diff --git a/bearer/bearer_test.go b/bearer/bearer_test.go
index 5948bad1..3c0e946e 100644
--- a/bearer/bearer_test.go
+++ b/bearer/bearer_test.go
@@ -107,7 +107,7 @@ func TestToken_ForUser(t *testing.T) {
 	require.Zero(t, m.GetBody())
 
 	// set value
-	usr := *usertest.ID()
+	usr := usertest.ID()
 
 	var usrV2 refs.OwnerID
 	usr.WriteToV2(&usrV2)
@@ -243,11 +243,11 @@ func TestToken_AssertContainer(t *testing.T) {
 
 func TestToken_AssertUser(t *testing.T) {
 	var val bearer.Token
-	usr := *usertest.ID()
+	usr := usertest.ID()
 
 	require.True(t, val.AssertUser(usr))
 
-	val.ForUser(*usertest.ID())
+	val.ForUser(usertest.ID())
 	require.False(t, val.AssertUser(usr))
 
 	val.ForUser(usr)
@@ -332,7 +332,7 @@ func TestToken_ReadFromV2(t *testing.T) {
 	val.WriteToV2(&m2)
 	require.Equal(t, m, m2)
 
-	usr, usr2 := *usertest.ID(), *usertest.ID()
+	usr, usr2 := usertest.ID(), usertest.ID()
 
 	require.True(t, val.AssertUser(usr))
 	require.True(t, val.AssertUser(usr2))
diff --git a/bearer/test/generate.go b/bearer/test/generate.go
index 4f5dd3d4..4fce6a40 100644
--- a/bearer/test/generate.go
+++ b/bearer/test/generate.go
@@ -13,7 +13,7 @@ func Token() (t bearer.Token) {
 	t.SetExp(3)
 	t.SetNbf(2)
 	t.SetIat(1)
-	t.ForUser(*usertest.ID())
+	t.ForUser(usertest.ID())
 	t.SetEACLTable(*eacltest.Table())
 
 	return t
diff --git a/client/accounting.go b/client/accounting.go
index d0aa6539..faf7ddcc 100644
--- a/client/accounting.go
+++ b/client/accounting.go
@@ -19,7 +19,7 @@ import (
 type PrmBalanceGet struct {
 	XHeaders []string
 
-	Account *user.ID
+	Account user.ID
 }
 
 // SetAccount sets identifier of the FrostFS account for which the balance is requested.
@@ -27,11 +27,11 @@ type PrmBalanceGet struct {
 //
 // Deprecated: Use PrmBalanceGet.Account instead.
 func (x *PrmBalanceGet) SetAccount(id user.ID) {
-	x.Account = &id
+	x.Account = id
 }
 
 func (x *PrmBalanceGet) buildRequest(c *Client) (*v2accounting.BalanceRequest, error) {
-	if x.Account == nil {
+	if x.Account.IsEmpty() {
 		return nil, errorAccountNotSet
 	}
 
diff --git a/client/container_list.go b/client/container_list.go
index 0fb91c22..4e88135f 100644
--- a/client/container_list.go
+++ b/client/container_list.go
@@ -19,7 +19,7 @@ import (
 type PrmContainerList struct {
 	XHeaders []string
 
-	Account *user.ID
+	Account user.ID
 }
 
 // SetAccount sets identifier of the FrostFS account to list the containers.
@@ -27,11 +27,11 @@ type PrmContainerList struct {
 //
 // Deprecated: Use PrmContainerList.Account instead.
 func (x *PrmContainerList) SetAccount(id user.ID) {
-	x.Account = &id
+	x.Account = id
 }
 
 func (x *PrmContainerList) buildRequest(c *Client) (*v2container.ListRequest, error) {
-	if x.Account == nil {
+	if x.Account.IsEmpty() {
 		return nil, errorAccountNotSet
 	}
 
diff --git a/container/container_test.go b/container/container_test.go
index f0a22447..d2ecf1d9 100644
--- a/container/container_test.go
+++ b/container/container_test.go
@@ -78,7 +78,7 @@ func TestContainer_Owner(t *testing.T) {
 
 	val = containertest.Container()
 
-	owner := *usertest.ID()
+	owner := usertest.ID()
 
 	val.SetOwner(owner)
 
diff --git a/container/test/generate.go b/container/test/generate.go
index 65b03a80..7ac0c2ae 100644
--- a/container/test/generate.go
+++ b/container/test/generate.go
@@ -16,7 +16,7 @@ func Container() (x container.Container) {
 
 	x.Init()
 	x.SetAttribute("some attribute", "value")
-	x.SetOwner(*owner)
+	x.SetOwner(owner)
 	x.SetBasicACL(BasicACL())
 	x.SetPlacementPolicy(netmaptest.PlacementPolicy())
 
diff --git a/eacl/record.go b/eacl/record.go
index 0762ef34..eeb9646e 100644
--- a/eacl/record.go
+++ b/eacl/record.go
@@ -125,7 +125,7 @@ func (r *Record) AddObjectContainerIDFilter(m Match, id cid.ID) {
 }
 
