Here’s why your credit score may drop after paying off debt

WASHINGTON >> The American pastime isn’t baseball anymore. It’s watching how your credit score goes up or down.

And having good credit is definitely worth the effort. If you get a home run with your credit score, it can help you qualify for a better mortgage or signal to a landlord that you’ll pay your rent on time. Those zero percent autoloan offers go to the folks with the highest credit scores, too.

But here’s the thing. There is so much we don’t know about how exactly credit scoring works. The companies that have created the scores that measure our credit worthiness have allowed us only a limited peek at the factors they use, so we often don’t really know exactly what it takes to hit it out of the park where a credit score is concerned.

If I may torture the baseball metaphor a bit more, here’s what we do know.

The basic FICO score, which is the model most used by lenders, has a range that starts at a low of 300 and goes to a high of 850. VantageScore, the scoring model created by the three major credit bureaus, has the same range.

Getting a perfect 850 score — the equivalent of a grand slam — involves paying off your bills on time for decades, keeping your debt utilization low (if not at zero), and having a long credit history. You also need to show you can handle a mix of credit — such as having credit cards, retail accounts and mortgage loans. To get the top score, you also can’t be opening a lot of new credit accounts.

As with baseball, credit scoring is a numbers game. But, also like baseball, you can be a solid player without being perfect. Once you get in the mid and high 700s, you’re considered an excellent credit player.

However, a lot of consumers want to master the FICO game. The result is that they yell “foul ball” when they make a credit move that may lower their credit score, even if temporarily.

I recently wrote a column that debunked a credit myth. Some consumers incorrectly believe that you need to carry a credit card balance to increase your credit score. You do not. But the discussion about this myth turned to an irritation about something else in the credit game.

“I was paying off the previous month’s balance on my one credit card every month for years, and my credit score (per the bank) stayed in the high 700s, every month, for years,” a reader wrote. “Then recently I had to carry a balance for a couple of months, but still paid the minimum due, and my score shot up to the low 800s. Every