TransUnion is one of three major credit reporting companies that calculate and sell your credit score

TransUnion is a credit reporting agency — one of the "big three" alongside Equifax and Experian. It collects information about your payment history, debts, and credit accounts, then uses that data to calculate a credit score. Lenders, landlords, and employers buy these scores to decide whether to lend to you, rent to you, or hire you.

TransUnion does not decide whether you get credit. It only measures your past credit behaviour and sells that measurement to decision-makers. Your score with TransUnion may differ from your Equifax or Experian score because each agency has slightly different data about you — not all creditors report to all three bureaus.

You can see your TransUnion score for free once per year through AnnualCreditReport.com, which is the only federally authorised site for free reports. You can also buy your score directly from TransUnion, though many credit monitoring services include it.

Key Takeaways

  • TransUnion is one of three major credit bureaus that collect your financial history and calculate a score lenders use to assess risk.
  • Your TransUnion score may be different from your Equifax or Experian score because not all creditors report to all three bureaus.
  • You can view your TransUnion credit report free once per year at AnnualCreditReport.com, the official government-authorised site.
  • TransUnion scores typically range from 300 to 850, with higher scores indicating lower risk to lenders.
  • Late payments, high debt balances, and collections accounts lower your TransUnion score; on-time payments and low balances raise it.

How TransUnion collects information about you

TransUnion gathers data from creditors, lenders, and public records. When you open a credit card, take out a loan, or miss a payment, that information flows to TransUnion (if the creditor reports to them). Court records, like judgments or tax liens, also appear in your file.

Not every creditor reports to TransUnion. Some smaller lenders, utility companies, or local businesses may not. This is why your TransUnion report may show different accounts than your Equifax or Experian report. Medical debt, for example, often takes weeks to appear on any bureau's report, and some medical providers never report it.

TransUnion keeps records for seven years in most cases. Paid-off accounts stay on your report; negative marks like late payments or collections fall off after seven years from the date of first delinquency.

What goes into your TransUnion score

TransUnion uses a scoring model — most commonly VantageScore or FICO — to turn your credit history into a three-digit number. The exact weights vary by model, but the main factors are:

  • Payment history — whether you pay on time (typically 35–40% of your score)
  • Credit utilisation — how much of your available credit you are using (typically 20–30%)
  • Length of credit history — how long your oldest account has been open (typically 15%)
  • Credit mix — whether you have different types of credit, like cards, loans, and mortgages (typically 10%)
  • Recent inquiries and new accounts — hard inquiries and newly opened accounts (typically 10%)

A single late payment can drop your score by 50 to 100 points depending on how recent it is and how high your score was before. Maxing out a credit card can drop it by 10 to 45 points. Building the score back up takes months or years of on-time payments and lower balances.

TransUnion score ranges and what they mean

TransUnion scores run from 300 to 850. The higher your score, the lower the risk you appear to lenders. Most lenders have cutoffs — they may approve mortgages only for scores above 620, or credit cards only for scores above 650.

Score ranges are not officially defined by TransUnion, but lenders typically use these rough bands: 300–579 is considered poor; 580–669 is fair; 670–739 is good; 740–799 is very good; 800–850 is excellent. Your actual approval odds depend on the lender's own rules, not just your score.

A score of 700 or above generally opens doors to better interest rates and terms. Below 620, many mainstream lenders will decline you or charge significantly higher rates. Some lenders specialise in lower scores but charge much more.

How to get your free TransUnion credit report

You have the right to one free credit report per year from each of the three bureaus under federal law. Go to AnnualCreditReport.com — this is the only official site. You will answer security questions to verify your identity, then download your report as a PDF.

Your free report from AnnualCreditReport.com does not include your score — only your report. If you want your actual TransUnion score, you can buy it from TransUnion directly, or you can use a free credit monitoring service that includes it (though these often come with ads or upsells).

You can request your free report from all three bureaus at once, or space them out over the year. Spacing them out lets you monitor for fraud more regularly. If you spot errors on your TransUnion report, you can dispute them directly with TransUnion by mail or online.

Why your TransUnion score might differ from other scores

You may have three different credit scores — one from each bureau — and they can vary by 50 points or more. This happens because creditors do not all report to all three bureaus. A credit card company might report only to TransUnion and Experian, while a car loan company reports only to Equifax and TransUnion.

The scoring model also matters. TransUnion may calculate your score using VantageScore, while a lender uses FICO. These models weight the same data differently, so the same report can produce different scores. A lender may also use an industry-specific score — a mortgage lender might use a mortgage FICO score, which weights payment history differently than a general FICO score.

For this reason, checking only your TransUnion score gives you an incomplete picture. Many people monitor all three bureaus to catch errors and understand how different lenders might see them.

Errors on your TransUnion report and how to dispute them

Mistakes happen. A payment might be reported as late when you paid on time, or an account might appear that is not yours. If you spot an error on your TransUnion report, you can dispute it for free.

TransUnion accepts disputes by mail, phone, or online through its website. You will need to describe the error and provide any supporting documents — a cancelled check, a bank statement, or a letter from the creditor. TransUnion has 30 days to investigate and respond. If the error is confirmed, TransUnion will correct it and send you an updated report.

If TransUnion does not fix the error, you can file a complaint with the Consumer Financial Protection Bureau (CFPB), which oversees credit bureaus. You can also dispute the same error with the creditor who reported it — they may correct it on their end, which then flows to TransUnion.

Frequently Asked Questions

Is my TransUnion score the only score lenders see?

No. Most lenders pull reports from all three bureaus or choose one based on the type of loan. A mortgage lender might pull all three; a credit card issuer might pull only one. You will not know which bureau a lender uses unless you ask.

Can I improve my TransUnion score quickly?

No single action raises your score fast. Paying down high credit card balances can help within a month or two, but major improvements take time. On-time payments over months and years are the most reliable way to build a higher score.

Does checking my own TransUnion score hurt it?

No. Checking your own report or score is a soft inquiry and does not affect your score. Only hard inquiries — when a lender checks your credit as part of a lending decision — can lower your score slightly.

What if TransUnion has no file on me?

If you have never borrowed money or used credit, TransUnion may not have a file. You cannot have a score without a credit history. Opening a credit card or becoming an authorised user on someone else's account can start building your file.

How long do negative marks stay on my TransUnion report?

Late payments, collections, and charge-offs stay for seven years from the date of first delinquency. Bankruptcies stay for seven to ten years depending on the type. Hard inquiries fall off after two years. Paid-off accounts stay indefinitely but stop hurting your score over time.