Telling maker fills from taker fills in your OKX trade history
Every fill on OKX is either a maker fill, where your resting order added liquidity to the order book, or a taker fill, where your order matched immediately against existing orders. The two are usually charged at different rates, and the difference adds up over many trades. Yet many users only look at the total fee for a month and never ask which kind of fill they actually received. A limit order is not automatically a maker fill: if its price crosses the book, it executes immediately as a taker. This guide explains how to read your OKX fill history, separate maker and taker fills and use a simple log to understand your real costs. Current fee rates are on the official fee page, and this guide quotes none.
Where to find the information
Open your order or trade history on OKX and look at the individual fills rather than the order summary. Each fill typically shows the price, quantity, fee and an indication of whether it was a maker or taker execution. If you export history for record-keeping, check which columns carry this information so that your spreadsheet can sort fills by type. Look at a week of trading first rather than trying to analyse everything at once.
Why limit orders become taker fills
A limit order placed at a price that is already available on the other side of the book executes immediately and is treated as a taker fill. This often happens when users place limit orders slightly through the current price to make sure they fill. Order options such as post-only, where available, reject an order that would execute immediately, so it can only rest on the book. Read the order type descriptions in the help centre to see how each behaves before relying on it.
Keep a simple log
For each trade, note the instrument, order type, whether the fill was maker or taker, and the fee shown. After a few weeks, count how many fills fell into each group and compare the total fees. Many users discover that most of their fills were taker fills even though they thought they were mostly placing limit orders. That insight is more valuable than any general rule, because it reflects your own habits on your own account.
Using what you learn
If immediate execution matters more to you than cost, taker fills are a reasonable choice and the log simply makes the cost visible. If cost matters more, consider whether patient limit orders or post-only orders suit your trading. Remember that a resting order may never fill if the price moves away, so lower fees come with the risk of missing a trade. Review your log monthly and adjust your approach only when the numbers give you a clear reason to change.
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Scenario checkpoint
- Review individual fills rather than order summaries in OKX history
- Check whether each fill was marked as maker or taker
- Understand that limit orders crossing the book become taker fills
- Read how post-only orders behave in the OKX help centre
- Keep a monthly log of maker and taker fees from your own trades