diff --git a/programs/mango-v4/src/error.rs b/programs/mango-v4/src/error.rs
index 7ac7ccacd..c1f564104 100644
--- a/programs/mango-v4/src/error.rs
+++ b/programs/mango-v4/src/error.rs
@@ -81,6 +81,8 @@ pub enum MangoError {
     HasLiquidatablePerpBasePosition,
     #[msg("has liquidatable trusted perp pnl")]
     HasLiquidatableTrustedPerpPnl,
+    #[msg("account is frozen")]
+    AccountIsFrozen,
 }
 
 impl MangoError {
diff --git a/programs/mango-v4/src/instructions/account_close.rs b/programs/mango-v4/src/instructions/account_close.rs
index 0d59565bb..2f823d9e0 100644
--- a/programs/mango-v4/src/instructions/account_close.rs
+++ b/programs/mango-v4/src/instructions/account_close.rs
@@ -15,6 +15,7 @@ pub struct AccountClose<'info> {
         mut,
         has_one = group,
         has_one = owner,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen,
         close = sol_destination
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
diff --git a/programs/mango-v4/src/instructions/account_edit.rs b/programs/mango-v4/src/instructions/account_edit.rs
index 70530b7e0..08c74ae6e 100644
--- a/programs/mango-v4/src/instructions/account_edit.rs
+++ b/programs/mango-v4/src/instructions/account_edit.rs
@@ -14,7 +14,8 @@ pub struct AccountEdit<'info> {
     #[account(
         mut,
         has_one = group,
-        has_one = owner
+        has_one = owner,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     pub owner: Signer<'info>,
diff --git a/programs/mango-v4/src/instructions/account_expand.rs b/programs/mango-v4/src/instructions/account_expand.rs
index bff654074..f151a5737 100644
--- a/programs/mango-v4/src/instructions/account_expand.rs
+++ b/programs/mango-v4/src/instructions/account_expand.rs
@@ -14,7 +14,8 @@ pub struct AccountExpand<'info> {
     #[account(
         mut,
         has_one = group,
-        has_one = owner
+        has_one = owner,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     pub owner: Signer<'info>,
diff --git a/programs/mango-v4/src/instructions/account_toggle_freeze.rs b/programs/mango-v4/src/instructions/account_toggle_freeze.rs
new file mode 100644
index 000000000..a7e44218b
--- /dev/null
+++ b/programs/mango-v4/src/instructions/account_toggle_freeze.rs
@@ -0,0 +1,35 @@
+use anchor_lang::prelude::*;
+
+use crate::error::MangoError;
+use crate::state::*;
+
+#[derive(Accounts)]
+pub struct AccountToggleFreeze<'info> {
+    #[account(
+        constraint = group.load()?.is_operational() @ MangoError::GroupIsHalted,
+        constraint = group.load()?.admin == admin.key() || group.load()?.security_admin == admin.key(),
+    )]
+    pub group: AccountLoader<'info, Group>,
+
+    #[account(
+        mut,
+        has_one = group,
+    )]
+    pub account: AccountLoader<'info, MangoAccountFixed>,
+
+    pub admin: Signer<'info>,
+}
+
+// Freezing an account, prevents all instructions involving account (also settling and liquidation), except
+// perp consume events and force cancellation of orders
+pub fn account_toggle_freeze(ctx: Context<AccountToggleFreeze>, freeze: bool) -> Result<()> {
+    let mut account = ctx.accounts.account.load_full_mut()?;
+    if freeze {
+        let now_ts: u64 = Clock::get()?.unix_timestamp.try_into().unwrap();
+        account.fixed.frozen_until = now_ts + 7 * 24 * 60 * 60;
+    } else {
+        account.fixed.frozen_until = 0;
+    }
+
+    Ok(())
+}
diff --git a/programs/mango-v4/src/instructions/flash_loan.rs b/programs/mango-v4/src/instructions/flash_loan.rs
index 9701cf40f..445be2097 100644
--- a/programs/mango-v4/src/instructions/flash_loan.rs
+++ b/programs/mango-v4/src/instructions/flash_loan.rs
@@ -31,6 +31,9 @@ pub mod jupiter_mainnet_3 {
 /// 4. the mango group
 #[derive(Accounts)]
 pub struct FlashLoanBegin<'info> {
+    #[account(
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     // owner is checked at #1
     pub owner: Signer<'info>,
@@ -53,7 +56,10 @@ pub struct FlashLoanBegin<'info> {
 /// 4. the mango group
 #[derive(Accounts)]
 pub struct FlashLoanEnd<'info> {
-    #[account(mut)]
+    #[account(
+        mut,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     // owner is checked at #1
     pub owner: Signer<'info>,
diff --git a/programs/mango-v4/src/instructions/health_region.rs b/programs/mango-v4/src/instructions/health_region.rs
index 312b75d15..65318ae5e 100644
--- a/programs/mango-v4/src/instructions/health_region.rs
+++ b/programs/mango-v4/src/instructions/health_region.rs
@@ -18,7 +18,10 @@ pub struct HealthRegionBegin<'info> {
     #[account(address = tx_instructions::ID)]
     pub instructions: UncheckedAccount<'info>,
 
