📈 Compound Interest
$2,000 at 8% for 20 Years
Investing $2,000 at 8% annual compound interest for 20 years grows to $9,322. That's $7,322 earned in interest on top of your original $2,000.
Compound Interest Calculator
Australia 2026
$
%
$
Total value after 20 years
$9,322
Amount invested$2,000
Interest earned$7,322
Interest multiplier4.66×
Year-by-year growth
| Year | Balance | Interest |
|---|---|---|
| Yr 1 | $2,160 | +$160 |
| Yr 2 | $2,333 | +$173 |
| Yr 3 | $2,519 | +$187 |
| Yr 4 | $2,721 | +$202 |
| Yr 5 | $2,939 | +$218 |
| Yr 6 | $3,174 | +$235 |
| Yr 7 | $3,428 | +$254 |
| Yr 8 | $3,702 | +$274 |
| Yr 9 | $3,998 | +$296 |
| Yr 10 | $4,318 | +$320 |
| Yr 11 | $4,663 | +$345 |
| Yr 12 | $5,036 | +$373 |
| Yr 13 | $5,439 | +$403 |
| Yr 14 | $5,874 | +$435 |
| Yr 15 | $6,344 | +$470 |
| Yr 16 | $6,852 | +$508 |
| Yr 17 | $7,400 | +$548 |
| Yr 18 | $7,992 | +$592 |
| Yr 19 | $8,631 | +$639 |
| Yr 20 | $9,322 | +$691 |
Final balance after 20 years
$9,322
Invested
$2,000
Interest earned
$7,322
Multiplier
4.66×
How $2,000 grows at 8%
Compound interest earns returns on your returns — not just your original investment. At 8% per year, your money doubles every 9 years (the Rule of 72). Over 20 years, that compounds to a 4.66× multiplier.
In year 1, $2,000 earns $160 in interest. By year 20, the annual interest has grown to $691 — 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 | $2,160 | +$160 | $160 | 1.08× |
| Year 2 | $2,333 | +$173 | $333 | 1.17× |
| Year 3 | $2,519 | +$187 | $519 | 1.26× |
| Year 4 | $2,721 | +$202 | $721 | 1.36× |
| Year 5 | $2,939 | +$218 | $939 | 1.47× |
| Year 6 | $3,174 | +$235 | $1,174 | 1.59× |
| Year 7 | $3,428 | +$254 | $1,428 | 1.71× |
| Year 8 | $3,702 | +$274 | $1,702 | 1.85× |
| Year 9 | $3,998 | +$296 | $1,998 | 2.00× |
| Year 10 | $4,318 | +$320 | $2,318 | 2.16× |
| Year 11 | $4,663 | +$345 | $2,663 | 2.33× |
| Year 12 | $5,036 | +$373 | $3,036 | 2.52× |
| Year 13 | $5,439 | +$403 | $3,439 | 2.72× |
| Year 14 | $5,874 | +$435 | $3,874 | 2.94× |
| Year 15 | $6,344 | +$470 | $4,344 | 3.17× |
| Year 16 | $6,852 | +$508 | $4,852 | 3.43× |
| Year 17 | $7,400 | +$548 | $5,400 | 3.70× |
| Year 18 | $7,992 | +$592 | $5,992 | 4.00× |
| Year 19 | $8,631 | +$639 | $6,631 | 4.32× |
| Year 20 | $9,322 | +$691 | $7,322 | 4.66× |
Growth chart
Balance growth over 20 years
Principal
Interest earned
Frequently asked questions
Explore other scenarios
$2,000 for 20 years — other rates
$2,000 at 8% — other time horizons
Related calculators
Compound Interest Calculator
Australia 2026
$
%
$
Total value after 20 years
$9,322
Amount invested$2,000
Interest earned$7,322
Interest multiplier4.66×
Year-by-year growth
| Year | Balance | Interest |
|---|---|---|
| Yr 1 | $2,160 | +$160 |
| Yr 2 | $2,333 | +$173 |
| Yr 3 | $2,519 | +$187 |
| Yr 4 | $2,721 | +$202 |
| Yr 5 | $2,939 | +$218 |
| Yr 6 | $3,174 | +$235 |
| Yr 7 | $3,428 | +$254 |
| Yr 8 | $3,702 | +$274 |
| Yr 9 | $3,998 | +$296 |
| Yr 10 | $4,318 | +$320 |
| Yr 11 | $4,663 | +$345 |
| Yr 12 | $5,036 | +$373 |
| Yr 13 | $5,439 | +$403 |
| Yr 14 | $5,874 | +$435 |
| Yr 15 | $6,344 | +$470 |
| Yr 16 | $6,852 | +$508 |
| Yr 17 | $7,400 | +$548 |
| Yr 18 | $7,992 | +$592 |
| Yr 19 | $8,631 | +$639 |
| Yr 20 | $9,322 | +$691 |