Equifax vs TransUnion: Why Your Credit Scores Don't Match

They're two separate businesses, not two views of one database

Equifax and TransUnion are independent, competing credit bureaus. There's no shared master file that both draw from — each one builds and maintains its own record of you based on information reported to it directly by lenders, collection agencies, and public records.

A credit card issuer or bank isn't required to report to both bureaus. Many report to only one, or to both but on different monthly cycles. So it's entirely possible for a loan, a credit limit increase, or a late payment to show up on your Equifax file weeks before it appears on TransUnion, or not appear on one at all.

Because the underlying data can differ, the scores calculated from that data will differ too, even before you get into how each bureau does its math.

Even with identical data, the scoring formulas aren't the same

Each bureau uses its own proprietary scoring model, and those models weigh factors like payment history, credit utilization, length of credit history, and recent inquiries somewhat differently. Two bureaus looking at the exact same set of accounts can still land on different scores because they're running different math on it.

On top of that, the score ranges themselves can vary slightly between models, and lenders sometimes request an industry-specific version of a score (for example, one tuned for auto lending or mortgages) rather than the general-purpose score you see on a consumer app.

None of this means one bureau is more accurate than the other. They're simply different measuring sticks applied to overlapping but not identical information.

Timing gaps are one of the biggest drivers of the difference

Credit scores are a snapshot, not a running total. If you paid down a credit card balance last week, that lower balance might already be reflected at Equifax but still show the old, higher balance at TransUnion because that lender hasn't reported to TransUnion yet that billing cycle.

This matters most around utilization, the percentage of your available credit you're using, because it's one of the most heavily weighted factors in most scoring models. A stale, higher balance on one bureau's file can drag that particular score down temporarily even though your real financial position has already improved.

• A new account you opened may appear on one bureau's file before the other - A closed account may still show as open on one report for a billing cycle or two - A dispute you resolved with one creditor may take longer to update at one bureau than the other

What to actually do about it

Don't fixate on matching the two numbers exactly, since that's not a realistic goal. Instead, check that both scores fall in roughly the same tier (poor, fair, good, very good, excellent) and treat a large, unexplained gap as a prompt to look closer rather than a crisis.

Pull your free credit report from both Equifax Canada and TransUnion Canada at least once a year, and read through the account list line by line. You're looking for accounts you don't recognize, balances that look wrong, or late payments that don't match your memory, since these are the errors worth disputing.

• If you find an error, dispute it directly with the bureau that shows the mistake - If both bureaus show the same error, it likely originated with the lender, so you may need to contact the lender as well - Keep records of any correction request and follow up if it isn't reflected within a reasonable time

Since you can't control which bureau a given lender will pull, the more useful habit is managing the behaviours that both scoring models reward: paying every bill on time, keeping utilization low, and avoiding a flurry of new credit applications right before you need to borrow. Do that consistently and both scores tend to move up together, even if they never land on the identical number.

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