The Power of Credit Migration: Distinguishing Between Bad Loans and Misunderstood Opportunities
In credit risk, we’ve been trained to trust the score. It’s clean, simple and easy to compare. But it’s also incomplete. Ask yourself, is this B score a declining A or a rising D?
A credit score is just a snapshot. It tells you where someone is today, but nothing about where they’re headed. And that gap is where a lot of risk (and opportunity) hides.
That’s why credit migration matters. It shifts the focus from a static number to movement over time. Once you start looking at direction instead of just position, the picture changes quickly.
Risk Isn’t a Score—It’s a Story
Two borrowers can have similar scores and represent completely different situations:
- Ruth (The Stable B): steady, consistent, low drama. She’s exactly what her score says she is and will remain that way over the course of her loan.
- Henry (The A+ in Decline): looks strong on paper but recently lost his job and has not changed his lifestyle. As his unsecured loans increase, his score declines and shows downward movement months before his loans become delinquent.
- Liz (The Newcomer): no credit history but recently got a job and financed a new car, now improving fast.
- John (The Comeback): used to be high risk, now turning things around with stable income, better habits and improving credit status.
If you’re only looking at scores, Henry looks like your best borrower. In reality, he may be your biggest problem.
Meanwhile, John and Liz, who still might not “look great” on paper, are often a better long-term bet.
That’s the core idea: direction matters more than the number.
Most Defaults Follow a Pattern
Defaults usually aren’t surprises. They follow a path. You just have to be watching for it:
- Things are stable
- Something happens and circumstances change (job loss, medical issue, etc.)
- Spending shifts to unsecured credit to cover the gap
- Unsecured loan balances increase while the credit score begins to drop
- Credit runs out, resulting in loan default
Most traditional models catch this at the end of the cycle. Credit migration helps you see it in the middle, when there’s still time to do something about it.
That could mean restructuring, outreach or just getting ahead of the problem instead of reacting to it.
Where the Real Risk Actually Sits
One of the biggest takeaways from migration data is how concentrated losses really are - it’s not spread evenly across the portfolio. It’s heavily tied to loans that are getting worse.
In fact, 60-80 percent of losses come from deteriorating loans, while improving loans barely contribute at all.
That has real implications.
Traditional reserve models don’t always reflect this. They tend to overestimate risk in stable accounts and underestimate it in the ones quietly sliding in the wrong direction.
When you adjust for migration, reserve requirements often drop, sometimes significantly, freeing up capital that can actually be used to grow.
Growth Opportunity Hiding in Plain Sight
The flip side of this is just as important.
People like John (The Comeback) and Liz (The Newcomer) are easy to miss if you’re only filtering by score. But they’re often some of your best opportunities.
They’re improving. They’re engaged. And when you recognize that early, you can build a stronger relationship by:
- Offering the right products at the right time
- Rewarding positive behavior
- Building long-term loyalty
These are the members who tend to stay with the credit union and refer others when they feel understood and supported.
Putting It Into Practice
You don’t need a complicated overhaul to start using this method. It comes down to a few simple shifts:
- Locate: Find members early who are clearly improving or declining.
- Engage: Use that insight to have more relevant conversations.
- Educate: Focus on helping them move forward, to improve their financial condition.
- Promote: Initiate the appropriate steps to improve and enhance their relationship with the credit union. Ask your best members to refer their friends and coworkers - don’t assume they will.
It’s less about static scores and more about using better signals.
Solutions that Serve
Need assistance determining those signals and implementing migration tactics…and beyond? The TCT suite of services through Vizo Financial and TCT Risk Solutions can help.
As credit concerns and loan portfolio management become increasingly complex, the Vizo Financial and TCT Risk Solutions partnership provides tools, support and education that bring clarity and stability to credit union finances.
Explore the suite now.
The Bottom Line
A credit score isn’t useless, but it’s not enough.
If you’re only looking at where someone is today, you’re always going to be reacting late. When you start paying attention to where they’re going, you can act earlier and more effectively.
At the end of the day, losses come from deterioration, and value comes from improvement.
The question is whether you’re set up to see the difference.
Randy Clifton Thompson is the founder and president/CEO of TCT Risk Solutions, where he has dedicated his career to developing innovative tools that help credit unions thrive. With over 12 years in bank lending and more than 40 years working with credit unions, Randy brings unmatched expertise in training, strategic planning and statistical analysis to support credit union success.