-    #[account(mut)]
+    #[account(
+        mut,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
 }
 
@@ -27,7 +30,10 @@ pub struct HealthRegionBegin<'info> {
 /// remaining_accounts: health accounts for account
 #[derive(Accounts)]
 pub struct HealthRegionEnd<'info> {
-    #[account(mut)]
+    #[account(
+        mut,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
 }
 
diff --git a/programs/mango-v4/src/instructions/mod.rs b/programs/mango-v4/src/instructions/mod.rs
index 521e64aed..43bc8420e 100644
--- a/programs/mango-v4/src/instructions/mod.rs
+++ b/programs/mango-v4/src/instructions/mod.rs
@@ -2,6 +2,7 @@ pub use account_close::*;
 pub use account_create::*;
 pub use account_edit::*;
 pub use account_expand::*;
+pub use account_toggle_freeze::*;
 pub use alt_extend::*;
 pub use alt_set::*;
 pub use benchmark::*;
@@ -56,6 +57,7 @@ mod account_close;
 mod account_create;
 mod account_edit;
 mod account_expand;
+mod account_toggle_freeze;
 mod alt_extend;
 mod alt_set;
 mod benchmark;
diff --git a/programs/mango-v4/src/instructions/perp_cancel_all_orders.rs b/programs/mango-v4/src/instructions/perp_cancel_all_orders.rs
index 94dddb705..269fa534b 100644
--- a/programs/mango-v4/src/instructions/perp_cancel_all_orders.rs
+++ b/programs/mango-v4/src/instructions/perp_cancel_all_orders.rs
@@ -10,7 +10,11 @@ pub struct PerpCancelAllOrders<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     pub owner: Signer<'info>,
 
diff --git a/programs/mango-v4/src/instructions/perp_cancel_all_orders_by_side.rs b/programs/mango-v4/src/instructions/perp_cancel_all_orders_by_side.rs
index a3f702f5a..9cca64546 100644
--- a/programs/mango-v4/src/instructions/perp_cancel_all_orders_by_side.rs
+++ b/programs/mango-v4/src/instructions/perp_cancel_all_orders_by_side.rs
@@ -12,7 +12,11 @@ pub struct PerpCancelAllOrdersBySide<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     pub owner: Signer<'info>,
 
diff --git a/programs/mango-v4/src/instructions/perp_cancel_order.rs b/programs/mango-v4/src/instructions/perp_cancel_order.rs
index ab4f99b59..192792250 100644
--- a/programs/mango-v4/src/instructions/perp_cancel_order.rs
+++ b/programs/mango-v4/src/instructions/perp_cancel_order.rs
@@ -10,7 +10,11 @@ pub struct PerpCancelOrder<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     pub owner: Signer<'info>,
 
