📈 Compound Interest
$2,000 at 7% for 15 Years
Investing $2,000 at 7% annual compound interest for 15 years grows to $5,518. That's $3,518 earned in interest on top of your original $2,000.
Compound Interest Calculator
Australia 2026
$
%
$
Total value after 15 years
$5,518
Amount invested$2,000
Interest earned$3,518
Interest multiplier2.76×
Year-by-year growth
| Year | Balance | Interest |
|---|---|---|
| Yr 1 | $2,140 | +$140 |
| Yr 2 | $2,290 | +$150 |
| Yr 3 | $2,450 | +$160 |
| Yr 4 | $2,622 | +$172 |
| Yr 5 | $2,805 | +$184 |
| Yr 6 | $3,001 | +$196 |
| Yr 7 | $3,212 | +$210 |
| Yr 8 | $3,436 | +$225 |
| Yr 9 | $3,677 | +$241 |
| Yr 10 | $3,934 | +$257 |
| Yr 11 | $4,210 | +$275 |
| Yr 12 | $4,504 | +$295 |
| Yr 13 | $4,820 | +$315 |
| Yr 14 | $5,157 | +$337 |
| Yr 15 | $5,518 | +$361 |
Final balance after 15 years
$5,518
Invested
$2,000
Interest earned
$3,518
Multiplier
2.76×
How $2,000 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, $2,000 earns $140 in interest. By year 15, the annual interest has grown to $361 — 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 | $2,140 | +$140 | $140 | 1.07× |
| Year 2 | $2,290 | +$150 | $290 | 1.14× |
| Year 3 | $2,450 | +$160 | $450 | 1.23× |
| Year 4 | $2,622 | +$172 | $622 | 1.31× |
| Year 5 | $2,805 | +$184 | $805 | 1.40× |
| Year 6 | $3,001 | +$196 | $1,001 | 1.50× |
| Year 7 | $3,212 | +$210 | $1,212 | 1.61× |
| Year 8 | $3,436 | +$225 | $1,436 | 1.72× |
| Year 9 | $3,677 | +$241 | $1,677 | 1.84× |
| Year 10 | $3,934 | +$257 | $1,934 | 1.97× |
| Year 11 | $4,210 | +$275 | $2,210 | 2.10× |
| Year 12 | $4,504 | +$295 | $2,504 | 2.25× |
| Year 13 | $4,820 | +$315 | $2,820 | 2.41× |
| Year 14 | $5,157 | +$337 | $3,157 | 2.58× |
| Year 15 | $5,518 | +$361 | $3,518 | 2.76× |
Growth chart
Balance growth over 15 years
Principal
Interest earned
Frequently asked questions
Explore other scenarios
$2,000 for 15 years — other rates
$2,000 at 7% — other time horizons
Related calculators
Compound Interest Calculator
Australia 2026
$
%
$
Total value after 15 years
$5,518
Amount invested$2,000
Interest earned$3,518
Interest multiplier2.76×
Year-by-year growth
| Year | Balance | Interest |
|---|---|---|
| Yr 1 | $2,140 | +$140 |
| Yr 2 | $2,290 | +$150 |
| Yr 3 | $2,450 | +$160 |
| Yr 4 | $2,622 | +$172 |
| Yr 5 | $2,805 | +$184 |
| Yr 6 | $3,001 | +$196 |
| Yr 7 | $3,212 | +$210 |
| Yr 8 | $3,436 | +$225 |
| Yr 9 | $3,677 | +$241 |
| Yr 10 | $3,934 | +$257 |
| Yr 11 | $4,210 | +$275 |
| Yr 12 | $4,504 | +$295 |
| Yr 13 | $4,820 | +$315 |
| Yr 14 | $5,157 | +$337 |
| Yr 15 | $5,518 | +$361 |