Background In 2016 and 2018, the Peruvian Ministry of Economy and Finance (MoEF) significantly reformulated taxes on tobacco products, alcohol and sugar-sweetened beverages (SSBs). During these processes, different actors advanced arguments supporting or opposing the taxes. This study examines Peru's political and socioeconomic factors, the role of other actors and framing strategies, shaping health taxes introduction. Methods We conducted qualitative analysis by collecting information from three sources, such as: (1) media material (n=343 documents), (2) government documents (n=34) and (3) semistructured interviews (n=11). That data allowed us to identify and characterise the actors involved in implementing health taxes in Peru. We combined the data from these sources, synthesised our findings and conducted a stakeholder analysis. Results Key actors supporting taxes were the MoEF and civil society organisations, while trade associations and the alcohol, SSBs and tobacco industries opposed them using economic, trade-related arguments and criticised the policy process. The supporting group used arguments related to the economy and health to legitimate its narrative. The framing strategies employed by these stakeholders shaped and determined the outcome of the policy process. Conclusion Peruvian stakeholders against health taxes demonstrated a strong capacity to convey their messages to the media and high-level policy-makers. Despite these efforts, attempts to interfere with health taxes were unsuccessful in 2016 and 2018 and failed to overcome state institutions, particularly the MoEF. Strong institutions and individual decision-makers in Peru also contributed to the successful implementation of health taxes in Peru in 2016 and 2018.