# FX Liquidity > Forex is the largest market in the world, but liquidity varies by pair, time and venue. Learn how FX is structured, who provides liquidity and when it dries up. Source: https://learn.tradelabsai.com/forex/fx-liquidity/ Track: Forex · Level: Intermediate · Updated: 2026-10-03 Publisher: TradeLabs AI (https://tradelabsai.com). Education, not financial advice. Cite as: TradeLabs Learn, "FX Liquidity", https://learn.tradelabsai.com/forex/fx-liquidity/ The foreign exchange market is the largest financial market in the world, with average daily turnover of about $7.5 trillion according to the Bank for International Settlements 2022 survey. But that headline hides big differences. EUR/USD during the London morning is extremely liquid; an exotic pair on a holiday afternoon can be thin and expensive. Forex has no central exchange, so liquidity is spread across banks, electronic platforms and brokers. Understanding this structure helps traders know when and where costs are lowest and when risk of sudden gaps is highest. The general concept is in [Liquidity](https://learn.tradelabsai.com/markets/liquidity/). ## How the FX market is structured | Tier | Participants | How they trade | |---|---|---| | Interdealer market | Large banks, major market makers | Electronic platforms such as EBS and Refinitiv (LSEG) Matching, and direct dealing | | Dealer to client | Banks serving funds, corporations, central banks | Multi dealer platforms, single bank portals | | Non bank liquidity providers | Electronic trading firms | Stream prices to platforms and brokers | | Retail brokers | Individuals | Aggregate prices from liquidity providers or make markets themselves | Prices are quoted by many participants simultaneously, with no single official price. See [OTC Markets](https://learn.tradelabsai.com/market-structure/otc-markets/) and [Market Makers and Liquidity Providers](https://learn.tradelabsai.com/market-structure/market-makers/). ## Turnover by instrument According to the 2022 BIS survey, FX swaps made up the largest share of turnover (about half), followed by spot (about 28%), outright forwards and options. Spot is what most retail traders trade; swaps are used mainly for funding and hedging. See [FX Swaps and Currency Swaps](https://learn.tradelabsai.com/forex/fx-swaps-and-currency-swaps/). ## Liquidity by pair | Pair type | Typical spread (liquid hours) | Depth | |---|---|---| | EUR/USD, USD/JPY | Fractions of a pip | Very deep | | Other majors (GBP/USD, AUD/USD) | Under 1 to 2 pips | Deep | | Major crosses (EUR/GBP, EUR/JPY) | 1 to 3 pips | Good | | Exotics (USD/TRY, USD/ZAR) | 10 pips or more | Thin; can gap | Figures are typical ranges for retail platforms and vary by broker and conditions. See [Currency Pairs: Majors, Minors and Exotics](https://learn.tradelabsai.com/forex/currency-pairs/). ## Liquidity by time - **Highest:** London morning and the London New York overlap. - **Lower:** late New York afternoon and the Asian session for European pairs. - **Thinnest:** the hour after the 5 p.m. New York rollover, Sunday open, and major holidays. See [Forex Trading Sessions](https://learn.tradelabsai.com/forex/forex-trading-sessions/). ## When liquidity disappears Liquidity can vanish quickly during shocks, when market makers widen spreads or stop quoting. **Example: The 2016 pound flash crash** In the early Asian session on 7 October 2016, GBP/USD fell about 6% within minutes, briefly trading near 1.18 before recovering much of the drop. A BIS report later pointed to thin liquidity at that hour, combined with a large sell order, possibly algorithmic, and stop orders that added to the move. Traders with stops below the market were filled far from their levels. See [Slippage](https://learn.tradelabsai.com/markets/slippage/). Other examples include the January 2015 Swiss franc shock and the January 2019 yen flash crash in early Asian trading, when AUD/JPY fell sharply in minutes. See [Central Bank Intervention](https://learn.tradelabsai.com/forex/central-bank-intervention/). ## Measuring liquidity - **Spread:** the most visible cost. See [Bid-Ask Spread](https://learn.tradelabsai.com/markets/bid-ask-spread/). - **Depth:** how much can trade near the best price. - **Resilience:** how fast spreads recover after a large trade. - **Market impact:** how much your order moves the price. See [Market Impact](https://learn.tradelabsai.com/orders/market-impact/) and [Measuring Liquidity](https://learn.tradelabsai.com/market-structure/measuring-liquidity/). ## Retail broker considerations - **Market maker vs agency model:** some brokers take the other side; others pass orders to liquidity providers. Execution quality varies. - **Last look:** some liquidity providers can reject trades within milliseconds of receiving them, a practice the FX Global Code requires to be disclosed. - **Requotes and slippage** increase in fast markets. ## Practical tips 1. **Trade liquid pairs** during their active sessions. 2. **Avoid market orders** in thin conditions; use limit orders where possible. See [Limit Orders](https://learn.tradelabsai.com/orders/limit-orders/). 3. **Size down** when trading exotics or holiday markets. 4. **Expect wider spreads** around news and the daily rollover. 5. **Keep stops** outside obvious levels where liquidity may be thin. ## Frequently asked questions ### How liquid is the forex market? It is the most liquid market in the world, averaging about $7.5 trillion a day in 2022, but liquidity varies greatly by pair, time and conditions. ### When is forex liquidity lowest? Around the 5 p.m. New York rollover, at the Sunday open, during major holidays and in the Asian session for European pairs. ### Who provides liquidity in forex? Large banks, electronic non bank market makers and, for retail traders, brokers that aggregate prices from these providers or make markets themselves. Next, learn how future exchange rates are priced in [FX Forwards and Forward Points](https://learn.tradelabsai.com/forex/fx-forwards-and-forward-points/). ## Sources - Bank for International Settlements, [Triennial Central Bank Survey](https://www.bis.org/statistics/rpfx22.htm) ## Continue learning - Next lesson: [FX Forwards and Forward Points](https://learn.tradelabsai.com/forex/fx-forwards-and-forward-points/) - Previous lesson: [FX Fixings: London and Tokyo](https://learn.tradelabsai.com/forex/fx-fixings-london-and-tokyo/) - Related: [FX Fixings: London and Tokyo](https://learn.tradelabsai.com/forex/fx-fixings-london-and-tokyo/): FX fixings are daily benchmark exchange rates used by funds and companies. Learn how the London 4pm and Tokyo fixes work, the flows around them and the 2013 scandal. - 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: [Forex Trading Sessions](https://learn.tradelabsai.com/forex/forex-trading-sessions/): Forex trades 24 hours a day, five days a week, across four main sessions. Learn session times, overlaps, which pairs move when and how sessions affect spreads. - Related: [Measuring Liquidity](https://learn.tradelabsai.com/market-structure/measuring-liquidity/): Liquidity can be measured with spreads, depth, volume, turnover and price impact. Learn the key measures, formulas and how to use them before you trade. - Related: [Currency Pairs: Majors, Minors and Exotics](https://learn.tradelabsai.com/forex/currency-pairs/): Forex trades currencies in pairs, like EUR/USD. Learn base and quote currencies, how to read a quote, majors, crosses and exotics, and what moves each pair. - Related: [Market Makers and Liquidity Providers](https://learn.tradelabsai.com/market-structure/market-makers/): Market makers quote prices to buy and sell all day, earning the spread. Learn how they make money, manage risk, why they matter and the myths about them.