diff --git a/programs/mango-v4/src/instructions/perp_cancel_order_by_client_order_id.rs b/programs/mango-v4/src/instructions/perp_cancel_order_by_client_order_id.rs
index 27e55eb22..f2f66d11f 100644
--- a/programs/mango-v4/src/instructions/perp_cancel_order_by_client_order_id.rs
+++ b/programs/mango-v4/src/instructions/perp_cancel_order_by_client_order_id.rs
@@ -10,7 +10,11 @@ pub struct PerpCancelOrderByClientOrderId<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     pub owner: Signer<'info>,
 
diff --git a/programs/mango-v4/src/instructions/perp_deactivate_position.rs b/programs/mango-v4/src/instructions/perp_deactivate_position.rs
index d30d0f66c..89f282b9d 100644
--- a/programs/mango-v4/src/instructions/perp_deactivate_position.rs
+++ b/programs/mango-v4/src/instructions/perp_deactivate_position.rs
@@ -12,7 +12,8 @@ pub struct PerpDeactivatePosition<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
         // owner is checked at #1
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
diff --git a/programs/mango-v4/src/instructions/perp_liq_bankruptcy.rs b/programs/mango-v4/src/instructions/perp_liq_bankruptcy.rs
index f1524f42e..99fa6bb23 100644
--- a/programs/mango-v4/src/instructions/perp_liq_bankruptcy.rs
+++ b/programs/mango-v4/src/instructions/perp_liq_bankruptcy.rs
@@ -26,7 +26,8 @@ pub struct PerpLiqBankruptcy<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = liqor.load()?.is_operational() @ MangoError::AccountIsFrozen
         // liqor_owner is checked at #1
     )]
     pub liqor: AccountLoader<'info, MangoAccountFixed>,
@@ -34,7 +35,8 @@ pub struct PerpLiqBankruptcy<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = liqee.load()?.is_operational() @ MangoError::AccountIsFrozen
     )]
     pub liqee: AccountLoader<'info, MangoAccountFixed>,
 
diff --git a/programs/mango-v4/src/instructions/perp_liq_base_position.rs b/programs/mango-v4/src/instructions/perp_liq_base_position.rs
index aa5bc66ba..7ecc5997b 100644
--- a/programs/mango-v4/src/instructions/perp_liq_base_position.rs
+++ b/programs/mango-v4/src/instructions/perp_liq_base_position.rs
@@ -24,13 +24,18 @@ pub struct PerpLiqBasePosition<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = liqor.load()?.is_operational() @ MangoError::AccountIsFrozen
         // liqor_owner is checked at #1
     )]
     pub liqor: AccountLoader<'info, MangoAccountFixed>,
     pub liqor_owner: Signer<'info>,
 
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = liqee.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub liqee: AccountLoader<'info, MangoAccountFixed>,
 }
 
diff --git a/programs/mango-v4/src/instructions/perp_liq_force_cancel_orders.rs b/programs/mango-v4/src/instructions/perp_liq_force_cancel_orders.rs
index d284ee67c..6d9785304 100644
--- a/programs/mango-v4/src/instructions/perp_liq_force_cancel_orders.rs
+++ b/programs/mango-v4/src/instructions/perp_liq_force_cancel_orders.rs
@@ -12,7 +12,11 @@ pub struct PerpLiqForceCancelOrders<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group)]
+    // Allow force cancel even if account is frozen
+    #[account(
+        mut,
+        has_one = group
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
 
     #[account(
diff --git a/programs/mango-v4/src/instructions/perp_liq_quote_and_bankruptcy.rs b/programs/mango-v4/src/instructions/perp_liq_quote_and_bankruptcy.rs
index 546c269dd..1b8ac546c 100644
--- a/programs/mango-v4/src/instructions/perp_liq_quote_and_bankruptcy.rs
+++ b/programs/mango-v4/src/instructions/perp_liq_quote_and_bankruptcy.rs
@@ -20,13 +20,18 @@ pub struct PerpLiqQuoteAndBankruptcy<'info> {
     #[account(
         mut,
         has_one = group,
+        constraint = liqor.load()?.is_operational() @ MangoError::AccountIsFrozen,
         // liqor_owner is checked at #1
     )]
     pub liqor: AccountLoader<'info, MangoAccountFixed>,
     pub liqor_owner: Signer<'info>,
 
