How to buy and sell shares in Australia

Buying a share means buying a small ownership interest in a company. In Australia, most listed shares trade on the Australian Securities Exchange (ASX), and retail investors generally access the market through a broker. The mechanics are straightforward, but the choices around brokers, order types, fees and how holdings are recorded are worth understanding before you press Buy.

This guide explains the process rather than recommending a particular company, share or trading platform. Prices move, investing involves risk, and a product that suits one investor may not suit another.

Before you buy shares

Start with the purpose of the investment, the time you expect to hold it and the amount of loss you could tolerate. Moneysmart notes that shares are not appropriate for everyone and encourages investors to consider their time frame and risk tolerance. That decision comes before choosing a ticker symbol.

You will also need enough cash for the investment and transaction costs. Avoid treating the amount shown on a quote screen as the complete cost: brokerage can apply to each buy and sell, and international investing can introduce foreign-exchange costs.

1. Choose a broker and account

ASX-quoted products are traded through brokers. An online or non-advisory broker executes decisions you make yourself; a full-service broker can provide additional services and, where appropriately licensed, advice. Compare what you actually need rather than choosing on one headline fee.

Useful comparison points include ASX and international-market access, brokerage rules, account or inactivity fees, foreign-exchange pricing, available order types, research tools, customer support and the structure used to hold investments.

2. Fund your account

After verification, follow the broker's funding process. Many online brokers require money in the account before you trade; some use a linked bank account and settlement arrangement. Check the provider's current instructions and cut-off times rather than assuming every broker works the same way.

Keep enough available cash for the intended purchase and applicable fees. A rejected settlement or overcommitted account can create avoidable problems.

3. Research the share

Before entering an order, confirm the company and ASX code, read recent company announcements and understand what the business does. Consider financial performance, risks, valuation, industry conditions and how the investment would fit with the rest of your portfolio. A familiar company name is not a substitute for research.

ASX provides company announcements and investor education, while Moneysmart provides independent educational material on researching shares and diversification. Trading Guide's role is to help explain the mechanics and costs, not predict which share will rise.

4. Place a buy order

A typical online order asks for the security code, whether you are buying or selling, the number or value of shares, an order type and sometimes an expiry instruction. Review the order preview carefully. It may show an estimated trade value and brokerage before you submit.

Orders sent to the market are matched with opposite orders. ASX explains that orders are generally matched by price and then by the sequence in which they entered the market. A submitted order is therefore an instruction to trade; it is not a guarantee that every share will execute immediately at the price you last saw on screen.

Market order vs limit order

Market order: seeks execution at the next available price. It prioritises getting the trade done, but the final execution price can differ from the price you saw before submitting, particularly when prices are moving or liquidity is limited.

Limit order: sets a price boundary. For a buy, the limit is the maximum you are prepared to pay. For a sell, it is the minimum you are prepared to accept. The trade may execute at a better price, but it may remain unfilled if the market never reaches your limit.

5. What happens after you buy

When a buy order matches, you receive a trade confirmation showing information such as the security, quantity, execution price and fees. Keep it. Execution and settlement are separate stages.

ASX states that cash-equity trades generally settle two business days after the trade date (T+2). CHESS performs settlement using delivery versus payment, exchanging cash and securities. CHESS also operates an electronic sub-register used for broker-sponsored holdings.

The way your investment is held matters. A CHESS-sponsored holding and a custodial or omnibus structure are not the same arrangement. Learn the distinction rather than assuming every Australian trading app gives you the same ownership structure.

6. How to sell shares

Selling through an online broker follows the same basic pattern: select the holding, choose the quantity, choose an available order type, review the order and submit it. A market sell seeks the next available price; a limit sell sets the minimum price you are prepared to accept.

After execution, check the confirmation and settlement details. Moneysmart states that proceeds are generally sent to the brokerage account two business days after the trade day. Your broker's process determines where the settled cash appears.

Costs to check before trading

Brokerage is the fee charged for executing a trade. Pricing can be flat, percentage-based, tiered or conditional. A low headline rate may only apply below a trade-value threshold or under particular account conditions.

Platform or account fees can include subscription, inactivity or service charges. Foreign-exchange fees may apply when buying overseas shares in another currency. Other costs can also apply depending on the product and provider.

Calculator results are estimates. Provider fees and conditions change, so verify current pricing on the provider's official website before acting.

Records and tax

Keep contract notes or trade confirmations and records showing when you acquired and disposed of shares, the amounts paid or received and brokerage or commissions. The ATO identifies these as important records for share investments and capital-gains calculations.

Dividends are generally treated differently from capital gains, and the tax treatment can depend on your circumstances and whether your activity is investing or carrying on a share-trading business. Trading Guide does not provide tax advice; use current ATO guidance or an appropriately qualified tax professional where needed.

Common beginner mistakes

• Choosing a platform only because one advertised fee is low.
• Confusing a market quote with a guaranteed execution price.
• Using a market order without understanding how quickly prices can move.
• Ignoring the difference between CHESS sponsorship and custody.
• Making very small trades without considering brokerage as a percentage of the investment.
• Buying a company without reading current announcements or understanding its risks.
• Failing to keep trade confirmations and cost records.
• Assuming an educational comparison or calculator is personalised financial advice.