The document discusses capital account convertibility (CAC), which refers to the freedom to convert local financial assets into foreign assets and vice versa at market rates. CAC has both advantages like unrestricted capital mobility and improved access to global markets, as well as disadvantages like increased volatility and easier access to illegal funds. For a country to successfully implement CAC, it needs strong macroeconomic fundamentals like economic stability, adequate foreign reserves, and good investment policies to avoid risks like capital flight negatively impacting the balance of payments.