Crypto Gloss

Limit Order

A limit order is an instruction to buy or sell an asset only at a stated price or a better one. A buy limit sets the highest price the buyer will accept; a sell limit sets the lowest price the seller will accept. The price condition gives control over the fill price, but it does not guarantee that the order will execute.

How a Limit Order Works

On an exchange that uses an order book, a limit order may match immediately with available orders, fill in part, or remain open until it can be matched. A buy limit at or above available sell offers can be marketable when it arrives; a sell limit at or below available bids can be marketable. The exact outcome depends on the venue’s rules and the orders available at that moment.

For a resting order, price and queue position matter. A chart showing that a market price touched the limit does not prove that a particular order filled: the chart may use a different venue or pair, and orders ahead in the queue may have used the available volume. The exchange’s order history is the best place to check the actual fill and any remaining quantity.

Price Control and Execution

If a buy order has a limit of $100, it cannot execute above $100 on a conventional order book; it may execute at a lower available price. A sell limit of $100 cannot execute below $100; it may receive a higher price. A limit order can therefore control the worst acceptable execution price while leaving the timing and completeness uncertain.

An order can be partially filled when only some of its size matches available liquidity. The remainder may stay open, expire, or be canceled, depending on the time-in-force instruction and venue. Some platforms offer options such as “good till canceled,” “immediate or cancel,” or “post only”; their names and exact behavior are platform-specific.

Limit Orders on Crypto Platforms

Many centralized exchange order books support limit orders. A limit order that rests on the book can add liquidity, but a limit order that immediately matches an existing order may instead act as a taker. Fee treatment depends on the exchange’s schedule and on how the order executes, so a limit order is not automatically a lower-fee order.

Crypto apps may use “limit order” for different mechanisms. A standing order on an order book is not the same thing as an automated on-chain swap or a protocol-specific limit feature. Before relying on an order, check which venue or contract handles it, whether it can fill in pieces, how it expires, and where its status is shown.

Common Misconceptions

“If the chart touched my price, my order must have filled.” A displayed chart price may come from another market, and available volume at the relevant venue may already have matched orders ahead of yours. Confirm fills in that venue’s order history.

“Every limit order is a maker order.” An order that rests can provide liquidity; one that immediately crosses the book can take liquidity. The execution and fee rules vary by venue.

“A limit order guarantees the trade.” It constrains the acceptable price, not the execution. The order can remain unfilled or only partly fill if matching orders are unavailable or the order expires.

Social Media Sentiment

  • r/Crypto_com (2023): One user asked why a buy order had not filled even though the displayed price appeared to move below the limit. Replies discussed venue-specific order-book mechanics and the difference between a displayed price and an order’s place in the queue. This is one support-style thread, not evidence about how often exchanges fail to fill orders. Read the discussion about an unfilled buy order.

Last updated: 2026-10

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