Question 1

What does $1,000 grow to at 4% for 10 years?

Accepted Answer

$1,000 invested at 4% annual compound interest for 10 years grows to $1,480. Your original investment earns $480 in interest — a 48.0% total return and a 1.48× multiplier on your money.

Question 2

How long does it take to double money at 4%?

Accepted Answer

At 4% annual compound interest, your money doubles approximately every 18 years (the Rule of 72: 72 ÷ 4 = 18). Over 10 years, $1,000 has the potential to double 0.6 times.

Question 3

Is 4% a realistic return?

Accepted Answer

4% 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 4% for 10 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 4% return and 2.5% inflation, your real return is approximately 1.5% p.a. In real terms, $1,480 in 10 years would buy meaningfully less than it does today.

Year	Balance	Interest
Yr 1	$1,040	+$40
Yr 2	$1,082	+$42
Yr 3	$1,125	+$43
Yr 4	$1,170	+$45
Yr 5	$1,217	+$47
Yr 6	$1,265	+$49
Yr 7	$1,316	+$51
Yr 8	$1,369	+$53
Yr 9	$1,423	+$55
Yr 10	$1,480	+$57

Rate	Final balance	Interest earned	Multiplier
4% ◀	$1,480	$480	1.48×
5%	$1,629	$629	1.63×
6%	$1,791	$791	1.79×
7%	$1,967	$967	1.97×
8%	$2,159	$1,159	2.16×
9%	$2,367	$1,367	2.37×
10%	$2,594	$1,594	2.59×

Year	Balance	Interest this year	Total interest	Growth
Year 1	$1,040	+$40	$40	1.04×
Year 2	$1,082	+$42	$82	1.08×
Year 3	$1,125	+$43	$125	1.12×
Year 4	$1,170	+$45	$170	1.17×
Year 5	$1,217	+$47	$217	1.22×
Year 6	$1,265	+$49	$265	1.27×
Year 7	$1,316	+$51	$316	1.32×
Year 8	$1,369	+$53	$369	1.37×
Year 9	$1,423	+$55	$423	1.42×
Year 10	$1,480	+$57	$480	1.48×

Year	Balance	Interest
Yr 1	$1,040	+$40
Yr 2	$1,082	+$42
Yr 3	$1,125	+$43
Yr 4	$1,170	+$45
Yr 5	$1,217	+$47
Yr 6	$1,265	+$49
Yr 7	$1,316	+$51
Yr 8	$1,369	+$53
Yr 9	$1,423	+$55
Yr 10	$1,480	+$57

$1,000 at 4% for 10 Years

How $1,000 grows at 4%

Year-by-year projection

Growth chart

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