diff --git a/contracts/sei-tester/src/contract.rs b/contracts/sei-tester/src/contract.rs
index 9e3c863..567b31a 100644
--- a/contracts/sei-tester/src/contract.rs
+++ b/contracts/sei-tester/src/contract.rs
@@ -9,8 +9,8 @@ use crate::msg::{
 };
 use sei_cosmwasm::{
     DexTwapsResponse, EpochResponse, ExchangeRatesResponse, GetOrderByIdResponse,
-    GetOrdersResponse, OracleTwapsResponse, Order, OrderType, PositionDirection, SeiMsg,
-    SeiQuerier, SeiQueryWrapper,
+    GetOrdersResponse, OracleTwapsResponse, Order, OrderSimulationResponse, OrderType,
+    PositionDirection, SeiMsg, SeiQuerier, SeiQueryWrapper,
 };
 
 #[entry_point]
@@ -212,6 +212,7 @@ pub fn query(deps: Deps<SeiQueryWrapper>, _env: Env, msg: QueryMsg) -> StdResult
             contract_address,
             lookback_seconds,
         } => to_binary(&query_dex_twaps(deps, contract_address, lookback_seconds)?),
+        QueryMsg::OrderSimulation { order } => to_binary(&query_order_simulation(deps, order)?),
         QueryMsg::Epoch {} => to_binary(&query_epoch(deps)?),
         QueryMsg::GetOrders {
             contract_address,
@@ -261,6 +262,16 @@ pub fn query_dex_twaps(
     Ok(res)
 }
 
+pub fn query_order_simulation(
+    deps: Deps<SeiQueryWrapper>,
+    order: Order,
+) -> StdResult<OrderSimulationResponse> {
+    let querier = SeiQuerier::new(&deps.querier);
+    let res: OrderSimulationResponse = querier.query_order_simulation(order)?;
+
+    Ok(res)
+}
+
 pub fn query_epoch(deps: Deps<SeiQueryWrapper>) -> StdResult<EpochResponse> {
     let querier = SeiQuerier::new(&deps.querier);
     let res: EpochResponse = querier.query_epoch()?;
diff --git a/contracts/sei-tester/src/msg.rs b/contracts/sei-tester/src/msg.rs
index c86dfb7..bb107ce 100644
--- a/contracts/sei-tester/src/msg.rs
+++ b/contracts/sei-tester/src/msg.rs
@@ -97,6 +97,9 @@ pub enum QueryMsg {
         contract_address: String,
         lookback_seconds: u64,
     },
+    OrderSimulation {
+        order: Order,
+    },
     Epoch {},
     GetOrders {
         contract_address: String,
diff --git a/packages/sei-cosmwasm/src/lib.rs b/packages/sei-cosmwasm/src/lib.rs
index ee15498..a1e265a 100644
--- a/packages/sei-cosmwasm/src/lib.rs
+++ b/packages/sei-cosmwasm/src/lib.rs
@@ -12,7 +12,7 @@ pub use proto_structs::{
 pub use querier::SeiQuerier;
 pub use query::{
     DexTwapsResponse, EpochResponse, ExchangeRatesResponse, GetOrderByIdResponse,
-    GetOrdersResponse, OracleTwapsResponse, SeiQuery, SeiQueryWrapper,
+    GetOrdersResponse, OracleTwapsResponse, OrderSimulationResponse, SeiQuery, SeiQueryWrapper,
 };
 pub use route::SeiRoute;
 pub use sei_types::{Order, OrderResponse, OrderType, PositionDirection};
diff --git a/packages/sei-cosmwasm/src/querier.rs b/packages/sei-cosmwasm/src/querier.rs
index f685e49..a7d8661 100644
--- a/packages/sei-cosmwasm/src/querier.rs
+++ b/packages/sei-cosmwasm/src/querier.rs
@@ -2,9 +2,10 @@ use cosmwasm_std::{Addr, QuerierWrapper, StdResult};
 
 use crate::query::{
     DexTwapsResponse, EpochResponse, ExchangeRatesResponse, GetOrderByIdResponse,
-    GetOrdersResponse, OracleTwapsResponse, SeiQuery, SeiQueryWrapper,
+    GetOrdersResponse, OracleTwapsResponse, OrderSimulationResponse, SeiQuery, SeiQueryWrapper,
 };
 use crate::route::SeiRoute;
+use crate::Order;
 
 /// This is a helper wrapper to easily use our custom queries
 pub struct SeiQuerier<'a> {
@@ -16,6 +17,9 @@ impl<'a> SeiQuerier<'a> {
         SeiQuerier { querier }
     }
 
+    /*
+    query oracle module
+    */
     pub fn query_exchange_rates(&self) -> StdResult<ExchangeRatesResponse> {
         let request = SeiQueryWrapper {
             route: SeiRoute::Oracle,
@@ -36,6 +40,9 @@ impl<'a> SeiQuerier<'a> {
         self.querier.query(&request)
     }
 
+    /*
+    query dex module
+    */
     pub fn query_dex_twaps(
         &self,
         lookback_seconds: u64,
@@ -53,12 +60,13 @@ impl<'a> SeiQuerier<'a> {
         self.querier.query(&request)
     }
 
-    pub fn query_epoch(&self) -> StdResult<EpochResponse> {
+    pub fn query_order_simulation(&self, order: Order) -> StdResult<OrderSimulationResponse> {
         let request = SeiQueryWrapper {
-            route: SeiRoute::Epoch,
-            query_data: SeiQuery::Epoch {},
+            route: SeiRoute::Dex,
+            query_data: SeiQuery::OrderSimulation { order },
         }
         .into();
+
         self.querier.query(&request)
     }
 
@@ -97,4 +105,16 @@ impl<'a> SeiQuerier<'a> {
         .into();
         self.querier.query(&request)
     }
+
+    /*
+    query epoch module
+    */
+    pub fn query_epoch(&self) -> StdResult<EpochResponse> {
+        let request = SeiQueryWrapper {
+            route: SeiRoute::Epoch,
+            query_data: SeiQuery::Epoch {},
+        }
+        .into();
+        self.querier.query(&request)
+    }
 }
diff --git a/packages/sei-cosmwasm/src/query.rs b/packages/sei-cosmwasm/src/query.rs
index 29cb4f5..3db14bc 100644
--- a/packages/sei-cosmwasm/src/query.rs
+++ b/packages/sei-cosmwasm/src/query.rs
@@ -5,6 +5,7 @@ use serde::{Deserialize, Serialize};
 use crate::proto_structs::{DenomOracleExchangeRatePair, DexTwap, Epoch, OracleTwap};
 use crate::route::SeiRoute;
 use crate::sei_types::OrderResponse;
+use crate::Order;
 
 /// SeiQueryWrapper is an override of QueryRequest::Custom to access Sei-specific modules
 #[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
@@ -40,6 +41,9 @@ pub enum SeiQuery {
         asset_denom: String,
         id: u64,
     },
+    OrderSimulation {
+        order: Order,
+    },
 }
 
 /// ExchangeRatesResponse is data format returned from OracleRequest::ExchangeRates query
@@ -77,3 +81,9 @@ pub struct GetOrdersResponse {
 pub struct GetOrderByIdResponse {
     pub order: OrderResponse,
 }
+
+/// OrderSimulationResponse is data format returned from OrderSimulation query
+#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
+pub struct OrderSimulationResponse {
+    pub executed_quantity: String,
+}