Available leverage depends on the contract, position tier and rules that apply to the account. Check Market information and Trading rules on the live trading screen; one advertised maximum does not apply to every position size.
Isolated margin assigns collateral to one position. Cross margin shares eligible margin within the applicable account mode, so other positions and their PnL can affect the result. Cross does not mean every balance in every OKX account is automatically liquidated.
Assuming USDT isolated margin, a 1,000 USDT margin balance, no added margin, m = 0.5% and f = 0.05%, the estimate is 70,000 × (1 − 1/10) ÷ (1 − 0.005 − 0.0005) ≈ 63,348.42 USDT. Both rates are example inputs, not current account rates.
Once the account reaches the liquidation condition, the system may cancel relevant open orders, then reduce the position by risk tier and recalculate risk. There is no universal 25-50% reduction or trigger at 80% or 90% of the distance to liquidation.
Leverage describes the ratio of notional exposure to initial margin. Actual loss also depends on position size, price movement, fees and changes to margin. Leverage alone cannot tell you the probability of liquidation.
1. What leverage actually is — notional vs margin
You have 1,000 USDT in your OKX account, you pick 10x leverage, and you open a BTC-USDT-SWAP long. The system gives you a 10,000 USDT notional position, and 1,000 USDT of that sits as your initial margin.
PnL on the position calculates against the full 10,000 USDT notional, while your downside collateral is the 1,000 USDT only. BTC up 1% means you gain 100 USDT, which is 10% of margin. BTC down 1% means you lose the same 100 USDT, again 10% of margin. That is the entire magic of leverage.
If fees are ignored for a moment, a 10% fall on that notional produces a loss equal to the 1,000 USDT margin. That is the point where margin is exhausted. The platform still requires maintenance margin, so liquidation can happen earlier.
2. Isolated vs cross — two different risk models
OKX perps support two margin modes — Isolated and Cross. The difference is the pool of collateral used by the risk calculation.
Isolated. Margin is assigned to one position. If you later add margin, the amount at risk rises too, so the original transfer is not a permanent loss cap.
Cross. Eligible margin in the applicable account mode supports the position. A loss on one position can affect other cross positions, but that does not mean the funding account, every currency and every balance are automatically emptied together.
The calculation scope is the practical distinction. Isolated can be estimated from this position's quantity, entry price and margin balance. Cross also needs the other positions, their PnL and the applicable margin requirements. A calculator with three inputs cannot reconstruct the whole account.
On the position panel, confirm the Isolated/Cross label and then read the current margin balance. Do not rely on the setting you remember from the previous order.
3. Maintenance margin rate (MMR) — the variable that matters
Call the tier maintenance margin rate m. It determines how much margin the position must retain. It is not the same number as an account risk ratio that the interface may display as 100% or 300%.
For a linear USDT contract, maintenance margin changes with “base quantity × mark price × m.” As price changes, the required amount changes too. Taking a fixed percentage of the entry notional and subtracting it from price misses that dependency.
Open Market information → Trading rules to see the tier for the specific contract. The worked examples use m = 0.5% and a fee rate f = 0.05%; both are assumptions for the arithmetic. The formula follows the OKX futures PnL rules, checked in September 2026.
4. Worked liq price: 1,000 USDT × 10x BTC long
Let entry price P = 70,000 USDT and margin balance M = 1,000 USDT. At open, use 10x to determine the quantity and assume no added margin. Notional is 10,000 USDT, so base quantity Q = 10,000 ÷ 70,000 = 1/7 BTC. Q is the coin quantity, not a contract count; converting to contracts also needs the contract value.
For a long, equity at price x is M + Q × (x − P). In this simplified model, set that equal to Q × x × (m + f) and solve:
Long estimated liq price x = (Q × P − M) ÷ [Q × (1 − m − f)]
Short estimated liq price x = (Q × P + M) ÷ [Q × (1 + m + f)]
When M = Q × P ÷ L:
Long x = P × (1 − 1/L) ÷ (1 − m − f)
Short x = P × (1 + 1/L) ÷ (1 + m + f)For the long: 70,000 × 0.9 ÷ 0.9945 ≈ 63,348.42 USDT, about 9.50% below entry. The unrealised loss is about 950.23 USDT, leaving equity of about 49.77 USDT, which equals the maintenance-margin and fee requirement in this model. The balance has not first fallen to zero.
