The real effective exchange rate (REER) is a measure of the relative strength of a country’s currency in relation to an index or basket of other major currencies. The REER is used to judge whether the country’s currency is undervalued or overvalued or, ideally, fairly valued… Nominal Effective Exchange Rate (NEER)…It is an index of the weighted average of bilateral exchange rates of home currency with respect to a basket of currencies of trading partners. An increase in NEER indicates an appreciation of the local currency against the weighted basket of currencies of its trading partners.