Order types, and the one that quietly costs you money
Market, limit, stop and stop-limit. Which to use, when, and why defaulting to market is a permanent tax.
There are only four order types you need, and choosing between them correctly is worth more over a year than most indicator settings.
The four
| Order | What it does | Certain about | Uncertain about |
|---|---|---|---|
| Market | Trades now at the best available price | That it fills | What price you get |
| Limit | Trades only at your price or better | The price | Whether it fills at all |
| Stop | Becomes a market order once a level trades | That it triggers | The fill price |
| Stop-limit | Becomes a limit order once a level trades | The price | Whether it fills |
Market orders are the expensive default
A market order buys certainty of execution and pays for it twice: once in the spread, once in whatever slippage occurs. On a liquid major during London that cost is tiny. On a thin altcoin at 03:00 it is not.
On most crypto exchanges a market order also classifies you as a taker, which carries the higher fee. A venue charging 0.02% maker and 0.06% taker charges three times as much for impatience, on every trade, forever. Over a year of active trading that difference is often larger than the trader's entire edge. See maker and taker fees.
Limit orders, and the chasing trap
A limit order rests in the book until price comes to it. That makes it the right tool for a planned entry, and it usually qualifies for the cheaper maker fee because it adds liquidity rather than removing it.
The cost is real: a limit order one tick away from a move that never comes back leaves you watching the trade without you. The failure mode to avoid is chasing - cancelling and re-placing the limit higher and higher until it has become a market order with extra steps and a worse price. If you are going to chase, it is cheaper to admit it immediately and use a market order.
Stop orders are not guarantees
A stop loss is an instruction to trade at market once a level is reached. It guarantees the trigger, never the fill. In a gap, a news spike or a weekend move, the fill can be far worse than the level you set. Some brokers offer guaranteed stops for a fee, which is one of the few fees worth paying if you hold through events.
A stop-limit solves the price problem and creates a worse one: in a fast move it may not fill at all, leaving you in a losing position you believed was closed. For a protective stop, that trade-off is almost always wrong. Use a plain stop.
Where stop orders cluster, and why price visits them
Resting stops pile up just beyond obvious levels and round numbers. Clusters of resting orders are liquidity, and price is drawn to liquidity. This is not a conspiracy aimed at you; it is simply where the orders are. The practical defence is to place stops beyond the zone rather than at the exact line, and to accept a slightly wider stop with a correspondingly smaller position.
Take profit, and why most people set it wrong
A take profit is a limit order resting in the opposite direction. It is only honest if the market has a reason to reach it: a prior swing, the far edge of a range, a measured move. A target chosen because it produces a nice-looking ratio is a ratio, not a plan. Price it properly in the risk and reward planner.
What to do with this
- Default to limit orders for entries and targets. Reserve market orders for getting out when it matters.
- Use a plain stop, not a stop-limit, for protection.
- Place both before the trade is live, so neither decision is made while money is moving.
- If your venue charges a taker premium, treat every market order as a small voluntary donation and decide whether you meant to make it.
Ready to pick where to trade?
Once the basics click, match to a broker that fits your country and capital.