Question 1

What does $2,000 grow to at 5% for 15 years?

Accepted Answer

$2,000 invested at 5% annual compound interest for 15 years grows to $4,158. Your original investment earns $2,158 in interest — a 107.9% total return and a 2.08× 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 15 years, $2,000 has the potential to double 1.0 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 $2,000 with no additional contributions. Adding regular contributions compounds the growth dramatically. For example, adding $200/month to $2,000 at 5% for 15 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, $4,158 in 15 years would buy meaningfully less than it does today.

Year	Balance	Interest
Yr 1	$2,100	+$100
Yr 2	$2,205	+$105
Yr 3	$2,315	+$110
Yr 4	$2,431	+$116
Yr 5	$2,553	+$122
Yr 6	$2,680	+$128
Yr 7	$2,814	+$134
Yr 8	$2,955	+$141
Yr 9	$3,103	+$148
Yr 10	$3,258	+$155
Yr 11	$3,421	+$163
Yr 12	$3,592	+$171
Yr 13	$3,771	+$180
Yr 14	$3,960	+$189
Yr 15	$4,158	+$198

Rate	Final balance	Interest earned	Multiplier
4%	$3,602	$1,602	1.80×
5% ◀	$4,158	$2,158	2.08×
6%	$4,793	$2,793	2.40×
7%	$5,518	$3,518	2.76×
8%	$6,344	$4,344	3.17×
9%	$7,285	$5,285	3.64×
10%	$8,354	$6,354	4.18×

Year	Balance	Interest this year	Total interest	Growth
Year 1	$2,100	+$100	$100	1.05×
Year 2	$2,205	+$105	$205	1.10×
Year 3	$2,315	+$110	$315	1.16×
Year 4	$2,431	+$116	$431	1.22×
Year 5	$2,553	+$122	$553	1.28×
Year 6	$2,680	+$128	$680	1.34×
Year 7	$2,814	+$134	$814	1.41×
Year 8	$2,955	+$141	$955	1.48×
Year 9	$3,103	+$148	$1,103	1.55×
Year 10	$3,258	+$155	$1,258	1.63×
Year 11	$3,421	+$163	$1,421	1.71×
Year 12	$3,592	+$171	$1,592	1.80×
Year 13	$3,771	+$180	$1,771	1.89×
Year 14	$3,960	+$189	$1,960	1.98×
Year 15	$4,158	+$198	$2,158	2.08×

Year	Balance	Interest
Yr 1	$2,100	+$100
Yr 2	$2,205	+$105
Yr 3	$2,315	+$110
Yr 4	$2,431	+$116
Yr 5	$2,553	+$122
Yr 6	$2,680	+$128
Yr 7	$2,814	+$134
Yr 8	$2,955	+$141
Yr 9	$3,103	+$148
Yr 10	$3,258	+$155
Yr 11	$3,421	+$163
Yr 12	$3,592	+$171
Yr 13	$3,771	+$180
Yr 14	$3,960	+$189
Yr 15	$4,158	+$198

$2,000 at 5% for 15 Years

How $2,000 grows at 5%

Year-by-year projection

Growth chart

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