Here is a little test you can all do. Have a couple of your cards close with a small balance and then check your real FICO score. Next month have all your cards report with a zero balance and check your real FICO score again. See for yourself how it works.
If you tested then you are probably correct in the short term (if you checked all three scores and they were all higher), but how would you know if in the long run 0 every month helps or hurts your score...
Here's my
theoryI think the small balance ON ALL CC'S TOGETHER is better than 0 across the board came from DDF boards and other blogs. The other question is how they come up with FAKO scores. Let's say credit karma does a study and out of a large number of people, the average score of 1% to 20% utilization came out highest of all brackets, 2nd highest would be 20-40%, 3rd 40-60% 4th 60-80% then 0% comes out lower than all of these, 6th place would be 80-100% and 7th would be over 100% (I guess it is theoretically possible to be over 100). Obviously they would mathematically isolate it as in ppl with similar other aspects of credit report would be grouped together.
It's also known that each bureau has a different way to compute your score, so my
opinion based on theory + CV's new info that 0 is better for your score would be to end with a high balance in months that you are not applying and low or 0 balance on months that you are. I would think that the fact that one had a high balance in past but paid it off would for sure not hurt credit score and very likely help.