# Spread Costs > The spread is often your biggest trading cost. Learn to calculate spread cost per trade and per year, compare markets and cut what you pay in spreads. Source: https://learn.tradelabsai.com/orders/spread-costs/ Track: Orders and Execution · Level: Intermediate · Updated: 2026-10-03 Publisher: TradeLabs AI (https://tradelabsai.com). Education, not financial advice. Cite as: TradeLabs Learn, "Spread Costs", https://learn.tradelabsai.com/orders/spread-costs/ The bid ask spread is a cost on almost every trade, but because it never shows up as a separate line on your statement, it is easy to underestimate. For anyone who trades often, spread costs can exceed commissions many times over. This lesson shows how to calculate them, how they scale with trading frequency and how to reduce them. ## Spread cost per trade When you buy at the ask and later sell at the bid, the full spread is a cost of the round trip, even if the midpoint price never moves. ``` Round trip spread cost = Spread × Quantity Spread cost % = Spread ÷ Midpoint × 100 ``` If you trade one side with a market order and the other with a limit order that fills at your price, you pay roughly half the spread. ## How spread costs add up **Example: A year of spread costs** A day trader makes 4 round trips a day, 250 days a year, each with a $20,000 position. **Liquid large cap stock, spread 0.02%:** $4 per round trip, $4,000 a year. **Mid cap stock, spread 0.10%:** $20 per round trip, $20,000 a year. **Small cap stock, spread 0.50%:** $100 per round trip, $100,000 a year. On a $50,000 account, the mid cap trader must earn 40% a year just to cover spreads. ## Typical spreads by market | Market | Typical spread in normal conditions | |---|---| | Large US stocks and major ETFs | One cent, often well under 0.05% | | Small and micro cap stocks | Several cents to several percent | | EUR/USD and other major forex pairs | A fraction of a pip to about one pip | | Exotic forex pairs | Many pips | | E-mini index futures | One tick | | Bitcoin on large exchanges | Tiny fraction of a percent | | Small crypto tokens | Up to several percent | | Stock options | Often 1% to 10% of the option price | | Prediction market shares | Often 1 to 3 cents on a $1 payout in active markets; wider in thin ones | These are rough guides; spreads widen around news, at the open and close and in volatile conditions. ## Why short term traders feel spreads most The shorter your holding period, the smaller your average profit per trade, and the larger the spread is as a share of it. A swing trader targeting 5% per trade barely notices a 0.05% spread. A scalper targeting 0.15% loses a third of every win to it. See [Scalping](https://learn.tradelabsai.com/strategies/scalping/). ## Reducing spread costs 1. **Trade the most liquid instruments** that fit your strategy. See [Liquidity](https://learn.tradelabsai.com/markets/liquidity/). 2. **Use limit orders** to buy at the bid or sell at the ask, capturing part or all of the spread. See [Limit Orders](https://learn.tradelabsai.com/orders/limit-orders/). 3. **Avoid the widest times:** the open, the close, overnight sessions, holidays and the seconds around news. 4. **Hold longer** so the spread is a smaller share of each trade's move. 5. **For options, trade near the midpoint** and favour strikes and expiries with tight spreads and high open interest. 6. **In forex and CFDs, compare account types:** raw spread plus commission accounts can be cheaper than spread only accounts for active traders. ## Measuring your own spread costs Record the quote when you trade and compute half spreads paid on market orders and spreads saved on limit orders. Over a month, compare total spread cost with commissions and with your profits. Many traders find spreads are their largest cost. See [Slippage Analysis](https://learn.tradelabsai.com/orders/slippage-analysis/). ## Frequently asked questions ### Is the spread a fee? It is not a fee charged on your statement, but it is a real cost you pay to whoever is on the other side, usually a market maker. ### How do I calculate spread cost? Multiply the spread by the number of units traded for a round trip, or divide the spread by the midpoint price to express it as a percentage. ### Why are spreads wider on options? Options are less liquid than their underlying stocks, and market makers face more complex risks, so they quote wider spreads. ## Continue learning - Next lesson: [All-In Trading Cost](https://learn.tradelabsai.com/orders/all-in-trading-cost/) - Previous lesson: [Roll Costs](https://learn.tradelabsai.com/orders/roll-costs/) - Related: [Roll Costs](https://learn.tradelabsai.com/orders/roll-costs/): Rolling futures from one month to the next can cost or earn money. Learn how roll costs arise in contango and backwardation and how they affect futures ETFs. - Related: [Bid-Ask Spread](https://learn.tradelabsai.com/markets/bid-ask-spread/): The bid-ask spread is the gap between the best price to buy and the best price to sell. Learn how to read it, what it costs you and how to pay less of it. - Related: [Transaction Costs](https://learn.tradelabsai.com/orders/transaction-costs/): Transaction costs include commissions, spreads, slippage, market impact and missed trades. Learn each part, how to estimate it and why it decides profits. - Related: [All-In Trading Cost](https://learn.tradelabsai.com/orders/all-in-trading-cost/): Your all-in trading cost combines commissions, fees, spreads, slippage, financing and fixed costs. Learn to calculate cost per trade, per unit of risk and per year. - Related: [Limit Orders](https://learn.tradelabsai.com/orders/limit-orders/): A limit order trades only at your price or better. Learn how buy and sell limits work, why they may not fill, queue priority and how to set a smart limit price. - Related: [Liquidity](https://learn.tradelabsai.com/markets/liquidity/): Liquidity is how easily you can trade without moving the price. Learn the signs of a liquid market, how illiquidity costs you and when liquidity disappears. - Related: [Scalping](https://learn.tradelabsai.com/strategies/scalping/): Scalping aims to profit from very small price moves with many quick trades. Learn how scalpers work, why costs dominate and what it takes to succeed.