Background and Aims: The current Covid-19 situation offers a natural experiment to explore the effect of a chronic stressor on compulsive buying tendencies over an extended period of time. Design: Survey method of sampling every three days a new cohort during the first six months of the Covid-19 pandemic (March-October 2020) in the United States. Participants: Total (clean) sample of N = 1430 (39.3% female, mean age = 36.4 years). Measurements: Online and offline compulsive buying separately, distress, SES, income and age were assessed. Findings: Both online and offline compulsive buying increased during the data collection period (𝜏 = 0.24, 𝜏 = 0.22, respectively, both p < 0.001). High-SES individuals reported the highest tendency for compulsive buying throughout the entire time frame, although the increase in compulsive buying tendencies over time was the highest among the socioeconomically less privileged. Online compulsive buying increased as a result of the CARES Act (first stimulus package) by an effect size of d = 0.33. When entered into a regression model, SES had the strongest effect on compulsive buying after accounting for the effect of distress, income and age (online: ßPSS = 1.3***, ßSES = 5.13***, ßincome = 2.6***, ßage = -0.20*, F(4, 709) = 53.01, R2 = 0.23, RSE = 29.5; offline: ßPSS = 1.45***, ßSES = 4.86***, ßincome = 2.16***, ßage = -0.08 p > 0.4; F(4, 695) = 49.54, R2 = 0.22, RSE = 30.41). The high-income group reported the strongest correlation between distress and compulsive buying (r = 0.67, p < 0.001, 95% CI: 0.57–0.76). Conclusions: Compulsive buying tendency gradually increased during the first six months of the Covid-19 pandemic especially as a result of the CARES Act.