Core mechanics of perpetual futures trading on TTT, including:

• Trading fees
• Funding rate and funding fee
• Margin and leverage calculations
• Margin ratio and maintenance margin(MMR)
• Liquidation price

Trading Fees

Trading fees are charged when opening and closing perpetual positions on TTT.

Fees are calculated based on the total position size, not the margin amount used.

Fee Structure

Maker Fee

A Maker order adds liquidity to the order book.

This usually happens when a Limit Order is placed at a custom price and is not filled instantly.

Example

BTCUSDT current price: 80,000 USDT

You place a Buy Limit order at 79,000 USDT.

The order remains open in the order book until the market reaches the selected price.

This order is considered a Maker order.

Taker Fee

A Taker order removes liquidity from the order book.

This usually happens when:

• A Market Order is executed instantly;
• A Limit Order is matched immediately against existing orders in the order book.

Example

BTCUSDT current price: 80,000 USDT

You place a Market Buy order.

The order executes instantly using available market liquidity.

This order is considered a Taker order.

Trading Fee: How Is It Calculated?

A trading fee is charged whenever an order is successfully executed. The fee is calculated based on the total value of the executed order.

There are two types of trading fees:

• Maker Fee: 0.04%
• Taker Fee: 0.04%

Since both rates are the same, the fee amount is identical whether the executed order is Maker or Taker.

Trading Fee Formula

Trading Fee = Order Value × Fee Rate

Order Value = Quantity × Execution Price

Therefore:

Trading Fee = Quantity × Execution Price × 0.04%

Example

Quantity = 2 BTC
Execution Price = 50,000 USDT

Order Value= 2 × 50,000 = 100,000 USDT

Trading Fee= 100,000 × 0.04% = 40 USDT

Deposit & Withdrawal Limits and Fees

Funding Rate

Funding Rate is a periodic payment exchanged between Long and Short traders to help keep the perpetual market price close to the Index price.

Funding is not paid to the exchange. It is exchanged directly between traders.

You can check detailed funding rate information for any perpetual contract directly from the trading page.

To access it:

1. Open a perpetual trading pair.
2. On the top-right section of the trading page, tap the Funding Rate or Funding Info button.

Inside the Funding Rate section, you can view:

• Current funding rate
• Funding settlement interval/timeframe
• Next funding countdown
• Historical funding rate records
• Funding rate percentage history
• Funding rate movement chart

The funding chart helps users monitor how funding sentiment changes over time between Long and Short positions.

Different perpetual contracts can have different funding settlement intervals depending on market volatility and contract configuration.

Positive Funding Rate

When funding rate is positive:

• Long positions pay
• Short positions receive

Usually happens when market sentiment is bullish.

Negative Funding Rate

When funding rate is negative:

• Shorts pay
• Longs receive

Usually happens when market sentiment is bearish.

Funding Rate Calculation

Funding rate is mainly derived from the premium difference between perpetual market price and index price.

General Formula:

Funding Rate=Premium Index+Interest Rate

Note: The interest rate component used in funding rate calculation is fixed at 0.01%.

Funding Fee Calculation

Formula:

Funding Fee=Position Size×Funding Rate

Example

• Position Size: 10,000 USDT
• Funding Rate: 0.01%

Calculation:

10,000×0.0001=1 USDT

Result:

• Long trader pays 1 USDT
• Short trader receives 1 USDT

Funding Rate Settlement Model

The funding rate system in TTT uses a margin-to-margin settlement model.

At each funding interval:

• The paying side (Longs or Shorts) will have the funding fee deducted directly from their position margin (collateral)
• The receiving side will receive the funding payment directly into their position margin proportionally based on their position size

Funding fee calculation:

Funding Fee = Position Size * Funding Rate

Example

• Position Type: Short
• Position Size: 20,000 USDT
• Funding Rate: 0.03%

Funding fee:

20,000 * 0.03% = 6 USDT

If Shorts are the paying side:

• 6 USDT will be deducted from the position margin at the funding interval settlement time

If Shorts are the receiving side:

• 6 USDT will be added to the position margin

Because funding payments directly increase or decrease position margin, they also affect:

• Margin Ratio
• Maintenance Margin distance & liquidation

Margin

Margin is the collateral used to open and maintain a leveraged position.

