diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fc3f3dc8526..4c0f1f48767e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -54,6 +54,8 @@ Every module contains its own CHANGELOG.md. Please refer to the module you are i
 
 ### Bug Fixes
 
+* (x/auth/tx) [#23492](https://github.com/cosmos/cosmos-sdk/pull/23492) Add missing timeoutTimestamp in newBuilderFromDecodedTx.
+
 ### API Breaking Changes
 
 * (x/params) [#22995](https://github.com/cosmos/cosmos-sdk/pull/22995) Remove `x/params`.  Migrate to the new params system introduced in `v0.47` as demonstrated [here](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md#xparams).
diff --git a/x/auth/tx/builder.go b/x/auth/tx/builder.go
index d8dcc5edb311..e67fb21b9bbe 100644
--- a/x/auth/tx/builder.go
+++ b/x/auth/tx/builder.go
@@ -63,6 +63,7 @@ func newBuilderFromDecodedTx(
 		codec:                       codec,
 		msgs:                        decoded.Messages,
 		timeoutHeight:               decoded.GetTimeoutHeight(),
+		timeoutTimestamp:            decoded.GetTimeoutTimeStamp(),
 		granter:                     decoded.FeeGranter(),
 		payer:                       payer,
 		unordered:                   decoded.GetUnordered(),
diff --git a/x/auth/tx/builder_test.go b/x/auth/tx/builder_test.go
index 9667f42d7ba2..ac9733dd8dfe 100644
--- a/x/auth/tx/builder_test.go
+++ b/x/auth/tx/builder_test.go
@@ -6,10 +6,32 @@ import (
 	any "github.com/cosmos/gogoproto/types/any"
 	"github.com/stretchr/testify/require"
 
+	"github.com/cosmos/cosmos-sdk/client"
+	codectestutil "github.com/cosmos/cosmos-sdk/codec/testutil"
+	"github.com/cosmos/cosmos-sdk/testutil"
 	"github.com/cosmos/cosmos-sdk/types/tx"
+	authclient "github.com/cosmos/cosmos-sdk/x/auth/client"
 )
 
 func TestIntoV2SignerInfo(t *testing.T) {
 	require.NotNil(t, intoV2SignerInfo([]*tx.SignerInfo{{}}))
 	require.NotNil(t, intoV2SignerInfo([]*tx.SignerInfo{{PublicKey: &any.Any{}}}))
 }
+
+func TestBuilderWithTimeoutTimestamp(t *testing.T) {
+	cdc := codectestutil.CodecOptions{}.NewCodec()
+	interfaceRegistry := cdc.InterfaceRegistry()
+	signingCtx := interfaceRegistry.SigningContext()
+	txConfig := NewTxConfig(cdc, signingCtx.AddressCodec(), signingCtx.ValidatorAddressCodec(), DefaultSignModes)
+	txBuilder := txConfig.NewTxBuilder()
+	encodedTx, err := txConfig.TxJSONEncoder()(txBuilder.GetTx())
+	require.NoError(t, err)
+	file := testutil.WriteToNewTempFile(t, string(encodedTx))
+	clientCtx := client.Context{InterfaceRegistry: interfaceRegistry, TxConfig: txConfig}
+	decodedTx, err := authclient.ReadTxFromFile(clientCtx, file.Name())
+	require.NoError(t, err)
+	txBldr, err := txConfig.WrapTxBuilder(decodedTx)
+	require.NoError(t, err)
+	b := txBldr.(*builder)
+	require.False(t, b.timeoutTimestamp.IsZero())
+}