TransUnion Dispute Address: Where to Mail Your Credit Report Dispute in 2026
The correct mailing address for TransUnion credit report disputes is TransUnion LLC, Consumer Dispute Center, P.O. Box 2000, Chester, PA 19016. Send your dispute letter by certified mail with return receipt requested. TransUnion must begin its investigation within 30 days of receiving your dispute under 15 U.S.C. § 1681i(a)(1).
TransUnion Dispute Mailing Address
TransUnion LLC
Consumer Dispute Center
P.O. Box 2000
Chester, PA 19016
Always use certified mail with return receipt (USPS Form 3811). The return receipt proves the date TransUnion received your dispute, which starts the 30-day investigation clock under the Fair Credit Reporting Act. If TransUnion fails to investigate within 30 days, it may be liable for damages under the FCRA.
TransUnion Dispute Phone Number
You can also file a dispute with TransUnion by calling 1-800-916-8800. Phone disputes are faster but create no paper trail. If your dispute involves identity theft, a mixed credit file, or accounts that don’t belong to you, we recommend mailing a written dispute first to preserve evidence for a potential FCRA lawsuit.
A phone dispute is best used after you have sent Transunion one or more written disputes. That way you can ask the person on the phone to verify the dispute and documents were received, that they did an investigation, and ask for an explanation as to why it came out the way it did.
Online Disputes: Why We Don’t Recommend Them
TransUnion offers an online dispute portal. However, most online dispute portals include arbitration agreements in their terms of service. Signing an arbitration agreement may prevent you from filing an FCRA lawsuit in court. If you believe your credit report errors are serious enough to warrant legal action, do not use the online portal.
Online disputes do not offer any way to prove what you entered. You are trusting the company who has messed up your credit report to maintain what you typed in online.
What to Include in Your TransUnion Dispute Letter
Your dispute letter should include:
- Your full legal name, Social Security number, and date of birth
- Your current address and all addresses from the past two years
- A clear description of each error, identifying the account by name, number, and the specific information that is wrong
- A statement of what the correct information should be
- Copies (not originals) of supporting documents — account statements, police reports, identity theft affidavits, or court records
- A copy of your government-issued photo ID
- A second form of ID – a current utility bill or statement that contains the same address as your ID
- A copy of your social security card
What Happens After You Send Your Dispute
Under the FCRA (15 U.S.C. § 1681i), TransUnion must investigate your dispute within 30 days of receipt. This may be extended to 45 days if you provide additional information during the investigation period. TransUnion is required to forward your dispute to the furnisher (the company that reported the information), and the furnisher must conduct its own investigation. If the information cannot be verified, TransUnion must delete it. TransUnion must send you written results within 5 business days of completing its investigation.
When to Contact an FCRA Attorney
Consider consulting an attorney if TransUnion fails to investigate within 30 days, verifies information you know is wrong, or re-inserts deleted information without notifying you. Under the FCRA, consumers can recover statutory damages of $100–$1,000 per willful violation, actual damages for negligent violations (including denied credit, higher interest rates, and emotional distress), and attorney’s fees. There is no cost to consult with our office about a potential FCRA case.
Frequently Asked Questions
How long does TransUnion have to respond to my dispute?
TransUnion must complete its investigation within 30 days of receiving your dispute. This deadline may extend to 45 days if you submit additional information during the investigation period. 15 U.S.C. § 1681i(a)(1).
Should I dispute by mail or online?
Mail, using certified mail with return receipt. Online dispute portals typically include arbitration agreements that may prevent you from suing TransUnion in court if the dispute is not resolved properly. Certified mail creates a paper trail that proves when TransUnion received your dispute and starts the 30-day clock.
What if TransUnion doesn’t fix the error after my dispute?
If TransUnion verifies inaccurate information or fails to respond within 30 days, you may have a claim under the Fair Credit Reporting Act. An FCRA attorney can evaluate whether the violation was willful (statutory damages of $100–$1,000 per violation plus punitive damages) or negligent (actual damages plus attorney’s fees).
Can I dispute with all three credit bureaus at the same time?
Yes. Each credit bureau — TransUnion, Equifax, and Experian — maintains its own records independently. If the same error appears on reports from multiple bureaus, you should dispute with each one separately. Send each dispute by certified mail to the correct address.
What is a mixed credit file, and how do I dispute one with TransUnion?
A mixed credit file occurs when another person’s credit information appears on your report — often someone with a similar name, Social Security number, or address. TransUnion mixed files are common and can cause serious damage to your credit score. Dispute by mail with documentation proving your identity, and consult an FCRA attorney if TransUnion fails to separate the files within 30 days.