International expenditures for scientific research are important for small island developing nations, especially for those local communities that directly support research activities. We used the Abaco Islands, The Bahamas, as a case study to quantify the direct monetary inputs to a local economy via internationally funded scientific research. We found that over two years the external monetary influx was $995,310, via 24 research teams, spent across diverse business sectors on Abaco Island. A direct survey approach ensured this was a conservative estimate, leaving out numerous indirect economic impacts, thereby suggesting the actual monetary infusion was significantly higher. The highest expenditures were for services (e.g., local salaries and boat guides), lodging, food/drink, and major equipment (e.g., vehicles). While we do not have data from research teams working on other islands, significant research expenditures are made elsewhere in The Bahamas, including through government-sponsored efforts, environmentally-focused non-governmental organizations, and research centers. In addition to the research-based contributions that give rise to conservation and management decision-making, scientific activity brings benefits through the injection of money into local island economies. This relationship warrants study at larger regional scales, including across The Bahamas archipelago.