📈 Compound Interest
$5,000 at 7% for 15 Years
Investing $5,000 at 7% annual compound interest for 15 years grows to $13,795. That's $8,795 earned in interest on top of your original $5,000.
Compound Interest Calculator
Australia 2026
$
%
$
Total value after 15 years
$13,795
Amount invested$5,000
Interest earned$8,795
Interest multiplier2.76×
Year-by-year growth
| Year | Balance | Interest |
|---|---|---|
| Yr 1 | $5,350 | +$350 |
| Yr 2 | $5,725 | +$375 |
| Yr 3 | $6,125 | +$401 |
| Yr 4 | $6,554 | +$429 |
| Yr 5 | $7,013 | +$459 |
| Yr 6 | $7,504 | +$491 |
| Yr 7 | $8,029 | +$525 |
| Yr 8 | $8,591 | +$562 |
| Yr 9 | $9,192 | +$601 |
| Yr 10 | $9,836 | +$643 |
| Yr 11 | $10,524 | +$689 |
| Yr 12 | $11,261 | +$737 |
| Yr 13 | $12,049 | +$788 |
| Yr 14 | $12,893 | +$843 |
| Yr 15 | $13,795 | +$902 |
Final balance after 15 years
$13,795
Invested
$5,000
Interest earned
$8,795
Multiplier
2.76×
How $5,000 grows at 7%
Compound interest earns returns on your returns — not just your original investment. At 7% per year, your money doubles every 10.3 years (the Rule of 72). Over 15 years, that compounds to a 2.76× multiplier.
In year 1, $5,000 earns $350 in interest. By year 15, the annual interest has grown to $902 — because each year's interest is calculated on a larger balance.
Year-by-year projection
| Year | Balance | Interest this year | Total interest | Growth |
|---|---|---|---|---|
| Year 1 | $5,350 | +$350 | $350 | 1.07× |
| Year 2 | $5,725 | +$375 | $725 | 1.14× |
| Year 3 | $6,125 | +$401 | $1,125 | 1.23× |
| Year 4 | $6,554 | +$429 | $1,554 | 1.31× |
| Year 5 | $7,013 | +$459 | $2,013 | 1.40× |
| Year 6 | $7,504 | +$491 | $2,504 | 1.50× |
| Year 7 | $8,029 | +$525 | $3,029 | 1.61× |
| Year 8 | $8,591 | +$562 | $3,591 | 1.72× |
| Year 9 | $9,192 | +$601 | $4,192 | 1.84× |
| Year 10 | $9,836 | +$643 | $4,836 | 1.97× |
| Year 11 | $10,524 | +$689 | $5,524 | 2.10× |
| Year 12 | $11,261 | +$737 | $6,261 | 2.25× |
| Year 13 | $12,049 | +$788 | $7,049 | 2.41× |
| Year 14 | $12,893 | +$843 | $7,893 | 2.58× |
| Year 15 | $13,795 | +$902 | $8,795 | 2.76× |
Growth chart
Balance growth over 15 years
Principal
Interest earned
Frequently asked questions
Explore other scenarios
$5,000 for 15 years — other rates
$5,000 at 7% — other time horizons
Related calculators
Compound Interest Calculator
Australia 2026
$
%
$
Total value after 15 years
$13,795
Amount invested$5,000
Interest earned$8,795
Interest multiplier2.76×
Year-by-year growth
| Year | Balance | Interest |
|---|---|---|
| Yr 1 | $5,350 | +$350 |
| Yr 2 | $5,725 | +$375 |
| Yr 3 | $6,125 | +$401 |
| Yr 4 | $6,554 | +$429 |
| Yr 5 | $7,013 | +$459 |
| Yr 6 | $7,504 | +$491 |
| Yr 7 | $8,029 | +$525 |
| Yr 8 | $8,591 | +$562 |
| Yr 9 | $9,192 | +$601 |
| Yr 10 | $9,836 | +$643 |
| Yr 11 | $10,524 | +$689 |
| Yr 12 | $11,261 | +$737 |
| Yr 13 | $12,049 | +$788 |
| Yr 14 | $12,893 | +$843 |
| Yr 15 | $13,795 | +$902 |