Bid and Ask Explained: A Practical Guide for Australian Investors (2026)

If you’ve ever placed a trade on the ASX, bought an ETF, or dabbled in crypto, you’ve likely come across the terms **bid** and **ask**. While they might sound like market jargon, these two numbers are at the heart of every transaction. Knowing how they work can help you trade more confidently and avoid unnecessary costs in 2026 and beyond.

This guide explains what bid and ask prices are, why the spread between them matters, and how you can use this knowledge to your advantage—whether you’re a beginner or a seasoned investor.

What Are Bid and Ask Prices?

Every time you buy or sell an asset—be it shares, ETFs, or digital currencies—there are buyers and sellers setting prices. The **bid price** is the highest amount a buyer is willing to pay for an asset. The **ask price** (sometimes called the offer) is the lowest amount a seller is willing to accept. The difference between these two prices is known as the **spread**.

- **Bid:** The price buyers are offering - **Ask:** The price sellers want - **Spread:** The gap between the two

For example, if you’re looking at a share with a bid of $10.00 and an ask of $10.05, the spread is 5 cents. This spread is a key indicator of how easy and cost-effective it is to trade that asset.

Why Does the Spread Matter?

The spread isn’t just a technical detail—it’s a real cost that affects every investor. Here’s why it’s important:

- **Transaction Costs:** When you buy at the ask and sell at the bid, you effectively pay the spread as a cost, in addition to any brokerage fees. - **Liquidity:** A tight (small) spread usually means the asset is liquid, making it easier to buy or sell quickly at a fair price. A wide spread can make trading more expensive and may mean you have to wait longer to complete your trade. - **Market Conditions:** During periods of high volatility or low trading activity, spreads can widen, increasing your trading costs and risk.

In recent years, Australian exchanges have introduced changes to help tighten spreads, especially for smaller companies. However, spreads can still vary widely between different types of assets and market conditions.

Examples of Bid and Ask in Action

Let’s look at how bid and ask prices play out in real-world scenarios:

Blue-Chip Shares

Large, frequently traded companies on the ASX—often called blue-chips—tend to have very tight spreads. For example, a major bank or healthcare company might have a spread of just a cent or two, even if the share price is much higher. This is because there are many buyers and sellers, keeping the market liquid.

Small-Cap Shares

Shares in smaller companies, or those that don’t trade as often, can have much wider spreads. For example, a small mining company might have a bid at 10.5 cents and an ask at 12 cents. This larger gap means you could pay a significant percentage more if you buy at the ask and sell at the bid.

ETFs

Popular ETFs, especially those tracking major indices, usually have tight spreads due to high trading volumes. However, more specialised or less-traded ETFs can have wider spreads, so it’s important to check before trading.

Cryptocurrencies

On Australian crypto exchanges, major coins like Bitcoin often have relatively tight spreads, but less popular coins can have much wider gaps. Spreads can also change quickly during periods of high volatility or outside regular trading hours.

How to Check Bid and Ask Prices

Most trading platforms and brokerage apps display the current bid and ask prices for each asset. You can usually find this information in the order screen or by viewing the market depth or order book. This shows you not only the best bid and ask, but also how many buyers and sellers are lined up at different prices.

Strategies for Managing the Spread

Understanding bid and ask prices can help you make smarter trading decisions. Here are some practical tips:

Use Limit Orders

Instead of accepting the current ask price (or selling at the bid), you can set a **limit order** at your preferred price. This means your trade will only go through if the market reaches your chosen price, helping you avoid paying more than you want or selling for less than you expect.

Trade During Active Hours

Spreads are usually tightest during the main trading session (typically 10am–4pm AEST for the ASX). Trading outside these hours or during quiet periods can mean wider spreads and higher costs.

Check Market Depth

A deep order book with lots of buyers and sellers at different prices usually means tighter spreads and less risk of price slippage. If you see only a few orders, be cautious—your trade could move the price more than you expect.

Be Patient with Illiquid Assets

If you’re trading a less liquid share or ETF, consider placing your order at your preferred price and waiting for the market to come to you, rather than chasing the current ask or bid.

What Influences the Spread?

Several factors can affect the size of the bid-ask spread:

- **Trading Volume:** More buyers and sellers generally mean tighter spreads. - **Asset Popularity:** Widely followed shares and ETFs tend to have smaller spreads. - **Market Volatility:** Spreads can widen during periods of uncertainty or rapid price changes. - **Time of Day:** Spreads are often wider at the market open and close, or outside regular trading hours.

Key Takeaways for 2026

- **Always check the spread before trading.** It’s a hidden cost that can add up over time. - **Use limit orders to control your entry and exit prices.** - **Trade during active market hours for the best spreads.** - **Be extra cautious with less liquid assets, where spreads can be much wider.**

Understanding bid and ask prices—and the spread between them—can help you make more informed decisions, reduce your trading costs, and avoid surprises. Whether you’re investing in shares, ETFs, or crypto, mastering these basics is a valuable skill for any Australian investor in 2026.

FAQ

**What is the bid-ask spread?** The bid-ask spread is the difference between the highest price a buyer is willing to pay (bid) and the lowest price a seller is willing to accept (ask) for an asset.

**Why do some shares have wider spreads than others?** Shares with lower trading volumes or less interest from investors often have wider spreads, making them more expensive to trade.

**How can I avoid paying a large spread?** Use limit orders and trade during active market hours to help minimise the impact of the spread on your trades.

**Does the spread affect long-term investors?** While the spread is more noticeable for frequent traders, it can still affect long-term investors, especially when buying or selling less liquid assets.