Blending funds from private investorswith concessional funds from donors and philanthropicsourceshas a strong potential to scale up investment inlower-income countries and thereby acceleratedevelopment.The use of blended concessional finance is already prevalentin lower-income countriesrepresenting over 70 percent ofIFC’s commitments. Recent strategies from developmentfinanceinstitutions including the World Bank Group indicatethat the relative share of lower-income countries in theglobal mix of blended concessional finance will increasefurther. Scaling up engagements in lower-income countriesrequires solutions tailored to local contexts, as well asthe deployment of the whole spectrum of development financetools, including advisory work, regulatory dialogue andreform, and a mix of blending instruments encompassing bothpricing and risk mitigation features.