Progress towards pay equity between men and women in the Australian economy stalled during the COVID-19 pandemic, highlighting once again the gendered impact of the pandemic. However, little is known about the impact of the pandemic on the gender pay gap in the platform economy. Drawing on data from an Australian survey of platform workers (n = 947) during the early months of the pandemic (2020), this research investigates how the pandemic impacted the gender pay gap across different platform types—care, delivery and driving, microwork, and marketplace—and the platform economy overall. The findings show that the gendered segregated nature of platform work compounded by the uneven impact of the COVID-19 pandemic on particular types of platform work increased the pay gap between men and women. This research also sought to examine the mechanisms behind the gender pay gap, finding that human capital differences and platform gender segregation largely explain the gender pay gap on platforms in Australia. There was an association between parenthood and earnings, but this is moderated by human capital and platform type, suggesting that differences in earnings amongst parents are explained by these factors. The research finds that the gender gap across the platform economy increased by five percentage points, indicating that the gendered impact of the COVID-19 pandemic also affected the platform economy.