diff --git a/app/logical/alias_and_implication_importer.rb b/app/logical/alias_and_implication_importer.rb
index 86320e9cd..7fe6e5382 100644
--- a/app/logical/alias_and_implication_importer.rb
+++ b/app/logical/alias_and_implication_importer.rb
@@ -78,6 +78,28 @@ class AliasAndImplicationImporter
     end
   end
 
+  def estimate_update_count
+    tokens = self.class.tokenize(text)
+    tokens.inject(0) do |sum, token|
+      case token[0]
+      when :create_alias
+        sum + TagAlias.new(antecedent_name: token[1], consequent_name: token[2]).estimate_update_count
+
+      when :create_implication
+        sum + TagImplication.new(antecedent_name: token[1], consequent_name: token[2]).estimate_update_count
+
+      when :mass_update
+        sum + Moderator::TagBatchChange.new(token[1], token[2]).estimate_update_count
+
+      when :change_category
+        sum + Tag.find_by_name(token[1]).try(:post_count) || 0
+
+      else
+        sum + 0
+      end
+    end
+  end
+
 private
 
   def parse(tokens, approver)
diff --git a/app/logical/moderator/tag_batch_change.rb b/app/logical/moderator/tag_batch_change.rb
index 3afd088cb..fb982eddb 100644
--- a/app/logical/moderator/tag_batch_change.rb
+++ b/app/logical/moderator/tag_batch_change.rb
@@ -20,6 +20,10 @@ module Moderator
       ModAction.log("processed mass update: #{antecedent} -> #{consequent}",:mass_update)
     end
 
+    def estimate_update_count
+      PostReadOnly.tag_match(antecedent).count
+    end
+
     def migrate_posts(normalized_antecedent, normalized_consequent)
       ::Post.tag_match(normalized_antecedent.join(" ")).find_each do |post|
         post.reload
diff --git a/app/models/bulk_update_request.rb b/app/models/bulk_update_request.rb
index 81af0ff5e..0d72130e5 100644
--- a/app/models/bulk_update_request.rb
+++ b/app/models/bulk_update_request.rb
@@ -229,4 +229,8 @@ class BulkUpdateRequest < ApplicationRecord
   def is_rejected?
     status == "rejected"
   end
+
+  def estimate_update_count
+    AliasAndImplicationImporter.new(script, nil).estimate_update_count
+  end
 end
diff --git a/app/models/tag_relationship.rb b/app/models/tag_relationship.rb
index 233807662..fe310bc5c 100644
--- a/app/models/tag_relationship.rb
+++ b/app/models/tag_relationship.rb
@@ -192,6 +192,10 @@ class TagRelationship < ApplicationRecord
     end
   end
 
+  def estimate_update_count
+    Post.fast_count(antecedent_name, skip_cache: true)
+  end
+
   extend SearchMethods
   include MessageMethods
 end
diff --git a/app/views/bulk_update_requests/show.html.erb b/app/views/bulk_update_requests/show.html.erb
index 7d4ff758c..bb614213f 100644
--- a/app/views/bulk_update_requests/show.html.erb
+++ b/app/views/bulk_update_requests/show.html.erb
@@ -9,6 +9,7 @@
       <li><strong>Creator</strong> <%= link_to_user @bulk_update_request.user %></li>
       <li><strong>Date</strong> <%= @bulk_update_request.created_at %></li>
       <li><strong>Status</strong>: <%= @bulk_update_request.status %></li>
+      <li><strong title="How many posts will be affected">Estimate</strong>: <%= @bulk_update_request.estimate_update_count %></li>
 
       <% if CurrentUser.is_admin? && @bulk_update_request.is_pending? %>
         <li><strong>Commands</strong> <%= link_to "Approve", approve_bulk_update_request_path(@bulk_update_request), :method => :post %></li>
diff --git a/test/test_helpers/saved_search_test_helper.rb b/test/test_helpers/saved_search_test_helper.rb
index f36543852..ff924732a 100644
--- a/test/test_helpers/saved_search_test_helper.rb
+++ b/test/test_helpers/saved_search_test_helper.rb
@@ -1,21 +1,5 @@
 module SavedSearchTestHelper
   def mock_saved_search_service!
-    mock_sqs_service = Class.new do
-      def initialize
-        @commands = []
-      end
-
-      def commands
-        @commands
-      end
-
-      def send_message(msg)
-        @commands << msg.split(/\n/).first
-      end
-    end
-
-    service = mock_sqs_service.new
-    SavedSearch.stubs(:sqs_service).returns(service)
-    Danbooru.config.stubs(:aws_sqs_saved_search_url).returns("http://localhost:3002")
+    SavedSearch.stubs(:enabled?).returns(true)
   end
 end
diff --git a/test/unit/alias_and_implication_importer_test.rb b/test/unit/alias_and_implication_importer_test.rb
index b7a371f7b..5690e11db 100644
--- a/test/unit/alias_and_implication_importer_test.rb
+++ b/test/unit/alias_and_implication_importer_test.rb
@@ -26,6 +26,28 @@ class AliasAndImplicationImporterTest < ActiveSupport::TestCase
       end
     end
 
