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Shares, ETFs and investingUpdated 2026-05-01

Brokerage accounts, CHESS sponsorship, and micro-investing apps

How an Australian brokerage account is set up, the difference between a CHESS-sponsored HIN and a custodial account, and where micro-investing apps like Raiz, Spaceship and Sharesies fit in for small balances.

Three pieces of plumbing decide what actually happens when you "buy a share" in Australia: the broker, the clearing house, and the share registry. Understanding all three explains the practical differences between a traditional CHESS-sponsored brokerage account and the newer micro-investing apps.

How CHESS works

CHESS stands for Clearing House Electronic Subregister System. It is the ASX-operated electronic settlement system that records who owns every ASX-listed share. When you buy a share through a CHESS-sponsored broker:

  1. The broker submits the order to the ASX.
  2. The trade matches against a seller and executes.
  3. Two business days later (T+2), ASX Clear nets the cash and the shares.
  4. CHESS records you as the direct legal owner on the issuer's share register, identified by your HIN.
  5. The share registry (Computershare, Link or MUFG, depending on the issuer) sends you holder-confirmation correspondence directly.

Three things follow from being a direct CHESS holder:

  • Portability. You can move your HIN to a different broker without selling. No capital gains tax is triggered. The receiving broker submits a sponsorship-transfer form and the HIN moves across, usually within a fortnight.
  • Direct corporate actions. The company writes to you about dividends, dividend reinvestment plans (DRPs), capital raisings and AGM voting through the registry.
  • Counterparty robustness. If the broker fails, you still own the shares directly through CHESS. Your access to them does not depend on the broker existing tomorrow.

The full mechanics are documented on the ASX CHESS information pages.

What a custodial account is and is not

A custodial (or "omnibus") arrangement looks the same from the user interface but the legal structure is different. The platform's licensed custodian appears on the CHESS register as the legal owner of one big pool of shares. The platform's internal books record what fraction of that pool each user beneficially owns.

Custodial structures power most low-fee or zero-brokerage apps, including the micro-investing apps below and several "international shares" platforms. They make economic sense for the operator because the custodian only has to deal with whole-share parcels, not 200,000 individual HINs.

What changes for the user:

  • Fractional shares are possible. The platform can sell you 0.137 of an iShares S&P 500 unit because the underlying parcel is owned by the custodian, not you.
  • No HIN means no portability. To switch platforms you must sell on the old one and rebuy on the new, which triggers capital gains tax on any profit. The Australian Tax Office treats this as a disposal even if you immediately buy back the same security.
  • Counterparty exposure. If the platform fails, you have a claim on the pool through the custodian. The custodian is normally a large, separately licensed entity (such as Sandhurst Trustees or a major bank's trust arm), so the practical risk is low, but the legal layer is one step removed compared with direct CHESS sponsorship.
  • Some corporate actions are simplified. The platform may not let you vote at AGMs or take up rights issues, because the custodian acts on behalf of the whole pool.

ASIC publishes guidance on custodial structures on the clearing and settlement pages.

Micro-investing apps

The Australian apps in this category use custodial structures to allow very small parcel sizes. Three are commonly cited:

  • Raiz. Round-up model: links to a debit card and rounds each purchase up to the nearest dollar, sweeping the spare change into a portfolio of ETFs. Monthly account fees are typically 4.50onbalancesunder4.50 on balances under 20,000, which is a material drag on a 100balance(54percentannualised)butasmalldragona100 balance (54 percent annualised) but a small drag on a 5,000 balance (1 percent).
  • Spaceship Voyager. Theme-based pooled investments in tech-tilted or diversified portfolios. No transaction fee, percentage-based management fee on balances above a small threshold.
  • Sharesies. Originally New Zealand, expanded to Australia. Offers fractional ASX, NZX and US shares plus a range of ETFs. Charges a percentage on each transaction.

ASIC Moneysmart's micro-investing apps page maintains a current comparison of fees and structures.

A reasonable way to think about these for someone under 25:

  • Strength: they let you start with 5or5 or 10 and learn the rhythm of investing (deposits, allocation, distributions, tax statements) before you have enough capital for direct brokerage.
  • Weakness: monthly flat fees on tiny balances are punishing. Once your balance crosses a few thousand dollars, a direct CHESS-sponsored brokerage account is usually cheaper and gives you portability.
  • The graduation path: most users start on a micro-investing app, then open a direct CHESS-sponsored brokerage account once their balance reaches around 5,000to5,000 to 10,000, leaving the micro-investing app running for round-up contributions and using the brokerage account for larger lump-sum buys.

Choosing a CHESS-sponsored broker

The discount brokers in this segment compete on three figures: brokerage per trade, the monthly inactivity fee (if any), and the spread on currency conversion for international trades. Reasonable comparison points published on each broker's site are:

  • Cost per ASX trade for a $1,000 parcel.
  • Cost per US trade including the AUD/USD conversion fee.
  • Whether they offer DRP support and SMSF accounts (relevant later, not at 18).

The ASX maintains a participant list of licensed brokers. ASIC's Moneysmart maintains comparison guidance on its investment platforms pages.

This is general explanatory information, not financial advice. For advice on whether direct shares, ETFs or a micro-investing app suit your circumstances, see a licensed financial adviser.

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