Euro investment simulator

Compound interest calculator

Forecast how an initial investment and recurring monthly contributions can grow with compound interest.

Effective annual rate: 5.12%

Investment inputs

All amounts are in euros.

Final amount

€129,885

Total contributions

€70,000

Interest earned

€59,885

Growth over time

Balance compared with total contributions.

Annual values

YearTotal contributedInterest earnedBalance
1€13,000.00€581.33€13,581.33
2€16,000.00€1,345.89€17,345.89
3€19,000.00€2,303.06€21,303.06
4€22,000.00€3,462.67€25,462.67
5€25,000.00€4,835.11€29,835.11
6€28,000.00€6,431.24€34,431.24
7€31,000.00€8,262.52€39,262.52
8€34,000.00€10,340.98€44,340.98
9€37,000.00€12,679.27€49,679.27
10€40,000.00€15,290.66€55,290.66
11€43,000.00€18,189.15€61,189.15
12€46,000.00€21,389.42€67,389.42
13€49,000.00€24,906.91€73,906.91
14€52,000.00€28,757.84€80,757.84
15€55,000.00€32,959.28€87,959.28
16€58,000.00€37,529.15€95,529.15
17€61,000.00€42,486.32€103,486.32
18€64,000.00€47,850.59€111,850.59
19€67,000.00€53,642.79€120,642.79
20€70,000.00€59,884.82€129,884.82

Glossary & Formulas

Key Terms

Initial investment
The starting balance of your account or the initial capital applied from the beginning of the first period.
Monthly contribution
The periodic amount of money (deposit) added to the principal at the end of each period.
Annual interest rate
The nominal estimated annual return of your investment before compounding effects.
Interest compounding frequency
How often the earned interest is calculated and added back to your principal balance (e.g., monthly, quarterly, annually).
Effective annual rate (EAR)
The actual, true annual return on your investment when the compounding frequency is taken into account.

Formula Used

The standard formula used to calculate the future value of an investment with regular contributions is:

M = C(1 + i)ⁿ + R [ ( (1 + i)ⁿ - 1 ) / i ]
  • M: Final amount (Future Value)
  • C: Initial capital
  • R: Periodic contribution
  • i: Interest rate per period
  • n: Total number of periods