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  3. Compound Interest Calculator
Compound Interest Calculator

Compound Interest Calculator

Model compound growth over time: starting capital, recurring deposits and expected return. See how your wealth compounds.

Compound Interest Calculator
Simulate compound interest: Starting capital, savings rate, and return over time. See how your assets grow year by year.
10,000 €
200 €
20 Years
6.00 %
Result Overview
Based on your inputs

Final capital after 20 years

101,681 €

After tax

Total contributions

58,000 €

Interest & Compound Interest

43,681 €

After tax

Capital Distribution

Contributions: 57%Interest: 43%

Total Return

75.31 %

After tax

Real Return

17.98 %

After inflation

Inflation Effect

68,428 €

Purchasing power of final capital in today's Euros

🧮 Compound Interest Calculator – Your Capital Growth at a Glance

With the Compound Interest Calculator from MoneyNarrative, you can calculate how your wealth grows over the years – based on your starting capital, regular deposits, and an expected return. The calculator clearly shows you how interest, compound interest, and inflation affect your final capital.

You find out at a glance:

  • How much your capital is worth after X years
  • How strongly compound interest accelerates wealth accumulation
  • How high your actual profit is after taxes and inflation

This is how you recognize how powerful the compound interest effect truly is – and why early investing is so crucial for long-term wealth accumulation.


💡 Example Calculation

Let's assume you start with €5,000 starting capital, save €200 monthly, and achieve an average return of 6% per year.

After 20 years, the result is:

MetricAmount / Value
Final Capitalapprox. €89,811
Total Deposits€53,000
Interest & Compound Interest€36,811
Total Return69.45%
Real Return (after inflation)14.04%
Purchasing Power Today€60,440

The compound interest effect ensures that your capital grows faster and faster – because you receive interest not only on your deposits but also on already earned interest.


📘 How the Compound Interest Calculator Works

  1. Enter Starting Capital: Amount with which you begin
  2. Monthly Savings Rate: Regular contribution that you want to invest
  3. Return: Average interest rate per year
  4. Investment Duration: Period of your investment
  5. Tax Rate & Inflation: Optional, to see realistic net results

The calculator then shows you your final capital, the earnings components, the inflationary influences, and graphically the capital development over the years.


🧭 Conclusion

The Compound Interest Calculator is an indispensable tool for understanding how time and patience are your biggest leverage in wealth accumulation. It helps you to develop realistic expectations and make well-founded investment decisions.


💬 Tip

Also try the Savings Plan Calculator – ideal if you want to invest regularly and compare different scenarios.

Frequently Asked Questions

Why use our financial calculators?

Easy to use

Our calculators are designed to be intuitive and require no prior knowledge of financial matters.

Transparent calculation methods

All assumptions and calculation methods are transparently presented and explained.

Free and non-binding

Use all calculators for free and without registration for your financial planning.