Interest Calculator
Interest Calculator
Calculate simple or compound interest with regular contributions and detailed accumulation schedules.
Deposits are added before interest is calculated for the period.
Simple Interest: Interest calculated only on the principal amounts (initial and added). It does not earn interest on interest.
Compound Interest: Interest earned is added back to the principal, so the next period earns interest on that interest as well.
Total Interest
$8,547.94
End Balance
$48,547.94
| Year | Year Interest | Total Interest | Balance |
|---|---|---|---|
| 1 | $815.4 | $815.4 | $16,815.4 |
| 2 | $1,235.76 | $2,051.16 | $24,051.16 |
| 3 | $1,682.04 | $3,733.2 | $31,733.2 |
| 4 | $2,155.85 | $5,889.05 | $39,889.05 |
| 5 | $2,658.89 | $8,547.94 | $48,547.94 |
Understanding Interest
Interest is essentially the cost of borrowing money or the reward for saving it. At My Apex Calc, we provide tools to help you visualize exactly how these percentages translate into real dollars over time. Whether you are looking at a simple car loan or a long-term retirement fund, knowing the difference between simple and compound interest is crucial for financial literacy.
Most modern financial products use compound interest because it accounts for the exponential growth of money. As your interest earns interest, your wealth grows at an increasing rate—a phenomenon Einstein famously called the "eighth wonder of the world."
Key Takeaways
Timing Matters
Contributing at the Beginning of a month allows that money to earn interest for that full month, significantly boosting long-term gains.
Frequency is Key
The more frequently interest is compounded (e.g., daily vs. annually), the higher the total end balance will be.