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How to Choose an ETF: A Beginner's Checklist

A practical, step-by-step checklist for comparing ETFs: what actually matters, what to ignore, and the mistakes that cost beginners the most.

Timothy Hirou GaschereauBy Timothy Hirou GaschereauPublished

11 min read

There are hundreds of ETFs listed on the ASX, and at first glance a lot of them look basically the same. Once you understand what an ETF actually is, and settled on that structure over an unlisted index fund, the next problem is picking one without it turning into a research project. It doesn't need to be. A handful of checks cover almost everything that actually matters.

Quick answer

When comparing ETFs, check five things: what it actually tracks, its ongoing fee (MER), its size and trading volume, how closely it's tracked its index historically, and whether it's physical or synthetic. If two ETFs are exposed to virtually the same thing, the cheaper, larger, more liquid one is usually the simpler pick.

In this guide

  • โ†’How to narrow hundreds of ETFs down using what you actually need it for
  • โ†’How to read a factsheet and spot what really separates two similar funds
  • โ†’Why a small fee gap turns into real money over decades
  • โ†’Why quoted trading volume understates how liquid a fund really is
  • โ†’Physical vs synthetic structures, and hedged vs unhedged
  • โ†’The checklist and the mistakes that cost beginners the most

๐Ÿค” Why choosing one feels harder than it should

๐ŸŽฏ The essential: Two ETFs can have nearly identical names and still hold meaningfully different things, so the name is a starting point, never the answer.

Part of the problem is naming. Two ETFs can have almost identical names and still hold meaningfully different things, one might screen out certain sectors, weight companies differently, or include assets the other doesn't. The name is a starting point, not the answer.

The other part is that most guides either explain ETFs from scratch, again, or jump straight into comparing specific funds without spelling out what you're actually meant to be looking at. This is the checklist in between.

๐ŸŽฏ Start with what it's for

Before comparing individual ETFs, get clear on the role you want this investment to play. Broad exposure to "the market" as a whole? A tilt toward a specific country, sector or theme? Income through dividends? Bonds to balance out shares? The answer narrows hundreds of ETFs down to a much smaller, relevant shortlist before you've even opened a comparison table.

In practice this usually sorts into a handful of common starting points: someone wanting one fund that covers the whole market without much thought is looking at a broad-market or diversified ETF; someone prioritising income over growth is looking at a dividend-focused ETF; someone who already holds Australian shares through work or family and wants to spread out is looking at an international ETF; someone getting more conservative as they near a goal is looking at bonds. None of these are mutually exclusive, but naming which one you actually are saves a lot of aimless comparing.

๐Ÿ” Know exactly what it tracks

Two "Australian shares" ETFs can hold very different things. One might track the ASX 200 (the 200 biggest companies), another might screen for specific factors like value or quality, and a third might be equal-weighted instead of size-weighted. None of that is visible from the name alone.

The fastest way to check is the fund's factsheet or product disclosure statement (PDS), every provider publishes one, and it'll state exactly which index the ETF tracks (or how it selects holdings if it's actively managed), along with a breakdown of sectors, countries and top holdings.

๐Ÿ“„ Reading a factsheet

Factsheets look intimidating until you know the shape of one, then they take under a minute to scan. Every provider lays theirs out a little differently, but the same pieces show up on almost all of them:

  • Fund objective: a one-line summary of what the ETF is actually trying to do.
  • Key facts panel: inception date, MER, fund size, and number of underlying holdings, usually in a small table near the top.
  • Top holdings: the biggest individual positions in the fund, useful for spotting concentration in one or two companies.
  • Sector and country breakdown: where the money actually sits, often as a pie chart or simple table.
  • Performance table: returns over set periods, shown against the index it's meant to be tracking, this is where you'd spot tracking error.

The full detail, including fees, risks and the exact methodology for selecting holdings, lives in the product disclosure statement (PDS), a longer, more formal document the factsheet is a summary of.

๐Ÿ’ฐ Compare the fees

๐ŸŽฏ The essential: When two funds hold virtually the same thing, the fee is quietly doing most of the deciding, whether you looked at it or not.

When two ETFs give you essentially the same exposure, the fee becomes the main thing separating them, and small-looking differences compound into real money over time.

๐Ÿ’ก

Worked example: two ETFs tracking almost the same index, one charging 0.07% p.a. and the other 0.45% p.a. On $50,000 invested for 30 years at an assumed 7% annual return before fees, that 0.38 percentage point gap works out to roughly $37,000 less by the end, purely from the fee difference, even though both funds are exposed to virtually the same companies.

๐Ÿงพ See what a fee gap costs you, with your own numbers

Compare two fee rates over your own investment amount and timeframe.

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๐Ÿ“ Check its size and liquidity

Two numbers worth glancing at: funds under management (FUM, or AUM), roughly how much money is invested in the fund overall, and average daily trading volume, how many units typically change hands each day. Both point toward the same thing: liquidity, how easily you can buy or sell without moving the price against yourself.

A small, thinly-traded ETF isn't necessarily a bad investment, but the gap between the buy and sell price (the "spread") tends to be wider, which quietly costs you a little more every time you trade it.

๐Ÿงฎ Why the traded volume isn't the whole liquidity story

๐ŸŽฏ The essential: A thinly-traded ETF isn't automatically illiquid, ASIC requires issuers to have a market maker keeping bid/ask spreads within set limits regardless of how much is changing hands that day.

Screen-traded volume is the number beginners fixate on, but it's not actually what determines whether you can get a fair price. ASIC's regulatory guide for exchange traded products (RG 282, updated November 2025) requires every ETF issuer to have at least one market maker under contract, an entity obligated to continuously quote both a buy and sell price within a maximum allowed spread, and to be able to create or redeem units directly with the fund to meet demand that the secondary market alone doesn't supply.

