diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe247044e3c3..71c88b545407 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+### Bug Fixes
+
+  * (x/auth) [\#8287](https://github.com/cosmos/cosmos-sdk/pull/8287) Fix `tx sign --signature-only` to return correct sequence value in signature.
+
 ## [v0.40.0](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.40.0) - 2021-01-08
 
 v0.40.0, known as the Stargate release of the Cosmos SDK, is one of the largest releases
diff --git a/x/auth/client/cli/cli_test.go b/x/auth/client/cli/cli_test.go
index 6a6a9b1d559e..fdd558b7971f 100644
--- a/x/auth/client/cli/cli_test.go
+++ b/x/auth/client/cli/cli_test.go
@@ -15,7 +15,6 @@ import (
 
 	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/client/flags"
-	"github.com/cosmos/cosmos-sdk/codec/types"
 	"github.com/cosmos/cosmos-sdk/crypto/hd"
 	"github.com/cosmos/cosmos-sdk/crypto/keyring"
 	kmultisig "github.com/cosmos/cosmos-sdk/crypto/keys/multisig"
@@ -145,11 +144,21 @@ func (s *IntegrationTestSuite) TestCLISign() {
 	valInfo, err := val1.ClientCtx.Keyring.Key(val1.Moniker)
 	require.NoError(err)
 
+	// query account info
+	queryResJSON, err := authtest.QueryAccountExec(val1.ClientCtx, val1.Address)
+	require.NoError(err)
+	var account authtypes.AccountI
+	require.NoError(val1.ClientCtx.JSONMarshaler.UnmarshalInterfaceJSON(queryResJSON.Bytes(), &account))
+
 	/****  test signature-only  ****/
 	res, err := authtest.TxSignExec(val1.ClientCtx, val1.Address, fileUnsigned.Name(), chainFlag,
 		sigOnlyFlag)
 	require.NoError(err)
 	checkSignatures(require, txCfg, res.Bytes(), valInfo.GetPubKey())
+	sigs, err := txCfg.UnmarshalSignatureJSON(res.Bytes())
+	require.NoError(err)
+	require.Equal(1, len(sigs))
+	require.Equal(account.GetSequence(), sigs[0].Sequence)
 
 	/****  test full output  ****/
 	res, err = authtest.TxSignExec(val1.ClientCtx, val1.Address, fileUnsigned.Name(), chainFlag)
@@ -814,19 +823,17 @@ func (s *IntegrationTestSuite) TestGetAccountCmd() {
 
 	testCases := []struct {
 		name      string
-		args      []string
+		address   sdk.AccAddress
 		expectErr bool
 	}{
 		{
 			"invalid address",
-			[]string{addr1.String(),
-				fmt.Sprintf("--%s=json", tmcli.OutputFlag)},
+			addr1,
 			true,
 		},
 		{
 			"valid address",
-			[]string{val.Address.String(),
-				fmt.Sprintf("--%s=json", tmcli.OutputFlag)},
+			val.Address,
 			false,
 		},
 	}
@@ -834,18 +841,15 @@ func (s *IntegrationTestSuite) TestGetAccountCmd() {
 	for _, tc := range testCases {
 		tc := tc
 		s.Run(tc.name, func() {
-			cmd := authcli.GetAccountCmd()
 			clientCtx := val.ClientCtx
 
-			out, err := clitestutil.ExecTestCLICmd(clientCtx, cmd, tc.args)
+			out, err := authtest.QueryAccountExec(clientCtx, tc.address)
 			if tc.expectErr {
 				s.Require().Error(err)
 				s.Require().NotEqual("internal", err.Error())
 			} else {
-				var any types.Any
-				s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalJSON(out.Bytes(), &any))
 				var acc authtypes.AccountI
-				s.Require().NoError(val.ClientCtx.InterfaceRegistry.UnpackAny(&any, &acc))
+				s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalInterfaceJSON(out.Bytes(), &acc))
 				s.Require().Equal(val.Address, acc.GetAddress())
 			}
 		})
diff --git a/x/auth/client/testutil/helpers.go b/x/auth/client/testutil/helpers.go
index b46079cc6d95..e4f31727768e 100644
--- a/x/auth/client/testutil/helpers.go
+++ b/x/auth/client/testutil/helpers.go
@@ -23,12 +23,10 @@ func TxSignExec(clientCtx client.Context, from fmt.Stringer, filename string, ex
 		filename,
 	}
 
