Research interest:
adoption of e-banking and payment instruments, consumer payment behavior, payment economics, demand for money, FinTech development
About me:
My research interests focus on the broadly defined economics of payments. In my work, I analyze consumer payment patterns and behavior in a dynamically changing environment. I also examine the adoption of electronic banking and modern payment instruments by consumers and the market. I present the results of my research at key academic events, participating in conferences such as the Economics of Payments series and the International Cash Conference. I combine academic activities with business practice, drawing on my fifteen years of professional experience in the payments industry. I am also involved in the dissemination of economic and financial knowledge, as part of which I have prepared studies for the Obserwator Finansowy portal and published in the SUERF Policy Briefs series.
Links:
Publications:
Published articles
Van Hove, L., Kotkowski, R., & Polasik, M. (2026). A scaling law for two-sided networks? Empirical evidence for a mobile payment scheme. Telecommunications Policy, 50(1), 103103. https://doi.org/10.1016/j.telpol.2025.103103
Polasik, M., Kotkowski, R., Manikowski, A., Van Hove, L., Maciejewski, K., Huterska, A., & Jakubowska, M. (2025). Carrot and stick: Impact of regulations, subsidies, and obligations on the development of cashless payments in Poland. Journal of Central Banking Theory and Practice, 14(3), 105–138. https://doi.org/10.2478/jcbtp-2025-0025
Van Hove, L., Polasik, M., & Kotkowski, R. (2024). Revenues of network platforms: Can they be expected to follow a growth ‘law’? Technology in Society, 78, 102645. https://doi.org/10.1016/j.techsoc.2024.102645
Wisniewski, T. P., Polasik, M., Kotkowski, R., & Moro, A. (2024). Switching from cash to cashless payments during the COVID-19 pandemic and beyond. International Journal of Central Banking, 20(3), 303–371. https://www.ijcb.org/journal/ijcb24q3a7.pdf
Kotkowski, R. (2023). National culture and the demand for physical money during the first year of the COVID-19 pandemic. Finance Research Letters, 51, 103483. https://doi.org/10.1016/j.frl.2022.103483
Kotkowski, R., & Polasik, M. (2021). COVID-19 pandemic increases the divide between cash and cashless payment users in Europe. Economics Letters, 209, 110139. https://doi.org/10.1016/j.econlet.2021.110139
Polasik, M., Piotrowska, A. I., Wisniewski, T. P., Kotkowski, R., & Lightfoot, G. (2015). Price fluctuations and the use of Bitcoin: An empirical inquiry. International Journal of Electronic Commerce, 20(1), 9–49. https://doi.org/10.1080/10864415.2016.1061413