     // This account MUST have a loss
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = liqee.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub liqee: AccountLoader<'info, MangoAccountFixed>,
 
     #[account(mut, has_one = group, has_one = oracle)]
diff --git a/programs/mango-v4/src/instructions/perp_place_order.rs b/programs/mango-v4/src/instructions/perp_place_order.rs
index 9af01690b..a96ba98d6 100644
--- a/programs/mango-v4/src/instructions/perp_place_order.rs
+++ b/programs/mango-v4/src/instructions/perp_place_order.rs
@@ -16,7 +16,11 @@ pub struct PerpPlaceOrder<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     pub owner: Signer<'info>,
 
diff --git a/programs/mango-v4/src/instructions/perp_settle_fees.rs b/programs/mango-v4/src/instructions/perp_settle_fees.rs
index 576582876..b5e267ef4 100644
--- a/programs/mango-v4/src/instructions/perp_settle_fees.rs
+++ b/programs/mango-v4/src/instructions/perp_settle_fees.rs
@@ -21,7 +21,11 @@ pub struct PerpSettleFees<'info> {
     pub perp_market: AccountLoader<'info, PerpMarket>,
 
     // This account MUST have a loss
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
 
     /// CHECK: Oracle can have different account types, constrained by address in perp_market
diff --git a/programs/mango-v4/src/instructions/perp_settle_pnl.rs b/programs/mango-v4/src/instructions/perp_settle_pnl.rs
index 2d1381afe..270729216 100644
--- a/programs/mango-v4/src/instructions/perp_settle_pnl.rs
+++ b/programs/mango-v4/src/instructions/perp_settle_pnl.rs
@@ -19,6 +19,7 @@ pub struct PerpSettlePnl<'info> {
     #[account(
         mut,
         has_one = group,
+        constraint = settler.load()?.is_operational() @ MangoError::AccountIsFrozen
         // settler_owner is checked at #1
     )]
     pub settler: AccountLoader<'info, MangoAccountFixed>,
@@ -28,10 +29,17 @@ pub struct PerpSettlePnl<'info> {
     pub perp_market: AccountLoader<'info, PerpMarket>,
 
     // This account MUST be profitable
-    #[account(mut, has_one = group)]
+    #[account(mut,
+        has_one = group,
+        constraint = account_a.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account_a: AccountLoader<'info, MangoAccountFixed>,
     // This account MUST have a loss
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = account_b.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account_b: AccountLoader<'info, MangoAccountFixed>,
 
     /// CHECK: Oracle can have different account types, constrained by address in perp_market
diff --git a/programs/mango-v4/src/instructions/serum3_cancel_all_orders.rs b/programs/mango-v4/src/instructions/serum3_cancel_all_orders.rs
index 58546b256..17e66bd1b 100644
--- a/programs/mango-v4/src/instructions/serum3_cancel_all_orders.rs
+++ b/programs/mango-v4/src/instructions/serum3_cancel_all_orders.rs
@@ -14,7 +14,8 @@ pub struct Serum3CancelAllOrders<'info> {
     pub group: AccountLoader<'info, Group>,
 
