diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc3a3f80b..844f15968 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Split getting a single preference by name from `get_preferences` method into
   `get_preference` [PR 85](https://github.com/greenbone/python-gvm/pull/85)
 * Added an explicit `create_container_task` method [PR 108](https://github.com/greenbone/python-gvm/pull/108)
+* Added Gmpv8 version of create_tag with resource_filter parameter and
+  plural resource_ids parameter [PR 115](https://github.com/greenbone/python-gvm/pull/115)
+* Added Gmpv8 version of modify_tag with resource_action parameter,
+  resource_filter parameter, plural resource_ids parameter [PR 115](https://github.com/greenbone/python-gvm/pull/115)
 
 ### Changed
 * Aligned ALIVE_TESTS declaration with list from GSA [PR 93](https://github.com/greenbone/python-gvm/pull/93)
diff --git a/gvm/protocols/gmpv7.py b/gvm/protocols/gmpv7.py
index d6eb7ac03..c01249654 100644
--- a/gvm/protocols/gmpv7.py
+++ b/gvm/protocols/gmpv7.py
@@ -5269,7 +5269,7 @@ def modify_tag(
             name (str, optional): Name of the tag.
             value (str, optional): Value of the tag.
             active (boolean, optional): Whether the tag is active.
-            resource_id (str, optional): IDs of the resource to which to
+            resource_id (str, optional): ID of the resource to which to
                 attach the tag. Required if resource_type is set.
             resource_type (str, optional): Type of the resource to which to
                 attach the tag. Required if resource_id is set.
diff --git a/gvm/protocols/gmpv8.py b/gvm/protocols/gmpv8.py
index 1a74adc90..ce7aa10d8 100644
--- a/gvm/protocols/gmpv8.py
+++ b/gvm/protocols/gmpv8.py
@@ -392,3 +392,159 @@ def modify_credential(
             _xmlkey.add_element("public", public_key)
 
         return self._send_xml_command(cmd)
+
+    def create_tag(
+        self,
+        name,
+        resource_type,
+        *,
+        resource_filter=None,
+        resource_ids=None,
+        value=None,
+        comment=None,
+        active=None
+    ):
+        """Create a tag.
+
+        Arguments:
+            name (str): Name of the tag. A full tag name consisting of
+                namespace and predicate e.g. `foo:bar`.
+            resource_type (str): Entity type the tag is to be attached
+                to.
+            resource_filter (str, optional) Filter term to select
+                resources the tag is to be attached to. Either
+                resource_filter or resource_ids must be provided.
+            resource_ids (list, optional): IDs of the resources the
+                tag is to be attached to. Either resource_filter or
+                resource_ids must be provided.
+            value (str, optional): Value associated with the tag.
+            comment (str, optional): Comment for the tag.
+            active (boolean, optional): Whether the tag should be
+                active.
+
+        Returns:
+            The response. See :py:meth:`send_command` for details.
+        """
+        if not name:
+            raise RequiredArgument("create_tag requires name argument")
+
+        if not resource_filter and not resource_ids:
+            raise RequiredArgument(
+                "create_tag requires resource_filter or resource_ids argument"
+            )
+
+        if not resource_type:
+            raise RequiredArgument("create_tag requires resource_type argument")
+
+        cmd = XmlCommand('create_tag')
+        cmd.add_element('name', name)
+
+        _xmlresources = cmd.add_element("resources")
+        if resource_filter is not None:
+            _xmlresources.set_attribute("filter", resource_filter)
+
+        for resource_id in resource_ids or []:
+            _xmlresources.add_element(
+                "resource", attrs={"id": str(resource_id)}
+            )
+
+        _xmlresources.add_element("type", resource_type)
+
+        if comment:
+            cmd.add_element("comment", comment)
+
+        if value:
+            cmd.add_element("value", value)
+
+        if active is not None:
+            if active:
+                cmd.add_element("active", "1")
+            else:
+                cmd.add_element("active", "0")
+
+        return self._send_xml_command(cmd)
+
+    def modify_tag(
+        self,
+        tag_id,
+        *,
+        comment=None,
+        name=None,
+        value=None,
+        active=None,
+        resource_action=None,
+        resource_type=None,
+        resource_filter=None,
+        resource_ids=None
+    ):
+        """Modifies an existing tag.
