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The ConstantsLib library defines important constant values used across the Morpho Vault V2 system.

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Constants

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WAD

uint256 constant WAD = 1e18;
The WAD (Wad) constant represents 1 with 18 decimal places (1e18). This is the standard unit for fixed-point arithmetic in the vault system. Value: 1000000000000000000 (10^18)

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DOMAIN_TYPEHASH

bytes32 constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(uint256 chainId,address verifyingContract)");
The EIP-712 domain separator typehash used for signature verification. Value: keccak256("EIP712Domain(uint256 chainId,address verifyingContract)")

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PERMIT_TYPEHASH

bytes32 constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
The EIP-712 permit typehash used for gasless approvals. Value: keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)")

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MAX_MAX_RATE

uint256 constant MAX_MAX_RATE = 200e16 / uint256(365 days);
The maximum allowed maximum rate, equivalent to 200% APR. Value: 200e16 / 365 days (approximately 6.34195839675291 × 10^13 per second)

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MAX_PERFORMANCE_FEE

uint256 constant MAX_PERFORMANCE_FEE = 0.5e18;
The maximum performance fee that can be charged, set at 50%. Value: 0.5e18 (500000000000000000)

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MAX_MANAGEMENT_FEE

uint256 constant MAX_MANAGEMENT_FEE = 0.05e18 / uint256(365 days);
The maximum management fee that can be charged, equivalent to 5% per year. Value: 0.05e18 / 365 days (approximately 1.585489599188229 × 10^12 per second)

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MAX_FORCE_DEALLOCATE_PENALTY

uint256 constant MAX_FORCE_DEALLOCATE_PENALTY = 0.02e18;
The maximum penalty that can be applied when force deallocating, set at 2%. Value: 0.02e18 (20000000000000000)

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Source code

// SPDX-License-Identifier: GPL-2.0-or-later
// Copyright (c) 2025 Morpho Association
pragma solidity ^0.8.0;

uint256 constant WAD = 1e18;
bytes32 constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(uint256 chainId,address verifyingContract)");
bytes32 constant PERMIT_TYPEHASH =
    keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
uint256 constant MAX_MAX_RATE = 200e16 / uint256(365 days); // 200% APR
uint256 constant MAX_PERFORMANCE_FEE = 0.5e18; // 50%
uint256 constant MAX_MANAGEMENT_FEE = 0.05e18 / uint256(365 days); // 5%
uint256 constant MAX_FORCE_DEALLOCATE_PENALTY = 0.02e18; // 2%