maybe not part of your credit score is determine by debt outstanding on CC's vs total credit line on all credit cards
say on one credit card with a credit limit of 5000 you had 1000 outstanding
on another with a credit limit of 4000 you had 2000 outstanding
on a third with a credit limit of 1000 you had 100 outstanding
total outstanding 3100 credit limit 10000 utilization 31%
say you pay off the 100 CC and close it
total outstanding 3000 credit limit 9000 utilization 33.33% a higher utilization which could result in a lower credit score. How big of a hit I can't tell you.
but ask yourself this question does a lower credit score really matter - i can name a few where it could - buying or leasing a car, buying a home (the mortgage rate), maybe renting a new place to live.
see this
https://www.experian.com/blogs/ask-experian/how-is-a-fico-score-calculated/
other rating agencies use different formulas and i never seen 1 published so I could do my own computations.
also realize that rating agencies don't always have the same info.
thus your credit score will vary from 1 agency to another.
even a person with no debt does not get the highest score. as a matter of fact the highest score may not be obtainable by anyone. with no debt there is no payment history a major factor in the computation.
best is o lower debt to the point you have a card or cards with no fees that you pay off in full each month.
