Fee Collection

Fee Collection

Overview

Doxa Protocol implements a simple fee structure for swaps and protocol operations.

Fee Structure

Trading Fees

• Standard Swaps: 0.3% (30 basis points)
• Stable Pairs: 0.05% (5 basis points)
• Exotic Pairs: 1% (100 basis points)

Protocol Fees

• Minting DUSD: No additional fee (1:1 with ckUSDC)
• Staking: No deposit/withdrawal fees
• Token Transfers: Standard ICRC-1 fees

Fee Collection Process

Swap Fees

// Fees automatically collected during swaps
let swapAmount = 1_000_000; // 1 DUSD
let feeAmount = swapAmount * 30 / 10000; // 0.3% fee
let outputAmount = calculateSwapOutput(swapAmount - feeAmount);

Staking Fees

// No fees for staking operations
// Rewards distributed from protocol treasury
let stakingReward = calculateReward(stakedAmount, duration, apy);

Fee Distribution

1. Protocol Treasury: 60% of collected fees
2. Liquidity Providers: 30% of collected fees
3. Staking Rewards: 10% of collected fees

Integration

Calculate Trading Fees

public func calculateTradingFee(amount: Nat, feeRate: Nat) : Nat {
    amount * feeRate / 10000
};

// Example usage
let tradeFee = calculateTradingFee(1_000_000, 30); // 0.3% of 1 DUSD

Fee Queries

// Get current fee rates
public query func getFeeRates() : async {
    standardSwap: Nat;
    stablePair: Nat;
    exoticPair: Nat;
} {
    {
        standardSwap = 30; // 0.3%
        stablePair = 5;    // 0.05%
        exoticPair = 100;  // 1%
    }
};

Error Handling

type FeeError = variant {
    #InsufficientAmount;
    #InvalidFeeRate;
    #CollectionFailed;
};

Best Practices

1. Fee Awareness: Always account for fees in trade calculations
2. Slippage Tolerance: Set appropriate slippage to cover fees
3. Route Optimization: Choose optimal trading routes to minimize fees
4. Balance Management: Maintain sufficient balance to cover fees