Generally speaking, overdraft protection itself -- which is when a bank or other financial institution fronts the money for charges that aren't covered by the funds available in a customer's bank account -- does not affect your credit score.

Does overdraft protection help your credit?

Overdraft protection itself does not hurt your credit, but it can impact your credit if you link your credit card to your checking account or if the overdrawn amount goes to collections. ... When you use credit to cover insufficient bank funds, the situation can get worse if you can't pay off the overdraft costs.

Is it bad to use overdraft protection?

Most consumer advocates recommend against getting overdraft protection for ATM and debit card transactions. ... With overdraft protection, your bank will allow debit and ATM transactions to go through even if you don't have enough funds in your account.