When you buy shares in Australia, a question most beginners never think to ask is: who actually owns them, and where are they held? The answer depends on your broker, because there are two very different models for holding ASX shares — CHESS-sponsored and the custodian (or custodial) model. Both are legal and widely used, but they have real consequences for your ownership rights, how easily you can switch brokers, and what happens if your broker gets into trouble.
This guide explains the two models plainly, weighs up the pros and cons, and shows why the difference matters. It’s a natural companion to our walkthrough on how to buy shares in Australia and our pillar guide on how to invest in shares in Australia.
What Is CHESS?
CHESS stands for the Clearing House Electronic Subregister System — the ASX’s electronic system that records the ownership of shares and settles trades. It’s the official register of who owns what on the Australian sharemarket. Understanding CHESS is the key to understanding the two holding models.
The CHESS-Sponsored Model
Under the CHESS-sponsored model, when you buy shares they are registered directly in your own name on CHESS. You’re issued a unique Holder Identification Number (HIN) — a code that identifies your holdings on the register. You are the legal owner, recorded on the official register, and the broker simply “sponsors” your HIN to place trades on your behalf.
Key features:
- Shares are held in your name, not the broker’s.
- You get a HIN and receive holding statements directly.
- You’re registered with the share registry, so you receive company communications, dividends and voting rights directly.
- If your broker fails, your shares are on the ASX register in your name — they’re not caught up in the broker’s assets.
The Custodian Model
Under the custodian (custodial) model, the broker — or a custodian company it appoints — holds the shares on your behalf. On the CHESS register, the shares appear under the broker’s or custodian’s HIN, not yours. Your ownership is recorded in the broker’s internal system as a beneficial owner, meaning you’re entitled to the shares even though your name isn’t on the ASX register.
Key features:
- Shares are held under the broker’s or custodian’s name on CHESS.
- You’re the beneficial owner, recorded in the broker’s own records.
- You typically don’t get your own HIN.
- Often enables lower brokerage, fractional shares and slicker apps.
- You usually rely on the broker to pass on dividends, statements and corporate actions.
Many newer, low-cost and app-based brokers use the custodian model because it’s cheaper to run and enables features like fractional investing.
Side-by-Side Comparison
| Feature | CHESS-sponsored | Custodian model |
|---|---|---|
| Whose name on CHESS | Yours (with a HIN) | Broker’s / custodian’s |
| Legal ownership | You, on the ASX register | You, as beneficial owner (broker’s records) |
| HIN issued | Yes | No |
| Portability between brokers | Easy — transfer your HIN | Harder — often must sell or use in-specie transfer |
| Dividends & communications | Direct from the registry | Passed through by the broker |
| If the broker fails | Shares held in your name | Depends on custodian arrangements |
| Typical brokerage | Sometimes higher | Often lower |
| Fractional shares | Rare | Commonly supported |
Pros and Cons
CHESS-Sponsored
Pros: You’re the registered legal owner; your holdings are portable if you want to switch brokers; you deal directly with share registries; and there’s strong protection if your broker collapses because the shares are in your name.
Cons: Sometimes higher brokerage fees; fractional shares are rarely available; and you manage more paperwork (holding statements, registry logins).
Custodian
Pros: Often cheaper to trade; access to fractional shares and modern, streamlined apps; simpler consolidated reporting through the broker.
Cons: Your name isn’t on the ASX register; switching brokers can be harder (you may have to sell or arrange an in-specie transfer); you rely on the broker to pass through dividends and corporate actions; and the protection if the broker fails depends on how the custodian arrangement is structured.
Why It Matters
The difference isn’t just technical — it affects real outcomes:
- Portability. With CHESS sponsorship, moving to a new broker is a simple HIN transfer that keeps your holdings intact and preserves your cost base and purchase dates. Under a custodial arrangement, moving brokers can be far more awkward, sometimes forcing a sale that triggers capital gains tax.
- Ownership security. If a broker becomes insolvent, CHESS-sponsored shares sit safely on the ASX register in your name. With a custodian, your protection depends on the custodian structure and how well assets are segregated.
- Tax records. A forced sale to switch custodial brokers can crystallise a capital gain. Holding for more than 12 months at least secures the 50% CGT discount for individuals — see CGT on shares — but an unplanned sale can still be costly.
- Control and communication. CHESS-sponsored investors deal directly with registries for voting and dividends; custodial investors rely on the broker to relay them.
Which Should You Choose?
There’s no universally right answer. CHESS sponsorship suits investors who value direct ownership, portability and the security of being on the ASX register, and who are happy to pay slightly more in brokerage. The custodian model suits cost-focused or beginner investors who want low fees, fractional shares and a modern app, and who understand the trade-offs on portability and ownership.
Whichever you lean towards, factor it into your broker choice from the start — it’s one of the criteria we highlight in our guide to the best trading platforms and brokers in Australia. Switching later can be more trouble than getting it right upfront.
Common Pitfalls
- Not checking before you sign up. Many beginners don’t realise which model their broker uses until they try to move.
- Assuming custodial means unsafe. It doesn’t — but you should understand the custodian arrangement and how assets are segregated.
- Overlooking transfer costs. Leaving a custodial broker can mean selling and rebuying, triggering CGT and brokerage.
- Forgetting your HIN details. CHESS-sponsored investors should keep their HIN and registry logins secure and accessible.
This article is general information only and not financial or tax advice; consider your own circumstances and speak to a licensed adviser or the ATO before acting.
The CHESS-versus-custodian choice is one of those quiet decisions that barely registers when you’re excited to make your first trade, but can matter a great deal years later. Understand which model your broker uses, weigh portability and ownership against cost and features, and choose deliberately. From there, our guide on how to buy shares takes you through placing that first order.