Pull your TransUnion report
Before filing, get the full report. Use AnnualCreditReport.com for the free federally mandated copy, or log in to TransUnion's consumer portal at transunion.com. TransUnion also provides free credit monitoring through its own platform and through apps like Credit Karma that use its data. For dispute purposes, you want the full report — not the summary view in a monitoring app.
Note that TransUnion is headquartered in Chicago and operates its consumer disputes through a separate portal than its business services. The consumer dispute portal is at transunion.com/credit-disputes/dispute-your-credit.
How to file a dispute with TransUnion
Online is the most practical path for most consumers. Go to dispute.transunion.com and log in or create an account. TransUnion's online portal lets you select individual items, choose a dispute reason, and upload supporting files. You'll get a confirmation and a case number. Check back using that case number or log in to your account to track status.
By mail is slower but produces the cleanest paper trail for potential legal action. The address is:
TransUnion Consumer Solutions P.O. Box 2000 Chester, PA 19016-2000
Include your full name, address, Social Security number, date of birth, and specific dispute details for each item. Send via certified mail with return receipt. TransUnion's 30-day clock begins when they receive the letter — not when you mail it.
By phone at 800-916-8800 is available but has the same limitations as phone disputes at any bureau. Use it to check the status of a pending dispute, not to file a new one.
Timelines and required responses
TransUnion, like all consumer reporting agencies, must complete its investigation within 30 days under the FCRA (45 days if you submit additional documentation during the review). After the investigation, TransUnion must:
- Notify you of the result in writing
- Provide a free copy of your updated report if a change was made
- Forward the dispute and your documents to the furnisher
- Note in your file that you disputed the item, even if the result was "verified"
Understanding TransUnion's investigation process
Most TransUnion disputes are processed through e-OSCAR, an automated system shared by all three bureaus. Your dispute is coded and sent electronically to the furnisher. The furnisher responds electronically. TransUnion does not independently verify the information — it accepts the furnisher's response as confirmation.
This means a verification result doesn't mean someone at TransUnion reviewed your documents. It means the furnisher sent back a code saying the information was accurate. Furnishers make errors in this process regularly.
What to do when TransUnion says "verified"
Step 1: Request method of verification. Write to TransUnion and ask, under FCRA Section 611(a)(6), for the name, address, and phone number of the person or entity that provided verification. This is your legal right. The response tells you whether an actual review occurred.
Step 2: Dispute directly with the furnisher. Send a written dispute to the creditor or collector that reported the item. Under FCRA Section 623(a)(8), furnishers must investigate disputes sent directly by consumers. This is a separate investigation from the bureau process.
Step 3: CFPB complaint. File at consumerfinance.gov/complaint. Select TransUnion as the company. The CFPB escalates to a dedicated compliance team at TransUnion — a different group than the standard dispute processing queue.
Step 4: Consult an FCRA attorney. If an item is provably wrong and both the bureau and furnisher have verified it, you may have grounds for a lawsuit. FCRA attorneys typically take these cases on contingency. The bureau and furnisher can be liable for actual damages, statutory damages up to $1,000 per violation, and attorney's fees.
Strong evidence accelerates results
Documents that move disputes forward: bank statements showing payment dates, letters from creditors confirming payoff, discharge paperwork from bankruptcy proceedings, police reports or FTC reports for identity theft, and court orders vacating judgments.
Send copies only. Retain originals and a copy of everything you send.
Your next step
Pull your TransUnion report at AnnualCreditReport.com. Go line by line through your accounts section. Look for wrong balances, incorrect late payment history, accounts you didn't open, or duplicate tradelines. File your dispute at dispute.transunion.com and set a day-30 reminder to follow up if you don't receive a resolution.