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How to dispute an item on TransUnion (and why round two matters here)

Written by Marcelo Fernández, Founder of Loosn · Updated August 15, 2026

In short

Send TransUnion a written dispute naming the account as it appears on your TransUnion report and the field you say is inaccurate. Under FCRA Section 611 the bureau has 30 days from receipt to investigate, extendable to 45 days if you supply more information. A round-one 'verified' answer means the record matched what the furnisher reported — which is what round two puts in question.

A first-round dispute is reconciled against the record the furnisher reports. That is why round two asks a different question — for source documentation rather than a record match. You may also dispute inaccurate information directly with the credit bureaus, free of charge. Only the credit bureau or the furnisher can change what appears on your report, and accurate negative information can legally remain.

On this page

  1. Where do you mail a TransUnion dispute?
  2. What does TransUnion have to do under FCRA Section 611?
  3. What does a round-one 'verified' response mean?
  4. How does Loosn write the TransUnion letter?

Where do you mail a TransUnion dispute?

P.O. Box 2000, Chester, PA 19016. Certified mail with return receipt. Same FCRA 30-day clock as Equifax and Experian, anchored by USPS proof of delivery.

What does TransUnion have to do under FCRA Section 611?

30-day investigation, mandatory furnisher contact, delete-or-verify, method-of-verification on request. A dispute that names a specific mismatch between what the furnisher reports and what appears on the file gives the investigation a concrete field to reconcile — that is what Loosn's letters are written to identify.

What does a round-one 'verified' response mean?

'Verified' means TransUnion's matching reconciled the disputed field against what the furnisher reports — not that the furnisher produced source documentation. A dispute that names a single sharp inconsistency — wrong open date, wrong balance, missing original-creditor name — gives the investigation one specific field to reconcile instead of a general objection. Loosn's AI ranks items by which of those inconsistencies it can spot, and writes the dispute to lead with the strongest one. No one can guarantee a removal; outcomes depend on your file and on what the bureau and furnisher can verify.

How does Loosn write the TransUnion letter?

Loosn AI generates a TransUnion-addressed letter citing FCRA Section 611. On verified responses, round two cites Section 623(a)(8) directly to the furnisher AND a second-round bureau letter. On Pro+Auto-Send, Lob.com mails both at your instruction, after you approve each send.

Frequently asked questions

How long does TransUnion take to respond?
30 days from the date TransUnion receives your dispute, extendable to 45 if you submit additional documentation during the investigation — the same FCRA clock as the other two bureaus. Certified mail with return receipt is what proves the start date.
What does a round-one 'verified' from TransUnion mean?
It means the disputed field was reconciled against the record the furnisher reports — not that source documentation was produced. A round-two letter that asks for specific source documentation rather than a record match moves the item out of automated handling and into manual review, where the furnisher has to substantiate what it reports under FCRA Section 611.
Can I see what TransUnion sent the furnisher?
Yes — under FCRA you can request the method of verification, including what TransUnion sent and received from the furnisher. Loosn drafts that request for you when the round-one response is 'verified' and the furnisher provided no source documents; you review and send it.

Related guides

  • How to dispute an item on Equifax (the FCRA Section 611 process)

    Where Equifax disputes go, what Section 611 puts them on the clock for, and what to include so the investigation has something to work from.

  • How to dispute an item on Experian (the FCRA Section 611 process)

    How Experian takes disputes, what the 30-day window covers, and what a method-of-verification request is for.

  • How to remove a collection from your credit report

    What a collection account records, what the furnisher has to be able to substantiate, and what the FCRA lets you ask for.

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Loosn is self-directed software: we provide AI tools and templates that help you exercise your rights under the Fair Credit Reporting Act yourself. You make every decision, you are the sender of record on every letter, and no specific outcome is ever guaranteed. You may dispute inaccurate information directly with the credit bureaus, free of charge.