Companies use several factors to calculate your credit scores. One factor they look at is how much credit you are using compared to how much you have available. In the case of a credit card, they look at the balance you owe compared to your available credit.
See Also
What is the highest credit score? (And can you get it?)Should I Pay Off My Credit Card in Full? | ChaseHow Multiple Credit Card Payments a Month Can Boost Your Credit ScoreIf I pay my credit card early can I use it again?Consistently paying off your credit card on time every month is one step toward improving your credit scores. However, credit scores are calculated at different times, so if your score is calculated on a day you have a high balance, this could affect your score even if you pay off the balance in full the next day.
