Formulas

This document defines the trading rules and calculation methodology for futures contracts on the exchange1 INR platform. Contracts are matched and risk-managed in USDT internally, while every monetary value is displayed and settled to the user in Indian Rupees using a configured INR Rate.

Applies to all futures contracts offered on the exchange1 India (INR) platform.
Covers both Cross and Isolated margin modes.
Defines order-entry cost checks, fee and funding calculations, and liquidation pricing.
Monetary figures are shown in USDT with the INR equivalent alongside, converted at the INR Rate.

Note: Contract quantity, leverage and all ratios are currency-neutral and match the Global platform. Only monetary quantities (margin, fees, P&L, cost, position value) are converted to INR for display and settlement, using Value (INR) = Value (USDT) × INR Rate, with INR Rate = ₹90.

2. Key Concepts & Account Parameters

The following parameters drive every calculation in this document. Users should understand each before placing an order.

Parameter	Meaning
Available Balance	Free margin in the account available to open new positions.
Leverage	Multiplier applied to margin to determine position size.
Mark Price	Fair price used for P&L and liquidation, independent of last trade.
Opening / Average Price	Entry price of the position.
Contract Direction	+1 for Long, −1 for Short.
Contract Unit / Face Value	Underlying amount represented by one contract.
Quantity	Number of contracts (or token quantity) held.
Fee Rate	Trading commission rate applied to notional value.
Risk Ratio	Maintenance threshold; liquidation triggers when the margin ratio falls below it
INR Rate	Platform conversion factor used to display USDT values in Indian Rupees (₹90 per USDT in this document).

2.1 The INR Rate

Every contract on the INR platform is priced and matched in USDT internally, then displayed to the user in Indian Rupees using a configured conversion factor, the INR Rate. In all worked examples in this document the INR Rate is taken as ₹90 per 1 USDT.

INR conversion Value (INR) = Value (USDT) × INR Rate

Note: The INR Rate is a platform-configured display/settlement factor and may differ from any single external spot rate. Contract quantity, leverage and all ratios are currency-neutral and are therefore identical to the Global platform.

3. Margin Modes

3.1 Cross Margin

In Cross margin mode the entire available account balance backs all open positions. Profit on one position can offset loss on another, and liquidation is assessed at the account level.

Cross Liquidation Condition


        (Available Balance + (Total Floating P&L − Total Required Commission Fees))
        ÷ Total Margin Used for Open Positions < Risk Ratio

Cross Risk Ratio


        Cross Risk Ratio (Account Balance + Total Floating P&L − Total Commission Fees) ÷ Total Used Margin × 100%

3.2 Isolated Margin

In Isolated margin mode each position is backed only by the margin allocated to it. A loss is capped at that position's margin and cannot draw on the rest of the account.

Isolated Liquidation Condition


        (Position Margin + Unrealized P&L − Estimated Closing Fees) ÷ Position Margin < Risk Ratio

Isolated Risk Ratio

 (Margin + Floating P&L − Estimated Closing Fee) ÷ Margin

4. Order Entry & Cost Calculation

When a user submits an order, the platform validates affordability by computing the margin, fees and total cost of the position, then the maximum number of contracts the available balance can support.

4.1 Available Margin After Fee Reservation

Available Margin = Available Balance ÷ (1 + Leverage × Fee Rate)

4.2 Position Value


        Position Value (USDT) = Contract Quantity × Mark Price
        → Position Value (INR) = Position Value (USDT) × INR Rate

4.3 Cost & Fees

Cost


        Cost (USDT) = (Face Value × Quantity × Opening Price ÷ Leverage)
        × (1 + Fee Rate × Leverage)
        → Cost (INR) = Cost (USDT) × INR Rate

Fee


        Fee (INR) = (Opening Price × Quantity × Unit Conversion × Fee Rate) × INR Rate

4.4 Maximum Contracts

Max Contracts = ROUNDDOWN(Available Balance ÷ Total Cost per Contract)

4.5 Worked Example

Using the INR order-entry parameters: Available Margin 260.52, Leverage 150×, Fee Rate 0.05%, Price 66,000, Size 0.004 per contract, INR Rate ₹90.

