The phrase "to hit the limit" means reaching or surpassing the maximum possible amount, capacity, or capability of something.
Sentences with «to hit the limit»
Once you start hitting the limits of your own physicality and your own potential, all the other stuff might come into play. (completehumanperformance.com)
If you're hitting the limit on your credit cards regularly, you're damaging your credit score. (nationalcreditfederation.com)
For both cards, you don't have to worry about hitting a limit for cash rewards. (thedigeratilife.com)