Question 1

What does $5,000 grow to at 8% for 10 years?

Accepted Answer

$5,000 invested at 8% annual compound interest for 10 years grows to $10,795. Your original investment earns $5,795 in interest — a 115.9% total return and a 2.16× multiplier on your money.

Question 2

How long does it take to double money at 8%?

Accepted Answer

At 8% annual compound interest, your money doubles approximately every 9 years (the Rule of 72: 72 ÷ 8 = 9). Over 10 years, $5,000 has the potential to double 1.1 times.

Question 3

Is 8% a realistic return?

Accepted Answer

8% is a moderate return that aligns with long-term historical averages for diversified share portfolios. The ASX 200 has returned around 9–10% p.a. including dividends historically, so 8% is realistic over long periods after accounting for fees and portfolio mix.

Question 4

What's the effect of adding regular contributions?

Accepted Answer

These figures show a one-time lump sum of $5,000 with no additional contributions. Adding regular contributions compounds the growth dramatically. For example, adding $200/month to $5,000 at 8% 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 8% return and 2.5% inflation, your real return is approximately 5.5% p.a. In real terms, $10,795 in 10 years would buy meaningfully less than it does today.

Year	Balance	Interest
Yr 1	$5,400	+$400
Yr 2	$5,832	+$432
Yr 3	$6,299	+$467
Yr 4	$6,802	+$504
Yr 5	$7,347	+$544
Yr 6	$7,934	+$588
Yr 7	$8,569	+$635
Yr 8	$9,255	+$686
Yr 9	$9,995	+$740
Yr 10	$10,795	+$800

Rate	Final balance	Interest earned	Multiplier
4%	$7,401	$2,401	1.48×
5%	$8,144	$3,144	1.63×
6%	$8,954	$3,954	1.79×
7%	$9,836	$4,836	1.97×
8% ◀	$10,795	$5,795	2.16×
9%	$11,837	$6,837	2.37×
10%	$12,969	$7,969	2.59×

Year	Balance	Interest this year	Total interest	Growth
Year 1	$5,400	+$400	$400	1.08×
Year 2	$5,832	+$432	$832	1.17×
Year 3	$6,299	+$467	$1,299	1.26×
Year 4	$6,802	+$504	$1,802	1.36×
Year 5	$7,347	+$544	$2,347	1.47×
Year 6	$7,934	+$588	$2,934	1.59×
Year 7	$8,569	+$635	$3,569	1.71×
Year 8	$9,255	+$686	$4,255	1.85×
Year 9	$9,995	+$740	$4,995	2.00×
Year 10	$10,795	+$800	$5,795	2.16×

Year	Balance	Interest
Yr 1	$5,400	+$400
Yr 2	$5,832	+$432
Yr 3	$6,299	+$467
Yr 4	$6,802	+$504
Yr 5	$7,347	+$544
Yr 6	$7,934	+$588
Yr 7	$8,569	+$635
Yr 8	$9,255	+$686
Yr 9	$9,995	+$740
Yr 10	$10,795	+$800

$5,000 at 8% for 10 Years

How $5,000 grows at 8%

Year-by-year projection

Growth chart

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