Question 1

What does $1,000 grow to at 5% for 20 years?

Accepted Answer

$1,000 invested at 5% annual compound interest for 20 years grows to $2,653. Your original investment earns $1,653 in interest — a 165.3% total return and a 2.65× multiplier on your money.

Question 2

How long does it take to double money at 5%?

Accepted Answer

At 5% annual compound interest, your money doubles approximately every 14.4 years (the Rule of 72: 72 ÷ 5 = 14.4). Over 20 years, $1,000 has the potential to double 1.4 times.

Question 3

Is 5% a realistic return?

Accepted Answer

5% is a conservative assumption achievable through high-interest savings accounts or term deposits. It's a realistic baseline for low-risk investments, though actual rates vary with market conditions.

Question 4

What's the effect of adding regular contributions?

Accepted Answer

These figures show a one-time lump sum of $1,000 with no additional contributions. Adding regular contributions compounds the growth dramatically. For example, adding $200/month to $1,000 at 5% for 20 years would result in a significantly larger final balance. Use the interactive calculator above to model your own contribution amount.

Question 5

How does inflation affect this result?

Accepted Answer

This calculator shows nominal returns — the dollar figures before adjusting for inflation. Australia's historical inflation rate is around 2–3% per year. To estimate real purchasing power, subtract the inflation rate from your return: at 5% return and 2.5% inflation, your real return is approximately 2.5% p.a. In real terms, $2,653 in 20 years would buy meaningfully less than it does today.

Year	Balance	Interest
Yr 1	$1,050	+$50
Yr 2	$1,103	+$53
Yr 3	$1,158	+$55
Yr 4	$1,216	+$58
Yr 5	$1,276	+$61
Yr 6	$1,340	+$64
Yr 7	$1,407	+$67
Yr 8	$1,477	+$70
Yr 9	$1,551	+$74
Yr 10	$1,629	+$78
Yr 11	$1,710	+$81
Yr 12	$1,796	+$86
Yr 13	$1,886	+$90
Yr 14	$1,980	+$94
Yr 15	$2,079	+$99
Yr 16	$2,183	+$104
Yr 17	$2,292	+$109
Yr 18	$2,407	+$115
Yr 19	$2,527	+$120
Yr 20	$2,653	+$126

Rate	Final balance	Interest earned	Multiplier
4%	$2,191	$1,191	2.19×
5% ◀	$2,653	$1,653	2.65×
6%	$3,207	$2,207	3.21×
7%	$3,870	$2,870	3.87×
8%	$4,661	$3,661	4.66×
9%	$5,604	$4,604	5.60×
10%	$6,727	$5,727	6.73×

Year	Balance	Interest this year	Total interest	Growth
Year 1	$1,050	+$50	$50	1.05×
Year 2	$1,103	+$53	$103	1.10×
Year 3	$1,158	+$55	$158	1.16×
Year 4	$1,216	+$58	$216	1.22×
Year 5	$1,276	+$61	$276	1.28×
Year 6	$1,340	+$64	$340	1.34×
Year 7	$1,407	+$67	$407	1.41×
Year 8	$1,477	+$70	$477	1.48×
Year 9	$1,551	+$74	$551	1.55×
Year 10	$1,629	+$78	$629	1.63×
Year 11	$1,710	+$81	$710	1.71×
Year 12	$1,796	+$86	$796	1.80×
Year 13	$1,886	+$90	$886	1.89×
Year 14	$1,980	+$94	$980	1.98×
Year 15	$2,079	+$99	$1,079	2.08×
Year 16	$2,183	+$104	$1,183	2.18×
Year 17	$2,292	+$109	$1,292	2.29×
Year 18	$2,407	+$115	$1,407	2.41×
Year 19	$2,527	+$120	$1,527	2.53×
Year 20	$2,653	+$126	$1,653	2.65×

Year	Balance	Interest
Yr 1	$1,050	+$50
Yr 2	$1,103	+$53
Yr 3	$1,158	+$55
Yr 4	$1,216	+$58
Yr 5	$1,276	+$61
Yr 6	$1,340	+$64
Yr 7	$1,407	+$67
Yr 8	$1,477	+$70
Yr 9	$1,551	+$74
Yr 10	$1,629	+$78
Yr 11	$1,710	+$81
Yr 12	$1,796	+$86
Yr 13	$1,886	+$90
Yr 14	$1,980	+$94
Yr 15	$2,079	+$99
Yr 16	$2,183	+$104
Yr 17	$2,292	+$109
Yr 18	$2,407	+$115
Yr 19	$2,527	+$120
Yr 20	$2,653	+$126

$1,000 at 5% for 20 Years

How $1,000 grows at 5%

Year-by-year projection

Growth chart

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