+
+        Arguments:
+            tag_id (str): UUID of the tag.
+            comment (str, optional): Comment to add to the tag.
+            name (str, optional): Name of the tag.
+            value (str, optional): Value of the tag.
+            active (boolean, optional): Whether the tag is active.
+            resource_action (str, optional) Whether to add or remove
+                resources instead of overwriting. One of '', 'add',
+                'set' or 'remove'.
+            resource_type (str, optional): Type of the resources to
+                which to attach the tag. Required if resource_filter
+                or resource_ids is set.
+            resource_filter (str, optional) Filter term to select
+                resources the tag is to be attached to. Required if
+                resource_type is set unless resource_ids is set.
+            resource_ids (list, optional): IDs of the resources to
+                which to attach the tag. Required if resource_type is
+                set unless resource_filter is set.
+
+        Returns:
+            The response. See :py:meth:`send_command` for details.
+        """
+        if not tag_id:
+            raise RequiredArgument("modify_tag requires a tag_id element")
+
+        cmd = XmlCommand("modify_tag")
+        cmd.set_attribute("tag_id", str(tag_id))
+
+        if comment:
+            cmd.add_element("comment", comment)
+
+        if name:
+            cmd.add_element("name", name)
+
+        if value:
+            cmd.add_element("value", value)
+
+        if active is not None:
+            cmd.add_element("active", _to_bool(active))
+
+        if resource_action or resource_filter or resource_ids or resource_type:
+            if not resource_filter and not resource_ids:
+                raise RequiredArgument(
+                    "modify_tag requires resource_filter or resource_ids "
+                    "argument when resource_action or resource_type is set"
+                )
+
+            if not resource_type:
+                raise RequiredArgument(
+                    "modify_tag requires resource_type argument when "
+                    "resource_action or resource_filter or resource_ids "
+                    "is set"
+                )
+
+            _xmlresources = cmd.add_element("resources")
+            if resource_action is not None:
+                _xmlresources.set_attribute("action", resource_action)
+
+            if resource_filter is not None:
+                _xmlresources.set_attribute("filter", resource_filter)
+
+            for resource_id in resource_ids or []:
+                _xmlresources.add_element(
+                    "resource", attrs={"id": str(resource_id)}
+                )
+
+            _xmlresources.add_element("type", resource_type)
+
+        return self._send_xml_command(cmd)
diff --git a/tests/protocols/gmpv8/test_create_tag.py b/tests/protocols/gmpv8/test_create_tag.py
new file mode 100644
index 000000000..622776542
--- /dev/null
+++ b/tests/protocols/gmpv8/test_create_tag.py
@@ -0,0 +1,202 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2018 Greenbone Networks GmbH
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import unittest
+
+from gvm.errors import RequiredArgument
+from gvm.protocols.gmpv8 import Gmp
+
+from .. import MockConnection
+
+
+class GmpCreateTagTestCase(unittest.TestCase):
+    def setUp(self):
+        self.connection = MockConnection()
+        self.gmp = Gmp(self.connection)
+
+    def test_create_tag_missing_name(self):
+        with self.assertRaises(RequiredArgument):
+            self.gmp.create_tag(
+                name=None, resource_ids=['foo'], resource_type='task'
+            )
+
+        with self.assertRaises(RequiredArgument):
+            self.gmp.create_tag(
+                name='', resource_ids=['foo'], resource_type='task'
+            )
+
+    def test_create_tag_missing_resource_filter_and_ids(self):
+        with self.assertRaises(RequiredArgument):
+            self.gmp.create_tag(
+                name='foo',
+                resource_type='task',
+                resource_filter=None,
+                resource_ids=None
+            )
+
+        with self.assertRaises(RequiredArgument):
+            self.gmp.create_tag(
+                name='foo',
+                resource_type='task',
+                resource_filter=None,
+                resource_ids=[]
+            )
+
+        with self.assertRaises(RequiredArgument):
+            self.gmp.create_tag(
