What is Liquidity in Forex and Why it Matters?

The forex market is the most liquid financial market globally so far (Bank for International Settlements). 

But what does liquidity truly mean for traders like you, and why does it hold such importance?

The right use of liquidity can transform your trading strategy, so you can approach the Forex market with confidence and precision. Yes. If you understand how liquidity functions, you can make more informed choices, which minimizes risks like slippage and volatility. 

Let’s discuss our reference-backed, validated insights about what is liquidity in Forex and find out why it impacts your trading. 

What Does Liquidity Mean in Forex?

Liquidity in forex refers to “how easily you can buy or sell a currency pair without affecting its market price”. In simpler terms, it shows how active and “busy” the forex market is. 

High liquidity means there are many traders buying and selling, so trades can happen quickly and at stable prices. 

You’ll notice that major currency pairs like EUR/USD or USD/JPY are highly liquid. This high liquidity means that spreads (the difference between buying and selling prices) remain low, which keeps your trading costs down. For instance, trading EUR/USD often has a narrow spread of just a few pips, as demand is consistently high. 

On the other hand, exotic pairs like USD/TRY tend to have lower liquidity, which leads to wider spreads and greater price jumps when placing large orders.

Liquidity becomes essential when you’re managing risk, as more liquid markets help prevent sudden price shifts. This is why professional traders often stick to major pairs, where trades execute at predictable prices with minimal slippage. 

What are Liquidity Risks that Traders Should Know?

When you hear liquidity risk in forex trading, it means you have to face challenges while buying or selling a currency without affecting its price significantly. When you hear “liquidity risk” in forex, it means wrestling with the challenge of buying or selling currency without pushing the price against you. Liquidity risks can catch traders off guard, especially in unpredictable markets. 

Here’s what you need to know to stay ahead:

Difficulty in Exiting Trades

Low liquidity can make it hard to exit trades, especially during volatile periods or in exotic currency pairs. For instance, trading USD/TRY may result in fewer buyers, leaving you “stuck” in a position or forcing you to sell at a lower price than desired. 

According to research, exotic pairs often carry higher risks and are less liquid due to lower trading volumes (Report by Bank for International Settlements, 2024).

You need to focus on major pairs like EUR/USD, where high liquidity means more reliable trade execution. The major pairs maintain tight spreads and reduce the chance of slippage, which makes it easier for you to exit trades smoothly.

Unexpected Price Gaps

In low-liquidity markets, price gaps can occur, causing your position to open or close at a much different price than intended. For example, if you hold an open position in an illiquid pair like EUR/TRY, sudden economic news may create a price gap, leading to significant losses. In fact, slippage due to low liquidity impacts 20% of forex trades globally, as noted by Forex.com.

You want a way to handle this? Simply avoid trading around major news releases unless you have set appropriate stop-loss and limit orders. Also, make sure to monitor economic calendars to anticipate volatile periods and prevent losses from sudden price movements.

Higher Transaction Costs

Low liquidity leads to wider spreads, meaning you’ll pay more to enter or exit a trade. For instance, trading USD/HKD or other minor pairs typically involves higher costs than major pairs due to lower trading volumes. High spreads directly impact profitability, especially for short-term traders who rely on small price movements. 

It is worth noting that high-liquidity pairs like EUR/USD typically offer lower spreads, which keeps trading costs manageable (Soft-FX report, 2024).

You need to focus on high-liquidity pairs during peak trading hours (like the London-New York overlap) to benefit from tighter spreads. Because active trading sessions help reduce the cost of spreads and make trades more cost-effective.

How Does Liquidity Impact Trading Conditions?

Let’s consider an example to understand the impact of liquidity on trading. 

Consider that you want to trade a major currency pair like EUR/USD, which has high liquidity. You’ll be able to find buyers and sellers easily and the spread (difference between the bid and ask price) will remain tight so you can keep trading costs low. You thus enter and exit positions without impacting the market price significantly.

On the other hand, the story will differ if you trade a less liquid currency pair, such as USD/TRY (Turkish lira). In fact, only a fewered traders for this pair, which widens the spread and increases the cost. If you attempt to make a large trade, the price could shift due to low liquidity. Impact? You will lose more than anticipated.

High vs. Low Liquidity: Key Differences

Now, you need to understand one thing clearly: high liquidity leads to better trade execution. Abundant buyers and sellers in such a liquid market allow you to secure the price you want with greater reliability, which reduces the risk of slippage—where trades fill at unexpected prices. In contrast, low liquidity often causes price gaps, which makes it harder to secure your preferred price and directly impacts your trading outcomes.

