Your loan book has a smoke detector. It's the delinquency ratio, and it goes off before the fire does.
Every loan you make carries the quiet chance it goes bad. The delinquency ratio is the running tally of how many already have, expressed as a share of what you've lent. It's the cheapest early-warning radar you own, and you already file the numbers to build it every quarter.
Read it early and you get room to move. Ignore it and you find out the hard way, one charge-off at a time.
What it measures
Delinquency measures the slice of your loan portfolio that borrowers have stopped paying on time. It's your first read on asset quality, the "A" in CAMELS. Not the loans you've lost yet. The loans that are drifting.
Here's the one fact people get wrong all the time, so get it right. NCUA measures credit-union delinquency at 60 or more days past due. Not 90. Ninety days is the common bank and GAAP figure, and folks import it by habit. For your Call Report and your FPR, the line is 60+ days. Say it correctly and you'll already sound sharper than half the room.
The formula
Delinquent loans divided by total loans, times 100.
That's it. Delinquent balances (60+ days past due) over total loans outstanding, turned into a percent.
What good looks like: low, often under 1%, though it genuinely varies by what you lend. A card-heavy consumer shop and a mortgage shop won't look alike, and they shouldn't.
Red flags: a rising trend, a level above your peers, or a nasty concentration in one loan type. A 1.2% spread evenly across a diversified book reads very differently than a 1.2% that's all sitting in indirect auto. Examiners notice where the trouble clusters.
Levers: underwriting standards on the front end, real collections and workouts on early-stage delinquency, and sensible concentration limits.
A quick word on cousins, so you don't confuse them. Net charge-offs are the loans you actually wrote off. Delinquency is the warning; charge-offs are the bill. And delinquent loans divided by net worth stacks your problem loans against your capital cushion, which is a different question again. Keep them straight.
How to read yours
One number on one day tells you almost nothing. Is your number good? Depends. Good compared to what? Compared to last quarter? Compared to a mortgage lender or a payday-adjacent consumer lender? Compared to you a year ago?
That's the whole game. You read delinquency three ways, and you always read it against context.
First, watch the trend, not the snapshot. A flat rate is one story. A rate climbing over three quarters is a different story, and the second one matters more. Direction beats level.
Second, judge against peers your own size and lending mix, not the whole field. Comparing your indirect-auto book to a plain-vanilla mortgage shop tells you nothing useful. Similar lenders, similar answer.
Third, fix the driver, not the number. If the whole rise sits in one loan type, that's where your collections push and your concentration limit go. Chase the cause, not the decimal.
That peer read is exactly where CU411 earns its keep. It puts your delinquency ratio next to credit unions your size and shows you the peer Average, Median, Min, and Max right beside your own figure. So "is my number good?" stops being a guess and becomes a picture.
What is a good delinquency ratio for a credit union?
There's rarely one universal number that means "good." A low ratio, a stable or falling trend, and a level in line with lenders like you: that's what good looks like. The right read is always relative.
This article is educational and not regulatory, accounting, or investment advice. For definitions and thresholds, rely on your NCUA Call Report instructions and your examiner.
Want to see where your delinquency ratio sits against credit unions your size, with peer Average, Median, Min, and Max right there in the row? Pull it up in CU411. The free Quick Glance gives you a taste; the full FPR Key Ratios report holds this ratio and the rest of the A-for-asset-quality set. Or poke a real profile first.
For the bigger picture, learn how to read your NCUA FPR and where delinquency fits in the asset-quality letter of a CAMELS-style screen. Then read across to two ratios that move with this one: your net worth ratio (the cushion that absorbs bad loans) and your loan-to-share ratio (how hard you're lending in the first place).