Best share trading platforms for beginners in Australia

Picking a share trading platform in Australia comes down to three questions: what each trade costs, which markets you can reach, and how your shares are recorded. The first two are easy to compare. The third is the one beginners skip, and it is the one that matters if a broker ever fails.

Every share on the ASX is recorded on the CHESS subregister against a Holder Identification Number, or HIN. Moneysmart, the government's consumer site run by ASIC, explains that a HIN is issued when you become a client of a broker and starts with an X followed by ten digits. It also warns that some brokers use a shared omnibus HIN to keep brokerage low, and that investors in that arrangement are not the legal owners of their shares and may be unable to claim against the National Guarantee Fund.

So a beginner is really choosing among three models:

• CHESS sponsored, own HIN. Your ASX shares are registered in your name. CommSec applies CHESS sponsorship automatically to every newly opened Share Trading Account, and Stake registers all ASX shares under your own HIN.
• Custodial or nominee. A custodian holds the shares on your behalf, separately from the broker's own assets. Interactive Brokers Australia works this way for ASX shares.
• US shares through a partner. Australian apps that sell US shares usually hold them with a US broker-dealer. Stake uses DriveWealth.

Moneysmart also notes that most online brokers charge a flat fee on small trades, often around $20 or less, and switch to a percentage of the trade for larger amounts. All three platforms here sit well under that $20 for a small ASX order.

The table shows the costs a beginner meets first: an ASX trade, a US trade, and the charge when Australian dollars become US dollars.

CommSec's online rates carry a condition: you must trade online, be CHESS sponsored with CommSec, and settle through a Commonwealth Direct Investment Account (CDIA) or a CommSec Margin Loan. CommSec lists an account keeping fee of A$0, and free electronic contract notes (A$1.95 each by post).

Stake's pricing page lists A$3 per ASX trade and US$3 per Wall St trade, each moving to 0.01% on orders above $30,000. US fractional shares start from US$10, which lets a beginner own part of a high-priced US share rather than a whole one.

The cost to notice is currency. Money moved into Stake's Wall St account carries a 55 basis point (0.55%) FX fee, so converting A$1,000 costs A$5.50 before any brokerage. On larger or frequent top-ups that conversion fee can exceed the US$3 brokerage itself.

On safety, Stake registers ASX shares under your own HIN. Its US shares are held by DriveWealth, LLC, with you as beneficial owner, and Stake's security page says SIPC protects US securities up to US$500,000, plus up to US$250,000 for cash claims, if the brokerage fails. Neither covers a fall in prices.

CommSec is Commonwealth Securities Limited, owned by the Commonwealth Bank, and it is the platform many Australians already have through their bank login. Its online ASX brokerage is tiered by trade size: A$5 up to A$1,000, A$10 up to A$3,000, A$19.95 up to A$10,000, A$29.95 up to A$25,000, then 0.12%.

Two rules shape how a beginner starts. CommSec says the first purchase of any shareholding must be at least A$500, its minimum marketable parcel, though smaller top-ups are allowed afterwards. For smaller amounts, CommSec Pocket lets you start from A$50 with brokerage of A$2 up to A$1,000 and 0.20% above that.

US shares go through the International Shares account at US$5 or 0.12% a trade, whichever is greater, plus 0.55% each time money is converted. CommSec lists the International Shares Plus account at US$9.95 or 0.20%.

Interactive Brokers lists two plans for ASX shares. The fixed plan charges 0.08% of trade value with an A$6 minimum per order, and its own example puts 400 shares at A$50 at A$16 before GST (A$17.60 with GST). The tiered plan also starts at 0.08% but with an A$5 minimum, and exchange and clearing fees are added on top. US shares on the fixed plan cost US$0.005 a share with a US$1 minimum.

