what percentage should your credit card balance not go over?
You don't go from a great score at 20 percent credit utilization to a lousy one at 21 percent. There's no hard-and-fast guideline, Sprauve says. But I think that if people stay somewhere between 10 and 20 percent range, that's a good place to be.. It's still true that you shouldn't go rack up debt on any one card.