diff --git a/pkg/wallet/account.go b/pkg/wallet/account.go
index 946ea4335..4abc659f1 100644
--- a/pkg/wallet/account.go
+++ b/pkg/wallet/account.go
@@ -136,6 +136,12 @@ func (a *Account) SignTx(net netmode.Magic, t *transaction.Transaction) error {
 	return nil
 }
 
+// CanSign returns true when account is not locked and has a decrypted private
+// key inside, so it's ready to create real signatures.
+func (a *Account) CanSign() bool {
+	return !a.Locked && a.privateKey != nil
+}
+
 // GetVerificationScript returns account's verification script.
 func (a *Account) GetVerificationScript() []byte {
 	if a.Contract != nil {
diff --git a/pkg/wallet/account_test.go b/pkg/wallet/account_test.go
index eeaa9a3f8..2d0a798df 100644
--- a/pkg/wallet/account_test.go
+++ b/pkg/wallet/account_test.go
@@ -86,6 +86,7 @@ func TestContract_MarshalJSON(t *testing.T) {
 func TestContractSignTx(t *testing.T) {
 	acc, err := NewAccount()
 	require.NoError(t, err)
+	require.True(t, acc.CanSign())
 
 	accNoContr := *acc
 	accNoContr.Contract = nil
@@ -100,6 +101,7 @@ func TestContractSignTx(t *testing.T) {
 
 	acc2, err := NewAccount()
 	require.NoError(t, err)
+	require.True(t, acc2.CanSign())
 
 	require.Error(t, acc2.SignTx(0, tx))
 
@@ -135,10 +137,12 @@ func TestContractSignTx(t *testing.T) {
 	require.Equal(t, 66, len(tx.Scripts[0].InvocationScript))
 
 	acc2.Locked = true
+	require.False(t, acc2.CanSign())
 	require.Error(t, acc2.SignTx(0, tx)) // Locked account.
 
 	acc2.Locked = false
 	acc2.privateKey = nil
+	require.False(t, acc2.CanSign())
 	require.Error(t, acc2.SignTx(0, tx)) // No private key.
 
 	tx.Scripts = append(tx.Scripts, transaction.Witness{