The account is broad: Interactive Brokers Australia is a participant of ASX, ASX 24 and Cboe Australia, and the wider group reaches far more markets and order types than the other two. The trade-off is the holding model. Its client protection page says it has appointed BNP Paribas as sub-custodian for ASX and Cboe Australia shares, recorded on a HIN sponsored by BNP, and that this may affect access to the National Guarantee Fund.

For more on the platform itself, see our Interactive Brokers review.

On price, the comparison turns on trade size. Take a beginner buying A$2,000 of one ASX-listed ETF every month:

• Stake. A$3 a trade x 12 = A$36 a year.
• Interactive Brokers, fixed. 0.08% of A$2,000 is A$1.60, below the A$6 minimum, so A$6 a trade x 12 = A$72 a year.
• CommSec. A$2,000 falls in the over-A$1,000-to-A$3,000 tier, so A$10 a trade x 12 = A$120 a year.
• CommSec Pocket. Trades above A$1,000 are charged 0.20%, so A$4 a trade x 12 = A$48 a year.

The gap narrows as trades grow. On a single A$20,000 ASX order, Stake still charges A$3, CommSec charges A$29.95, and Interactive Brokers fixed charges 0.08%, or A$16.

For US shares the arithmetic adds currency. Converting A$1,500 costs about A$8.25 at 0.55% at either Stake or CommSec, before any brokerage. A US$1,000 trade then costs US$3 at Stake and US$5 at CommSec (0.12% would be US$1.20, so the US$5 floor applies). At Interactive Brokers on the fixed plan, buying 5 shares at US$200 comes to US$0.025 in per-share commission, so the US$1 minimum applies.

The same three names, compared on what happens to your shares rather than what a trade costs.

• Stake. ASX shares on your own HIN. US shares held by DriveWealth, with SIPC cover up to US$500,000 for securities if the US brokerage fails.
• CommSec. ASX shares on your own HIN through CHESS sponsorship, applied automatically to new accounts. CommSec describes itself as a wholly owned but non-guaranteed subsidiary of the Commonwealth Bank, so the bank does not guarantee it.
• Interactive Brokers. ASX shares held at BNP Paribas in a client sub-custody account, separate from Interactive Brokers' own assets, on a HIN sponsored by BNP. Its page sets out pros and cons of each model and says the choice is the client's.

A common pattern is to start on the simpler app and move later. Shares on a HIN can usually be transferred to another CHESS-sponsoring broker without selling them, which avoids creating a capital gain just to switch. Check the receiving broker's transfer process first, since custodial holdings follow a different route.

The fee tables point in a fairly consistent direction once you know how you plan to invest. These are patterns, not a recommendation for any one person.

A few hundred dollars into one ETF each month

Flat fees bite hardest here. An A$300 monthly buy costs A$3 at Stake, 1% of the money, or A$2 through CommSec Pocket. At CommSec's main account it costs A$5, and a brand-new holding first needs A$500. Interactive Brokers' A$6 minimum is 2% of A$300.

Larger, less frequent ASX purchases

Percentage pricing starts to look better. Stake stays at A$3 up to A$30,000. Interactive Brokers' 0.08% overtakes CommSec's flat tiers at most sizes, and CommSec's 0.12% applies above A$25,000.

US shares, bought often

Currency matters as much as brokerage. Stake and CommSec both charge 0.55% per conversion. Holding US dollars in the account and converting less often keeps that charge down. An ASX-listed ETF that holds US companies avoids conversion at the point of purchase.

Someone who wants it next to their bank

CommSec settles through a Commonwealth Direct Investment Account, which suits people who already bank with CommBank. For some beginners that convenience outweighs a few dollars of brokerage.

Someone who expects to outgrow a simple app

Interactive Brokers reaches far more markets and order types. For a beginner, most of that breadth goes unused at first, and the custodial holding model is the trade-off to weigh against it.

Moneysmart says opening an online broker account usually takes less than 15 minutes, although identity checks can sometimes take a day or two. You will be asked for identification and a bank account, and most online brokers need money in the account before you can place a trade. Some let you settle a trade from a linked bank account within two business days instead, so it is worth checking which way your broker works before your first order.

