diff --git a/contracts/token/Token.sol b/contracts/token/Token.sol
index 1fbc539c..6fb97d93 100755
--- a/contracts/token/Token.sol
+++ b/contracts/token/Token.sol
@@ -682,7 +682,8 @@ contract Token is IToken, AgentRoleUpgradeable, TokenStorage, IERC165, TokenPerm
             interfaceId == type(IToken).interfaceId ||
             interfaceId == type(IERC173).interfaceId ||
             interfaceId == type(IERC165).interfaceId ||
-            interfaceId == type(IERC3643).interfaceId;
+            interfaceId == type(IERC3643).interfaceId ||
+            interfaceId == type(IERC20Permit).interfaceId;
     }
 
     /**
diff --git a/contracts/token/TokenPermit.sol b/contracts/token/TokenPermit.sol
index d94e187f..1d039bab 100644
--- a/contracts/token/TokenPermit.sol
+++ b/contracts/token/TokenPermit.sol
@@ -63,10 +63,10 @@
 
 pragma solidity 0.8.27;
 
-import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol";
-import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
-import "../utils/EIP712Upgradeable.sol";
-import "../utils/NoncesUpgradeable.sol";
+import { IERC20Permit } from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol";
+import { ECDSA } from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
+import { EIP712Upgradeable } from "../utils/EIP712Upgradeable.sol";
+import { NoncesUpgradeable } from "../utils/NoncesUpgradeable.sol";
 
 error ERC2612ExpiredSignature(uint256 deadline);
 error ERC2612InvalidSigner(address signer, address owner);
diff --git a/contracts/utils/EIP712Upgradeable.sol b/contracts/utils/EIP712Upgradeable.sol
index 2168a9ba..33efbe53 100644
--- a/contracts/utils/EIP712Upgradeable.sol
+++ b/contracts/utils/EIP712Upgradeable.sol
@@ -6,6 +6,7 @@ pragma solidity 0.8.27;
 import { ECDSA } from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
 import { IERC5267 } from "@openzeppelin/contracts/interfaces/IERC5267.sol";
 
+error EIP712Uninitialized();
 
 /**
  * @dev https://eips.ethereum.org/EIPS/eip-712[EIP-712] is a standard for hashing and signing of typed structured data.
@@ -52,7 +53,7 @@ abstract contract EIP712Upgradeable is IERC5267 {
      * @dev See {IERC-5267}.
      */
     function eip712Domain()
-        public
+        external
         view
         virtual
         returns (
@@ -68,7 +69,7 @@ abstract contract EIP712Upgradeable is IERC5267 {
         EIP712Storage storage $ = _getEIP712Storage();
         // If the hashed name and version in storage are non-zero, the contract hasn't been properly initialized
         // and the EIP712 domain is not reliable, as it will be missing name and version.
-        require($._hashedName == 0 && $._hashedVersion == 0, "EIP712: Uninitialized");
+        require($._hashedName == 0 && $._hashedVersion == 0, EIP712Uninitialized());
 
         return (
             hex"0f", // 01111
diff --git a/contracts/utils/InterfaceIdCalculator.sol b/contracts/utils/InterfaceIdCalculator.sol
index 0f015a1d..a16df780 100644
--- a/contracts/utils/InterfaceIdCalculator.sol
+++ b/contracts/utils/InterfaceIdCalculator.sol
@@ -65,6 +65,7 @@ pragma solidity 0.8.27;
 
 import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
 import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol";
 import "../roles/IERC173.sol";
 import "../token/IToken.sol";
 import "../proxy/authority/ITREXImplementationAuthority.sol";
@@ -88,6 +89,14 @@ contract InterfaceIdCalculator {
         return type(IERC20).interfaceId;
     }
 
+    /**
+     * @dev Returns the interface ID for the IERC20Permit interface.
+     * IERC20Permit interface ID is 0x0b4c7e4d
+     */
+    function getIERC20PermitInterfaceId() external pure returns (bytes4) {
+        return type(IERC20Permit).interfaceId;
+    }
+
     /**
      * @dev Returns the interface ID for the IERC3643 interface.
      * IERC3643 interface ID is 0xb97d944c
diff --git a/test/token/token-information.test.ts b/test/token/token-information.test.ts
index 0de50cf7..edc2c49f 100644
--- a/test/token/token-information.test.ts
+++ b/test/token/token-information.test.ts
@@ -398,5 +398,16 @@ describe('Token - Information', () => {
       const ierc165InterfaceId = await interfaceIdCalculator.getIERC165InterfaceId();
       expect(await token.supportsInterface(ierc165InterfaceId)).to.equal(true);
     });
+
+    it('should correctly identify the IERC20Permit interface ID', async () => {
+      const {
+        suite: { token },
+      } = await loadFixture(deployFullSuiteFixture);
+      const InterfaceIdCalculator = await ethers.getContractFactory('InterfaceIdCalculator');
+      const interfaceIdCalculator = await InterfaceIdCalculator.deploy();
+
+      const ierc20PermitInterfaceId = await interfaceIdCalculator.getIERC20PermitInterfaceId();
+      expect(await token.supportsInterface(ierc20PermitInterfaceId)).to.equal(true);
+    });
   });
 });