ETF Return Calculator NZ
This calculator projects how an exchange-traded fund investment could grow in New Zealand once you factor in price growth, dividends and the annual fund fee, so you can see a realistic, fee-aware outcome rather than a headline return figure. You enter your initial investment, any monthly contribution you plan to keep adding, the total return you expect, the fund's annual fee, and the number of years you intend to invest. The calculator compounds your investment and contributions monthly at the net return, after the fee is deducted, over your chosen timeframe. It returns your projected ETF balance after fees, alongside a breakdown showing the total amount you contributed, how much came from growth, and how much was lost to fees compared with a fee-free version of the same investment. This split makes the true cost of fees visible, which matters because ETFs are popular partly for their low fees, yet even a small annual percentage compounds meaningfully over a long timeframe. Use it to compare funds with different fee levels, to test how contributions or timeframe change the outcome, or to see how much fees quietly erode your balance. Remember that the projection assumes a steady annual return, while real markets rise and fall, and that tax may apply, including the FIF rules for overseas-domiciled ETFs. This is an indicative planning estimate only, not financial or tax advice.
Total return is price growth plus dividends; the fee is deducted from it. Returns are assumed steady and are not guaranteed, and tax may apply, including FIF rules on overseas ETFs. Estimate only, not financial advice.
How it works
The calculator grows your initial investment and monthly contributions at your expected total return, less the annual fee, compounding monthly over your timeframe. It separates the result into what you contributed and the growth on top, and shows how much a fee-free version would have built, so you can see the fee drag. ETFs are often low-fee, which helps, but every bit of fee compounds.
Worked example
Investing $10,000 plus $400 a month at a 7% return with a 0.3% fee over 20 years builds to roughly $230,000, of which about $106,000 is contributions. A higher fund fee would noticeably reduce the result, which is why ETF investors watch fees closely.
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