Question 1

What is the compound interest effect explained simply?

Accepted Answer

The compound interest effect is the interest on interest: instead of withdrawing it, it is added to the capital and earns interest itself. Over long periods, the capital grows strongly accelerated, especially with securities strategies with higher expected return.

Question 2

How does the Compando Compound Interest Calculator work?

Accepted Answer

The calculator uses the standardcompound interest formula with monthly reinvestment and constant return over the investment period. Inputs are initial capital, monthly amount, investment horizon in years and desired return. Inflation, fees and withdrawal taxes are not included in this simple calculation. For a more detailed calculation with these factors, the Assets Calculatoris suitable.

Question 3

Is compound interest calculated monthly or annually?

Accepted Answer

The Compando Compound Interest Calculator calculates monthly: the annual interest is divided by twelve and credited month by month, then earns interest itself. Over long periods, the result is therefore somewhat higher than with purely annual interest. The actual rhythm depends on the provider and product.

Question 4

How can I benefit from the compound interest effect?

Accepted Answer

Three levers are decisive: you invest your money instead of parking it in an account, where the interest is too low for a noticeable effect. You stay investedfor a long time, as the investment duration is one of the most important factors. And you reinvest your returns, for example with accumulating ETFs. In restricted pension provision like Pillar 3a , this reinvestment happens automatically.

Question 5

Which return should I assume for compound interest?

Accepted Answer

Account solutions achieve 0.05 to 0.5 % interest, mixed securities strategies 2 to 4 %, equity-heavy investments 4 to 6 % long-term. Which strategy fits which profile depends on the investment horizon and risk appetite. Calculate rather cautiously and compare several scenarios. In Pillar 3a, comparing the providers is added, as performance differs strongly.

Question 6

What role does inflation play in the compound interest effect?

Accepted Answer

Inflation reduces the purchasing power of the final capital. At 2 % inflation and 5 % return, the real return is around 3 %. The calculator shows nominal values. To offset inflation, an investment strategy with a higher equity share is suitable, paired with a long-term view beyond market turbulence .

Question 7

Does the compound interest effect also work with shares and ETFs?

Accepted Answer

Yes. Shares pay no interest, but the same mechanism works via dividends and price gains that remain in the portfolio. If you reinvest dividends automatically instead of receiving them, your capital grows through returns that themselves generate returns. With accumulating ETFs , this reinvestment is already part of the strategy, similarly with investment funds in Pillar 3a.

Question 8

Is the compound interest effect worthwhile with a short investment horizon?

Accepted Answer

The longer the investment horizon, the more strongly the compound interest effect works: with short terms it turns out noticeably smaller than over several decades. Anyone starting earliergives the effect more time. Even with a later start, Pillar 3a thanks to the annual tax savings.

Question 9

Does the compound interest effect also work with small contributions?

Accepted Answer

Yes, even CHF 100 to 200 monthly add up strongly over 30 years if the return is right. At 5 % return, CHF 100 monthly over 30 years gives around CHF 83'000 final capital, of which more than half from the compound interest effect. Which monthly contribution fits your income is determined by your pension goals.

Question 10

What is the difference between interest and compound interest?

Accepted Answer

With simple interest , only the contributions are remunerated and the interest is paid out. With compound interest , the interest is reinvested and earns interest together with the capital. Over long periods this creates a multiple growth effect: at 5 % return, the capital doubles roughly every 14 years, at 7 % return every roughly 10 years.

Question 11

How do compound interest and the tax advantage complement each other?

Accepted Answer

In restricted pension provision like Pillar 3a , two levers work together: your balance grows compound-interest-supported and the contributions reduce your taxable income. How high your specific tax saving turns out is shown by the Pillar 3a tax calculator.

Question 12

Does the compound interest effect remain when switching providers?

Accepted Answer

Yes. With a transfer, your balance including all credited interest is transferred and the compound interest effect continues without interruption. Before a provider switch , check the fees and investment strategies, as differences over the remaining term strongly affect the final capital.

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Compound Interest Calculator: Important questions and answers

What is the compound interest effect explained simply?

What is the compound interest effect explained simply?

How does the Compando Compound Interest Calculator work?

How does the Compando Compound Interest Calculator work?

Is compound interest calculated monthly or annually?

Is compound interest calculated monthly or annually?

How can I benefit from the compound interest effect?

How can I benefit from the compound interest effect?

Which return should I assume for compound interest?

Which return should I assume for compound interest?

What role does inflation play in the compound interest effect?

What role does inflation play in the compound interest effect?

Does the compound interest effect also work with shares and ETFs?

Does the compound interest effect also work with shares and ETFs?

Is the compound interest effect worthwhile with a short investment horizon?

Is the compound interest effect worthwhile with a short investment horizon?

Does the compound interest effect also work with small contributions?

Does the compound interest effect also work with small contributions?

What is the difference between interest and compound interest?

What is the difference between interest and compound interest?

How do compound interest and the tax advantage complement each other?

How do compound interest and the tax advantage complement each other?

Does the compound interest effect remain when switching providers?

Does the compound interest effect remain when switching providers?

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