For the short under the same assumptions: 70,000 × 1.1 ÷ 1.0055 ≈ 76,578.82 USDT, about 9.40% above entry. The distances are not perfectly symmetric because price also changes the margin requirement in the denominator.
If the result differs from the position panel, check the margin balance, actual position quantity, tier rate and fee rate one by one. After adding margin, return to the formula with M and Q; M = QP/L no longer holds. Funding can also change M, and the settlement interval must be read from the contract rather than assumed to be eight hours.
5. Liquidation distance at five leverage levels
Keep the margin balance at 1,000 USDT and recalculate the opening quantity at each leverage setting. These are different position sizes, not a claim that changing the leverage control on one existing position changes its quantity.
Example inputs: BTC long, 70,000 USDT entry, isolated margin, m = 0.5%, f = 0.05%.
- 5x → estimated liq price 56,309.70 USDT, distance from entry −19.56%
- 10x → estimated liq price 63,348.42 USDT, distance from entry −9.50%
- 20x → estimated liq price 66,867.77 USDT, distance from entry −4.47%
- 50x → estimated liq price 68,979.39 USDT, distance from entry −1.46%
- 100x → estimated liq price 69,683.26 USDT, distance from entry −0.45%
The 100x row leaves only about 0.45% of price distance. It does not say how quickly price will travel that distance and cannot be turned into a liquidation probability. Price distance and market forecasting are separate questions.
This is also not a table of position sizes the platform promises to accept. The current leverage cap, risk tier and available margin can still constrain the order.
6. Partial liquidation — OKX's "trim first" mechanism
According to the OKX forced-liquidation explanation checked in September 2026, the system may cancel relevant open orders after the risk ratio reaches the liquidation condition. If the account still fails the requirement, it reduces the position according to the risk tier and checks risk again.
That means partial liquidation is not “trim once at 80% of the distance and again at 90%,” and there is no 25-50% reduction that applies to every position. You can draw your own warning levels, but they are not exchange liquidation thresholds.
To verify an actual reduction, use the forced-reduction record in order history and set the chart to mark price. A last-price candle may not match the price used by the risk engine.
7. Converting funding on notional back to margin
Use a separate cost example: 10,000 USDT notional, 1,000 USDT margin, an assumed payment of 0.034% every eight hours, and an unchanged position value. Each payment is 10,000 × 0.00034 = 3.40 USDT, or 10.20 USDT for three payments in a day.
If the same rate is extended for a year only to compare costs, 0.034% × 3 × 365 = 37.23% of notional. Relative to 1,000 USDT of margin, it is 372.3%. The previous version labelled the first percentage as a margin cost and understated it by ten times. This annualisation is static arithmetic, not a forecast of future funding.
Open interest cannot supply the missing inputs. OI measures outstanding contract size; it does not reveal an individual account's leverage or margin balance. To separate account ratios from selected-trader position ratios, see the long/short ratio guide.
8. What leverage should a new trader actually use
I would start with the amount I am prepared to lose and only then look at the leverage menu. Without a position quantity and an exit condition, “3x or 10x” is not enough to calculate a trade's loss.
For a pure arithmetic example, take 10,000 USDT notional and plan to exit after a 1.5% adverse move. The price loss is 150 USDT, before fees and slippage. A stop price is a trigger, not a guaranteed fill, so 150 USDT is not a guaranteed loss cap.
If the quantity unit, margin mode or trigger-price type on the order panel is still unclear, verify it in a simulated environment first. The liquidation price calculator uses a zero-fee isolated model. To reproduce this article's example with fees, use the formula above. The calculator has no account data and cannot replace the position panel.
Next, read the stop-loss / position-size paradox to fold leverage and stop placement into the same equation. Or open the position calculator and run your next planned trade through it.