How a late payment affects your credit score, using FICO's own numbers

The cruelest part of a late payment is who it hurts most. Someone with a long, spotless record and a score near 800 can lose more points from one 30-day late than someone in the low 600s who has missed payments before. That feels backwards until you see how the scoring model reads a file.

You’ve probably seen forum posts claiming a single late cost someone 40, 90 or 180 points. Those posts describe real experiences, but each one is one file at one moment. FICO doesn’t publish a point table, so the most honest numbers available are the illustrative examples FICO itself has published. This page walks through those, then explains the mechanism behind them.

What FICO’s own example shows

In 2019, FICO researchers simulated how several common actions would change FICO Score 9 for a handful of made-up credit profiles. myFICO publishes two of those profiles side by side. Here they are, with the drop calculated from each starting score.

The drop columns are simple subtraction: 793 minus 730 is 63, and 793 minus 710 is 83. For Sophia, 607 minus 590 is 17 and 607 minus 570 is 37.

FICO attaches two caveats. The research covered “select consumer credit profiles,” and FICO says results may vary beyond what’s in the table. Treat these as a picture of the pattern, never as a forecast for your own file.

Why the cleaner file falls further

FICO’s explanation is short: Sophia’s 607 “already reflects her riskier past behavior of missed payments,” so one more late is less significant to her score. Maria’s 793 is built on the absence of any trouble. A first delinquency changes that story far more than a second or third one changes Sophia’s.

Think of a score as a summary of how risky your file looks compared with other files. When nothing negative exists, a new 30-day late is the single most informative thing in the file. When delinquencies are already present, the model has priced much of that risk in.

FICO’s longer write-up on the same research adds a third character, a young borrower with only two accounts and two years of history. FICO says he was hit hardest by missed payments, because a thin file has little positive information to soften one negative item. If you’re new to credit, a late payment carries extra weight for you.

None of this means a second late is harmless for someone like Sophia. Lenders read the whole report as well as the score, and a pattern of lates tells an underwriter something a single slip does not.

The four things FICO weighs about each late

myFICO’s payment history page lists what goes into this part of your score, which FICO weights at 35% for the general population. For late payments, four details stand out:

• How late. A 90-day delinquency counts more than a 30-day one, which is what the table above shows.
• How recent. FICO says the older a credit problem is, the less it counts toward your score.
• How many. The number of past-due items on your report matters, and so does the number of accounts paid as agreed.
• How much. The amount still owed on delinquent accounts or collections is part of the calculation.

FICO also says an overall good credit history can outweigh one or two late credit card payments. That is a statement about the long run. Right after a late posts, the drop can still be steep, as Maria’s numbers show.

What doesn’t count as a late payment

Paying a few days after the due date usually costs you a late fee and maybe a lost promotional rate, but not a mark on your credit report. Experian says late payments are reported once you’re at least 30 days past the due date. The details of that 30-day line, and how to check whether a payment crossed it, are in when a late payment actually gets reported.

That 30-day line is also why the first month is your best chance to limit the damage. A payment that’s 12 days late can still be fixed before it ever reaches a bureau.

Why your app shows a different drop than FICO’s example

Your own number can differ from FICO’s illustration for four reasons:

1. Different score versions. FICO’s example used FICO Score 9. Lenders use many versions, including older mortgage scores, and each weighs things a little differently. See which FICO versions lenders use.
2. Other changes in the same month. If your card balance jumped or a new account opened around the same time, the score change you see blends all of it.
3. VantageScore. Many free apps show VantageScore, which is a different model. Its reaction to a late won’t match FICO’s examples.
4. The rest of your file. Account count, age and utilization all shape how much one late moves the score, as FICO’s research shows.

Your score report will usually list a reason code tied to delinquency when a late is dragging your score. The score decoder translates those codes into plain English.

What to do if a late just hit your report

1. Check that it’s accurate. Confirm the month, the account and the days-late figure on each bureau’s report. A late reported in error is something you have a right to dispute.
2. Get the account current now. If you’re still behind, every additional month can add a worse entry. How 30, 60 and 90-day lates escalate explains the ladder.
3. Keep every other account clean. In FICO’s simulation, the gap between the 30-day and 90-day rows was 50 points for Maria. Stopping the slide is worth more than anything else you can do this month.
4. Lower card balances if you can. In the same FICO research, cutting revolving balances by 25% raised both example scores. That is the one lever that can show up on your next statement.
5. Then work on recovery. Recovering from a late payment covers goodwill requests, timing and what to expect month by month.

FICO’s examples illustrate a pattern. Anyone quoting you the exact number of points your late will cost, or how many points you’ll get back, is guessing.