That's why an ETF showing low daily volume can still be traded in large size without moving the price much, the visible volume on screen is only part of the actual liquidity, which ultimately traces back to the liquidity of the underlying holdings the fund can create or redeem against. It's still worth checking volume and typical spread before placing a large order, but a quiet trading day on its own isn't proof a fund is hard to exit.

๐Ÿ“ˆ Look at tracking error

A passively managed ETF is meant to mirror its index, but it rarely does so perfectly. "Tracking error" measures how far the fund's actual return has drifted from its index over time, most providers publish this figure on the fund's factsheet. A consistently small tracking error is a sign the fund is doing its one job well.

๐Ÿ—๏ธ Physical vs synthetic

Most Australian ETFs are physical, meaning the fund actually buys and holds the underlying shares or bonds. A smaller number are synthetic, meaning the fund instead enters into a contract, usually a swap, with a counterparty who agrees to pay the fund the index's return, without the fund directly owning the underlying assets.

Synthetic structures exist because they can access markets that are impractical to hold directly, and can sometimes track an index more precisely. The trade-off is counterparty risk, if the institution on the other side of the swap ran into serious trouble, that's a risk on top of ordinary market risk. It's usually mitigated through collateral requirements, but it's a genuinely different risk profile to a physical ETF, and worth knowing which one you're holding.

๐Ÿ’ฑ Hedged or unhedged

If an ETF holds international assets, its return in Australian dollars depends on two things: how the underlying investments perform, and how the currency they're priced in moves against the AUD. An unhedged ETF leaves that currency movement in, a falling Australian dollar can boost your return, a rising one can drag on it, on top of whatever the market itself does.

A hedged ETF uses currency contracts to strip most of that effect out, so your return tracks the underlying market more closely, without the currency noise layered on top. Neither option is objectively better, hedging removes one source of volatility but also removes a form of diversification some investors actually want. It's usually stated clearly in the fund's name, "hedged" isn't the default, so an ETF without it in the name is typically unhedged.

โœ… The checklist, all in one place

What to check when comparing ETFs, and where to find it
CheckWhere to find it
What it actually tracksFactsheet or product disclosure statement (PDS)
Ongoing fee (MER)Factsheet, PDS, or the provider's website
Fund size (FUM/AUM)Factsheet or provider's website
Average daily trading volumeASX website or your broker's platform
Tracking errorFactsheet, usually shown against its benchmark index
Physical or synthetic structurePDS, under how the fund achieves its exposure

โš ๏ธ Mistakes that cost beginners the most

  • Chasing last year's best performer. Strong recent returns usually mean you're buying in after the gain, not before it.
  • Ignoring fees on "basically the same" fund. If two options hold nearly identical things, the fee is doing most of the deciding, whether you paid attention to it or not.
  • Buying something you can't explain in a sentence. If you can't say what an ETF holds and why, that's worth fixing before you buy it, not after.
  • Collecting near-duplicate ETFs. Owning three different broad-market ETFs doesn't triple your diversification, it mostly just triples your admin.

Choosing an ETF is one decision. Once you've got one, or a few, picked out, the next question is how they fit together, and whether you need more than one at all. That's covered in how to build a simple investment portfolio.

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โ“ Frequently asked questions

Is a bigger ETF always better?

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Not automatically, but size does matter for liquidity, a larger fund is generally easier to buy and sell at a fair price. It doesn't guarantee lower fees or better tracking though, so check those separately.

Should I pick the ETF with the highest past returns?

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No. Past performance doesn't predict future returns, and chasing whichever ETF did best last year is one of the most common ways beginners end up buying high, after the gains have already happened.

What's the real difference between two ETFs that track the same index?

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Usually just the fee and small differences in how closely each fund tracks the index. When the underlying exposure is essentially identical, the cheaper, larger, more liquid option is normally the simpler choice.

How do I actually see what's inside an ETF?

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Check the product disclosure statement (PDS) or the fund provider's own holdings page, most publish a full, updated list of what the ETF currently owns, along with sector and country breakdowns.

Is it a problem to own multiple ETFs that overlap a lot?

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It's not dangerous, but it doesn't add real diversification either, you're just paying more complexity for exposure you already have. Worth checking the overlap before adding a new ETF that's very similar to one you own.

Should I choose an ETF based on its distribution yield?

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Not on its own. A high yield can just mean the fund is concentrated in a handful of dividend-heavy sectors, which changes its risk profile. Look at the whole picture, not just the yield number.

Are synthetic ETFs unsafe?

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Not inherently, but they carry counterparty risk that physical ETFs don't, since the fund relies on another institution honouring a swap contract rather than owning the underlying assets directly. It's usually mitigated with collateral, but it's a genuinely different risk to be aware of.

Should I pick a hedged or unhedged international ETF?

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It depends on whether you want currency movements included in your return or stripped out. There's no universally correct answer, hedged reduces one source of volatility, unhedged adds a form of diversification. Check the fund's name, since hedged funds state it explicitly.

The checklist narrows things down, but the fee comparison is the one part worth running with your actual numbers, not just the general example above.

๐Ÿงพ Net Fees Calculator

See how much a fee difference really costs you over time.

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Some links above are affiliate links. If you buy through them, Snowball Invest may earn a small commission at no extra cost to you. We only recommend books we'd suggest anyway.

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Timothy Hirou Gaschereau

Timothy Hirou Gaschereau

Founder of Snowball Invest, not a financial adviser.

I write about what I'm learning myself, because nobody ever taught us how to take control of our own money. It's a skill, not a mystery, and it's never too late to learn it. The best day to start was yesterday, the second best is today.