diff --git a/boards/models/post/sync.py b/boards/models/post/sync.py
--- a/boards/models/post/sync.py
+++ b/boards/models/post/sync.py
@@ -1,6 +1,6 @@
 import xml.etree.ElementTree as et
 from django.db import transaction
-from boards.models import KeyPair, GlobalId, Signature, Post
+from boards.models import KeyPair, GlobalId, Signature, Post, Tag
 
 ENCODING_UNICODE = 'unicode'
 
@@ -19,6 +19,8 @@ TAG_SIGNATURE = 'signature'
 TAG_CONTENT = 'content'
 TAG_ATTACHMENTS = 'attachments'
 TAG_ATTACHMENT = 'attachment'
+TAG_TAGS = 'tags'
+TAG_TAG = 'tag'
 
 TYPE_GET = 'get'
 
@@ -57,13 +59,16 @@ class SyncManager:
             text = et.SubElement(content_tag, TAG_TEXT)
             text.text = post.get_sync_text()
 
-            if not post.is_opening():
-                thread = et.SubElement(content_tag, TAG_THREAD)
-                thread_id = et.SubElement(thread, TAG_ID)
-                post.get_thread().get_opening_post().global_id.to_xml_element(thread_id)
+            thread = post.get_thread()
+            if post.is_opening():
+                tag_tags = et.SubElement(content_tag, TAG_TAGS)
+                for tag in thread.get_tags():
+                    tag_tag = et.SubElement(tag_tags, TAG_TAG)
+                    tag_tag.text = tag.name
             else:
-                # TODO Output tags here
-                pass
+                tag_thread = et.SubElement(content_tag, TAG_THREAD)
+                thread_id = et.SubElement(tag_thread, TAG_ID)
+                thread.get_opening_post().global_id.to_xml_element(thread_id)
 
             pub_time = et.SubElement(content_tag, TAG_PUB_TIME)
             pub_time.text = str(post.get_pub_time_str())
@@ -120,12 +125,16 @@ class SyncManager:
                     pub_time = tag_content.find(TAG_PUB_TIME).text
 
                     thread = tag_content.find(TAG_THREAD)
+                    tags = []
                     if thread:
                         opening_post = Post.objects.get(
                             id=thread.find(TAG_ID).text)
                     else:
                         opening_post = None
-                        # TODO Get tags here
+                        tag_tags = tag_content.find(TAG_TAGS)
+                        for tag_tag in tag_tags:
+                            tag, created = Tag.objects.get_or_create(name=tag_tag.text)
+                            tags.append(tag)
 
                     # TODO Check that the replied posts are already present
                     # before adding new ones
@@ -134,7 +143,7 @@ class SyncManager:
 
                     post = Post.objects.import_post(
                         title=title, text=text, pub_time=pub_time,
-                        opening_post=opening_post)
+                        opening_post=opening_post, tags=tags)
                     post.global_id = global_id
         else:
             # TODO Throw an exception?
diff --git a/boards/tests/test_sync.py b/boards/tests/test_sync.py
--- a/boards/tests/test_sync.py
+++ b/boards/tests/test_sync.py
@@ -1,4 +1,4 @@
-from boards.models import KeyPair, Post
+from boards.models import KeyPair, Post, Tag
 from boards.models.post.sync import SyncManager
 from boards.tests.mocks import MockRequest
 from boards.views.sync import response_get
@@ -16,7 +16,9 @@ class SyncTest(TestCase):
         """
 
         KeyPair.objects.generate_key(primary=True)
-        post = Post.objects.create_post(title='test_title', text='test_text')
+        tag = Tag.objects.create(name='tag1')
+        post = Post.objects.create_post(title='test_title', text='test_text',
+                                        tags=[tag])
 
         request = MockRequest()
         request.body = (
@@ -38,6 +40,7 @@ class SyncTest(TestCase):
             '<id key="%s" local-id="%d" type="%s" />'
             '<title>%s</title>'
             '<text>%s</text>'
+            '<tags><tag>%s</tag></tags>'
             '<pub-time>%s</pub-time>'
             '</content>' % (
                 post.global_id.key,
@@ -45,6 +48,7 @@ class SyncTest(TestCase):
                 post.global_id.key_type,
                 post.title,
                 post.get_raw_text(),
+                post.get_thread().get_tags().first().name,
                 post.get_pub_time_str(),
             ) in response_get(request).content.decode(),
             'Wrong response generated for the GET request.')
@@ -55,6 +59,11 @@ class SyncTest(TestCase):
         self.assertEqual(1, Post.objects.count(),
                          'Post was not created from XML response.')
 
+        parsed_post = Post.objects.first()
+        self.assertEqual('tag1',
+                         parsed_post.get_thread().get_tags().first().name,
+                         'Invalid tag was parsed.')
+
         SyncManager.parse_response_get(response)
         self.assertEqual(1, Post.objects.count(),
                          'The same post was imported twice.')