diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 0d69840df..471c8a320 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -151,8 +151,14 @@ module ApplicationHelper
       end
 
       time_tag(text, time, class: klass)
-    else
-      time_tag("in " + distance_of_time_in_words(Time.now, time), time)
+    elsif time.future?
+      if compact
+        text = distance_of_time_in_words(Time.now, time)
+        text = text.gsub(/almost|about|over/, "").gsub(/less than a/, "<1").strip
+        time_tag(text, time)
+      else
+        time_tag("in " + distance_of_time_in_words(Time.now, time), time)
+      end
     end
   end
 
diff --git a/app/javascript/src/javascripts/common.js b/app/javascript/src/javascripts/common.js
index 90fc89347..6d8eb9776 100644
--- a/app/javascript/src/javascripts/common.js
+++ b/app/javascript/src/javascripts/common.js
@@ -7,6 +7,13 @@ $(function() {
     e.preventDefault();
   });
 
+  $("#hide-promotion-notice").on("click.danbooru", function(e) {
+    $("#promotion-notice").hide();
+    Cookie.put("hide_promotion_notice", "1", 1 * 18 * 60 * 60);
+    Cookie.put("hide_upgrade_account_notice", "1", 7 * 24 * 60 * 60);
+    e.preventDefault();
+  });
+
   $("#hide-dmail-notice").on("click.danbooru", function(e) {
     var $dmail_notice = $("#dmail-notice");
     $dmail_notice.hide();
diff --git a/app/models/user.rb b/app/models/user.rb
index 27f80d6c6..5e54b50c0 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -437,7 +437,9 @@ class User < ApplicationRecord
       end
 
       def tag_query_limit(level)
-        if level >= User::Levels::BUILDER
+        if level >= User::Levels::MEMBER && Danbooru.config.is_promotion?
+          Float::INFINITY
+        elsif level >= User::Levels::BUILDER
           Float::INFINITY
         elsif level == User::Levels::PLATINUM
           12
diff --git a/app/models/user_upgrade.rb b/app/models/user_upgrade.rb
index 46dee3845..8551c7951 100644
--- a/app/models/user_upgrade.rb
+++ b/app/models/user_upgrade.rb
@@ -37,7 +37,11 @@ class UserUpgrade < ApplicationRecord
   end
 
   def self.gold_price
-    2000
+    if Danbooru.config.is_promotion?
+      1500
+    else
+      2000
+    end
   end
 
   def self.platinum_price
@@ -161,6 +165,9 @@ class UserUpgrade < ApplicationRecord
           price: price_id,
           quantity: 1,
         }],
+        discounts: [{
+          coupon: promotion_discount_id,
+        }],
         metadata: {
           user_upgrade_id: id,
           purchaser_id: purchaser.id,
@@ -218,6 +225,12 @@ class UserUpgrade < ApplicationRecord
       !pending?
     end
 
+    def promotion_discount_id
+      if Danbooru.config.is_promotion?
+        Danbooru.config.stripe_promotion_discount_id
+      end
+    end
+
     def upgrade_price_id(currency)
       case [upgrade_type, currency]
       when ["gold", "usd"]
diff --git a/app/views/layouts/default.html.erb b/app/views/layouts/default.html.erb
index b94ba203f..a12cb7945 100644
--- a/app/views/layouts/default.html.erb
+++ b/app/views/layouts/default.html.erb
@@ -80,7 +80,20 @@
   <div id="page">
     <%= render "users/verification_notice" %>
 
-    <% if !CurrentUser.is_anonymous? && !CurrentUser.is_gold? && !CurrentUser.user.is_banned? && cookies[:hide_upgrade_account_notice].blank? && params[:action] != "upgrade_information" %>
+    <% if Danbooru.config.is_promotion? && cookies[:hide_promotion_notice].blank? %>
+      <div class="notice notice-info notice-small flex text-center items-center justify-center gap-2" id="promotion-notice">
+        <% file = %w[provgift.png kemogift.png padoru.gif ablobgift.gif].sample %>
+        <%= tag.img src: "/images/#{file}", width: 32, height: 32 %>
+
+        <span>
+          <%= link_to "Danbooru Winter Sale", forum_topic_path(Danbooru.config.winter_sale_forum_topic_id) %> ends <%= time_ago_in_words_tagged(Danbooru.config.winter_sale_end_date) %>!
+          <br>
+          <%= link_to "Get 25% off Gold & Platinum", new_user_upgrade_path %>
+        </span>
+
+        <span>(<%= link_to "hide", "#", id: "hide-promotion-notice" %>)</span>
+      </div>
+    <% elsif !CurrentUser.is_anonymous? && !CurrentUser.is_gold? && !CurrentUser.user.is_banned? && cookies[:hide_upgrade_account_notice].blank? && params[:action] != "upgrade_information" %>
       <%= render "users/upgrade_notice" %>
     <% end %>
 