 // AddObjectOwnerIDFilter adds filter by object owner ID.
-func (r *Record) AddObjectOwnerIDFilter(m Match, id *user.ID) {
+func (r *Record) AddObjectOwnerIDFilter(m Match, id user.ID) {
 	r.addObjectReservedFilter(m, fKeyObjOwnerID, id)
 }
 
diff --git a/object/object.go b/object/object.go
index b21cd697..2685a244 100644
--- a/object/object.go
+++ b/object/object.go
@@ -39,7 +39,7 @@ type RequiredFields struct {
 // Object is expected (but not required) to be blank. Object must not be nil.
 func InitCreation(dst *Object, rf RequiredFields) {
 	dst.SetContainerID(rf.Container)
-	dst.SetOwnerID(&rf.Owner)
+	dst.SetOwnerID(rf.Owner)
 }
 
 // NewFromV2 wraps v2 Object message to Object.
@@ -201,8 +201,8 @@ func (o *Object) SetContainerID(v cid.ID) {
 	})
 }
 
-// OwnerID returns identifier of the object owner.
-func (o *Object) OwnerID() *user.ID {
+// OwnerID returns identifier of the object owner and True.
+func (o *Object) OwnerID() user.ID {
 	var id user.ID
 
 	m := (*object.Object)(o).GetHeader().GetOwnerID()
@@ -210,11 +210,11 @@ func (o *Object) OwnerID() *user.ID {
 		_ = id.ReadFromV2(*m)
 	}
 
-	return &id
+	return id
 }
 
 // SetOwnerID sets identifier of the object owner.
-func (o *Object) SetOwnerID(v *user.ID) {
+func (o *Object) SetOwnerID(v user.ID) {
 	o.setHeaderField(func(h *object.Header) {
 		var m refs.OwnerID
 		v.WriteToV2(&m)
@@ -621,8 +621,10 @@ func (o *Object) UnmarshalJSON(data []byte) error {
 	return formatCheck((*object.Object)(o))
 }
 
-var errOIDNotSet = errors.New("object ID is not set")
-var errCIDNotSet = errors.New("container ID is not set")
+var (
+	errOIDNotSet = errors.New("object ID is not set")
+	errCIDNotSet = errors.New("container ID is not set")
+)
 
 func formatCheck(v2 *object.Object) error {
 	var (
diff --git a/object/object_test.go b/object/object_test.go
index 61b55210..5e423521 100644
--- a/object/object_test.go
+++ b/object/object_test.go
@@ -12,7 +12,7 @@ import (
 func TestInitCreation(t *testing.T) {
 	var o object.Object
 	cnr := cidtest.ID()
-	own := *usertest.ID()
+	own := usertest.ID()
 
 	object.InitCreation(&o, object.RequiredFields{
 		Container: cnr,
@@ -22,5 +22,5 @@ func TestInitCreation(t *testing.T) {
 	cID, set := o.ContainerID()
 	require.True(t, set)
 	require.Equal(t, cnr, cID)
-	require.Equal(t, &own, o.OwnerID())
+	require.Equal(t, own, o.OwnerID())
 }
diff --git a/object/transformer/size_hint_test.go b/object/transformer/size_hint_test.go
index b0965b1f..69a3908b 100644
--- a/object/transformer/size_hint_test.go
+++ b/object/transformer/size_hint_test.go
@@ -34,7 +34,7 @@ func TestTransformerSizeHintCorrectness(t *testing.T) {
 
 	var owner user.ID
 	user.IDFromKey(&owner, pk.PrivateKey.PublicKey)
-	hdr.SetOwnerID(&owner)
+	hdr.SetOwnerID(owner)
 
 	expected := make([]byte, payloadSize)
 	_, _ = rand.Read(expected)
diff --git a/object/transformer/transformer_test.go b/object/transformer/transformer_test.go
index f1a32804..97b2b01d 100644
--- a/object/transformer/transformer_test.go
+++ b/object/transformer/transformer_test.go
@@ -27,7 +27,7 @@ func TestTransformer(t *testing.T) {
 
 	var owner user.ID
 	user.IDFromKey(&owner, pk.PrivateKey.PublicKey)
-	hdr.SetOwnerID(&owner)
+	hdr.SetOwnerID(owner)
 
 	expectedPayload := make([]byte, maxSize*2+maxSize/2)
 	_, _ = rand.Read(expectedPayload)
@@ -41,7 +41,7 @@ func TestTransformer(t *testing.T) {
 		require.True(t, ok)
 		require.Equal(t, cnr, childCnr)
 		require.Equal(t, objectSDK.TypeRegular, tt.objects[i].Type())
-		require.Equal(t, &owner, tt.objects[i].OwnerID())
+		require.Equal(t, owner, tt.objects[i].OwnerID())
 
 		payload := tt.objects[i].Payload()
 		require.EqualValues(t, tt.objects[i].PayloadSize(), len(payload))
diff --git a/pool/pool.go b/pool/pool.go
index a656332e..48f2ee17 100644
--- a/pool/pool.go
+++ b/pool/pool.go
@@ -422,7 +422,7 @@ func (c *clientWrapper) balanceGet(ctx context.Context, prm PrmBalanceGet) (acco
 	}
 
