A fully internationalised currency such as the US dollar, can be used in the invoicing of trade in goods and services, as well as dividend payments, foreign direct investments and more. Such an arrangement requires full convertibility of the currency on current as well as capital account transactions.
Is the Indian rupee convertible?
The rupee is partially convertible. It attained current account convertibility in the early- through mid-1990s. This means the rupee can be converted to any foreign currency at existing market rates, easing financial transactions for the export and import of goods and services, for any amount.
The rupee remains capital account non-convertible. This means, that while there are provisions at present for bringing in foreign capital or taking out domestic money, the central regulators impose a stringent system of checks and balances, including ceilings, approvals etc. on such transactions. Moreover, the regulators, including RBI, swing in from time to time to control the rupee’s exchange rates, instead of leaving it completely at the mercy of the market forces.