     #[account(
-        has_one = group
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
         // owner is checked at #1
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
diff --git a/programs/mango-v4/src/instructions/serum3_cancel_order.rs b/programs/mango-v4/src/instructions/serum3_cancel_order.rs
index 53529cd40..6ec1d41d7 100644
--- a/programs/mango-v4/src/instructions/serum3_cancel_order.rs
+++ b/programs/mango-v4/src/instructions/serum3_cancel_order.rs
@@ -20,7 +20,8 @@ pub struct Serum3CancelOrder<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
         // owner is checked at #1
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
diff --git a/programs/mango-v4/src/instructions/serum3_close_open_orders.rs b/programs/mango-v4/src/instructions/serum3_close_open_orders.rs
index 4c7190658..e01f462ba 100644
--- a/programs/mango-v4/src/instructions/serum3_close_open_orders.rs
+++ b/programs/mango-v4/src/instructions/serum3_close_open_orders.rs
@@ -12,7 +12,8 @@ pub struct Serum3CloseOpenOrders<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
         // owner is checked at #1
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
diff --git a/programs/mango-v4/src/instructions/serum3_create_open_orders.rs b/programs/mango-v4/src/instructions/serum3_create_open_orders.rs
index be4a49b43..74def64b2 100644
--- a/programs/mango-v4/src/instructions/serum3_create_open_orders.rs
+++ b/programs/mango-v4/src/instructions/serum3_create_open_orders.rs
@@ -12,7 +12,8 @@ pub struct Serum3CreateOpenOrders<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
         // owner is checked at #1
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
diff --git a/programs/mango-v4/src/instructions/serum3_liq_force_cancel_orders.rs b/programs/mango-v4/src/instructions/serum3_liq_force_cancel_orders.rs
index ff8f8cca2..744ad64c6 100644
--- a/programs/mango-v4/src/instructions/serum3_liq_force_cancel_orders.rs
+++ b/programs/mango-v4/src/instructions/serum3_liq_force_cancel_orders.rs
@@ -19,7 +19,11 @@ pub struct Serum3LiqForceCancelOrders<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group)]
+    // Allow force cancel even if account is frozen
+    #[account(
+        mut,
+        has_one = group
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
 
     #[account(mut)]
diff --git a/programs/mango-v4/src/instructions/serum3_place_order.rs b/programs/mango-v4/src/instructions/serum3_place_order.rs
index 2f279d102..33106c5a7 100644
--- a/programs/mango-v4/src/instructions/serum3_place_order.rs
+++ b/programs/mango-v4/src/instructions/serum3_place_order.rs
@@ -142,7 +142,8 @@ pub struct Serum3PlaceOrder<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
         // owner is checked at #1
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
diff --git a/programs/mango-v4/src/instructions/serum3_settle_funds.rs b/programs/mango-v4/src/instructions/serum3_settle_funds.rs
index 81fcfc9a0..cdffcd6e8 100644
--- a/programs/mango-v4/src/instructions/serum3_settle_funds.rs
+++ b/programs/mango-v4/src/instructions/serum3_settle_funds.rs
@@ -20,7 +20,8 @@ pub struct Serum3SettleFunds<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
         // owner is checked at #1
     )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
diff --git a/programs/mango-v4/src/instructions/token_deposit.rs b/programs/mango-v4/src/instructions/token_deposit.rs
index 5382bc027..6afa21b0d 100644
--- a/programs/mango-v4/src/instructions/token_deposit.rs
+++ b/programs/mango-v4/src/instructions/token_deposit.rs
@@ -20,7 +20,11 @@ pub struct TokenDepositIntoExisting<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group)]
+    #[account(
+        mut,
+        has_one = group,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
 
     #[account(
@@ -53,7 +57,12 @@ pub struct TokenDeposit<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group, has_one = owner)]
+    #[account(
+        mut,
+        has_one = group,
+        has_one = owner,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     pub owner: Signer<'info>,
 
diff --git a/programs/mango-v4/src/instructions/token_liq_bankruptcy.rs b/programs/mango-v4/src/instructions/token_liq_bankruptcy.rs
index 3f62e07c8..a60b61b36 100644
--- a/programs/mango-v4/src/instructions/token_liq_bankruptcy.rs
+++ b/programs/mango-v4/src/instructions/token_liq_bankruptcy.rs
@@ -28,7 +28,8 @@ pub struct TokenLiqBankruptcy<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = liqor.load()?.is_operational() @ MangoError::AccountIsFrozen
         // liqor_owner is checked at #1
     )]
     pub liqor: AccountLoader<'info, MangoAccountFixed>,
@@ -36,7 +37,8 @@ pub struct TokenLiqBankruptcy<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = liqee.load()?.is_operational() @ MangoError::AccountIsFrozen
     )]
     pub liqee: AccountLoader<'info, MangoAccountFixed>,
 
diff --git a/programs/mango-v4/src/instructions/token_liq_with_token.rs b/programs/mango-v4/src/instructions/token_liq_with_token.rs
index 9af24dbf1..4230bcf34 100644
--- a/programs/mango-v4/src/instructions/token_liq_with_token.rs
+++ b/programs/mango-v4/src/instructions/token_liq_with_token.rs
@@ -20,7 +20,8 @@ pub struct TokenLiqWithToken<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = liqor.load()?.is_operational() @ MangoError::AccountIsFrozen
         // liqor_owner is checked at #1
     )]
     pub liqor: AccountLoader<'info, MangoAccountFixed>,
@@ -28,7 +29,8 @@ pub struct TokenLiqWithToken<'info> {
 
