Pengaruh Inflasi, Jub, SBI, Serta Cadangan Devisa Terhadap Nilai Tukar Rupiah Tahun 2017-2020

Indonesia's economy refers to an open economy. In conducting International trade, countries must compare their currencies with currencies belonging to other countries. Where, the United States currency, namely the dollar, is still the standard of world exchange rates and is used in International transactions. The effect of fluctuations in the exchange rate of the rupiah with the dollar is the occurrence of depreciation or appreciation which will affect Indonesia's economic activities. The purpose of this study is to determine the effect of inflation, the money supply (M2), the SBI interest rate, and foreign exchange reserves on the rupiah exchange rate in the short and long term. The variables that are thought to be able to influence changes in the rupiah exchange rate are the inflation rate, the money supply (M2), the SBI interest rate, and foreign exchange reserves. This research was conducted during January 2017 to December 2020, using the Error Correction Model (ECM). The result is a long-term and short-term relationship. In the short term, foreign exchange reserves and the money supply (M2) significantly affect the exchange rate. Meanwhile, in the long term, the SBI interest rate, money supply (M2), and foreign exchange reserves significantly affect the exchange rate