diff --git a/src/Collections/Tags.php b/src/Collections/Tags.php
index 068cb76a4..6740650c6 100644
--- a/src/Collections/Tags.php
+++ b/src/Collections/Tags.php
@@ -43,7 +43,7 @@ public function create($tag)
     {
         $params = [$tag => ['sites' => [$this->org_site_membership->getSite()->id,],],];
         $this->request->request(
-            "organizations/{$this->org_site_membership->getOrganization()->id}/tags",
+            "organizations/{$this->org_site_membership->id}/tags",
             ['method' => 'put', 'form_params' => $params,]
         );
         $this->getContainer()->add($this->collected_class)
diff --git a/src/Commands/Tag/TagCommand.php b/src/Commands/Tag/TagCommand.php
index f937d7826..c7dd374e9 100644
--- a/src/Commands/Tag/TagCommand.php
+++ b/src/Commands/Tag/TagCommand.php
@@ -3,22 +3,29 @@
 namespace Pantheon\Terminus\Commands\Tag;
 
 use Pantheon\Terminus\Commands\TerminusCommand;
+use Pantheon\Terminus\Site\SiteAwareInterface;
+use Pantheon\Terminus\Site\SiteAwareTrait;
 
 /**
  * Class TagCommand
  * @package Pantheon\Terminus\Commands\Tag
  */
-abstract class TagCommand extends TerminusCommand
+abstract class TagCommand extends TerminusCommand implements SiteAwareInterface
 {
+    use SiteAwareTrait;
+
     /**
-     * @param $site_id
+     * @param $site_identifier
      * @param $org_id
      * @return array
      */
-    protected function getModels($site_id, $org_id)
+    protected function getModels($site_identifier, $org_id)
     {
+        $site = $this->sites->get($site_identifier);
+        $site_id = $site->id;
+
         $organization = $this->session()->getUser()->getOrganizationMemberships()->get($org_id)->getOrganization();
-        $membership = $organization->getSiteMemberships()->get($site_id);
-        return [$organization, $membership->getSite(), $membership->getTags(),];
+        $membership = $organization->getSiteMembership($site_id);
+        return [$organization, $site, $membership->getTags(),];
     }
 }
diff --git a/src/Models/Organization.php b/src/Models/Organization.php
index 4d80cb633..0d758c152 100644
--- a/src/Models/Organization.php
+++ b/src/Models/Organization.php
@@ -8,6 +8,7 @@
 use Pantheon\Terminus\Collections\OrganizationUpstreams;
 use Pantheon\Terminus\Collections\OrganizationUserMemberships;
 use Pantheon\Terminus\Collections\Workflows;
+use Pantheon\Terminus\Models\OrganizationSiteMembership;
 use Pantheon\Terminus\Friends\ProfileInterface;
 use Pantheon\Terminus\Friends\ProfileTrait;
 use Pantheon\Terminus\Friends\SitesInterface;
@@ -140,6 +141,26 @@ public function getSiteMemberships()
         return $this->site_memberships;
     }
 
+    /**
+     * Fetch a single site membership directly by site ID or name
+     *
+     * @param string $site_uuid The site ID fetch membership for
+     * @return OrganizationSiteMembership
+     * @throws \Pantheon\Terminus\Exceptions\TerminusNotFoundException
+     */
+    public function getSiteMembership($site_uuid)
+    {
+        $response = $this->request->request(
+            "organizations/{$this->id}/memberships/sites/{$site_uuid}"
+        );
+
+        $nickname = \uniqid(__FUNCTION__ . '-');
+        $this->getContainer()->add($nickname, OrganizationSiteMembership::class)
+            ->addArgument($response['data'])
+            ->addArgument(['organization' => $this]);
+        return $this->getContainer()->get($nickname);
+    }
+
     /**
      * @return OrganizationUpstreams
      */
diff --git a/src/Models/Tag.php b/src/Models/Tag.php
index 2422245cd..03186429f 100644
--- a/src/Models/Tag.php
+++ b/src/Models/Tag.php
@@ -20,9 +20,9 @@ public function delete()
         $this->request->request(
             sprintf(
                 'organizations/%s/tags/%s/sites?entity=%s',
-                $membership->getOrganization()->id,
+                $membership->attributes->organization_id,
                 $this->id,
-                $membership->getSite()->id
+                $membership->attributes->site_id
             ),
             ['method' => 'delete',]
         );