Financial literacy is a person’s ability to understand economic information. People who are financially literate make informed decisions about their finances and know how to accumulate wealth. Frequent gambling can reduce someone’s savings and financial stability. Thus, people who are more financially literate may be less likely to take financial risks by gambling frequently. This study tested for a link between financial literacy, financial education in early school life, and gambling frequency in Japan. Participants who were more financially literate were less likely to gamble frequently. Whether one received financial education in elementary school or not had no impact on gambling frequency. Frequent gambling is linked to gambling-related harms. Thus, promoting financial literacy may reduce the risk of problem gambling.