Purpose Does Islamic finance affect economic growth? The empirical literature in this area seems to be in early stages and the results are often mixed and inconclusive. This paper aims to examine the causality between financial development in general, Islamic finance in particular and real economic growth in the United Arab Emirates (UAE). Design/methodology/approach Using time series data from 1990 to 2012, a bivariate vector autoregressive model was used to document the financial development-Islamic finance-growth causal nexus and to forecast growth under various scenarios. A composite indicator, as a proxy for financial development, was determined using a non-parametric approach: data envelopment analysis. Findings The direction of causality runs from financial development to economic growth and the reverse causality does not drive this relationship; however, the real gross domestic product (GDP) causes Islamic financial development with no reverse effect. Furthermore, the forecasting results indicate that the past relation has been a proxy for the future where financial development leads to better progress in real economic activity. This will likely continue to stimulate the development of Islamic finance. Research limitations/implications Because the financial markets in the UAE were established in 2000, this study ignored Islamic bonds and equity product. The value of the Sukuk listed on Dubai’s exchanges is around US$36.75bn (Thomson Reuters, 2015), reinforcing Dubai’s position as an international center for Sukuk activity. Among the most important tools of the Islamic financial sector, Sukuk deserves a closer empirical study. This can set the agenda for future work. Practical implications The financial sector appears to be one of the main drivers of real economic activity. However, more effort in the area of Islamic finance is needed to promote Shari’ah-compliant economic activities and thus better contribute toward making Dubai-UAE the capital of the Islamic economy. Originality/value A new indicator was used to evaluate the financial strength of the UAE and analyze its effect on economic development. In addition, as one of UAE’ emirates, Dubai declared its vision in 2013 to become the “capital of the Islamic economy”, this study analyzed the finance, Islamic finance and growth relations over the period 2013-2022.