 	cliPrm := sdkClient.PrmBalanceGet{
-		Account: &prm.account,
+		Account: prm.account,
 	}
 
 	start := time.Now()
@@ -508,7 +508,7 @@ func (c *clientWrapper) containerList(ctx context.Context, prm PrmContainerList)
 	}
 
 	cliPrm := sdkClient.PrmContainerList{
-		Account: &prm.ownerID,
+		Account: prm.ownerID,
 	}
 
 	start := time.Now()
diff --git a/session/container_test.go b/session/container_test.go
index d3d46626..d906482a 100644
--- a/session/container_test.go
+++ b/session/container_test.go
@@ -37,7 +37,7 @@ func TestContainerProtocolV2(t *testing.T) {
 	restoreID()
 
 	// Owner
-	usr := *usertest.ID()
+	usr := usertest.ID()
 	var usrV2 refs.OwnerID
 	usr.WriteToV2(&usrV2)
 	restoreUser := func() {
diff --git a/session/object_test.go b/session/object_test.go
index 7d1d77be..1df0f76b 100644
--- a/session/object_test.go
+++ b/session/object_test.go
@@ -53,7 +53,7 @@ func TestObjectProtocolV2(t *testing.T) {
 	restoreID()
 
 	// Owner
-	usr := *usertest.ID()
+	usr := usertest.ID()
 	var usrV2 refs.OwnerID
 	usr.WriteToV2(&usrV2)
 	restoreUser := func() {
diff --git a/user/id.go b/user/id.go
index b77492f7..8535b01c 100644
--- a/user/id.go
+++ b/user/id.go
@@ -12,6 +12,10 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
+const idSize = 25
+
+var zeroSlice = bytes.Repeat([]byte{0}, idSize)
+
 // ID identifies users of the FrostFS system.
 //
 // ID is mutually compatible with git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs.OwnerID
@@ -30,8 +34,8 @@ type ID struct {
 // See also WriteToV2.
 func (x *ID) ReadFromV2(m refs.OwnerID) error {
 	w := m.GetValue()
-	if len(w) != 25 {
-		return fmt.Errorf("invalid length %d, expected 25", len(w))
+	if len(w) != idSize {
+		return fmt.Errorf("invalid length %d, expected %d", len(w), idSize)
 	}
 
 	if w[0] != address.NEO3Prefix {
@@ -57,10 +61,10 @@ func (x ID) WriteToV2(m *refs.OwnerID) {
 
 // SetScriptHash forms user ID from wallet address scripthash.
 func (x *ID) SetScriptHash(scriptHash util.Uint160) {
-	if cap(x.w) < 25 {
-		x.w = make([]byte, 25)
-	} else if len(x.w) < 25 {
-		x.w = x.w[:25]
+	if cap(x.w) < idSize {
+		x.w = make([]byte, idSize)
+	} else if len(x.w) < idSize {
+		x.w = x.w[:idSize]
 	}
 
 	x.w[0] = address.Prefix
@@ -114,3 +118,8 @@ func (x ID) String() string {
 func (x ID) Equals(x2 ID) bool {
 	return bytes.Equal(x.w, x2.w)
 }
+
+// IsEmpty returns True, if ID is empty value.
+func (x ID) IsEmpty() bool {
+	return bytes.Equal(zeroSlice, x.w)
+}
diff --git a/user/id_test.go b/user/id_test.go
index 30e19db4..6b1d0f89 100644
--- a/user/id_test.go
+++ b/user/id_test.go
@@ -48,7 +48,7 @@ func TestID_SetScriptHash(t *testing.T) {
 }
 
 func TestV2_ID(t *testing.T) {
-	id := *usertest.ID()
+	id := usertest.ID()
 	var m refs.OwnerID
 	var id2 ID
 
@@ -91,7 +91,7 @@ func TestV2_ID(t *testing.T) {
 }
 
 func TestID_EncodeToString(t *testing.T) {
-	id := *usertest.ID()
+	id := usertest.ID()
 
 	s := id.EncodeToString()
 
@@ -110,8 +110,8 @@ func TestID_EncodeToString(t *testing.T) {
 }
 
 func TestID_Equal(t *testing.T) {
-	id1 := *usertest.ID()
-	id2 := *usertest.ID()
+	id1 := usertest.ID()
+	id2 := usertest.ID()
 	id3 := id1
 
 	require.True(t, id1.Equals(id1)) // self-equality
diff --git a/user/test/id.go b/user/test/id.go
index dd214054..b4d8f9c8 100644
--- a/user/test/id.go
+++ b/user/test/id.go
@@ -6,7 +6,7 @@ import (
 )
 
 // ID returns random user.ID.
-func ID() *user.ID {
+func ID() user.ID {
 	key, err := keys.NewPrivateKey()
 	if err != nil {
 		panic(err)
@@ -15,5 +15,5 @@ func ID() *user.ID {
 	var x user.ID
 	user.IDFromKey(&x, key.PrivateKey.PublicKey)
 
-	return &x
+	return x
 }