+    context "#estimate_update_count" do
+      setup do
+        FactoryBot.create(:post, tag_string: "aaa")
+        FactoryBot.create(:post, tag_string: "bbb")
+        FactoryBot.create(:post, tag_string: "ccc")
+        FactoryBot.create(:post, tag_string: "ddd")
+        FactoryBot.create(:post, tag_string: "eee")
+
+        @script = "create alias aaa -> 000\n" +
+          "create implication bbb -> 111\n" +
+          "remove alias ccc -> 222\n" +
+          "remove implication ddd -> 333\n" +
+          "mass update eee -> 444\n"
+      end
+
+      subject { AliasAndImplicationImporter.new(@script, nil) }
+
+      should "return the correct count" do
+        assert_equal(3, subject.estimate_update_count)
+      end
+    end
+
     context "given a valid list" do
       setup do
         @list = "create alias abc -> def\ncreate implication aaa -> bbb\n"
diff --git a/test/unit/bulk_update_request_test.rb b/test/unit/bulk_update_request_test.rb
index 454b7f904..83c226465 100644
--- a/test/unit/bulk_update_request_test.rb
+++ b/test/unit/bulk_update_request_test.rb
@@ -13,6 +13,28 @@ class BulkUpdateRequestTest < ActiveSupport::TestCase
       CurrentUser.ip_addr = nil
     end
 
+    context "#estimate_update_count" do
+      setup do
+        FactoryBot.create(:post, tag_string: "aaa")
+        FactoryBot.create(:post, tag_string: "bbb")
+        FactoryBot.create(:post, tag_string: "ccc")
+        FactoryBot.create(:post, tag_string: "ddd")
+        FactoryBot.create(:post, tag_string: "eee")
+
+        @script = "create alias aaa -> 000\n" +
+          "create implication bbb -> 111\n" +
+          "remove alias ccc -> 222\n" +
+          "remove implication ddd -> 333\n" +
+          "mass update eee -> 444\n"
+      end
+
+      subject { BulkUpdateRequest.new(script: @script) }
+
+      should "return the correct count" do
+        assert_equal(3, subject.estimate_update_count)
+      end
+    end
+
     context "on approval" do
       setup do
         @script = %q(
diff --git a/test/unit/moderator/tag_batch_change_test.rb b/test/unit/moderator/tag_batch_change_test.rb
index 57b6bdd0b..141d6e394 100644
--- a/test/unit/moderator/tag_batch_change_test.rb
+++ b/test/unit/moderator/tag_batch_change_test.rb
@@ -20,6 +20,16 @@ module Moderator
         CurrentUser.ip_addr = nil
       end
 
+      context "#estimate_update_count" do
+        setup do
+          @change = TagBatchChange.new("aaa", "bbb", @user.id, "127.0.0.1")
+        end
+
+        should "find the correct count" do
+          assert_equal(1, @change.estimate_update_count)
+        end
+      end
+
       should "execute" do
         tag_batch_change = TagBatchChange.new("aaa", "bbb", @user.id, "127.0.0.1")
         tag_batch_change.perform
diff --git a/test/unit/tag_alias_test.rb b/test/unit/tag_alias_test.rb
index 937c0616c..2df827697 100644
--- a/test/unit/tag_alias_test.rb
+++ b/test/unit/tag_alias_test.rb
@@ -58,6 +58,17 @@ class TagAliasTest < ActiveSupport::TestCase
       end
     end
 
+    context "#estimate_update_count" do
+      setup do
+        FactoryBot.create(:post, tag_string: "aaa bbb ccc")
+        @alias = FactoryBot.create(:tag_alias, antecedent_name: "aaa", consequent_name: "bbb", status: "pending")
+      end
+
+      should "get the right count" do
+        assert_equal(1, @alias.estimate_update_count)
+      end
+    end
+
     context "on secondary validation" do
       should "warn about missing wiki pages" do
         ti = FactoryBot.build(:tag_alias, antecedent_name: "aaa", consequent_name: "bbb", skip_secondary_validations: false)
diff --git a/test/unit/tag_implication_test.rb b/test/unit/tag_implication_test.rb
index 0a62450fa..76e474852 100644
--- a/test/unit/tag_implication_test.rb
+++ b/test/unit/tag_implication_test.rb
@@ -54,6 +54,17 @@ class TagImplicationTest < ActiveSupport::TestCase
       end
     end
 
+    context "#estimate_update_count" do
+      setup do
+        FactoryBot.create(:post, tag_string: "aaa bbb ccc")
+        @implication = FactoryBot.create(:tag_implication, antecedent_name: "aaa", consequent_name: "bbb", status: "pending")
+      end
+
+      should "get the right count" do
+        assert_equal(1, @implication.estimate_update_count)
+      end
+    end
+
     context "on secondary validation" do
       should "warn if either tag is missing a wiki" do
         ti = FactoryBot.build(:tag_implication, antecedent_name: "aaa", consequent_name: "bbb", skip_secondary_validations: false)