BACKGROUND: Gambling is connected to important financial harms, including debt. Most existing research has investigated the relationship between gambling and debt using self-reported data. Only a few studies have used objective data. The current study focuses on the gambling of indebted individuals. It investigates the amounts and types of gambling consumed by indebted individuals, and the amounts of unsecured debt among heavy gamblers.

METHODS: We use past-year banking data of Finnish individuals (N = 23 231) collected between 2018 and 2021 among applicants to a debt consolidation service. The transactions consist of deposits to, and winnings paid by gambling operators, distinguished by type of gambling (sports betting, casino, lottery) as well as active loans divided into secured and unsecured loans.

RESULTS: Gambling is widespread among indebted individuals in Finland. In terms of gambling types, casino-type gambling is the most popular among indebted individuals. Gambling spending is highly concentrated. Nearly half (49.5%) of all gambling deposits are concentrated among the highest spending 5% of indebted individuals. Individuals with unsecured loans have higher median losses than those without unsecured loans.

CONCLUSIONS: The results suggest that gambling and indebtedness are strongly linked. The connection is stronger for individuals with unsecured debt. This has implications for prevention and treatment. Easy access to unsecured credit is likely to worsen gambling harms. Debt counselling services routinely encounter gambling-related harms and need to be equipped to manage these issues.