Compound Interest Calculator
Calculate your investment growth with compound interest over time
Your Investment
Year-by-Year Breakdown
| Year | Principal | Interest | Total |
|---|---|---|---|
| 0 | $10,000 | $0 | $10,000 |
| 1 | $16,000 | $1,330 | $17,330 |
| 2 | $22,000 | $3,427 | $25,427 |
| 3 | $28,000 | $6,373 | $34,373 |
| 4 | $34,000 | $10,255 | $44,255 |
| 5 | $40,000 | $15,172 | $55,172 |
| 6 | $46,000 | $21,232 | $67,232 |
| 7 | $52,000 | $28,554 | $80,554 |
| 8 | $58,000 | $37,272 | $95,272 |
| 9 | $64,000 | $47,531 | $111,531 |
| 10 | $70,000 | $59,493 | $129,493 |
| 11 | $76,000 | $73,335 | $149,335 |
| 12 | $82,000 | $89,255 | $171,255 |
| 13 | $88,000 | $107,471 | $195,471 |
| 14 | $94,000 | $128,222 | $222,222 |
| 15 | $100,000 | $151,774 | $251,774 |
| 16 | $106,000 | $178,421 | $284,421 |
| 17 | $112,000 | $208,487 | $320,487 |
| 18 | $118,000 | $242,329 | $360,329 |
| 19 | $124,000 | $280,342 | $404,342 |
| 20 | $130,000 | $322,965 | $452,965 |
| 21 | $136,000 | $370,679 | $506,679 |
| 22 | $142,000 | $424,018 | $566,018 |
| 23 | $148,000 | $483,570 | $631,570 |
| 24 | $154,000 | $549,987 | $703,987 |
| 25 | $160,000 | $623,986 | $783,986 |
| 26 | $166,000 | $706,363 | $872,363 |
| 27 | $172,000 | $797,993 | $969,993 |
| 28 | $178,000 | $899,847 | $1,077,847 |
| 29 | $184,000 | $1,012,994 | $1,196,994 |
| 30 | $190,000 | $1,138,618 | $1,328,618 |
Growth Over Time
Frequently Asked Questions
What is compound interest?
Compound interest is the interest calculated on the initial principal and also on the accumulated interest from previous periods. It's often called "interest on interest" and can significantly increase your investment over time.
How does compounding frequency affect my returns?
The more frequently interest is compounded, the more you'll earn. Monthly compounding will generate slightly higher returns than annual compounding, as interest is calculated and added to your principal more often.
What's a realistic annual return rate?
Historical stock market returns average around 10% annually. Conservative investments like bonds might return 4-6%, while aggressive stock portfolios could target 12-15%. Always consider your risk tolerance and investment timeline.
Should I prioritize initial investment or monthly contributions?
Both are important! Starting early with a larger initial investment gives you more time for compound growth. However, consistent monthly contributions can be just as powerful over time, especially if you're investing for 20+ years.
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Educational purposes only. Not financial advice.