Stop-loss and take-profit orders define conditions for exiting a trade. A stop loss is intended to reduce exposure when the market moves against you. A take profit is intended to close exposure after a favorable move. Neither guarantees a particular result.
The most useful distinction is between the trigger price, which starts an action, and the execution price, which determines your actual proceeds or loss.
Stop loss and take profit for long and short positions
For a long position, falling prices create losses, so a protective stop is normally below entry. For a short position, rising prices create losses, so a protective stop is normally above entry.
The following prices are hypothetical examples, not recommended Bitcoin levels.
| Position | Entry | Stop-loss trigger | Take-profit trigger |
|---|---|---|---|
| Long BTC | 50,000 USDT | 48,500 USDT | 53,000 USDT |
| Short BTC | 50,000 USDT | 51,500 USDT | 47,000 USDT |
At a position size equivalent to 0.02 BTC, the planned adverse move is 1,500 USDT per BTC. That creates a 30 USDT planned price loss. The favorable move of 3,000 USDT creates a 60 USDT planned price gain.
The reward-to-risk ratio is 2:1 before costs. It tells you about these exit distances. It says nothing about how likely either exit is to occur.
For derivatives, these calculations assume a linear contract with that BTC-equivalent exposure. Other contract structures can calculate profit and loss differently.
Why your stop price is not a guaranteed exit price
A stop-market order submits a market order after the trigger condition is met. Its fill depends on the liquidity available at that moment.
Return to the hypothetical long position. If the stop triggers at 48,500 but the exit fills at an average of 48,200, the price loss becomes:
0.02 × (50,000 − 48,200) = 36 USDT
That is 6 USDT more than the planned 30 USDT loss, before fees. A trigger working correctly can still produce a worse execution price.
A stop-limit order instead submits an order with a price boundary. It can remain unfilled if the market moves beyond that boundary.
For example, a sell stop triggered at 48,500 with a 48,400 limit would not authorize selling below 48,400. If eligible bids disappear below that price, the position can remain open while losses grow.
Check which price activates the order
Contract products may let you select the last traded price, mark price or index price as a trigger reference. Those prices can differ. A chart showing one reference may therefore appear inconsistent with an order triggered by another.
Before submitting an exit, write down the reference you selected. When reviewing the result, compare the order with that same reference and timestamp.
Also identify what a percentage input means. A percentage price move and a percentage return on leveraged margin describe different quantities. If the interface is unclear, use the product documentation before entering a number.
Calculate position size from the planned loss
A stop distance becomes more meaningful when connected to position size.
For a simple linear position:
Position quantity = planned price-loss budget ÷ distance from entry to stop
Using the earlier example:
30 ÷ 1,500 = 0.02 BTC
If you double the quantity to 0.04 BTC, the same entry and stop produce a planned price loss of 60 USDT. The stop price has stayed constant, but the financial exposure has doubled.
This formula excludes slippage, fees and any funding payments. If your total acceptable loss were 30 USDT, allocating all 30 to the price move would leave no room for those costs. The budget is an illustration, not a suggested personal risk limit.
Review the exit after the trade changes
An exit plan needs another check after you add to a position or close part of it. Confirm that the remaining exit quantity matches the exposure you intend to close.
Where supported, reduce-only settings restrict an order to decreasing a position. Order features and behavior vary, so check the specific product rather than assuming an old instruction still applies.
Before relying on a TP/SL setup, verify:
- The correct position, direction and quantity.
- The trigger price and its reference price.
- The market or limit instruction submitted after triggering.
- Whether another exit is canceled when one executes.
- The remaining position after a partial fill or manual close.
Frequently asked questions
Does a stop loss prevent liquidation?
It can help close exposure earlier, but it cannot guarantee this. Trigger references, execution delays and rapid price moves matter. A liquidation estimate should not substitute for a planned exit.
Is a 2:1 reward-to-risk ratio enough to make a strategy profitable?
No. Results also depend on win rate, actual fill prices and costs. Two losing trades of 30 USDT and one winning trade of 60 USDT break even before costs and lose money after costs.
Can I use the same percentage stop on every asset?
That can create inconsistent outcomes because prices, volatility and liquidity differ. Evaluate the monetary loss and execution conditions for the particular position.
Before using contract risk tools, read the MERCADE contract trading overview and confirm the features and rules available for your chosen market.
Educational information only. Stop-loss and take-profit orders do not guarantee execution or a maximum loss. Crypto derivatives carry substantial risk.