The application also asks for your tax file number. Quoting it is optional, but the ATO says that if you choose not to quote a TFN and have not claimed an exemption, an amount is withheld from your investment income at the top rate of tax plus the Medicare levy once that income passes the relevant threshold. The company or fund paying the dividend cannot refund that amount. You claim it back as a credit on your tax return at the end of the financial year, which leaves the money out of your hands in the meantime.

Once the account is open, a buy goes through as a market order (the next available price) or a limit order (a price you set). When you sell, Moneysmart notes that the money reaches your brokerage account two business days after the trade, which it calls the T+2 settlement period. A beginner planning around a bill or a deadline should count those two days in.

Many first-time investors in Australia start with an exchange traded fund rather than one company. Moneysmart's ETF guide explains that most Australian ETFs are passive: they aim to track an index such as the S&P/ASX 200 rather than have a manager pick investments, so one trade buys a slice of many companies. Many charge low management fees, and they trade during market hours through the same broker account as ordinary shares.

The same guide lists the trade-offs. An ETF still rises and falls with the market it tracks. A synthetic ETF, which copies an index with derivatives rather than owning the assets, carries the added risk that the other side of the derivative fails, and some ETFs are labelled complex because they borrow, short sell or use derivatives. Moneysmart also notes that ETFs may not suit someone who wants full control over every investment choice or who needs the money back at short notice.

For platform choice, the ETF-or-shares question mostly changes how often you trade. A single monthly ETF buy makes the flat fee per trade the number to compare. Building a portfolio of eight or ten individual companies means eight or ten first purchases, which at CommSec each need the A$500 minimum parcel and at every broker each pay their own brokerage.

Selling shares creates a capital gain or loss in the year you sell. The ATO lets Australian resident individuals reduce a capital gain by 50% if they owned the asset for at least 12 months, which is why many beginners keep long-term holdings past the one-year mark. Capital losses come off gains before the discount is applied.

That rule is changing. Treasury's 2026-27 Budget page says the 50% discount will be replaced with a discount based on inflation, plus a minimum 30% tax rate on capital gains, for gains that accrue from July 2027 and are realised after that point. Your broker's annual tax statement records buys and sells, but the calculation is yours or your accountant's.

Australian shares often pay dividends with franking credits attached. The ATO calls this the imputation system: a company that has already paid tax on its profits passes that tax to you as a credit on the dividend. You declare the dividend and the credit in your tax return, the credit reduces the tax you owe, and if your franking credits are more than your basic tax liability the ATO can refund the difference. People who are not required to lodge a tax return can apply for that refund on its own.

There is a holding rule to know about. If your total franking credit entitlement for the year is A$5,000 or more, the ATO requires you to have held the shares "at risk" for at least 45 days (90 days for preference shares), not counting the day you bought or sold. Below A$5,000, only the related payments rule applies. Most beginners are well under that line, but it explains why buying a stock the day before a dividend and selling it straight after does not work the way some people expect.

US shares are different. They do not carry franking credits, and the US withholds tax on their dividends before the money arrives.

The form that sets the US withholding rate is the W-8BEN. Stake's US withholding tax page says the US withholds 15% from dividends for non-US residents with a completed W-8BEN and 30% if no form has been submitted, and that no US tax is withheld when you sell shares. Stake arranges the form through its US broker partner when you first fund the Wall St account.

Two details are easy to miss. Stake's W-8BEN page says the form stays valid for three years, after which you may be asked to certify your status again. The same page notes that for US-domiciled ETFs or shares listed on the ASX, Stake does not lodge a W-8BEN for you, so that paperwork goes through the fund's share registry instead. Other platforms build the form into their own account process, so check where it sits on whichever one you choose.

