Formula of cip is (l+it*)1~+ &(l+it)it can beF,-S, i,1t*changed into ~ + ,, *t for time, i~ for domestic nominal interest rate, i~7 forforeign country nominal interest rate, F~ for forward exchangerate , St for spot exchange rate.

• 利率平价（CIP）的表达式如下：变形后得：t 代表时间，it代表国内名义利率，it* 代表国外名义利率，Ft 为远期汇率，（在时间t时所报的t+1时交割的外汇的价格），St 为即期汇率。