What is Position Bracket?
Position Bracket is a system that calculates maintenance margin requirements based on the size of your position and the tier it falls into.
As your position size increases:
- Maximum leverage decreases
- Maintenance margin requirements increase
This system helps protect both traders and the platform from excessive liquidation risk.
Tier Table Example
| Tier | Min position (USDT) | Max position (USDT) | Max Leverage | Maintenance Margin Rate (MMR) | Maintenance amount (USDT) |
| 1 | – | 300,000 | 150x | 0.33% | 0 |
| 2 | 300,000 | 750,000 | 100x | 0.5% | 510 |
| 3 | 750,000 | 3,000,000 | 75x | 0.65% | 1,635 |
| 4 | 3,000,000 | 10,000,000 | 50x | 1% | 12,135 |
| 5 | 10,000,000 | 20,000,000 | 25x | 2% | 112,135 |
| 6 | 20,000,000 | 30,000,000 | 1x | 50% | 9,712,135 |
Note: Specification varies depending on the token. Check the Trading Rules Page for details.
Column Definitions
-
Position Size (USDT)
Your total notional position value used to determine the Tier. -
Max Leverage
Highest leverage allowed in that Tier. -
MMR (Maintenance Margin Rate) and Maintenance Amount
Used to calculate the required maintenance margin.
Maintenance Margin Formula
Maintenance Margin (USDT) = Notional Position Value × MMR − Maintenance Amount
Scenario 1: Isolated Margin Mode
In Isolated Margin, Flipster evaluates:
- Order placement: using Average Entry Price (entry-based value)
- Liquidation risk / Maintenance Margin: using Mark Price (real-time value)
1) Initial Open (No Existing Position)
If you do not have any open positions, your Tier is determined directly by the size of your new order.
Case A: Opening in Tier 1
- Position opened: 200,000 USDT
- Tier: 0 - 300,000 → Tier 1
- Max leverage: 150×
Maintenance Margin: 200,000 × 0.33% − 0 = 660 USDT
Case B: Opening in Tier 2
- Position opened: 500,000 USDT
- Tier: 300,000 - 750,000 → Tier 2
- Max leverage: 100×
Maintenance Margin: 500,000 × 0.50% − 510 = 1,990 USDT
2) After Price Increases (Mark Price Goes Up)
Assume you opened 200,000 USDT in Tier 1 and the Mark Price doubles.
- Entry-based value: 200,000 USDT (unchanged)
- Mark-price value: 400,000 USDT
2-1) Maintenance Margin Adjusts Automatically
Maintenance margin always follows the Mark Price.
- Current mark-price value: 400,000 USDT
- Tier changes from Tier 1 → Tier 2
New Maintenance Margin: 400,000 × 0.50% − 510 = 1,490 USDT
Result: Required maintenance margin increases from 660 → 1,490 USDT. If your available margin cannot cover this, liquidation risk increases.
2-2) Adding to Position (Tier Remains the Same)
You add 100,000 USDT.
In Isolated Margin, tier checks use entry-based value:
- Existing position (entry): 200,000
- New order: 100,000
- Total: 300,000 → still Tier 1
Max leverage remains 150×.
Result: Even though your mark-price value is already 400,000 USDT, the system still treats your position as 200,000 USDT for order-tier checks, allowing you to remain in Tier 1.
2-3) Adding to Position (Tier Changes)
You add 200,000 USDT instead:
- Existing position (entry): 200,000
- New order: 200,000
- Combined: 400,000 → Tier 2
- Tier 2 max leverage: 100×
Flipster must now ensure the total effective leverage does not exceed 100×.
How Flipster calculates the new order’s max leverage:
- Existing margin
200,000 ÷ 150 = 1,333 USDT - Required total margin at 100×
400,000 ÷ 100 = 4,000 USDT - Margin needed for the new order
4,000 − 1,333 = 2,667 USDT - Max leverage for new order
200,000 ÷ 2,667 ≈ 75×
Result: Although Tier 2 allows up to 100×, your new order is limited to ~75× so that total leverage is brought down to Tier 2 limits.
Scenario 2: Cross Margin Mode
In Cross Margin, Flipster uses Mark Price for both order-tier checks and liquidation.
After Price Increase
Initial position: 200,000 USDT
Mark Price doubles → 400,000 USDT
This 400,000 USDT becomes your official position size immediately.
Adding 100,000 USDT
- Existing (mark): 400,000
- New: 100,000
- Total: 500,000 → Tier 2
Effective leverage capped at 100×
Unlike Isolated Margin, price appreciation is included instantly, pushing you into Tier 2.
Adding 400,000 USDT
- Existing (mark): 400,000
- New: 400,000
- Total: 800,000 → Tier 3
- Tier 3 max leverage: 75×
New Order Leverage
- Existing margin
400,000 ÷ 150 = 2,667 USDT - Required margin at 75×
800,000 ÷ 75 = 10,667 USDT - New margin needed
10,667 − 2,667 = 8,000 USDT - Max leverage for new order
400,000 ÷ 8,000 = 50×
Result: Even though Tier 3 allows 75×, your new order is limited to ~50× to ensure total effective leverage stays within Tier 3 limits.
Key Takeaways
- Maintenance margin always follows the Mark Price.
-
Isolated Margin
- Order-tier checks use Avg Entry Price
- Liquidation uses the Mark Price
-
Cross Margin
- Both order-tier checks and liquidation use Mark Price
- Moving into higher tiers:
- Reduces maximum leverage
- Increases maintenance margin
- May force new orders to use lower leverage to keep total effective leverage within tier limits.
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