diff --git a/ghost/admin/app/components/gh-post-settings-menu.js b/ghost/admin/app/components/gh-post-settings-menu.js
index 0e4a06c8ce..faa8f16e91 100644
--- a/ghost/admin/app/components/gh-post-settings-menu.js
+++ b/ghost/admin/app/components/gh-post-settings-menu.js
@@ -40,10 +40,10 @@ export default Component.extend(SettingsMenuMixin, {
     twitterTitleScratch: alias('post.twitterTitleScratch'),
     slugValue: boundOneWay('post.slug'),
 
-    facebookDescription: or('ogDescriptionScratch', 'customExcerptScratch', 'seoDescription'),
+    facebookDescription: or('ogDescriptionScratch', 'customExcerptScratch', 'seoDescription', 'post.excerpt', 'settings.description', ''),
     facebookImage: or('post.ogImage', 'post.featureImage'),
     facebookTitle: or('ogTitleScratch', 'seoTitle'),
-    twitterDescription: or('twitterDescriptionScratch', 'customExcerptScratch', 'seoDescription'),
+    twitterDescription: or('twitterDescriptionScratch', 'customExcerptScratch', 'seoDescription', 'post.excerpt', 'settings.description', ''),
     twitterImage: or('post.twitterImage', 'post.featureImage'),
     twitterTitle: or('twitterTitleScratch', 'seoTitle'),
 
diff --git a/ghost/admin/app/components/gh-tag-settings-form.js b/ghost/admin/app/components/gh-tag-settings-form.js
index d421409105..49a3d6e432 100644
--- a/ghost/admin/app/components/gh-tag-settings-form.js
+++ b/ghost/admin/app/components/gh-tag-settings-form.js
@@ -11,6 +11,7 @@ const {Handlebars} = Ember;
 export default Component.extend({
     feature: service(),
     config: service(),
+    settings: service(),
 
     tag: null,
     scratchTag: null,
@@ -19,11 +20,11 @@ export default Component.extend({
     setProperty: () => {},
 
     twitterTitle: or('scratchTag.twitterTitle', 'seoTitle'),
-    twitterDescription: or('scratchTag.twitterDescription', 'seoDescription'),
+    twitterDescription: or('scratchTag.twitterDescription', 'seoDescription', 'settings.metaDescription', ''),
     twitterImage: or('tag.twitterImage', 'tag.featureImage'),
 
     facebookTitle: or('scratchTag.ogTitle', 'seoTitle'),
-    facebookDescription: or('scratchTag.ogDescription', 'seoDescription'),
+    facebookDescription: or('scratchTag.ogDescription', 'seoDescription', 'settings.metaDescription', ''),
     facebookImage: or('tag.ogImage', 'tag.featureImage'),
 
     accentColor: computed('tag.accentColor', function () {
@@ -48,7 +49,9 @@ export default Component.extend({
     }),
 
     seoTitle: computed('scratchTag.{name,metaTitle}', function () {
-        let metaTitle = this.scratchTag.metaTitle || this.scratchTag.name;
+        const settingsTitle = this.get('settings.title') || '';
+        const tagName = settingsTitle ? `${this.scratchTag.name} - ${settingsTitle}` : this.scratchTag.name;
+        let metaTitle = this.scratchTag.metaTitle || tagName;
 
         if (metaTitle && metaTitle.length > 70) {
             metaTitle = metaTitle.substring(0, 70).trim();