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JoVE Business
Macroeconomics
实际利率与名义利率
实际利率与名义利率
Business
Macroeconomics
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Business Macroeconomics
The Real and Nominal Interest Rate

6.12: 实际利率与名义利率

165 Views
01:30 min
November 14, 2025
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Overview

当你将钱存入储蓄账户或贷款时,通常会看到一个利率。这个数值被称为名义利率。它显示了你随着时间推移能够赚取或需支付的额外利息。然而,这并不能全面反映实际情况。如果在你的资金存放期间物价上涨,你可能并未获得预期的收益。这时,实际利率变得尤为重要。

实际利率考虑了通货膨胀的因素。通货膨胀意味着物品和服务的价格上涨,从而导致你的钱的购买力下降。为了计算你真正获得的收益,需要从名义利率中减去通货膨胀率。

假设某人将 6,000 美元存入一个年利率为 4% 的储蓄账户。一年后,账户余额增加至 6,240 美元。但如果当年的通货膨胀率为 3%,那么日常物品的价格也随之上涨。那额外的 240 美元的购买力减弱了。实际上,这个人的钱的实际增值幅度仅为约 1%。

现在假设利率保持不变,但通货膨胀率上升到 5%。尽管银行支付了利息,货币的实际价值却在减少。账户余额虽然增加了,但它的购买力却降低了。

这一观点有助于解释为什么仅仅看账户余额是不够的。实际利率提供了更为清晰的视角,帮助我们更好地了解资金的实际情况。如果你希望你的储蓄在未来带来实际收益,理解通货膨胀的作用至关重要。即便通货膨胀率发生微小变化,也会对你随时间变化的收益或损失产生重要影响。

Transcript

一位小企业主约翰将收入中的一万美元转入储蓄账户。银行提供3%的年利率,所以一年后他的余额会增长到一万三百美元。

乍一看,约翰似乎赚了三百美元。这个金额来自名义利率3%——即扣除通胀前的回报。

但同年,通胀率达到了2%。原本一百美元的商品现在变成了一百零二美元,显示每花一美元就能买得更少。

经济学家使用一个简单的公式来计算实际利率,这是更准确的实际收益指标。实际利率等于名义利率减去通胀率,通胀率衡量实际收益。约翰的情况是1%。

因此,虽然他的账户余额增加了3%,但他实际购买力的增长只有1%,反映了他的资金实际上能买到的东西。

现在想象一下,如果通胀率上升到4%。尽管余额增加,约翰仍将面临负1%的实际利率,意味着他的钱在实际价值上会贬值。

理解实际利率是衡量实际金融增长的关键。

Explore More Videos

名义利率 实际利率 通胀 储蓄账户 购买力 银行利息 账户余额 货币价值 价格上涨 金融增长

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