-	args = append(args, extraArgs...)
-
 	cmd := cli.GetSignCommand()
 	tmcli.PrepareBaseCmd(cmd, "", "")
 
-	return clitestutil.ExecTestCLICmd(clientCtx, cmd, args)
+	return clitestutil.ExecTestCLICmd(clientCtx, cmd, append(args, extraArgs...))
 }
 
 func TxBroadcastExec(clientCtx client.Context, filename string, extraArgs ...string) (testutil.BufferWriter, error) {
@@ -36,9 +34,7 @@ func TxBroadcastExec(clientCtx client.Context, filename string, extraArgs ...str
 		filename,
 	}
 
-	args = append(args, extraArgs...)
-
-	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetBroadcastCommand(), args)
+	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetBroadcastCommand(), append(args, extraArgs...))
 }
 
 func TxEncodeExec(clientCtx client.Context, filename string, extraArgs ...string) (testutil.BufferWriter, error) {
@@ -47,9 +43,7 @@ func TxEncodeExec(clientCtx client.Context, filename string, extraArgs ...string
 		filename,
 	}
 
-	args = append(args, extraArgs...)
-
-	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetEncodeCommand(), args)
+	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetEncodeCommand(), append(args, extraArgs...))
 }
 
 func TxValidateSignaturesExec(clientCtx client.Context, filename string) (testutil.BufferWriter, error) {
@@ -70,9 +64,7 @@ func TxMultiSignExec(clientCtx client.Context, from string, filename string, ext
 		from,
 	}
 
-	args = append(args, extraArgs...)
-
-	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetMultiSignCommand(), args)
+	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetMultiSignCommand(), append(args, extraArgs...))
 }
 
 func TxSignBatchExec(clientCtx client.Context, from fmt.Stringer, filename string, extraArgs ...string) (testutil.BufferWriter, error) {
@@ -82,9 +74,7 @@ func TxSignBatchExec(clientCtx client.Context, from fmt.Stringer, filename strin
 		filename,
 	}
 
-	args = append(args, extraArgs...)
-
-	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetSignBatchCommand(), args)
+	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetSignBatchCommand(), append(args, extraArgs...))
 }
 
 func TxDecodeExec(clientCtx client.Context, encodedTx string, extraArgs ...string) (testutil.BufferWriter, error) {
@@ -93,9 +83,13 @@ func TxDecodeExec(clientCtx client.Context, encodedTx string, extraArgs ...strin
 		encodedTx,
 	}
 
-	args = append(args, extraArgs...)
+	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetDecodeCommand(), append(args, extraArgs...))
+}
+
+func QueryAccountExec(clientCtx client.Context, address fmt.Stringer, extraArgs ...string) (testutil.BufferWriter, error) {
+	args := []string{address.String(), fmt.Sprintf("--%s=json", tmcli.OutputFlag)}
 
-	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetDecodeCommand(), args)
+	return clitestutil.ExecTestCLICmd(clientCtx, cli.GetAccountCmd(), append(args, extraArgs...))
 }
 
 // DONTCOVER
diff --git a/x/auth/tx/sigs.go b/x/auth/tx/sigs.go
index 5916a42c3342..e2d5d63a6015 100644
--- a/x/auth/tx/sigs.go
+++ b/x/auth/tx/sigs.go
@@ -118,6 +118,7 @@ func (g config) MarshalSignatureJSON(sigs []signing.SignatureV2) ([]byte, error)
 		descs[i] = &signing.SignatureDescriptor{
 			PublicKey: any,
 			Data:      descData,
+			Sequence:  sig.Sequence,
 		}
 	}