Welcome to the Serrari Simple Interest Calculator

Easily find out how much interest your money can earn over time. Our Simple Interest Calculator helps you understand how your savings, investments, or loans grow using an easy formula — no complex math required.

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How It Works

The calculator uses the simple interest formula:
Simple Interest = (Principal × Rate × Time) ÷ 100

Where:

• Principal is the amount of money you start with.
• Rate is the annual interest rate in percent.
• Time is how long the money is invested or borrowed, in years.

Simple interest means the interest is only calculated on the original amount — it doesn’t compound or build on itself.

Example

If you invest KES 10,000 at an annual interest rate of 5% for 2 years,
Simple Interest = (10,000 × 5 × 2) ÷ 100 = KES 1,000

Your total amount after 2 years will be:
10,000 + 1,000 = KES 11,000

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Parameters Explained

• Principal Amount: The amount of money you invest or borrow.
• Annual Interest Rate: The percentage charged or earned each year.
• Time Period: How long the money is invested or borrowed, usually in years.

Try It Out

Enter your values and click Calculate to see your results instantly. Whether you’re checking loan costs, planning savings, or exploring investment returns, the Serrari Simple Interest Calculator makes it quick and easy to understand your earnings or repayments.

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