The world is moving towards sustainable development and solutions we bring must contribute to economic prosperity in way which does not break social equity. Islamic social finance can help rural development in developing economies, while in the domain of agri finance, Islamic FinTech may pave the path for influencing agricultural financing efforts in developing countries. Here, we discuss how Mugharasah can take advantage of Islamic social finance especially FinTech for local and rural sectors of the agricultural economy in Bangladesh towards sustainable development. Mugharasah, a mutual risk profit-sharing based Islamic finance partnership, could be one of the viable substitute for financing sustainable agricultural growth in terms of either access to credit or technology facility. This is analyzed that, speaks of integrating Mugharasah into Fintech solutions to form a financial ecosystem; for inclusive and sustainable development of rural farmer. It also provides an insight into the different challenges encountered by rural farmers, scarcity of capital, financial exclusion, exposure to natural/rain risk etc. The present paper discusses shariah-compliant fintech models by which digital platforms may provide efficient, transparent and scalable finance that is shariah compliant as well including environmentally friendly financing. The study also analyses the ways in which Mugharasah led FinTech support can improve agricultural productivity, natural resource management and climate risks adapting with access to climate-smart technologies, digital agriculture services, capacity building. an you can look at some Mobile Banking, Blockchain and the eventual Smart Contract that may allow Agro-Farmers sign up a profit sharing agreement with guaranteed return. They will gradually wean themselves off the traditional money-lenders who have made them poorer over years. The paper concludes with the types and levels of support policy makers, financial institutions and FinTech entrepreneurs may consider in bringing FinTech-supported Mugharasah to rural Bangladesh. The design of regulatory environment may be adopted the Islamic finance in rural agricultural development, developments of tailor made digital platform for reach and impact on rural farmers, partnership among Islamic financial institutions, fintech firms and agriculture entities, etc. This research strives to contribute toward the fulfillment of UN SDGs through aligned technology and Islamic finance principles, specifically in alleviating poverty and promoting rural-inclusive development.