     #[account(
         mut,
-        has_one = group
+        has_one = group,
+        constraint = liqee.load()?.is_operational() @ MangoError::AccountIsFrozen
     )]
     pub liqee: AccountLoader<'info, MangoAccountFixed>,
 }
diff --git a/programs/mango-v4/src/instructions/token_withdraw.rs b/programs/mango-v4/src/instructions/token_withdraw.rs
index b86b98dfd..41c421dec 100644
--- a/programs/mango-v4/src/instructions/token_withdraw.rs
+++ b/programs/mango-v4/src/instructions/token_withdraw.rs
@@ -20,7 +20,12 @@ pub struct TokenWithdraw<'info> {
     )]
     pub group: AccountLoader<'info, Group>,
 
-    #[account(mut, has_one = group, has_one = owner)]
+    #[account(
+        mut,
+        has_one = group,
+        has_one = owner,
+        constraint = account.load()?.is_operational() @ MangoError::AccountIsFrozen
+    )]
     pub account: AccountLoader<'info, MangoAccountFixed>,
     pub owner: Signer<'info>,
 
diff --git a/programs/mango-v4/src/lib.rs b/programs/mango-v4/src/lib.rs
index 89f116ccb..2bf503156 100644
--- a/programs/mango-v4/src/lib.rs
+++ b/programs/mango-v4/src/lib.rs
@@ -222,6 +222,10 @@ pub mod mango_v4 {
         instructions::account_edit(ctx, name_opt, delegate_opt)
     }
 
+    pub fn aaccount_toggle_freeze(ctx: Context<AccountToggleFreeze>, freeze: bool) -> Result<()> {
+        instructions::account_toggle_freeze(ctx, freeze)
+    }
+
     pub fn account_close(ctx: Context<AccountClose>, force_close: bool) -> Result<()> {
         instructions::account_close(ctx, force_close)
     }
diff --git a/programs/mango-v4/src/state/mango_account.rs b/programs/mango-v4/src/state/mango_account.rs
index 1381382f6..f660d91e8 100644
--- a/programs/mango-v4/src/state/mango_account.rs
+++ b/programs/mango-v4/src/state/mango_account.rs
@@ -86,7 +86,9 @@ pub struct MangoAccount {
     /// Init health as calculated during HealthReginBegin, rounded up.
     pub health_region_begin_init_health: i64,
 
-    pub reserved: [u8; 240],
+    pub frozen_until: i64,
+
+    pub reserved: [u8; 232],
 
     // dynamic
     pub header_version: u8,
@@ -120,7 +122,8 @@ impl MangoAccount {
             padding: Default::default(),
             net_deposits: 0,
             health_region_begin_init_health: 0,
-            reserved: [0; 240],
+            frozen_until: 0,
+            reserved: [0; 232],
             header_version: DEFAULT_MANGO_ACCOUNT_VERSION,
             padding3: Default::default(),
             padding4: Default::default(),
@@ -201,9 +204,10 @@ pub struct MangoAccountFixed {
     pub net_deposits: i64,
     pub perp_spot_transfers: i64,
     pub health_region_begin_init_health: i64,
-    pub reserved: [u8; 240],
+    pub frozen_until: u64,
+    pub reserved: [u8; 232],
 }
-const_assert_eq!(size_of::<MangoAccountFixed>(), 32 * 4 + 8 + 3 * 8 + 240);
+const_assert_eq!(size_of::<MangoAccountFixed>(), 32 * 4 + 8 + 3 * 8 + 8 + 232);
 const_assert_eq!(size_of::<MangoAccountFixed>(), 400);
 const_assert_eq!(size_of::<MangoAccountFixed>() % 8, 0);
 