Factors That Affect Forex Liquidity

• Market size matters because major currencies like USD, EUR, and JPY stay highly liquid due to their demand and global trade volume.
• Trading hours shift liquidity throughout the day since overlapping sessions like London and New York bring more trading activity.
• Economic data releases such as U.S. non-farm payrolls often create temporary spikes or dips in liquidity.
• Central bank policies, especially interest rate decisions and monetary policy shifts, directly influence currency demand and liquidity.
• Political events, including elections or trade agreements, impact liquidity by increasing or reducing demand for affected currencies.
• Global market sentiment also plays a role since a confident economic outlook often leads to higher liquidity as traders actively engage.
• Market depth, shown by the number of buy and sell orders at various price levels, reflects liquidity, where more orders indicate higher liquidity.
• The availability of liquidity providers like banks and financial institutions influences liquidity by offering consistent price levels for trading.

How to Measure Liquidity in Forex Trading?

Let us walk you through different methods which can help you to gauge the liquidity of Forex trading pairs effectively:

Method 1. Check for the Bid-Ask Spread

The bid-ask spread is the difference between the buying (ask) and selling (bid) prices. A narrow spread usually means a liquid market with many buyers and sellers.

For example, if you see EUR/USD with a bid of 1.1000 and an ask of 1.1002, the spread is 0.2 pips, which suggests high liquidity. In comparison, an exotic pair like USD/TRY might show a spread of 5 to 10 pips, indicating lower liquidity. The tighter the spread, the easier it is for you to execute trades smoothly.

Method 2. Observe Trading Volume for an Overview of Market Activity

Trading volume shows how often a currency pair is traded, which directly impacts liquidity. Higher trading volume means more market participants, making it easier for you to execute trades at your desired price.

For instance, EUR/USD is known for its high trading volume, so entering and exiting positions on this pair is typically seamless. On the other hand, if you’re trading a pair with low volume, such as NZD/SGD, you may find fewer participants, which can lead to price changes before your order fills.

Method 3. Analyze Market Depth for a Better Understanding of Order Flow

Market depth refers to the number of buy and sell orders at various price levels. Many trading platforms offer “Level II” data to show this. A market with deeper order books is more liquid and better equipped to handle large trades without price shifts.

If you’re trading USD/JPY and see multiple buy and sell orders around the current price, that’s a good sign of market depth. Fewer orders, however, suggest limited liquidity. Large orders in such markets can cause sudden price movements, affecting your trades.

Method 4. Monitor Price Stability to Identify Liquidity Levels

Price stability, or how steady a currency pair’s price remains, can reveal a lot about liquidity. Higher liquidity often results in minor, steady price movements, while lower liquidity leads to more sudden shifts.

For example, major pairs like GBP/USD usually show stable price patterns, meaning you can expect fewer dramatic swings. But if you’re trading a more volatile, less liquid pair, you’ll likely encounter sharp, unpredictable movements, which can make it harder to control trade outcomes.

Method 5. Evaluate Slippage Rates to Gauge Market Smoothness

Slippage happens when your trade executes at a different price than expected. Frequent or large slippage suggests lower liquidity, as fewer buyers and sellers are available to meet your order at your target price.

Let’s say you set a buy order for EUR/GBP at 0.8500, but it executes at 0.8505 instead. This difference shows slippage. High-liquidity pairs like EUR/USD typically experience minimal slippage, whereas exotic pairs can see significant slippage, which can impact your trading costs.

Method 6. Use Liquidity Ratios for a Quick Insight on Market Conditions

Liquidity ratios, like the current ratio or quick ratio, measure a market’s ability to handle trades without large price changes. Although common in financial analysis, they also work in Forex by offering insight into how easily you can buy or sell.

For example, if you’re trading with an institution that has a high liquidity ratio, they’re better equipped to fulfill your trades quickly and at favorable rates. Lower ratios, however, can signal a risk of delays or wider spreads, making it harder for you to get the best trading conditions.

Read Also: Forex vs Crypto – Which Offers Better Trading Opportunities

Final Words: How to Use Liquidity to Your Trading Advantage?

Let’s be clear here: you need to focus on trading major pairs like EUR/USD or GBP/USD during peak hours, especially when London and New York sessions overlap. Because tighter spreads, faster execution, and fewer surprises make your trades more predictable and cost-effective.

Now, if you are aiming for stability in volatile markets, you need to use limit orders. Yes, don’t go for market orders when liquidity drops. Limit orders will help lock in your preferred price, all while slippage risk during unpredictable moments.

But how can you use liquidity as a consistent advantage? Time your trades during high-volume sessions and stick with popular currency pairs. Each trade will be turned into a calculated move rather than a risk.