Compound Interest Formula:
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The compound interest formula calculates the future value of an investment or savings account where interest is compounded at regular intervals. It shows how investments grow over time through the power of compounding.
The calculator uses the compound interest formula:
Where:
Explanation: The formula calculates how much an investment will grow when interest is added to the principal at regular intervals, allowing the interest itself to earn interest.
Details: Understanding compound interest is crucial for financial planning, investment decisions, and retirement savings. It demonstrates how small, regular investments can grow significantly over time.
Tips: Enter the principal amount in GBP, annual interest rate as a decimal (e.g., 0.05 for 5%), compounding frequency (how many times per year interest is added), and time period in years. All values must be positive numbers.
Q1: What's the difference between simple and compound interest?
A: Simple interest is calculated only on the principal amount, while compound interest is calculated on both the principal and accumulated interest.
Q2: How does compounding frequency affect the final amount?
A: More frequent compounding results in higher returns because interest is added to the principal more often, allowing it to earn additional interest.
Q3: What are typical compounding frequencies?
A: Common frequencies include annually (1), semi-annually (2), quarterly (4), monthly (12), and daily (365).
Q4: How do I convert percentage rate to decimal?
A: Divide the percentage by 100 (e.g., 5% becomes 0.05, 3.25% becomes 0.0325).
Q5: Is this calculator specific to Aviva products?
A: While designed for Aviva investments and savings accounts, the compound interest formula applies universally to any investment with compounding interest.