How to read the payment history grid on your credit report

Every account on your credit report carries a strip of boxes, one per month, usually laid out by year. Most of them say something boring. One or two might say 30 or 60, and those are the ones that cost you.

People skim this grid, see a sea of OK, and move on. That’s how errors survive for years. The grid is the most detailed record of your payment behavior anywhere in your file, and it’s also where reporting mistakes are easiest to prove, because the months have to make sense in sequence.

Where the boxes come from

Lenders, which the law calls furnishers, send account updates to the bureaus in a standard electronic format called Metro 2. The CFPB’s 2012 review of the credit reporting system says furnishers typically send those updates monthly in batch files, and that each account’s base record “contains up to 24 months of the consumer’s payment history on the account.”

So each box is a status the lender reported as of that month’s update. It isn’t a timestamp of when your payment arrived. If you paid on the 28th and the lender reported on the 25th, that month reflects where you stood on the 25th.

Metro 2 lets a lender report delinquency in steps, from 30 to 59 days past due up through 180 days or more, plus final statuses such as charge-off, repossession, voluntary surrender and foreclosure, according to the same CFPB paper.

What the codes mean

TransUnion publishes its account ratings key, and it’s a good reference because the labels are plain.

TransUnion says some but not all of these ratings may appear on any one report.

Watch for two traps. First, CO means collection on TransUnion’s key, while plenty of people (and some other reports and apps) use CO as shorthand for charge-off. Don’t guess. Read the legend printed on the report you’re holding. Second, Experian and Equifax use their own symbols, colors and abbreviations, and the free monitoring apps reformat everything again. The underlying status is the same, just displayed differently.

Reading a row: a worked example

Example. Say your TransUnion report shows this row for a credit card:

Read left to right. One payment was missed and hit 30 days past due by the April update. In May and June, the card was still one payment behind, most likely because each month’s payment covered that month but never caught up the missed one. In July it was brought fully current.

That pattern is called a rolling late, and it reads as three separate 30-day lates rather than one. Paying two installments in May would have stopped it at one. The mechanics of how delinquency stacks up are in 30, 60 and 90 days late.

FICO looks at payment history in terms of how late payments were, how much is owed on delinquent accounts, how recently they happened, and how many there are. This row has three lates, none worse than 30 days, the most recent in June 2025. The CFPB says most negative information can generally be reported for seven years, so these marks can stay into 2032. The drop-off calculator does that date math for your own accounts.

Patterns that point to an error

The grid has an internal logic. A delinquency can only age about 30 days per month, because each update is roughly a month apart. That makes some sequences suspicious on their face.

A jump can have an innocent explanation, such as a lender that missed sending two monthly updates. It can’t be correct in every month at once, though. Either the earlier OK was wrong or the later 90 was. That’s exactly the kind of inaccuracy the dispute process exists for. Gather your statements and bank records and use the steps in how to dispute a credit report error.

If the late is accurate, disputing it won’t remove it and isn’t the right tool.

Blank boxes, question marks and missing months

A blank, N/R or similar “no data” box means the lender sent no status for that month. It isn’t a late payment, and it doesn’t count against you as one. You’ll often see these before an account opened, after it closed, or for months when a lender wasn’t reporting to that bureau.

A run of blank months on an open, active account deserves a second look, though. If the lender stopped reporting and later resumes with a late, the gap can make the history hard to reconstruct. Keep your own statements for any account that has had trouble.

Why the three grids don’t match

It’s normal for the same account to look slightly different at each bureau. Some lenders report to only one or two of them. Lenders send updates on their own schedules, so one bureau may show a month the others haven’t received yet. And an error can land at one bureau and not the others.

Lenders that pull all three reports, as mortgage lenders do, see all three versions. A late that sits on only one report still counts on the score built from that report. That’s one reason your three scores differ.

What to do with your grid this week

1. Pull all three reports free at AnnualCreditReport.com.
2. For each account, find the legend and confirm what each symbol means on that bureau’s report.
3. Scan every row for any mark other than current. Note the month, the code and the bureau.
4. Check each late against your own records: statements, bank history, forbearance letters, payoff letters.
5. Compare the same account across bureaus month by month.
6. Dispute months that are wrong, with documents. For accurate lates on otherwise clean accounts, a goodwill request to the lender is the honest option.

The rest of the report, from the header to the inquiries section, is covered line by line in how to read your credit report.