The bid is what the market will pay you to sell; the ask is what the market will charge you to buy.
Every forex quote has two prices. The bid is the higher-is-better price buyers are willing to pay. The ask is the lower-is-better price sellers are asking for. When you open a position, you always pay the "bad" side: buying fills at the ask, selling fills at the bid.
The gap between them is the spread. The narrower the spread, the more liquid and efficient the market is. EUR/USD during London hours has one of the narrowest spreads in the world because thousands of banks and traders are constantly making markets.
You'll never see a bid that's higher than the ask in a working market. If that happens, the broker has lost its feed and you should stop trading until it comes back.
During the Aug 2019 JPY flash crash, USD/JPY's bid-ask gap widened to over 400 pips for a few minutes — the market effectively stopped functioning while liquidity dried up.
Frequently asked about bid / ask
What is a bid / ask in trading?+
The bid is what the market will pay you to sell; the ask is what the market will charge you to buy.
When will I see bid / ask used in real trading?+
On every forex chart and order window. Some platforms show only the mid-price but the underlying quote is always bid/ask.
What is the most common mistake traders make with bid / ask?+
Forgetting that your stop loss executes at the opposite price of your entry. A long entered at the ask 1.27325 with a 20-pip stop actually closes at the bid, so the real loss is 21.5 pips (including the spread).
What do experienced traders know about bid / ask that beginners don't?+
When watching a potential setup form on the chart, look at where the bid is — not the mid-price. The bid is your real exit level if you're long, and that's the number the market actually cares about.
Read the lesson here. Mark the chart on TradingView. Compare brokers with the checklist.
TradingView is the chart workspace most learners already recognize: watchlists, alerts, drawings, and clean multi-market charts. Broker research stays methodology-first: jurisdiction, costs, platform, withdrawals, and risk before any account decision.