Reaching a better understanding of current regulatory approaches’ enforcement will be as a baseline for enhancing a better future policy choice in deterring and controlling on the devastating effect of haze pollution. Using in-depth interview with the prominent actor who has direct and indirect involvement on the law enforcement process as respondent (i.e., Investigator, Prosecutor, Academia as Expert Witness in the Court, NGO) the paper will investigate how does insufficient power and capacity of law enforcement would be hampering policy deterrence in tackling haze pollution. The paper is selecting Riau and South Sumatra Province as a case study due to as Provinces at Sumatra Island with the profoundly highest influenced by the hotspot that created severe haze pollution. The paper adopts a novel approach to analysis obstacle in law enforcement of land/forest fire based on deterrence from actor perspective in Riau and South Sumatra Province. The paper shows that inadequacy probability of detection for environmental offense, especially in South Sumatra, making economic agent not correctly receiving a signal not to engage in unsustainable and illegal activities. More specifically, the paper finds that the absence of technical arrangement for the environmental recovery cost and direct financial mechanism on how fines would be utilized has been hampering law enforcement deterrence. Moreover, limited budget and coordination as part of government capacity are providing a low probability of inspection and creating relatively high the benefit of noncompliance so inducing the persistence of noncompliance. The setting up policy regime inclusive of the fiscal provision in mixed environmental management cannot be overlooked as a reference point for the effective future solution change. The potential taxes ability in regulating the pollution and generate revenue for the government would be improving capacity that leads to enhancement of enforcement deterrence on haze pollution in Indonesia.