This is the fastest method. Call 1-800-829-4933, Monday through Friday, 7:00 a.m. to 7:00 p.m. local time[reference:12][reference:13]. Have your business name, EIN (if known), and address ready[reference:14]. Ask the representative for a “147C EIN Verification Letter.” You can request fax delivery for immediate receipt or mail delivery to the address on file[reference:15].
- Submit a written request by mail: While slower, you can send a formal letter to the IRS. Use the template below and mail it to the appropriate IRS service center for your state.
2. Requesting a Copy of Your State Tax ID Certificate
State processes vary widely. Most states have an online portal where you can download a copy of your state tax ID certificate. Check your state's Department of Revenue or Secretary of State website. If online access isn't available, you may need to submit a formal written request to the state agency.
3. Requesting IRS Tax Account Transcripts
If you need a record of past tax filings, you can request a transcript online through the IRS's “Get Transcript” tool, by phone, or by mail using Form 4506-T[reference:16].
Formal Letter Template for Requesting Tax ID Documents
Below is a template you can adapt for requesting copies of your business tax ID documents from the IRS, a state agency, or a third-party representative. Choose the appropriate sections based on your situation.
[Your Company Letterhead]
[Date]
[Recipient Name or “To Whom It May Concern”]
[Department Name, e.g., IRS Business & Specialty Tax Line / State Department of Revenue]
[Address]
[City, State, ZIP]
RE: Request for Copy of Business Tax ID Documents
Entity Name: [Your Business Name]
EIN: [XX-XXXXXXX] (if known)
State Tax ID: [Number] (if applicable)
Dear Sir/Madam:
I am writing to formally request copies of the following business tax identification documents for the entity identified above:
[ ] IRS EIN Verification Letter (Letter 147C) – to replace lost CP-575 notice.
[ ] State Tax ID Certificate – for [State] sales tax / withholding account.
[ ] Copy of [Year] Filed Business Tax Return.
[ ] Other: [Specify document type]
Entity Information:
- Legal Business Name: [Full legal name as registered]
- Employer Identification Number (EIN): [XX-XXXXXXX, if known]
- State Tax ID Number: [Number, if applicable]
- Business Address on File: [Street Address, City, State, ZIP]
- Entity Type: [Corporation / LLC / Partnership / Sole Proprietorship]
- Date of EIN Issuance: [Date, if known]
Purpose of Request:
[Briefly explain why you need the documents, e.g., “to open a business bank account,” “for payroll provider onboarding,” “to apply for a business loan,” or “for state compliance.”]
Delivery Instructions:
[ ] Please fax the documents to: [Fax Number]
[ ] Please mail the documents to the address above.
[ ] Please email the documents to: [Email Address] (if applicable)
Authorized Representative:
[Name of person authorized to request the documents]
[Title/Role]
[Phone Number]
[Email Address]
I/We authorize [Name of individual or firm, if applicable] to request and receive these documents on behalf of the above-named entity. [If applicable, attach IRS Form 2848, Power of Attorney and Declaration of Representative.]
Thank you for your assistance in this matter.
Sincerely,
[Signature]
[Printed Name]
[Title]
[Entity Name]
[Phone Number]
Enclosures: [List any attachments, e.g., Form 8822-B, Form 2848, etc.]
Alternative subject lines (if sending via email to a third party): “Authorization to Request Business Tax ID Documents – [Entity Name]” / “Formal Request for EIN Verification Letter – [Entity Name]”
Checklist & Best Practices for a Smooth Request
Before you send your request, review this checklist to ensure you have everything you need and to avoid common delays.
- Confirm the correct agency: Are you requesting a federal document (IRS) or a state document (Department of Revenue, Secretary of State)?
- Verify your address: If your address has changed, update it with the IRS using Form 8822-B before requesting a 147C letter[reference:17].
- Have your EIN and business name ready: This is essential for phone requests. If you don't know your EIN, the IRS can locate it using your business name and address.
- Choose the right delivery method: For urgent needs, request fax delivery when calling the IRS. For less urgent needs, mail delivery is acceptable.
- Keep a copy of your request: Save a copy of your letter or note the date and time of your phone call for your records.
- Follow up if you don't receive a response: If you don't receive your documents within the expected timeframe, call the agency to check the status.
What to Do If You Don't Get a Response
If you don't receive your requested documents within a reasonable time, follow these steps.
- If you requested by phone with fax delivery: The letter should arrive immediately or within the same business day. If it doesn't, call the IRS back to confirm the fax number and request that it be resent.
- If you requested by phone with mail delivery: Allow 7-14 business days for delivery. If you haven't received it after two weeks, call the IRS to check the status.
- If you mailed a written request: Processing times can take 4-6 weeks. After that period, call the agency to inquire about the status.
- If you authorized a third party: Follow up with them directly. They should provide you with a copy of the documents once received.
Frequently Asked Questions
Q: Can I request an EIN verification letter online?
A: No. The IRS does not currently offer an online application process for obtaining a 147C letter. You must call the IRS Business & Specialty Tax Line at 1-800-829-4933 or submit a written request by mail[reference:18].
Q: Is a 147C letter the same as a CP-575 notice?
A: Not exactly. The CP-575 is the original EIN assignment notice the IRS sends when you first receive your EIN. If you lose that, the IRS will not issue a duplicate CP-575. Instead, you can request a 147C letter, which serves as official EIN verification and is accepted in place of the CP-575[reference:19].
Q: How long does it take to get a 147C letter?
A: If you request fax delivery during your phone call, the letter can arrive the same day or the next business day. Mail delivery typically takes 7 to 14 business days, though some sources indicate it can take up to 4-6 weeks[reference:20].
Q: Who can request a 147C letter on behalf of my business?
A: The IRS will only provide a 147C letter to authorized individuals, including business owners, corporate officers, partners, LLC members, or authorized representatives with a valid power of attorney (IRS Form 2848)[reference:21].
Q: What if my business address has changed?
A: You must update your address with the IRS before you can receive a 147C letter. File Form 8822-B (Change of Address or Responsible Party – Business) to update your business address. The IRS will only send the verification letter to the address on file[reference:22].