How do you write a letter of explanation for overdrafts in checking?

To write a letter of explanation for overdrafts in checking, begin by clearly stating your account details and the purpose of the letter. Briefly explain the circumstances that led to the overdraft, including any unforeseen events or errors, and take responsibility for the situation. If applicable, mention any steps you’ve taken to prevent future occurrences, and politely request any assistance or leniency from the bank. Conclude with a sincere thank you for their understanding.