Consumers who only make the minimum repayment on their credit card could be paying hundreds of dollars a year in high interest payments. To help, BETA partnered with the Treasury and Westpac to see if reminders could encourage consumers to pay earlier and save money. We found any type of SMS reminder resulted in a $134 (28 per cent) increase in repayments in the following month, compared to those who received no message. However, different SMS messages all had a similar impact and we were unable to detect an effect from sending email reminders. Overall, the findings suggest that sending an SMS reminder to credit card consumers before their payment due date is a simple, cost-effective way to improve their financial wellbeing.