diff --git a/app/models/featured_tag.rb b/app/models/featured_tag.rb
index 201ce75f5c..b16c79ac79 100644
--- a/app/models/featured_tag.rb
+++ b/app/models/featured_tag.rb
@@ -26,6 +26,8 @@ class FeaturedTag < ApplicationRecord
 
   attr_writer :name
 
+  LIMIT = 10
+
   def name
     tag_id.present? ? tag.name : @name
   end
@@ -50,7 +52,7 @@ class FeaturedTag < ApplicationRecord
   end
 
   def validate_featured_tags_limit
-    errors.add(:base, I18n.t('featured_tags.errors.limit')) if account.featured_tags.count >= 10
+    errors.add(:base, I18n.t('featured_tags.errors.limit')) if account.featured_tags.count >= LIMIT
   end
 
   def validate_tag_name
diff --git a/app/serializers/rest/instance_serializer.rb b/app/serializers/rest/instance_serializer.rb
index dfa8ce40a8..7d00b20ba0 100644
--- a/app/serializers/rest/instance_serializer.rb
+++ b/app/serializers/rest/instance_serializer.rb
@@ -47,6 +47,10 @@ class REST::InstanceSerializer < ActiveModel::Serializer
         streaming: Rails.configuration.x.streaming_api_base_url,
       },
 
+      accounts: {
+        max_featured_tags: FeaturedTag::LIMIT,
+      },
+
       statuses: {
         max_characters: StatusLengthValidator::MAX_CHARS,
         max_media_attachments: 4,