Spread in trading: the difference between the buy and sell prices

Spread or the spread is a fundamental concept that every trader must understand deeply because it directly affects your profit and loss in each transaction. Those who clearly understand the mechanics of the spread will have an advantage in designing trading strategies and calculating trading costs more accurately.

What is Spread? Why is it Important?

At the core of trading, the spread is simply the difference between two prices: the selling price (Bid) offered by the seller and the buying price (Ask) paid by the buyer. This small difference is the cost that the broker earns for facilitating the trade.

In the forex market, the spread refers to the difference in price between currency pairs, such as EUR/USD. The same concept applies to stock and digital asset markets — it is the gap between the bid and ask prices.

Imagine a real-world scenario: you want to buy gold at $500 per unit and then sell it for a profit. You need to sell it at least above $500 . That difference $501 is the spread of gold trading — it is income for the intermediary.

Measuring Spread and Market Liquidity

The size of the spread is not always constant. Securities firms and markets generally use the spread as an indicator of market liquidity. A highly liquid market $1 has enough buyers and sellers( usually has a narrow spread, around 0.001%.

However, when liquidity decreases, the spread widens noticeably. If you find a market with a spread of 1% or 2%, it indicates that the market is less liquid, with fewer participants, and trading risks are higher.

Fixed Spread )Fixed Spread( vs. Variable Spread )Variable Spread(

Traders can choose between two completely different spread systems:

) Fixed Spread ###

A fixed spread is predetermined by the broker and does not change with market conditions. The advantage of this method is that you can predict costs with certainty—you know exactly how much you will pay each time, which is convenient for financial planning.

However, the downside is frequent Requotes. During volatile forex market conditions, brokers may adjust their offered prices to match market conditions, and the system will temporarily halt your trading, requiring you to accept the new price before proceeding. This can cause your plans to fail easily because the adjusted prices are often worse than the original.

( Variable Spread )

Variable spreads fluctuate continuously with market conditions. Brokers do not control the spread value but pass the market prices to you without interference. The difference between bid and ask prices moves up and down according to supply and demand mechanisms.

The benefit is that experienced and quick-reacting traders can take advantage of lower costs, especially during highly liquid periods. Additionally, you will not face Requote issues because spread changes are natural market phenomena, not broker-controlled.

The downside is that spreads can spike suddenly, especially during major news events like NFP ###Non-Farm Payrolls( or periods of low liquidity. For example, you plan to buy EUR/USD with a 2 pip spread, but suddenly, after the employment report is released, the spread jumps to 20 pips in an instant. This situation is not suitable for short-term traders or beginners.

Which to Choose: Fixed Spread or Variable Spread?

There is no universal answer to this question, as it depends on your trading style and personal preferences.

Retail traders who prefer small trades often benefit more from fixed spreads because the certainty of costs provides peace of mind for planning. On the other hand, large traders who trade frequently or during choppy market conditions may find variable spreads more advantageous.

If you want to avoid Requotes and prefer fast trading, choose a variable spread. Conversely, if you enjoy detailed planning and want to reduce uncertainty, a fixed spread might be the better option.

Tips to Reduce Spread Costs

One rule to always remember: the more frequently and significantly spreads fluctuate, the harder it becomes to profit.

Choose a broker with stable, non-volatile spreads. Also, trade major currency pairs like EUR/USD and GBP/USD, as these tend to have narrower spreads and higher liquidity compared to less popular pairs.

Spread may seem like a small detail in trading, but once you understand it thoroughly and use it appropriately, it can help you plan more effective strategies and increase profitability. Forex trading and other assets are not gambling but financial transactions that require knowledge and calculations. Those with deep understanding have a higher chance of success.