★ NZ Investment Calculator · compound interest

See how your money grows.

Solve for end balance, starting amount, contributions, return rate or time horizon — compound interest and inflation-adjusted returns, built for NZ.

Investment Details

Enter your investment parameters below

$
$
years
% p.a.
$
The End Amount tab calculates the total balance your investment will reach at the end of the period.
End Balance
$198,290
after 10 years at 7% p.a.
Starting Amount$20,000
Total Contributions$120,000
Total Interest Earned$58,290
End Balance $198,290
Effective Annual Rate7.23%
Starting %
10%
of end balance
Contributions %
61%
of end balance
Interest %
29%
of end balance
Growth Multiple
9.9×
vs starting amount

Accumulation Schedule

Starting Amount
Contributions
Interest
Accumulation Table
Year Deposit Interest Ending Balance
Indicative only — not financial advice. Calculations assume a fixed rate of return and regular contributions. Actual investment returns vary. Please consult a licensed financial adviser before making investment decisions.