A stop-loss is a price you set in advance at which your position closes automatically, so a loss can't grow beyond what you planned. Sounds simple, but beginners lose money less often from having no stop than from placing it carelessly. In this lesson we'll go through the types of stop orders, how to pick your stop level, and how to size your position, because without the right size a stop doesn't really protect your account.
- A stop-loss caps your loss in advance, while you're thinking calmly, not in the middle of a drop.
- You pick the stop level from the chart and volatility, then adjust your position size to fit the risk you can accept.
- A stop-market order will almost always close your position but may fill worse than your price; a stop-limit may not fill at all.
- Moving your stop further away as price approaches it is the most expensive habit a trader can have.
Why you need a stop-loss
Every trade is an assumption, and some of your assumptions will turn out to be wrong. The question isn't whether you'll have losing trades, but how big they'll be. A stop-loss swaps a vague "let's see how it goes" for a clear rule: if price hits this mark, the idea has failed, and I'm out.
The biggest benefit of a stop is psychological. You decide where to exit while you're calmly studying the chart, not while you're staring at a loss and telling yourself a reversal is just around the corner. Without a stop, a small loss easily turns into a big one: you wait, average down, wait some more, and end up closing at the very bottom.
In crypto this matters twice as much. The market never sleeps, and sharp moves often happen overnight or on weekends while you're asleep. A stop that sits on the exchange will trigger whether you're there or not. Why emotions make it so hard to close a losing trade is covered in the lesson on how to manage emotions in trading.
To get back to breakeven from a 20% loss, a position needs to gain 25%, and from a 50% loss it needs a full 100%. The deeper the drawdown, the harder it is to climb out, so it pays to cut losses while they're small.
Types of stop orders
On exchanges, a stop-loss is set up as a conditional order. You choose a trigger price, and when the market reaches it, the exchange places a regular order for you. Which kind of order that is depends on the stop type you picked, and that in turn determines how your stop behaves during a sharp move.
A stop-market order becomes a market order once it's triggered and closes your position at the best available price. It's the reliable option, although in a crash or a thin order book the fill can be noticeably worse than your stop price. A stop-limit order becomes a limit order at a set price: there's no slippage, but if price jumps past your limit, the order just sits there unfilled and your position stays open.
Most traders use stop-market orders to protect against losses: it's better to get out a little worse than planned than not to get out at all. How market and limit orders work in the first place is explained in detail in the lesson on order types.
| Type | How it works | Pro | Con |
|---|---|---|---|
| Stop-market | Sends a market order when the price is reached | Almost guaranteed exit | Possible slippage |
| Stop-limit | Places a limit order when the price is reached | Control over the fill price | May not fill during a sharp move |
| Trailing stop | Follows the price at a set distance | Protects accumulated profit | Triggers on normal pullbacks if the distance is too small |
Where to place your stop
A bad stop is set from a dollar amount: "I'm willing to lose $50, so my stop goes this far down." The market doesn't care about your limits. A good stop goes where your trade idea stops being valid, and you control the dollar risk through your position size.
Most of the time, a technical level is your guide. If you're buying off support, put your stop just below it: a breakdown means the bounce scenario is off. When you're buying in an uptrend, the logical spot is below the last swing low. Leave a small buffer beyond the level, because price likes to poke through obvious levels before it turns around.
The second method is based on volatility. The ATR indicator shows the average candle range, and you place your stop one or two ATRs away from your entry. That way the stop fits the coin's personality: calm bitcoin and a jumpy small-cap altcoin need different distances. How to read ATR and other indicators is covered in the lesson on technical analysis indicators.
A percentage stop, say a flat 5% below your entry, is simple, but it knows nothing about levels or volatility. It works as disaster insurance on long-term buys, but in active trading it usually loses out to the first two methods.
Lots of stops cluster under marks like 60,000 or right under an obvious low, and price often dips into that zone before reversing. Give it a little extra room and a random wick won't knock you out.
