IOZ ETF Australia: iShares Core S&P/ASX 200 Guide

What is IOZ?🔗

IOZ is a passively managed, physically backed ETF. Its objective is simple: track the S&P/ASX 200 Accumulation Index before fees. That index is maintained by S&P Dow Jones Indices and represents the 200 largest ASX-listed companies, weighted by market capitalisation. Accumulation means the benchmark assumes dividends are reinvested, so it captures both price growth and income, which is the right way to measure total returns. The fund launched in December 2010 and has grown to roughly $9.6 billion in assets, weathering the 2020 COVID crash and the 2022 rate-rise selloff along the way.

What does IOZ actually hold?🔗

IOZ uses full replication, buying the actual shares rather than derivatives. As at August 2026 the top holdings were BHP (12.3%), Commonwealth Bank (9.5%), NAB (4.2%), Westpac (4.2%), ANZ (4.0%), Wesfarmers, Macquarie, CSL, Rio Tinto and Woodside. The top 10 alone make up roughly 48% of the fund: a lot of concentration in a handful of names.

Here is where the concentration story really lands:

When you buy IOZ you are making a fairly concentrated bet on Australian banks (CBA, NAB, Westpac, ANZ, Macquarie) and miners (BHP, Rio Tinto). That is not necessarily bad, but it is worth understanding clearly: this is the shape of the Australian market, not a globally diversified portfolio.

The fee: what 0.05% actually costs🔗

The management expense ratio (MER) is the annual fee, deducted automatically from the fund's assets so you never write a cheque. 0.05% sounds tiny, and it is:

The gap between IOZ and A200 on $100,000 is $10 a year. Between IOZ and VAS, $20. These are not meaningful numbers. Do not let fee anxiety stop you investing, or push you into switching funds every time a fractionally cheaper option appears.

IOZ vs VAS vs A200: the big three compared🔗

IOZ vs A200: both target the top 200. IOZ uses the well-known S&P/ASX 200; A200 uses the cheaper-to-license Solactive index, which is how BetaShares shaves 0.01% off the fee. The portfolios are nearly identical. IOZ vs VAS: VAS adds about 100 mid-caps via the ASX 300, but they are only 3 to 4% of the portfolio by weight, so returns have been very similar. VAS is the largest and most liquid of the three.

Distributions and franking credits🔗

IOZ pays quarterly distributions, typically in January, April, July and October, with a 12-month trailing yield of roughly 3.3%. On $100,000 that is about $3,300 a year before tax. Distributions carry franking credits: Australian companies pay 30% company tax before paying dividends and can attach credits for that tax already paid, which you use to reduce your own tax bill (and if your marginal rate is below 30%, you may get a refund). Franking varies by period, and the October distribution is usually the most heavily franked because it captures the big banks' reporting-season dividends. See how dividends are taxed and franking credits explained for the detail. A distribution reinvestment plan (DRP) is available through many brokers.

Performance: honest expectations🔗

IOZ tracks its benchmark very closely, trailing by only about 0.1% a year from fees and transaction costs. Over the past decade it returned roughly 8.9% p.a., but a few honest caveats matter. Past returns are not a guide to the future. The ASX 200 is concentrated in banks and miners and light on technology, so it can lag global ETFs for extended periods (through the 2020 to 2024 tech-led run, global funds like VGS significantly outpaced it). Much of the ASX 200's return also comes from dividends and franking rather than capital growth. And markets fall: IOZ dropped about 1% in 2022. A reasonable long-run expectation is 7 to 10% p.a. total return with real year-to-year volatility. Plan accordingly.

How to buy IOZ🔗

IOZ trades on the ASX like any share. Open a brokerage account (CommSec, Pearler, Stake, SelfWealth, CMC Markets), fund it, and search the ticker IOZ (units are roughly $30 to $35, and the minimum is one unit). Use a limit order rather than a market order so you control the price, and ASIC's Moneysmart suggests waiting at least 30 minutes after the open before trading ETFs so the price reflects the underlying value. Read BlackRock's Product Disclosure Statement before investing. If you would rather not manage a separate Australian and global ETF, an all-in-one fund like DHHF or VDHG does the diversification for you.

Frequently asked questions🔗

Sources🔗

1. BlackRock, iShares IOZ product page
2. ASIC Moneysmart, exchange traded funds (ETFs)
3. ATO, ETFs and their tax treatment
4. ASX, IOZ listing page

General information only, not personal financial advice. It does not take your circumstances into account. Fund details, fees and holdings change over time, so verify current figures with the BlackRock fact sheet and PDS before investing. Past performance is not a reliable indicator of future performance.