The Sri Lanka Rupee (LKR) is the official currency of Sri Lanka, an island country located in South Asia. The Sri Lanka Central Bank, Central Bank of Sri Lanka, is the authority responsible for issuing and regulating the country's currency. The rupee is divided into 100 cents.The Sri Lanka Rupee has been in circulation since 1872 and has undergone several changes in its design and denomination over the years. Currently, the rupee is available in the form of notes and coins. The notes are available in denominations of Rs. 10, Rs. 20, Rs. 50, Rs. 100, Rs. 500, Rs. 1000, Rs. 5000, Rs. 10000 and coins in 1, 2, 5 and 10 Rupees.The value of the Sri Lanka Rupee is determined by market forces of supply and demand and is influenced by a variety of factors such as inflation, economic growth, and government policies. The exchange rate of the Sri Lanka Rupee fluctuates with respect to other major currencies like US dollar, Euro, and Indian Rupee.The Sri Lanka Rupee is widely accepted throughout the country and is used for a variety of transactions including retail purchases, bill payments, and bank transfers. It is also widely used in remittances and foreign trade.It is important to note that the currency is only legal tender within the geographical boundaries of Sri Lanka and its usage outside of the country is limited.