Yeah I don't know how it works with people with mega credit, but about 2 years ago I had about 90K of available credit and on a monthly basis at most I would use 4K or so before payoff. I closed a card since then to avoid the annual fee that I only had open for the available credit, and another card that I also only had open for the same reason dropped me from a 30K limit to 10K due to not using it. With the same utilization my score dropped a few points due to the increased ratio, even though the ratio is still "good".I think it's all a secret and no one really knows.... I hate to say "I heard" but I understand that having too much available credit can also be seen as a negative. Who really knows ?![]()