Step	USDT	INR (× 90)
Available margin after fee reserve = 260.52 ÷ (1 + 150 × 0.0005)	242.34	-
Position size = 66,000 × 0.004 × 1	264.00	23,760
Cost per contract = (0.004 × 66,000 ÷ 150) × (1 + 0.0005 × 150)	1.892	170.28
Fee = 0.004 × 66,000 × 0.0005	0.132	11.88
Total cost per contract	1.892	182.16
Max contracts = ROUNDDOWN(260.52 ÷ total cost)	1	-
Resulting size = 1 × 0.004	0.004	-

5. Complete Calculation Formula Reference

The full set of platform formulas is listed below for reference. Where a value is monetary, both the USDT computation and the INR equivalent are shown.

1. Cross Margin Liquidation Condition


        (Available Balance + (Total Floating P&L − Total Required Commission Fees)) ÷ Total Margin Used for Open Positions < Risk Ratio

Note: Condition is unit-neutral (a ratio). All balances are evaluated in USDT; the INR platform displays the same balances multiplied by the INR Rate, but the ratio itself is unchanged.

2. Isolated Margin Liquidation Condition


        (Position Margin + Unrealized P&L − Estimated Closing Fees) ÷ Position Margin < Risk Ratio

Note: Condition is unit-neutral (a ratio). All balances are evaluated in USDT; the INR platform displays the same balances multiplied by the INR Rate, but the ratio itself is unchanged.

3. Cross Margin Liquidation Price


        Floating P&L (INR) =
        (Mark Price − Average Opening Price) × Token Quantity × Contract Direction
        × Contract Face Value × INR Rate

Note: Position Floating P&L = (Mark − Open) × Qty × Direction × Face Value. Opening Fee = Qty × Open Price × Face Value × Fee Rate. On the INR platform, balances supplied in INR are divided by the INR Rate to return to contract (USDT) terms before solving for price.

4.Cross Margin Risk Ratio


        (Account Balance + Total Floating P&L − Total Commission Fees) ÷ Total Used Margin × 100%

5.Isolated Margin Risk Ratio


        (Margin + Floating P&L − Estimated Closing Fee) ÷ Margin

6. Commission (Opening) Fee


        Fee (USDT) = Margin × Leverage × Commission Rate   →   Fee (INR) = Fee (USDT) × INR Rate

7. Overnight Fee


        Overnight Fee (INR) = (Margin × Overnight Rate ÷ Leverage) × INR Rate

8. Funding Fee


        Funding Fee (INR) = (Position Value × Funding Rate) × INR Rate

9. Position Value


        Position Value (USDT) = Contract Quantity × Mark Price   →   Position Value (INR) = Position Value (USDT) × INR Rate

10. Used Margin


        Used Margin (USDT) = Quantity × Contract Unit × Opening Price ÷ Leverage   →   Used Margin (INR) = Used Margin (USDT) × INR Rate

11. Contract Quantity


        Quantity = Margin × Leverage ÷ (Contract Unit × Opening Price)

Note: Quantity is a contract count and is identical on both platforms.

12. Unrealized (Floating) P&L


        Floating P&L (INR) = (Mark Price − Average Opening Price) × Token Quantity × Contract Direction × Contract Face Value × INR Rate

13. Cost


        Cost (USDT) = (Face Value × Quantity × Opening Price ÷ Leverage) × (1 + Fee Rate × Leverage)   →   Cost (INR) = Cost (USDT) × INR Rate

14. Closing P&L Percentage


        Profit/Loss Ratio = Floating P&L ÷ Margin × 100%

Note: A percentage; identical on both platforms.

15. Fee (Maker/Taker)


        Fee (INR) = (Opening Price × Quantity × Unit Conversion × Fee Rate) × INR Rate

16. Estimated Closing Fee


        Estimated Closing Fee (INR) = [Fee Rate × Order Quantity × Contract Face Value × Estimated Execution Price] × INR Rate

17. Realized P&L Reconciliation


        Realized P&L + Closing Fee = Closing P&L (App)

Note: Reconciliation identity; holds in whichever currency the figures are expressed, provided both sides use the same currency.

