PPmt(rate, per, nper, pv[, fv[, type]]) rate 必要。Double 指定每一期的利率。例如,如果有一笔贷款年百分比率 (APR) 为百分之十且按月付款的汽车贷款,则每一期的利率为 0.1/12 或 0.0083。 per 必要。Integer 指定在 nper 间范围 1 中的付款周期。
PPmt(rate, per, nper, pv[, fv[, type]])
rate 必要。Double 指定每一期的利率。例如,如果有一笔贷款年百分比率 (APR) 为百分之十且按月付款的汽车贷款,则每一期的利率为 0.1/12 或 0.0083。
per 必要。Integer 指定在 nper 间范围 1 中的付款周期。
nper 必要。Integer 指定一笔年金的付款总期数。例如,如果对一笔为期四年的汽车贷款选择按月付款,则贷款共有 4 * 12(或 48)个付款期。
pv 必要。Double 指定未来一系列付款或收款的现值。例如,当贷款买一辆汽车时,向贷方所借贷的金额为将来每月偿付给贷方款项的现值。
fv 可选。Variant 指定在付清贷款后所希望的未来值或现金结存值。例如,贷款的未来值在贷款付清后为 0 美元。但是,如果想要在 18 年间存下 50,000 美元作为子女教育基金,那么 50,000 美元为未来值。如果省略的话,缺省值为 0。
type 可选。Variant 指定贷款到期时间。如果贷款是在贷款周期结束时到期,则请使用 0。如果贷款是在周期开始时到期,则请使用 1。如果省略的话,缺省值为 0。
说明:金是在一段时间内一系列固定现金支付。年金可以是贷款(如房屋抵押贷款),也可以是一笔投资(如按月储蓄计划)。 在支付期间必须用相同的单位计算 rate 和 nper 参数。
例如,如果 rate 用月份计算,则 nper 也必须用月份计算。 对所有参数,用负数表示现金支出(如储蓄存款),而用正数表示现金收入(如红利支票)。

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