What Is a HIN (Holder Identification Number)? A Plain-English Guide for Australian Investors

When you buy ASX shares through a broker, your HIN links those shares directly to you on the official record. This guide explains what a HIN is, what it looks like, how to find yours, how it differs from an SRN, and why it matters for owning your investments — in plain English.

What is a HIN?

A Holder Identification Number (HIN) is a unique number issued through the ASX's CHESS system when you become a client of a broker. CHESS stands for the Clearing House Electronic Subregister System — the ASX's electronic subregister of who owns what. Every CHESS-sponsored ASX share you buy through that broker is recorded against your HIN, so the register shows you as the holder.

Think of your HIN as the thread that ties your Australian shares to your name on the the CHESS subregister record. It applies to ASX-listed securities specifically — different arrangements apply to US and other international shares, which we cover further down.

What does a HIN look like?

A HIN starts with the letter "X" followed by ten numbers — for example, X0001234567. Some platforms, including Selfwealth, may not display the leading "X" on screen, but it's still part of the number.

Your HIN is not the same as your trading account number or your login details. It's a separate identifier used specifically for share ownership on the CHESS subregister.

How to find your HIN

You can usually find your HIN in two places:

• On a CHESS holding statement — issued after you trade, and sent to you by email or post depending on your settings.

• Inside your trading platform — most brokers show your HIN in your account or portfolio settings.

If you trade with Selfwealth, you can look up your HIN in the app — here's how to find your HIN in your Selfwealth account.

HIN vs SRN — what's the difference?

Both a HIN and an SRN identify you as a shareholder, but they sit on different registers:

• HIN (broker-sponsored / CHESS-sponsored): you get this when you buy shares through a broker. Your shares sit on the ASX's CHESS subregister under your own HIN.

• SRN (Securityholder Reference Number, issuer-sponsored): you get this when shares are issued to you directly by a company — for example, through an employee share scheme, an IPO, or a demutualisation. These shares are managed by the company's share registry (such as Computershare or MUFG Corporate Markets).

If you hold issuer-sponsored (SRN) shares and want to sell or manage them through a broker, they generally need to be transferred onto your HIN first.

HIN vs custodial ownership — and why it matters

Not every platform gives you your own HIN. Some use a custodial or omnibus model, where client shares are pooled under the broker's own HIN. Under that model, you hold a beneficial interest in the shares rather than direct legal ownership.

Neither model is inherently right or wrong, but the difference matters — particularly if a broker ever runs into financial trouble. With your own HIN, you're recorded as the direct legal owner on the CHESS subregister. ASIC's Moneysmart notes that investors whose shares are held under an omnibus arrangement are not the legal owner. Depending on the custody arrangement and the circumstances, investor protections and eligibility for compensation schemes such as the National Guarantee Fund may differ.It's worth reading the terms of any arrangement so you understand how your shares are recorded and how corporate actions like voting are handled.

Custodial arrangements are common for international investing and are also used by some Australian trading platforms. They can simplify administration and support features that may not be available under a CHESS-sponsored model, although ownership is structured differently.

At Selfwealth, every ASX trade is CHESS-sponsored, so your Australian shares sit on your own HIN and you hold them directly, with no custodian in between. Note that CHESS applies to ASX-listed securities only — US and other international shares are held under separate settlement and custody arrangements through the relevant international trading partner, which is standard practice across Australian brokers.

Can you have more than one HIN?

Yes. A HIN is tied to an account, so you can hold several:

• A different HIN with each broker you use.

• A different HIN for each account type — for example, your individual account and a joint account will each have their own HIN.

Each account has one HIN, but if you'd rather keep everything in one place, you can consolidate holdings by transferring shares onto a single HIN.

Transferring your HIN or shares between brokers

If you switch brokers, you generally have two options: move individual holdings via a broker-to-broker transfer, or, in some cases, move an entire HIN across. If you hold issuer-sponsored (SRN) shares, you can convert them onto your HIN so they can be traded through your broker.

Transferring shares between your own accounts — where you remain the beneficial owner — usually isn't a capital gains tax event, but tax depends on your individual circumstances. For anything tax-related, speak with a registered tax agent or see ASIC's Moneysmart rather than relying on general information.

Keep your HIN private

Treat your HIN like a bank account number. Because it can be used to identify you and access your holdings, keep it confidential — and only share it when you're completing a legitimate transfer through a broker or share registry you trust.

How HINs work at Selfwealth

When you open a Selfwealth account and trade on the ASX, your shares are CHESS-sponsored under your own HIN — so you are the registered holder, not a beneficial interest through a custodian. You'll also get flat $9.50 brokerage per trade with no account-keeping fees, and access to both ASX and US markets from one account.

New to buying shares? Our beginner's guide to buying shares in Australia walks you through the whole process.

Open a Selfwealth account and recieve your own HIN with CHESS-sponsored ASX trading.

Frequently asked questions

What does a HIN look like? 

A HIN starts with the letter "X" followed by ten digits, for example X0001234567. It's separate from your trading account number and login details.

Where do I find my HIN? 

On a CHESS holding statement, or inside your trading platform's account or portfolio settings. Selfwealth customers can find their HIN in the app.

What's the difference between a HIN and an SRN? 

A HIN identifies broker-sponsored (CHESS-sponsored) shares held on the ASX subregister under your name. An SRN identifies issuer-sponsored shares held on a company's share registry. To trade issuer-sponsored shares through a broker, they usually need to be transferred onto your HIN first.

Can I have more than one HIN? 

Yes. You'll typically have a separate HIN for each broker and for each account type, such as an individual account and a joint account. Each account has one HIN.

Is my HIN the same as my account number? 

No. Your HIN is a separate identifier used specifically for share ownership on the CHESS subregister, not your trading account number or login.

Is it safe to give out my HIN? 

Keep your HIN private, like a bank account number. Only share it when completing a legitimate transfer through a broker or share registry you trust, as it can be used to identify you and access your holdings.