Spread
The difference between the buy (ask) and sell (bid) price — your cost of entering a trade.
During the Dec 2023 FOMC, EUR/USD's normal 0.8 pip spread blew out to 15 pips in the first 30 seconds after the decision. Traders with market orders got filled 15 pips worse than the screen price.
Related terms
Bid / Ask
beginnerThe bid is what the market will pay you to sell; the ask is what the market will charge you to buy.
Pip
beginnerThe smallest standard price move in a currency pair — the building block of every forex profit or loss.
Pipette
beginnerOne-tenth of a pip — the fifth decimal place on most forex quotes, shown by brokers that quote fractional pips.
Broker
beginnerThe company that gives you access to the forex market — the middleman between you and the currency you want to trade.
Balance
beginnerThe total cash in your trading account, not counting any open-trade P&L.
Equity
beginnerBalance plus or minus your current floating P&L — what you'd have if you closed every trade right now.