Position size: a stop doesn't work without it
Your stop decides where you get out, and your position size decides how much you lose when you do. Many experienced traders cap their risk per trade at a small slice of their account, most often 1–2%. It's a guideline, not a hard rule, but the logic is simple: even ten losing trades in a row won't wipe out your account.
The calculation takes three steps, and it's worth practicing until it's automatic. Example: a 1,000 USDT account and 1% risk, which is 10 USDT. Entry at 100, stop at 95, so you're risking 5 USDT per coin. That means you can buy 2 coins, a 200 USDT position. If the stop triggers, you lose the planned 10 USDT plus fees and any slippage.
Note that a wider stop doesn't mean more risk. If the chart calls for a stop further away, you simply take a smaller position. That's how professionals keep losses under control no matter how volatile the market gets.
- Work out your acceptable risk per trade in money: your account size times your chosen percentage.
- Find your stop level on the chart and measure the distance from entry to stop.
- Divide your risk amount by that distance to get the number of coins in your position.
- Account for fees and, if you're trading with leverage, make sure your stop will trigger before price reaches your liquidation level.
How to manage your stop when a trade is in profit
A stop isn't only there to limit losses; it also protects what you've already made. Once price moves your way, you can trail your original stop. Do it by rules, not by mood: for example, move it below each new swing low in an uptrend, or keep it a fixed number of ATRs away from price.
A trailing stop does this for you: it follows price at a set distance and never moves back. It's handy in a strong trend when you can't tell where the move will end. But if the distance is too tight, the trailing stop will close you out on the first ordinary pullback, and most of the move will happen without you.
Only ever move a stop in the direction of less risk: closer to price is fine, further away is not. How to plan taking profits in stages and at set targets is explained in detail in the lesson on how to take profits.
Mistakes that keep your stop from protecting you
Even traders who always use stops often lose money because of the same few habits. Most of them have nothing to do with technique and everything to do with not wanting to admit a mistake.
A separate word on leveraged trading. Here a stop is a must: without one, liquidation will close your position and you'll lose the entire margin on the trade. If your chart-based stop ends up beyond the liquidation price, your leverage is too high for that trade. The mechanics are covered in the lesson on margin trading.
- Moving your stop further away as price gets close: that's how a loss grows with no plan behind it.
- Placing your stop too close, inside normal price swings, and getting shaken out by noise again and again.
- Keeping your stop "in your head" instead of as a real order on the exchange.
- Removing your stop ahead of news and hoping to get lucky.
- Jumping right back in after your stop triggers to win back the loss.
A mental stop won't trigger while you sleep, and it almost never triggers when you're at the screen either: there's always a reason to wait a little longer.
On the BuyCrypt demo account, open BTC/USDT, find the level on the chart where your idea stops working, and size your position so that a loss at the stop equals 1% of your virtual balance. Open the trade with a stop-loss right away, then repeat the calculation for a more volatile altcoin: with the same risk in USDT, the stop will be further away and the position smaller.
Entry is free and you trade on a demo account, so you need no money of your own. Free tournaments pay out Tour Passes, and those get you into tournaments with USDT prizes. The best go further — to a $5,000 funded account.
FAQ
Do I always have to set a stop-loss?
In active trading, especially with leverage, yes: it's the only way to limit your loss in advance. Some long-term investors do without stops, but then they control risk through how much they invest and their willingness to sit through a deep drawdown.
Why did my stop fill at a worse price?
Most likely it was a stop-market order, and when it triggered the market was moving fast or there were few orders in the book. The difference between your stop price and the fill price is called slippage. You can't get rid of it completely, but on liquid pairs it's usually small.
What should I do if my stop keeps getting hit and then price goes my way?
Your stop is probably sitting inside normal swings or right on an obvious level. Try placing it with an ATR-based buffer and shrinking your position so your risk in money stays the same.
When should I move my stop to breakeven?
Usually after price has moved your way by a distance comparable to your initial risk, or has broken the next level. If you move your stop too early, an ordinary pullback will often knock you out of the trade.
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