18. Isolated Margin Liquidation Price


        Liq Price = Opening Price − (((Position Margin ÷ INR Rate) − 0.1 × (Position Margin ÷ INR Rate) − Estimated Closing Fee) ÷ (Quantity × Direction))

Note: The INR form (taken from the Isolated worked sheet) divides the position margin by the INR Rate to convert the margin back into contract terms before solving for the liquidation price. 0.1 is the maintenance (risk) ratio.

19. Isolated Margin Risk Ratio


        (Margin + Floating P&L − Estimated Closing Fee) ÷ Margin

20. Realized P&L


        Realized P&L (INR) = (Closing Price − Opening Price) × Base Size × Direction × INR Rate

6. Liquidation in Detail

6.1 Cross Margin Liquidation Price


        Liq Price = Mark Price − Contract Direction ×
        ((Available Balance ÷ INR Rate) + All Position Floating P&L
        − All Opening Fees − All Position Margin × Risk Ratio)
        ÷ (|Contract Quantity Difference| × Contract Face Value)

Where: Position Floating P&L = (Mark Price − Open Price) × Quantity × Direction × Face Value; and Opening Fee = Quantity × Open Price × Face Value × Fee Rate.

Worked example — Cross

BTCUSDT long, 1 contract of size 0.001, entry 67,070, mark 67,200.3, leverage 75×, available 16.85 USDT, risk ratio 10%. The liquidation price is a price level and is displayed identically; only the underlying balances are shown in INR.

Step	USDT	INR (× 90)
Symbol / Direction	BTCUSDT / Long (+1)	-
Open Price	67,070	-
Mark Price	67,200.3	-
Available Balance	16.85	1516.50
Risk Ratio	10%	-
Cross Liquidation Price	50,438.4	-

6.2 Isolated Margin Liquidation Price


        Liq Price = Opening Price − (((Position Margin ÷ INR Rate) − 0.1 × (Position Margin ÷ INR Rate) − Estimated Closing Fee) ÷ (Quantity × Direction))

Worked example — Isolated

Isolated long, entry 80,585.8, size 0.001, leverage 120×, maintenance ratio 0.1, fee rate 0.05%, INR Rate ₹90. Fees are shown in both USDT and INR, matching the Isolated worked sheet.

Parameter	USDT	INR (× 90)
Open Price	80,585.8	-
Position Margin = 80,585.8 × 0.001 ÷ 120	0.6715	60.44
Open Fee = 80,585.8 × 0.001 × 0.05%	0.0403	3.626
Est. Close Fee = 0.001 × 80,585.8 × 0.05%	0.0403	3.626
Risk Ratio	10%	-
Maintenance Ratio	0.10	-
Isolated Liquidation Price (price level — same on both)	80,021.7	-

7. Fees & Funding

Fee Type	Formula
Commission	Fee (USDT) = Margin × Leverage × Commission Rate → Fee (INR) = Fee (USDT) × INR Rate
Overnight Fee	Overnight Fee (INR) = (Margin × Overnight Rate ÷ Leverage) × INR Rate
Funding Fee	Funding Fee (INR) = (Position Value × Funding Rate) × INR Rate
Estimated Closing Fee	Estimated Closing Fee (INR) = (Quantity × Latest Price × Contract Face Value × Fee Rate) × INR Rate

Note: Estimated closing fees are indicative and computed against the latest or estimated execution price. Actual fees are charged on the real fill price at close.

8. Risk Disclaimer

Futures trading involves substantial risk and can result in the loss of your entire margin. Leverage magnifies both gains and losses. INR values are derived from the underlying USDT computation using the platform INR Rate and may move as that rate is updated.

The formulas and worked examples in this document are provided for transparency and education. Actual fills, fees, mark prices, the applicable INR Rate and liquidation events are determined by the live matching and risk engines at the moment of execution.