终值 :一般公式
• FV = PV(1 + r)t
▪ FV = 终值 ▪ PV = 现值 ▪ r = 期利率, 用小数表示 ▪ t = 期数
• 复利终值系数 = (1 + r)t
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现值 – 重要关系一
• 对于给定的利率,时间越长,现值越低
▪ 5年后500美元的现值是多少?十年?折现率是10% ▪ 5年: N = 5; I/Y = 10; FV = 500
CPT PV = -310.46 ▪ 10年: N = 10; I/Y = 10; FV = 500
CPT PV = -192.77
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现值 –例 1
• 假设你一年后需要1万美元来支付一辆新车的首付款。如 果你每年能赚7%,你现在需要投资多少?
• PV = 10,000 / (1.07)1 = 9,345.79 • 计算器
▪ 1N ▪ 7 I/Y ▪ 10,000 FV ▪ CPT PV = -9,345.79
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