+                name='foo',
+                resource_type='task'
+            )
+
+    def test_create_tag_missing_resource_type(self):
+        with self.assertRaises(RequiredArgument):
+            self.gmp.create_tag(
+                name='foo',
+                resource_type=None,
+                resource_filter=None,
+                resource_ids=['foo']
+            )
+
+        with self.assertRaises(RequiredArgument):
+            self.gmp.create_tag(
+                name='foo',
+                resource_type=None,
+                resource_filter="name=foo",
+                resource_ids=None
+            )
+
+        with self.assertRaises(RequiredArgument):
+            self.gmp.create_tag(
+                name='foo',
+                resource_type='',
+                resource_ids=['foo']
+            )
+
+    def test_create_tag_with_resource_filter(self):
+        self.gmp.create_tag(
+            name='foo', resource_filter='name=foo', resource_type='task'
+        )
+
+        self.connection.send.has_been_called_with(
+            '<create_tag>'
+            '<name>foo</name>'
+            '<resources filter="name=foo">'
+            '<type>task</type>'
+            '</resources>'
+            '</create_tag>'
+        )
+
+    def test_create_tag_with_resource_ids(self):
+        self.gmp.create_tag(
+            name='foo', resource_ids=['foo'], resource_type='task'
+        )
+
+        self.connection.send.has_been_called_with(
+            '<create_tag>'
+            '<name>foo</name>'
+            '<resources>'
+            '<resource id="foo"/>'
+            '<type>task</type>'
+            '</resources>'
+            '</create_tag>'
+        )
+
+        self.gmp.create_tag(
+            name='foo', resource_ids=['foo', 'bar'], resource_type='task'
+        )
+
+        self.connection.send.has_been_called_with(
+            '<create_tag>'
+            '<name>foo</name>'
+            '<resources>'
+            '<resource id="foo"/>'
+            '<resource id="bar"/>'
+            '<type>task</type>'
+            '</resources>'
+            '</create_tag>'
+        )
+
+    def test_create_tag_with_comment(self):
+        self.gmp.create_tag(
+            name='foo',
+            resource_ids=['foo'],
+            resource_type='task',
+            comment='bar'
+        )
+
+        self.connection.send.has_been_called_with(
+            '<create_tag>'
+            '<name>foo</name>'
+            '<resources>'
+            '<resource id="foo"/>'
+            '<type>task</type>'
+            '</resources>'
+            '<comment>bar</comment>'
+            '</create_tag>'
+        )
+
+    def test_create_tag_with_value(self):
+        self.gmp.create_tag(
+            name='foo', resource_ids=['foo'], resource_type='task', value='bar'
+        )
+
+        self.connection.send.has_been_called_with(
+            '<create_tag>'
+            '<name>foo</name>'
+            '<resources>'
+            '<resource id="foo"/>'
+            '<type>task</type>'
+            '</resources>'
+            '<value>bar</value>'
+            '</create_tag>'
+        )
+
+    def test_create_tag_with_active(self):
+        self.gmp.create_tag(
+            name='foo', resource_ids=['foo'], resource_type='task', active=True
+        )
+
+        self.connection.send.has_been_called_with(
+            '<create_tag>'
+            '<name>foo</name>'
+            '<resources>'
+            '<resource id="foo"/>'
+            '<type>task</type>'
+            '</resources>'
+            '<active>1</active>'
+            '</create_tag>'
+        )
+
+        self.gmp.create_tag(
+            name='foo', resource_ids=['foo'], resource_type='task', active=False
+        )
+
+        self.connection.send.has_been_called_with(
+            '<create_tag>'
+            '<name>foo</name>'
+            '<resources>'
+            '<resource id="foo"/>'
+            '<type>task</type>'
+            '</resources>'
+            '<active>0</active>'
+            '</create_tag>'
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/tests/protocols/gmpv8/test_modify_tag.py b/tests/protocols/gmpv8/test_modify_tag.py
new file mode 100644
index 000000000..8029b4fd6
--- /dev/null
+++ b/tests/protocols/gmpv8/test_modify_tag.py
@@ -0,0 +1,167 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2018 Greenbone Networks GmbH
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import unittest
+
+from gvm.errors import RequiredArgument
+from gvm.protocols.gmpv8 import Gmp
