diff --git a/.vscode/launch.json b/.vscode/launch.json
index 4845b192a4b..c6347cb24fe 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -283,12 +283,12 @@
             "type": "go",
             "request": "launch",
             "mode": "test",
-            "program": "${workspaceFolder}/x/txfees",
+            "program": "${workspaceFolder}/x/txfees/keeper/txfee_filters",
             "args": [
                 "-test.timeout",
                 "30m",
                 "-test.run",
-                "TestKeeperTestSuite/TestYourName",
+                "TestTxFeeFilter/TestIsArbTxLooseAuthz_SwapMsg",
                 "-test.v"
             ],
         },
diff --git a/x/txfees/keeper/txfee_filters/arb_tx.go b/x/txfees/keeper/txfee_filters/arb_tx.go
index 00928422e70..07babba4478 100644
--- a/x/txfees/keeper/txfee_filters/arb_tx.go
+++ b/x/txfees/keeper/txfee_filters/arb_tx.go
@@ -26,6 +26,25 @@ type AffiliateSwapMsg struct {
 	Swap `json:"swap"`
 }
 
+type InputCoin struct {
+	Denom  string `json:"denom"`
+	Amount string `json:"amount"`
+}
+
+type Slippage struct {
+	MinOutputAmount string `json:"min_output_amount"`
+}
+
+type ContractSwap struct {
+	InputCoin   InputCoin `json:"input_coin"`
+	OutputDenom string    `json:"output_denom"`
+	Slippage    Slippage  `json:"slippage"`
+}
+
+type ContractSwapMsg struct {
+	ContractSwap `json:"swap"`
+}
+
 // TokenDenomsOnPath implements types.SwapMsgRoute.
 func (m AffiliateSwapMsg) TokenDenomsOnPath() []string {
 	denoms := make([]string, 0, len(m.Routes)+1)
@@ -108,6 +127,15 @@ func isArbTxLooseAuthz(msg sdk.Msg, swapInDenom string, lpTypesSeen map[gammtype
 
 		// Check that the contract message is an affiliate swap message
 		if ok := isAffiliateSwapMsg(contractMessage); !ok {
+
+			if ok := isSwapContractMsg(contractMessage); !ok {
+				return swapInDenom, false
+			}
+
+			return swapInDenom, false
+		}
+
+		if ok := isSwapContractMsg(contractMessage); !ok {
 			return swapInDenom, false
 		}
 
@@ -195,3 +223,33 @@ func isAffiliateSwapMsg(msg []byte) bool {
 
 	return true
 }
+
+type Coin struct {
+	Denom  string `json:"denom"`
+	Amount string `json:"amount"`
+}
+
+func isSwapContractMsg(msg []byte) bool {
+	// Check that the contract message is a valid JSON object
+	jsonObject := make(map[string]interface{})
+	err := json.Unmarshal(msg, &jsonObject)
+	if err != nil {
+		return false
+	}
+
+	// check the main key is "swap"
+	swap, ok := jsonObject["swap"].(map[string]interface{})
+	if !ok {
+		return false
+	}
+
+	if routes, ok := swap["input_coin"].([]interface{}); !ok || len(routes) == 0 {
+		return false
+	}
+
+	if tokenOutMinAmount, ok := swap["output_denom"].(map[string]interface{}); !ok || len(tokenOutMinAmount) == 0 {
+		return false
+	}
+
+	return true
+}
diff --git a/x/txfees/keeper/txfee_filters/arb_tx_test.go b/x/txfees/keeper/txfee_filters/arb_tx_test.go
index 1c7f24e822a..4268944b702 100644
--- a/x/txfees/keeper/txfee_filters/arb_tx_test.go
+++ b/x/txfees/keeper/txfee_filters/arb_tx_test.go
@@ -65,6 +65,36 @@ func (suite *KeeperTestSuite) TestIsArbTxLooseAuthz_AffiliateSwapMsg() {
 	suite.Require().True(isArb)
 }
 
+// Tests that the arb filter is enabled on swap msg.
+func (suite *KeeperTestSuite) TestIsArbTxLooseAuthz_SwapMsg() {
+	contractSwapMsg := &txfee_filters.ContractSwapMsg{
+		ContractSwap: txfee_filters.ContractSwap{
+			InputCoin: txfee_filters.InputCoin{
+				Amount: "2775854",
+				Denom:  "ibc/D1542AA8762DB13087D8364F3EA6509FD6F009A34F00426AF9E4F9FA85CBBF1F",
+			},
+			OutputDenom: "ibc/D1542AA8762DB13087D8364F3EA6509FD6F009A34F00426AF9E4F9FA85CBBF1F",
+			Slippage: txfee_filters.Slippage{
+				MinOutputAmount: "2775854",
+			},
+		},
+	}
+
+	msgBz, err := json.Marshal(contractSwapMsg)
+	suite.Require().NoError(err)
+
+	// https://celatone.osmosis.zone/osmosis-1/txs/8D20755D4E009CB72C763963A76886BCCCC5C2EBFC3F57266332710216A0D10D
+	executeMsg := &wasmtypes.MsgExecuteContract{
+		Contract: "osmo1etpha3a65tds0hmn3wfjeag6wgxgrkuwg2zh94cf5hapz7mz04dq6c25s5",
+		Sender:   "osmo1dldrxz5p8uezxz3qstpv92de7wgfp7hvr72dcm",
+		Funds:    sdk.NewCoins(sdk.NewCoin("ibc/498A0751C798A0D9A389AA3691123DADA57DAA4FE165D5C75894505B876BA6E4", sdk.NewInt(217084399))),
+		Msg:      msgBz,
+	}
+
+	_, isArb := txfee_filters.IsArbTxLooseAuthz(executeMsg, executeMsg.Funds[0].Denom, map[types.LiquidityChangeType]bool{})
+	suite.Require().True(isArb)
+}
+
 func (suite *KeeperTestSuite) TestIsArbTxLooseAuthz_OtherMsg() {
 	otherMsg := []byte(`{"update_feed": {}}`)