Micro, Small and Medium Enterprises (MSMEs) are one of the strongest drivers of economic development, innovation and employment. Access to finance is frequently identified as a critical barrier to growth for MSMEs. Creating opportunities for MSMEs in emerging markets is a key way to advance economic development and reduce poverty. The private and public sector can better address this matter if they have better insights about the magnitude and nature of the finance gap. Hence, sizing MSME finance gap is crucial for the governors, financiers and other private sector players to target high potential growth areas and hence more efficiently support MSME sector development. Responding to such demand, this study has used an innovative methodology to estimate that: 131 million or 41% of formal MSMEs in developing countries have unmet financing needs MSME finance gap in developing countries is estimated to be approximately $5 trillion - 1.3 times the current level of MSME lending women-owned businesses comprise 23% of MSMEs and account for 32% of the MSME finance gap.