diff --git a/app/views/user_upgrades/new.html.erb b/app/views/user_upgrades/new.html.erb
index 7e88565bb..85566f6b4 100644
--- a/app/views/user_upgrades/new.html.erb
+++ b/app/views/user_upgrades/new.html.erb
@@ -26,6 +26,14 @@
       their profile page and look for a "Gift Upgrade" link.</p>
     <% end %>
 
+    <% if Danbooru.config.is_promotion? %>
+      <p>
+        <%= tag.img src: "/images/padoru.gif", width: 24, height: 24 %>
+        <b>Danbooru Winter Sale! Gold and Platinum upgrades are 25% off. Sale ends <%= time_ago_in_words_tagged(Time.utc("2022-01-01")) %>.</b>
+        <%= tag.img src: "/images/padoru.gif", width: 24, height: 24 %>
+      </p>
+    <% end %>
+
     <table id="feature-comparison" class="w-full text-center table-md mt-8 mb-8">
       <thead>
         <tr>
@@ -44,19 +52,25 @@
           <td></td>
           <td>Free</td>
           <td>
+            <% if Danbooru.config.is_promotion? %>
+              <s>$20</s>
+            <% end %>
             <%= cents_to_usd(UserUpgrade.gold_price) %>
             <div class="fineprint">One time fee</div>
           </td>
           <td>
+            <% if Danbooru.config.is_promotion? %>
+              <s>$40</s>
+            <% end %>
             <%= cents_to_usd(UserUpgrade.platinum_price) %>
             <div class="fineprint">One time fee</div>
           </td>
         </tr>
         <tr>
           <td>Tag Limit</td>
-          <td><%= User.tag_query_limit(User::Levels::MEMBER) %></td>
-          <td><%= User.tag_query_limit(User::Levels::GOLD) %></td>
-          <td><%= User.tag_query_limit(User::Levels::PLATINUM) %></td>
+          <td>2</td>
+          <td>6</td>
+          <td>12</td>
         </tr>
         <tr>
           <td>See Hidden Tags</td>
diff --git a/config/danbooru_default_config.rb b/config/danbooru_default_config.rb
index bc5b4c840..225a296e4 100644
--- a/config/danbooru_default_config.rb
+++ b/config/danbooru_default_config.rb
@@ -516,6 +516,19 @@ module Danbooru
     # https://docs.newrelic.com/docs/accounts/accounts-billing/account-setup/new-relic-license-key/
     def new_relic_license_key
     end
+
+    # True if the Winter Sale is active.
+    def is_promotion?
+      false
+    end
+
+    # The end date of the Winter Sale.
+    def winter_sale_end_date
+    end
+
+    # The forum topic linked to in the Winter Sale notice.
+    def winter_sale_forum_topic_id
+    end
   end
 
   EnvironmentConfiguration = Struct.new(:config) do
diff --git a/public/images/blobgift.png b/public/images/blobgift.png
new file mode 100644
index 000000000..bfcb3aa64
Binary files /dev/null and b/public/images/blobgift.png differ
diff --git a/public/images/kemogift.png b/public/images/kemogift.png
new file mode 100644
index 000000000..300da66fb
Binary files /dev/null and b/public/images/kemogift.png differ
diff --git a/public/images/padoru.gif b/public/images/padoru.gif
new file mode 100644
index 000000000..454968b16
Binary files /dev/null and b/public/images/padoru.gif differ
diff --git a/public/images/provgift.png b/public/images/provgift.png
new file mode 100644
index 000000000..2dac5a97f
Binary files /dev/null and b/public/images/provgift.png differ