This article examines the determinants of medical cost of treating malaria and how it impacted on the household’s healthcare expenditure in Kaduna Metropolis, Nigeria. Using data collected from a sample of 225 households, the article argues that household’s healthcare expenditure is attributed to malaria treatment seeking behaviour in the study area. Employing logit regression models, the study finds evidence to suggest household income, distance to healthcare provider, rate of malaria episode, and number of travel to health provider have positive and significance influence on household’s healthcare expenditure in Kaduna Metropolis. The estimation results also suggest waiting time for health care services, household’s age, and household losses due to care giving have negative and significance influence on the household’s healthcare expenditure. The result also revealed that majority of the households (48.89%) experienced malaria episodes and involved in treatment at least twice in a year thereby recording an increasing healthcare expenditure thereof. Finally, the article j suggests the need to improve malaria healthcare service delivery facilities and to minimize waiting time for consultation in the study area.

 Key Word: Household, Healthcare, Expenditure, Kaduna Metropolis, Nigeria.