For many New Zealanders, KiwiSaver is quietly becoming one of the largest assets they’ll ever own. Yet despite its importance, it’s often one of the least understood parts of a person’s financial life.

Most people join KiwiSaver through their first job, select a fund (or end up in a default one), set their contribution rate and rarely think about it again. Years pass, balances grow, markets rise and fall, and before they know it they’re approaching retirement with hundreds of thousands of dollars invested in a fund they may never have consciously chosen.

The reality is that small decisions made today can have a significant impact on your retirement outcome.

One of the biggest factors is choosing a fund that matches your goals and timeframe. If retirement is still 20 or 30 years away, remaining in a conservative fund simply because it feels “safer” can come at a considerable long-term cost. While conservative funds generally experience less short-term volatility, they also tend to produce lower long-term returns than growth-oriented funds. Over several decades, the difference between the two can amount to hundreds of thousands of dollars.

Of course, that doesn’t mean everyone should be in a Growth Fund. Your age, investment timeframe, financial situation and comfort with market fluctuations all matter. The right fund is the one that’s appropriate for your circumstances—not necessarily the one with the highest recent returns. That’s why reviewing your KiwiSaver regularly is so important.

Contribution rates are another area that is often overlooked. Many New Zealanders remain on the default 3% contribution simply because that’s where they started. While contributing something is always better than nothing, increasing your contribution rate—even by a small amount—can make a meaningful difference over your working life. The earlier those additional contributions begin, the longer they have to benefit from compound investment returns.

Recent changes to KiwiSaver contribution rates have also brought renewed attention to retirement savings. The Government has legislated gradual increases to the default employee and employer contribution rates over the coming years, with the standard rate set to rise from 3% to 4%. For many New Zealanders, these changes will help accelerate retirement savings without requiring large adjustments all at once. While contributing more may slightly reduce your take-home pay today, it can have a meaningful impact on your future financial security.

Many people are also unaware that KiwiSaver isn’t just about retirement. It can play an important role in helping eligible first-home buyers purchase their first property through the First Home Withdrawal. Combined with regular savings and the potential for long-term investment growth, KiwiSaver can become one of the most effective wealth-building tools available to young New Zealanders.

Another common misconception is that once you’ve chosen a provider, there’s no reason to review it. In reality, KiwiSaver providers differ in their investment philosophy, fees, portfolio construction, responsible investment approach, member services and long-term performance. As your life changes, the provider or fund that suited you five years ago may no longer be the best fit today.

Ultimately, KiwiSaver shouldn’t be treated as a “set and forget” investment. It deserves the same attention as any other major financial decision because, for many people, it will become one of their largest financial assets outside their family home.

Taking the time to review your fund, contribution rate and long-term strategy could be one of the most valuable financial decisions you make. A simple review today may help you retire with greater confidence tomorrow.