💰 Monthly Deposit Compound Calculator

What is Monthly Compound?

Monthly compound investing means saving/investing a fixed amount each month while accumulating compound returns. The compound effect grows over time, favoring long-term investment.

📐 Monthly Compound Formula

FV = P × ((1 + r)^n - 1) / r
  • • FV = Future Value
  • • P = Monthly Payment
  • • r = Monthly rate (annual rate ÷ 12)
  • • n = Total months

复利计算器

0%10%20%
1y25y50y
Used for the "this year vs last year" simulation.
总投资额
¥780,000.00
总利息收入
+¥1,025,104.00
最终金额
¥1,805,104.00

增长图表

You vs Average

Benchmark: U.S. long-term average return assumed at 7%

Final gap: +¥0.00

This Year vs Last Year

Compares one-year outcomes using current and last-year return assumptions.

End-of-year difference: +¥808.00
💰

Compound Interest Result

¥1,805,104.00

Estimated interest: ¥1,025,104.00

Expected value after 20 years (7% annual return)

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什么是复利?

复利是对本金和以前期间积累的利息一起计算的利息。与仅对本金计算的单利不同,复利使您的资金随时间增长更快。

复利计算公式

A = P(1 + r/n)nt

A = P(1 + r/n)^(nt),其中A是最终金额,P是本金,r是年利率,n是每年复利次数,t是年数。

72法则

72法则是估算投资翻倍时间的简单方法。用72除以年回报率即可得到大约的年数。例如,在6%的年回报率下,您的投资将在约72÷6=12年内翻倍。

At 7% return, your investment doubles in about 10.3 years.

How to Read the Comparison Features

  • "You vs Average": See whether your assumptions outperform or underperform a U.S. long-term baseline.
  • "This Year vs Last Year": Quantify how a rate change shifts your one-year ending value under the same contribution plan.
  • Rate and term sliders update charts in real time so you can test scenarios quickly.

复利投资建议

  • 尽早开始投资以最大化复利增长
  • 定期投入,即使是小额也会积少成多
  • 将收益再投资以加速增长
  • 长期投资获得最佳结果

📝 How to Use

  1. Enter monthly deposit amount
  2. Set investment period (e.g., 10, 20, 30 years)
  3. Enter expected return rate
  4. Select compound frequency (monthly recommended)
  5. Click calculate to see results

💡 Monthly Investment Examples

MonthlyAfter 10yAfter 20yAfter 30y
300K4,970K1.5600M3.5300M
500K8,280K2.6000M5.8800M
100M1.6600M5.2000M11.7600M

* Assuming 7% annual return

🎯 Monthly Investment Tips

  • Set auto-transfer day after payday
  • Increase deposit when salary increases
  • Use tax-advantaged accounts
  • Maximize compound effect with long-term

📚 各地区计算规则说明

计算逻辑

采用公开的金融、贷款、比率与单位换算标准公式。

参考范围

参考公开标准与各地区常见实务规则。

前提条件

税费、费率、上限会因地区和机构而不同。

结果解读

结果可作为基准情景。正式决策前请与当地机构报价和税务规则对比。

地区默认值

货币: CNY

单位: metric

税务模型: US payroll estimate

法规提示

本工具基于地区预设进行估算。实际合同条款与法定上限可能因机构和当地法规而不同。

建议操作

  • 正式申请前请至少比较 2~3 家本地机构方案。
  • 再次核对费用、税务处理和提前还款条款。
  • 用利率 +1~2% 与收入下降场景再测一次。

做真实决策前,请先确认当地机构的最新条款。

查看政策说明