The Indonesian Rupiah is the official currency of Indonesia. It is used in all financial markets, allowing investors to buy and sell assets in the country. It is also used to buy and sell goods and services, and in international trading. In addition, it is used as a benchmark for other currencies when calculating exchange rates. Investors can use it to diversify their portfolios and to take advantage of different market opportunities. The Rupiah is also used to measure the performance of the Indonesian stock market, making it an important indicator for investors.