The impact of text messages (SMS) and reminder calls on response to web surveys was experimentally tested using a crossed design on two surveys in the Quality Indicators for Learning and Teaching suite of studies for the Australian Government Department of Education: the May 2018 Graduate Outcomes Survey and the 2018 Student Experience Survey. SMS and telephone reminders were associated with increased probability of response for both surveys. Telephone reminders were more effective than SMS on a per-contact basis. However, taking into account the higher cost of a reminder call than a reminder SMS, sending an SMS reminder was more cost-effective. This research adds to the limited literature on the effectiveness of reminder calls and SMS for surveys.