Such a move can lower your credit score if you carry balances on other cards. (gobankingrates.com)
Lose a big chunk of available credit through a card closure and suddenly your utilization will go up if you are carrying balances on other cards — and your score will go down. (creditcards.com)
Tip: If you're carrying balances on other credit cards, aim to use 30 % or less of your available credit to keep your score on the right track. (mybanktracker.com)