Your broker's annual statement is a start, not the whole record. The ATO lists what to keep for shares, including purchase and sale contracts and the brokerage paid on each, and says to keep records for 5 years after the year the CGT event happens. Its own example: shares sold in September 2025 fall in the 2025-26 financial year, so the purchase and sale records need to be kept until 30 June 2031.

For someone who buys every month, that means keeping every contract note, not only the ones for sales. The cost base of a holding built over years comes from all of them, and dividend statements are the evidence for the franking credits claimed each year. Many people export statements from the broker once a year so the records do not depend on the account still being open.

The holding model decides how easy a switch is. The ASX fact sheet on CHESS and issuer sponsored holdings explains that on the CHESS subregister you have one HIN for each sponsoring broker, covering every company you own, while issuer sponsored holdings have a separate Securityholder Reference Number for each company. A CHESS holding can move to a new sponsoring broker as a broker-to-broker transfer rather than a sale.

The same fact sheet notes that shares held on the issuer sponsored subregister have to be converted to CHESS before a broker can settle a sale, and a broker that misses the settlement deadline may pass on a fee. Keeping shares on a HIN at a CHESS-sponsoring broker such as CommSec or Stake keeps that route simple. Shares held through a custodian, as with Interactive Brokers, move through that broker's own transfer process instead.

Walnut is an AI investing app. It does not hold your money; it connects to the broker where your account already sits. The steps for an Australian investor:

1. Connect the account

Link your broker from the brokerage page. You sign in at the broker, and Walnut never sees the password. CommSec and Interactive Brokers connect for reading: Walnut sees every holding, shows each one against the S&P 500, and gives a keep, trim or exit read. Stake also takes the buys you approve inside Walnut.

2. Ask the assistant about what you hold

The assistant reads your actual portfolio, so a question such as how much of the account sits in banks and miners gets an answer about your holdings rather than a general one. Holdings arrive without cost basis, so returns are shown as price returns rather than profit and loss.

3. Build a basket

A basket is a set of holdings with target weights and a written thesis. Walnut tracks it against the S&P 500, shows how far each holding sits from its target, and drafts the trades that would bring it back.

4. Approve any trade yourself

Walnut places the orders you approve at Public and Robinhood (where Robinhood buys go into a Robinhood Agentic account), and at E*Trade, tastytrade, Webull (US and Canada), moomoo, Questrade, Wealthsimple, Trading 212 and Stake (Australia). Every other connected broker, including CommSec and Interactive Brokers, is read in full. Nothing is bought without your approval. Broker-by-broker detail is on our Stake, CommSec and Interactive Brokers pages.

• Comparing brokerage only. A US$3 trade with 0.55% FX on top can cost more than the trade fee suggests if you convert small amounts often.
• Ignoring the holding model. A HIN in your name and a custodial or omnibus arrangement carry different protections. Moneysmart suggests reading the terms of an omnibus arrangement to see how your shares are recorded.
• Splitting a small amount into many first buys. At CommSec, each new holding needs A$500 up front, and every flat fee is a bigger share of a small trade.
• Selling just before 12 months. A gain realised a few days early loses the 50% discount under the current ATO rule.
• Selling to switch brokers. Transferring a HIN holding keeps the shares and the original purchase date; selling and rebuying creates a taxable event.

Stake: pricing and security of your shares and funds. CommSec: rates and fees, minimum purchase, CHESS sponsorship and company details. Interactive Brokers: Asia-Pacific stock commissions, US stock commissions and client protection. Moneysmart: holder identification number and how to buy and sell shares. ATO: CGT discount, keeping CGT records, refund of franking credits and TFN information for investments. ASX: CHESS and issuer sponsored holdings. Moneysmart: exchange traded funds. Stake: US withholding tax and W-8BEN form. Treasury: Budget 2026-27 tax system changes. Public: eligibility. Robinhood: what you need to get started. Walnut is not a registered investment adviser, and this guide is educational rather than personalised advice.