Single-Asset Margin Model (USDT-M)

TTT perpetual markets operate under a Single-Asset Margin (USDT-M) model, where USDT is used as the primary collateral and settlement asset across all perpetual markets. Margin allocation, unrealized and realized PnL, funding payments, trading fees, and final settlement are all denominated and settled in USDT, while contracts themselves are quoted based on the underlying asset price, such as BTC in BTCUSDT. This allows traders to gain exposure to underlying market price movements while keeping collateral, settlement, and account balance management unified under a single stablecoin-based margin system.

Initial Margin Calculation

Formula:

Initial Margin = Position size/leverage

Example

• Position Size: 5,000 USDT
• Leverage: 25x

Required margin:

5000/25=200 USDT

Position Size Calculation

Position Size represents the total leveraged value of your trade.

Formula:

Position\ Size = Margin \times Leverage

Example

• Margin: 200 USDT
• Leverage: 25x

Calculation:

200 \times 25 = 5{,}000\ USDT

Result:

• Total Position Size = 5,000 USDT

This means:

• You are controlling a 5,000 USDT position
• While only using 200 USDT of your own balance as margin

Maintenance Margin Ratio

Maintenance Margin Ratio (MMR) is the minimum margin percentage required to keep a position open.

It is one of the core risk-control mechanisms in perpetual futures trading and determines when a position becomes eligible for liquidation.

Each perpetual contract has its own Maintenance Margin Ratio depending on:

• Market volatility
• Liquidity
• Risk level of the asset

Higher-risk contracts usually have higher maintenance margin requirements.

Liquidation happens when the remaining margin becomes insufficient to support the position.

TTT uses Mark Price for liquidation calculations to reduce unfair liquidations during volatility spikes.

Higher MMR:

• Higher liquidation risk
• Closer liquidation price

Lower MMR:

• More liquidation distance
• Lower liquidation risk

How to check Maintenance Margin Ratio

You can check the Maintenance Margin Ratio from the contract information section of each perpetual market.

Maintenance Margin Ratio Example

Maintenance Margin 

Maintenance Margin=Position Size×Maintenance Margin Ratio(MMR)

Example

Position:

• Position Size: 20,000 USDT
• Maintenance Margin Ratio: 10%

Calculation:

20,000×0.10=2000USDT

Result:

• Required Maintenance Margin = 2000 USDT

The position must always maintain at least 2,000 USDT margin to avoid liquidation. If the remaining margin falls to this level, liquidation is triggered automatically using the Mark Price.

How Liquidation Works

Liquidation occurs when the remaining margin of a position falls below the required Maintenance Margin.

If remaining margin drops below the required level, the position is automatically liquidated using the Mark Price.

Example

• Position Size: 10,000 USDT
• Initial Margin: 500 USDT
• Maintenance Margin: 50 USDT

If losses reduce remaining margin below 50 USDT:

• Liquidation triggers automatically
• The position is closed by the system to prevent further losses.

Liquidation Price Formula

Approximate Long liquidation price formula:

Liquidation Price=Entry Price×(1−Leverage1​+MMR)

Approximate Short liquidation price formula:

Liquidation Price=Entry Price×(1+Leverage1​−MMR)

Where:

• Leverage = selected leverage
• MMR = Maintenance Margin Ratio

Higher leverage:

• Brings liquidation price closer

Lower leverage:

• Moves liquidation price farther away

Adding Margin Effect

Adding more margin increases distance from maintenance margin requirement.

This:

• Reduces liquidation risk
• Moves liquidation price farther away
• Improves margin ratio

Adding Margin Example

Current position:

• Position Size: 2,000 USDT
• Margin: 100 USDT

Current leverage:

2,000/100 = 20X

You add:

• +100 USDT margin

New total margin:

• 200 USDT

New leverage:

2,000/200= 10X

Result:

• Position size stays the same: 2,000 USDT
• Effective leverage decreases from 20x → 10x
• Lower leverage moves the liquidation price farther away(Liq price formula)
• The position becomes safer against volatility