@@ -214,6 +218,11 @@ impl MangoAccountFixed {
             .trim_matches(char::from(0))
     }
 
+    pub fn is_operational(&self) -> bool {
+        let now_ts: u64 = Clock::get().unwrap().unix_timestamp.try_into().unwrap();
+        self.frozen_until < now_ts
+    }
+
     pub fn is_owner_or_delegate(&self, ix_signer: Pubkey) -> bool {
         self.owner == ix_signer || self.delegate == ix_signer
     }
diff --git a/ts/client/src/accounts/group.ts b/ts/client/src/accounts/group.ts
index e5f2883fb..e138c977b 100644
--- a/ts/client/src/accounts/group.ts
+++ b/ts/client/src/accounts/group.ts
@@ -34,6 +34,7 @@ export class Group {
       insuranceVault: PublicKey;
       testing: number;
       version: number;
+      halted: number;
       addressLookupTables: PublicKey[];
     },
   ): Group {
@@ -47,6 +48,7 @@ export class Group {
       obj.insuranceVault,
       obj.testing,
       obj.version,
+      obj.halted,
       obj.addressLookupTables,
       [], // addressLookupTablesList
       new Map(), // banksMapByName
@@ -74,6 +76,7 @@ export class Group {
     public insuranceVault: PublicKey,
     public testing: number,
     public version: number,
+    public halted: number,
     public addressLookupTables: PublicKey[],
     public addressLookupTablesList: AddressLookupTableAccount[],
     public banksMapByName: Map<string, Bank[]>,
@@ -90,6 +93,10 @@ export class Group {
     public vaultAmountsMap: Map<string, BN>,
   ) {}
 
+  public isOperational(): boolean {
+    return this.halted === 0;
+  }
+
   public async reloadAll(client: MangoClient, ids?: Id): Promise<void> {
     // console.time('group.reload');
     await Promise.all([
diff --git a/ts/client/src/accounts/mangoAccount.ts b/ts/client/src/accounts/mangoAccount.ts
index ac87c3bec..6a2e2b3af 100644
--- a/ts/client/src/accounts/mangoAccount.ts
+++ b/ts/client/src/accounts/mangoAccount.ts
@@ -31,6 +31,7 @@ export class MangoAccount {
       netDeposits: BN;
       perpSpotTransfers: BN;
       healthRegionBeginInitHealth: BN;
+      frozenUntil: BN;
       headerVersion: number;
       tokens: unknown;
       serum3: unknown;
@@ -50,6 +51,7 @@ export class MangoAccount {
       obj.netDeposits,
       obj.perpSpotTransfers,
       obj.healthRegionBeginInitHealth,
+      obj.frozenUntil,
       obj.headerVersion,
       obj.tokens as TokenPositionDto[],
       obj.serum3 as Serum3PositionDto[],
@@ -71,6 +73,7 @@ export class MangoAccount {
     public netDeposits: BN,
     public perpSpotTransfers: BN,
     public healthRegionBeginInitHealth: BN,
+    public frozenUntil: BN,
     public headerVersion: number,
     tokens: TokenPositionDto[],
     serum3: Serum3PositionDto[],
@@ -134,6 +137,10 @@ export class MangoAccount {
     );
   }
 
+  public isOperational(): boolean {
+    return this.frozenUntil.lt(new BN(Date.now() / 1000));
+  }
+
   public tokensActive(): TokenPosition[] {
     return this.tokens.filter((token) => token.isActive());
   }
diff --git a/ts/client/src/client.ts b/ts/client/src/client.ts
index e7564c10e..303f8a5ef 100644
--- a/ts/client/src/client.ts
+++ b/ts/client/src/client.ts
@@ -671,6 +671,21 @@ export class MangoClient {
     );
   }
 
