diff --git a/pallets/admin-utils/tests/mock.rs b/pallets/admin-utils/tests/mock.rs
index 688d666be..24475a8c6 100644
--- a/pallets/admin-utils/tests/mock.rs
+++ b/pallets/admin-utils/tests/mock.rs
@@ -81,6 +81,7 @@ parameter_types! {
     pub const InitialMinDelegateTake: u16 = 5_898; // 9%;
     pub const InitialDefaultChildKeyTake: u16 = 0; // Allow 0 %
     pub const InitialMinChildKeyTake: u16 = 0; // Allow 0 %
+    pub const InitialMaxChildKeyTake: u16 = 11_796; // 18 %;
     pub const InitialWeightsVersionKey: u16 = 0;
     pub const InitialServingRateLimit: u64 = 0; // No limit.
     pub const InitialTxRateLimit: u64 = 0; // Disable rate limit for testing
@@ -153,6 +154,7 @@ impl pallet_subtensor::Config for Test {
     type InitialMinDelegateTake = InitialMinDelegateTake;
     type InitialDefaultChildKeyTake = InitialDefaultChildKeyTake;
     type InitialMinChildKeyTake = InitialMinChildKeyTake;
+    type InitialMaxChildKeyTake = InitialMaxChildKeyTake;
     type InitialWeightsVersionKey = InitialWeightsVersionKey;
     type InitialMaxDifficulty = InitialMaxDifficulty;
     type InitialMinDifficulty = InitialMinDifficulty;
diff --git a/pallets/subtensor/src/macros/config.rs b/pallets/subtensor/src/macros/config.rs
index 2a6d8db00..5b2d0f25e 100644
--- a/pallets/subtensor/src/macros/config.rs
+++ b/pallets/subtensor/src/macros/config.rs
@@ -122,6 +122,9 @@ mod config {
         /// Initial minimum childkey take.
         #[pallet::constant]
         type InitialMinChildKeyTake: Get<u16>;
+        /// Initial maximum childkey take.
+        #[pallet::constant]
+        type InitialMaxChildKeyTake: Get<u16>;
         /// Initial weights version key.
         #[pallet::constant]
         type InitialWeightsVersionKey: Get<u64>;
diff --git a/pallets/subtensor/tests/mock.rs b/pallets/subtensor/tests/mock.rs
index 022849c56..6785bdb02 100644
--- a/pallets/subtensor/tests/mock.rs
+++ b/pallets/subtensor/tests/mock.rs
@@ -133,8 +133,9 @@ parameter_types! {
     pub const InitialFoundationDistribution: u64 = 0;
     pub const InitialDefaultDelegateTake: u16 = 11_796; // 18%, same as in production
     pub const InitialMinDelegateTake: u16 = 5_898; // 9%;
-    pub const InitialDefaultChildKeyTake: u16 = 11_796; // 18%, same as in production
+    pub const InitialDefaultChildKeyTake: u16 = 0 ;// 0 %
     pub const InitialMinChildKeyTake: u16 = 0; // 0 %;
+    pub const InitialMaxChildKeyTake: u16 = 11_796; // 18 %;
     pub const InitialWeightsVersionKey: u16 = 0;
     pub const InitialServingRateLimit: u64 = 0; // No limit.
     pub const InitialTxRateLimit: u64 = 0; // Disable rate limit for testing
@@ -172,7 +173,7 @@ parameter_types! {
     pub const InitialAlphaLow: u16 = 45875; // Represents 0.7 as per the production default
     pub const InitialLiquidAlphaOn: bool = false; // Default value for LiquidAlphaOn
     pub const InitialHotkeyEmissionTempo: u64 = 0; // Defaults to draining every block.
-    pub const InitialNetworkMaxStake: u64 = 500_000_000_000_000; // 500,000 TAO
+    pub const InitialNetworkMaxStake: u64 = u64::MAX; // Maximum possible value for u64
 
 }
 
@@ -367,6 +368,7 @@ impl pallet_subtensor::Config for Test {
     type InitialMinDelegateTake = InitialMinDelegateTake;
     type InitialDefaultChildKeyTake = InitialDefaultChildKeyTake;
     type InitialMinChildKeyTake = InitialMinChildKeyTake;
+    type InitialMaxChildKeyTake = InitialMaxChildKeyTake;
     type InitialTxChildKeyTakeRateLimit = InitialTxChildKeyTakeRateLimit;
     type InitialWeightsVersionKey = InitialWeightsVersionKey;
     type InitialMaxDifficulty = InitialMaxDifficulty;
diff --git a/runtime/src/lib.rs b/runtime/src/lib.rs
index 166a686e4..ab88db026 100644
--- a/runtime/src/lib.rs
+++ b/runtime/src/lib.rs
@@ -910,6 +910,7 @@ parameter_types! {
     pub const SubtensorInitialMinDelegateTake: u16 = 0; // Allow 0% delegate take
     pub const SubtensorInitialDefaultChildKeyTake: u16 = 0; // Allow 0% childkey take
     pub const SubtensorInitialMinChildKeyTake: u16 = 0; // 0 %
+    pub const SubtensorInitialMaxChildKeyTake: u16 = 11_796; // 18 %
     pub const SubtensorInitialWeightsVersionKey: u64 = 0;
     pub const SubtensorInitialMinDifficulty: u64 = 10_000_000;
     pub const SubtensorInitialMaxDifficulty: u64 = u64::MAX / 4;
@@ -981,6 +982,7 @@ impl pallet_subtensor::Config for Runtime {
     type InitialTxRateLimit = SubtensorInitialTxRateLimit;
     type InitialTxDelegateTakeRateLimit = SubtensorInitialTxDelegateTakeRateLimit;
     type InitialTxChildKeyTakeRateLimit = SubtensorInitialTxChildKeyTakeRateLimit;
+    type InitialMaxChildKeyTake = SubtensorInitialMaxChildKeyTake;
     type InitialRAORecycledForRegistration = SubtensorInitialRAORecycledForRegistration;
     type InitialSenateRequiredStakePercentage = SubtensorInitialSenateRequiredStakePercentage;
     type InitialNetworkImmunityPeriod = SubtensorInitialNetworkImmunity;