+
+from .. import MockConnection
+
+
+class GmpModifyTagTestCase(unittest.TestCase):
+    def setUp(self):
+        self.connection = MockConnection()
+        self.gmp = Gmp(self.connection)
+
+    def test_modify_tag(self):
+        self.gmp.modify_tag(tag_id='t1')
+
+        self.connection.send.has_been_called_with('<modify_tag tag_id="t1"/>')
+
+    def test_modify_tag_missing_tag_id(self):
+        with self.assertRaises(RequiredArgument):
+            self.gmp.modify_tag(tag_id=None)
+
+        with self.assertRaises(RequiredArgument):
+            self.gmp.modify_tag(tag_id='')
+
+    def test_modify_tag_with_comment(self):
+        self.gmp.modify_tag(tag_id='t1', comment='foo')
+
+        self.connection.send.has_been_called_with(
+            '<modify_tag tag_id="t1">'
+            '<comment>foo</comment>'
+            '</modify_tag>'
+        )
+
+    def test_modify_tag_with_value(self):
+        self.gmp.modify_tag(tag_id='t1', value='foo')
+
+        self.connection.send.has_been_called_with(
+            '<modify_tag tag_id="t1">'
+            '<value>foo</value>'
+            '</modify_tag>'
+        )
+
+    def test_modify_tag_with_name(self):
+        self.gmp.modify_tag(tag_id='t1', name='foo')
+
+        self.connection.send.has_been_called_with(
+            '<modify_tag tag_id="t1">'
+            '<name>foo</name>'
+            '</modify_tag>'
+        )
+
+    def test_modify_tag_with_active(self):
+        self.gmp.modify_tag(tag_id='t1', active=True)
+
+        self.connection.send.has_been_called_with(
+            '<modify_tag tag_id="t1">'
+            '<active>1</active>'
+            '</modify_tag>'
+        )
+
+        self.gmp.modify_tag(tag_id='t1', active=False)
+
+        self.connection.send.has_been_called_with(
+            '<modify_tag tag_id="t1">'
+            '<active>0</active>'
+            '</modify_tag>'
+        )
+
+    def test_modify_tag_with_resource_filter_and_type(self):
+        self.gmp.modify_tag(
+            tag_id='t1', resource_filter='name=foo', resource_type='task'
+        )
+
+        self.connection.send.has_been_called_with(
+            '<modify_tag tag_id="t1">'
+            '<resources filter="name=foo">'
+            '<type>task</type>'
+            '</resources>'
+            '</modify_tag>'
+        )
+
+    def test_modify_tag_with_resource_action_filter_and_type(self):
+        self.gmp.modify_tag(
+            tag_id='t1',
+            resource_action='set',
+            resource_filter='name=foo',
+            resource_type='task'
+        )
+
+        self.connection.send.has_been_called_with(
+            '<modify_tag tag_id="t1">'
+            '<resources action="set" filter="name=foo">'
+            '<type>task</type>'
+            '</resources>'
+            '</modify_tag>'
+        )
+
+    def test_modify_tag_with_resource_ids_and_type(self):
+        self.gmp.modify_tag(
+            tag_id='t1',
+            resource_ids=['r1'],
+            resource_type='task'
+        )
+
+        self.connection.send.has_been_called_with(
+            '<modify_tag tag_id="t1">'
+            '<resources>'
+            '<resource id="r1"/>'
+            '<type>task</type>'
+            '</resources>'
+            '</modify_tag>'
+        )
+
+    def test_modify_tag_with_resource_action_ids_and_type(self):
+        self.gmp.modify_tag(
+            tag_id='t1',
+            resource_action="set",
+            resource_ids=['r1'],
+            resource_type='task'
+        )
+
+        self.connection.send.has_been_called_with(
+            '<modify_tag tag_id="t1">'
+            '<resources action="set">'
+            '<resource id="r1"/>'
+            '<type>task</type>'
+            '</resources>'
+            '</modify_tag>'
+        )
+
+    def test_modify_tag_with_missing_resource_filter_or_ids_andtype(self):
+        with self.assertRaises(RequiredArgument):
+            self.gmp.modify_tag(tag_id='t1', resource_action='add')
+
+    def test_modify_tag_with_missing_resource_type(self):
+        with self.assertRaises(RequiredArgument):
+            self.gmp.modify_tag(tag_id='t1', resource_ids=['r1'])
+
+        with self.assertRaises(RequiredArgument):
+            self.gmp.modify_tag(tag_id='t1', resource_filter='name=foo')
+
+    def test_modify_tag_with_missing_resource_filter_and_ids(self):
+        with self.assertRaises(RequiredArgument):
+            self.gmp.modify_tag(tag_id='t1', resource_type='task')
+
+
+if __name__ == '__main__':
+    unittest.main()