Equifax Dispute Fax: (866) 233-5544 — Verify First

Quick answer: Do not assume (866) 233-5544 is the correct fax for your Equifax credit-report dispute. Equifax’s current public instructions emphasize online, phone, or mail. They do not publish that number as a universal consumer dispute fax line.

If a recent Equifax letter prints a fax number for your case, use that notice. Otherwise use an official channel below.

Is (866) 233-5544 an Equifax dispute fax number?

The number appears on third-party websites and older materials, which is why people search for it. However, a number appearing in search results does not prove that it still reaches the correct Equifax department.

Before sending sensitive identity documents:

1. Check the latest letter or dispute form Equifax sent you.
2. Confirm that the notice explicitly accepts fax submissions.
3. Confirm the department and fax number match your type of dispute.
4. If no fax number is provided, use the official online, phone, or mail option.

Credit-report disputes, employment-data disputes, fraud alerts, and disputes sent directly to a lender may use different departments. Never send documents to a number solely because it appears in an unofficial directory.

Official ways to dispute Equifax credit-report information

Online

Use the official Equifax dispute center and sign in to myEquifax. Online submission is usually the most direct option when you can access your account.

By phone

Equifax currently lists 1-888-EQUIFAX (1-888-378-4329) for consumer assistance. Check current hours on the official contact page.

By mail

Equifax’s official mail-dispute instructions currently list:

Equifax Information Services LLC
P.O. Box 740256
Atlanta, GA 30374-0256

Verify this address on the current Equifax mail-dispute page or the form you downloaded before mailing.

What to include in an Equifax dispute letter

A complete packet helps Equifax identify you and understand the correction requested:

• Full legal name, current address, date of birth, and identifying details requested on the official form
• Equifax report confirmation number, if available
• The creditor, account, or entry being disputed
• A concise explanation of what is inaccurate and what correction you want
• Copies of supporting records—never send originals you cannot replace
• Copies of identity and address documents requested by Equifax

Keep a complete copy of everything you submit.

If your Equifax notice specifically tells you to fax

If your current letter provides a fax number, you can send the packet without owning a fax machine:

1. Combine the dispute letter and supporting copies into one PDF.
2. Enter the exact number shown on your notice in the RonFax send form.
3. Review the destination and page count before payment.
4. Save your transmission-status link and receipt.

You can also attach the PDF to an email sent to fax@ronfax.com and put the 10-digit number from your notice in the subject line. See the email-to-fax guide.

What happens after submitting a dispute?

Equifax states that many dispute investigations are completed within 30 days, although timing can vary. Keep your confirmation and use the same official channel to check progress. A fax transmission confirmation proves the document was transmitted; it does not by itself prove that Equifax accepted or resolved the dispute.

Related credit & agency fax guides

• Experian credit dispute
• TransUnion credit dispute
• Capital One dispute fax

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Use current official Equifax instructions. If your notice provides a fax number, verify it before transmitting sensitive documents.