+  public async toggleMangoAccountFreeze(
+    group: Group,
+    mangoAccount: MangoAccount,
+    freeze: boolean,
+  ): Promise<TransactionSignature> {
+    return await this.program.methods
+      .aaccountToggleFreeze(freeze)
+      .accounts({
+        group: group.publicKey,
+        account: mangoAccount.publicKey,
+        admin: (this.program.provider as AnchorProvider).wallet.publicKey,
+      })
+      .rpc();
+  }
+
   public async getMangoAccount(
     mangoAccount: MangoAccount | PublicKey,
   ): Promise<MangoAccount> {
diff --git a/ts/client/src/mango_v4.ts b/ts/client/src/mango_v4.ts
index 14803afbe..c7eb0425d 100644
--- a/ts/client/src/mango_v4.ts
+++ b/ts/client/src/mango_v4.ts
@@ -1022,6 +1022,32 @@ export type MangoV4 = {
         }
       ]
     },
+    {
+      "name": "aaccountToggleFreeze",
+      "accounts": [
+        {
+          "name": "group",
+          "isMut": false,
+          "isSigner": false
+        },
+        {
+          "name": "account",
+          "isMut": true,
+          "isSigner": false
+        },
+        {
+          "name": "admin",
+          "isMut": false,
+          "isSigner": true
+        }
+      ],
+      "args": [
+        {
+          "name": "freeze",
+          "type": "bool"
+        }
+      ]
+    },
     {
       "name": "accountClose",
       "accounts": [
@@ -4002,12 +4028,16 @@ export type MangoV4 = {
             ],
             "type": "i64"
           },
+          {
+            "name": "frozenUntil",
+            "type": "i64"
+          },
           {
             "name": "reserved",
             "type": {
               "array": [
                 "u8",
-                240
+                232
               ]
             }
           },
@@ -5425,12 +5455,16 @@ export type MangoV4 = {
             "name": "healthRegionBeginInitHealth",
             "type": "i64"
           },
+          {
+            "name": "frozenUntil",
+            "type": "u64"
+          },
           {
             "name": "reserved",
             "type": {
               "array": [
                 "u8",
-                240
+                232
               ]
             }
           }
@@ -7673,6 +7707,11 @@ export type MangoV4 = {
       "code": 6037,
       "name": "HasLiquidatableTrustedPerpPnl",
       "msg": "has liquidatable trusted perp pnl"
+    },
+    {
+      "code": 6038,
+      "name": "AccountIsFrozen",
+      "msg": "account is frozen"
     }
   ]
 };
@@ -8701,6 +8740,32 @@ export const IDL: MangoV4 = {
         }
       ]
     },
+    {
+      "name": "aaccountToggleFreeze",
+      "accounts": [
+        {
+          "name": "group",
+          "isMut": false,
+          "isSigner": false
+        },
+        {
+          "name": "account",
+          "isMut": true,
+          "isSigner": false
+        },
+        {
+          "name": "admin",
+          "isMut": false,
+          "isSigner": true
+        }
+      ],
+      "args": [
+        {
+          "name": "freeze",
+          "type": "bool"
+        }
+      ]
+    },
     {
       "name": "accountClose",
       "accounts": [
@@ -11681,12 +11746,16 @@ export const IDL: MangoV4 = {
             ],
             "type": "i64"
           },
+          {
+            "name": "frozenUntil",
+            "type": "i64"
+          },
           {
             "name": "reserved",
             "type": {
               "array": [
                 "u8",
-                240
+                232
               ]
             }
           },
@@ -13104,12 +13173,16 @@ export const IDL: MangoV4 = {
             "name": "healthRegionBeginInitHealth",
             "type": "i64"
           },
+          {
+            "name": "frozenUntil",
+            "type": "u64"
+          },
           {
             "name": "reserved",
             "type": {
               "array": [
                 "u8",
-                240
+                232
               ]
             }
           }
@@ -15352,6 +15425,11 @@ export const IDL: MangoV4 = {
       "code": 6037,
       "name": "HasLiquidatableTrustedPerpPnl",
       "msg": "has liquidatable trusted perp pnl"
+    },
+    {
+      "code": 6038,
+      "name": "AccountIsFrozen",
+      "msg": "account is frozen"
     }
   ]
 };