Abstract Disadvantaged populations in LMICs suffering from chronic conditions are often forced to make care choices that increase the risk of receiving substandard care and facing catastrophic bills. These negative impacts widen health disparities across social, economic and urban-rural lines. This study aimed to understand the economic consequences of the choices made by those living with NCD in disadvantaged communities in Malaysia and the Philippines. Using hypertension as a tracer condition, we analysed longitudinal data from surveys of 1200 hypertensive adults from low-income communities in both countries to estimate the prevalence and drivers of catastrophic health expenditure and the coping strategies employed. Interviews and digital diary data from a sub-sample of 80 participants was analysed thematically to elicit how such choices lead to sub-optimal management of their condition. More Filipino households with at least one hypertensive adult experienced catastrophic health spending (40% threshold) than in Malaysia (14.3% vs. 0.4%). Although the average cost of clinic visits in the Philippines was much higher than what was observed in the public sector-dominated system in Malaysia, consultation fees were main drivers of costs in Malaysia, while medication costs predominated in the Philippines (accounting for 38.6% and 70.5% of typical household health expenditure respectively). In both countries, nearly all diagnosed participants were taking antihypertensive medications, however, levels of adherence varied. Participants cited the unavailability, cost and adverse effects of antihypertensives as reasons for poor adherence, delaying treatment and substituting prescriptions. Understanding the barriers faced by disadvantaged populations in LMICs and the ways that they overcome them as they seek care for a chronic disorder may challenge the assumptions of decision makers, and is crucial for designing responsive and equitable health systems that leave none behind.