In the global South, low-income populations are faced with frequent health shocks. Formal mechanisms to protect them against these shocks are absent or limited. Thus, what are the mechanisms used by low-income rural populations to finance healthcare? This paper draws on a qualitative study to examine the healthcare financing mechanisms of low-income rural populations in Cameroon. The findings suggest that low-income populations use 13 mechanisms to finance healthcare. Depending on several factors, people may use more than one of these mechanisms. In addition, social factors shape people’s patterns of usage of these mechanisms. Patterns of usage of these mechanisms are embedded in the principle of reciprocity. The notion of reciprocity does seem to discourage people from enrolling in the limited voluntary health insurance programmes which exist in various communities. Newly insured people were more likely to drop out if they did not receive a payout.