About this guide: I'm Lawrence, the writer behind supa.is. Between February and May 2026 I've published 150+ articles on supa.is across crypto and brokerage tooling — including 30+ Hyperliquid-specific guides (recent examples: Hyperliquid Taker Fee vs Maker Fee Difference (2026), Hyperliquid Liquidation Price & Maintenance Margin, How to Set a Stop Loss on Hyperliquid (2026 Guide)). The most-repeated reader question across that Hyperliquid archive is exactly how to choose between cross and isolated margin, which is why I'm publishing this standardized guide instead of answering one-off.
Direct answer: Cross margin shares collateral across all cross positions and is Hyperliquid's default. It is capital-efficient, but one losing position can consume the buffer protecting other cross positions. Isolated margin confines collateral and liquidation to that isolated position; other isolated and cross positions are not affected. For a first controlled trade, isolated margin is usually easier to reason about. Cross margin is more suitable when you intentionally want positions to share equity and you monitor portfolio-level risk.
Source: Hyperliquid margining documentation. Checked July 15, 2026.
The difference that matters
| Question | Cross margin | Isolated margin |
|---|---|---|
| What backs the position? | Shared cross-account collateral | Margin assigned to that position |
| Can another position change its safety buffer? | Yes | No |
| What does a backstop liquidation affect? | Cross positions and cross margin | That isolated position and its margin |
| Can margin be added or removed after entry? | Shared at account level | Yes, subject to requirements |
| Best fit | Deliberate portfolio hedges and shared equity | Bounded experiments and separate trade risk |
Why the leverage number is not the whole risk
Initial margin is approximately position size × mark price ÷ leverage. Liquidation begins when equity falls below maintenance margin. The maintenance requirement depends on the asset and margin tier, and liquidations use mark price rather than a single last trade.
For cross positions, the displayed liquidation price can move with funding, deposits, withdrawals, and unrealized PnL in other positions. Hyperliquid explicitly notes that the actual cross liquidation price is independent of the leverage setting once the position exists: lower selected leverage initially allocates more collateral, but the cross account ultimately shares equity.
For isolated positions, selected leverage affects the allocated isolated margin and therefore the liquidation price. Read the exact mechanics in Hyperliquid liquidations.
When cross margin is reasonable
- You are running an intentional hedge or spread and want profitable legs to support losing legs.
- You understand the combined maintenance requirement of every cross position.
- You monitor account value, funding, and correlated stress—not only each position card.
- You have rules for reducing exposure before the shared pool is exhausted.
When isolated margin is clearer
- You are learning the venue with a small test.
- You want a known collateral boundary for one idea.
- Positions are unrelated and should not subsidize one another.
- You need to add or remove margin from a specific position deliberately.
Sub-accounts are a different boundary
If you want separate strategy balances, use actual sub-accounts rather than pretending multiple cross positions are isolated portfolios. Hyperliquid's sub-account documentation says sub-accounts are treated independently in the clearinghouse, share the master's fee tier, and do not receive referral discounts.
Decision checklist
Before submitting the order, answer:
- What is the maximum dollar loss for this idea?
- Which collateral can this position consume?
- Are other positions intended to hedge it or merely correlated with it?
- What mark price triggers liquidation and what stop acts before that point?
- What changes if funding or another cross position loses money?
FAQ
Can I switch from cross to isolated margin after opening a position on Hyperliquid?
No. Hyperliquid locks the margin mode at the time of order placement. You must choose cross or isolated before entering the trade.Does isolated margin guarantee I only lose my initial margin?
No. While isolated margin confines the collateral to that position, fast liquidations, fees, funding, and slippage can cause losses that exceed your initial margin allocation.Which margin mode is better for beginners?
Isolated margin is generally safer for beginners because it limits the maximum loss to the margin allocated to that specific position, preventing a single bad trade from wiping out your entire account.What happens if my cross margin account hits the liquidation threshold?
If your cross margin account falls below the maintenance margin requirement, all your cross positions will be liquidated simultaneously, not just the losing position.Risk Warning
Risk Warning: Crypto trading involves substantial risk of loss. Never invest more than you can afford to lose. This is not financial advice.
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