diff --git a/app/controllers/splits_controller.rb b/app/controllers/splits_controller.rb
index a62540e9d..e31b64596 100644
--- a/app/controllers/splits_controller.rb
+++ b/app/controllers/splits_controller.rb
@@ -16,7 +16,7 @@ class SplitsController < ApplicationController
     raw_splits = raw_splits.values if raw_splits.respond_to?(:values)
 
     splits = raw_splits.map do |s|
-      { name: s[:name], amount: s[:amount].to_d * -1, category_id: s[:category_id].presence }
+      { name: s[:name], amount: s[:amount].to_d * -1, category_id: s[:category_id].presence, excluded: s[:excluded] }
     end
 
     @entry.split!(splits)
@@ -51,7 +51,7 @@ class SplitsController < ApplicationController
     raw_splits = raw_splits.values if raw_splits.respond_to?(:values)
 
     splits = raw_splits.map do |s|
-      { name: s[:name], amount: s[:amount].to_d * -1, category_id: s[:category_id].presence }
+      { name: s[:name], amount: s[:amount].to_d * -1, category_id: s[:category_id].presence, excluded: s[:excluded] }
     end
 
     Entry.transaction do
@@ -95,6 +95,6 @@ class SplitsController < ApplicationController
     end
 
     def split_params
-      params.require(:split).permit(splits: [ :name, :amount, :category_id ])
+      params.require(:split).permit(splits: [ :name, :amount, :category_id, :excluded ])
     end
 end
diff --git a/app/controllers/transaction_categories_controller.rb b/app/controllers/transaction_categories_controller.rb
index 6a8ff353a..d9daf436a 100644
--- a/app/controllers/transaction_categories_controller.rb
+++ b/app/controllers/transaction_categories_controller.rb
@@ -21,6 +21,7 @@ class TransactionCategoriesController < ApplicationController
     transaction.lock_saved_attributes!
     @entry.lock_saved_attributes!
 
+    in_split_group = helpers.in_split_group?(@entry, params[:grouped])
     respond_to do |format|
       format.html { redirect_back_or_to transaction_path(@entry) }
       format.turbo_stream do
@@ -28,12 +29,12 @@ class TransactionCategoriesController < ApplicationController
           turbo_stream.replace(
             dom_id(transaction, "category_menu_mobile"),
             partial: "transactions/transaction_category",
-            locals: { transaction: transaction, variant: "mobile" }
+            locals: { transaction: transaction, variant: "mobile", in_split_group: in_split_group }
           ),
           turbo_stream.replace(
             dom_id(transaction, "category_menu_desktop"),
             partial: "transactions/transaction_category",
-            locals: { transaction: transaction, variant: "desktop" }
+            locals: { transaction: transaction, variant: "desktop", in_split_group: in_split_group }
           ),
           turbo_stream.replace(
             "category_name_mobile_#{transaction.id}",
diff --git a/app/controllers/transactions_controller.rb b/app/controllers/transactions_controller.rb
index 944744d06..d88ee1bcf 100644
--- a/app/controllers/transactions_controller.rb
+++ b/app/controllers/transactions_controller.rb
@@ -142,6 +142,7 @@ class TransactionsController < ApplicationController
       respond_to do |format|
         format.html { redirect_back_or_to account_path(@entry.account), notice: "Transaction updated" }
         format.turbo_stream do
+          in_split_group = helpers.in_split_group?(@entry, params[:grouped])
           render turbo_stream: [
             turbo_stream.replace(
               dom_id(@entry, :header),
@@ -158,7 +159,11 @@ class TransactionsController < ApplicationController
               partial: "transactions/notes",
               locals: { entry: @entry, can_annotate: can_annotate_entry? }
             ) if params[:entry]&.key?(:notes) && notes_changed),
-            turbo_stream.replace(@entry),
+            turbo_stream.replace(
+              dom_id(@entry),
+              partial: "entries/entry",
+              locals: { entry: @entry, in_split_group: in_split_group }
+            ),
             *flash_notification_stream_items
           ].compact
         end
diff --git a/app/helpers/transactions_helper.rb b/app/helpers/transactions_helper.rb
index 92ce26c81..b9ea06d35 100644
--- a/app/helpers/transactions_helper.rb
+++ b/app/helpers/transactions_helper.rb
@@ -20,6 +20,10 @@ module TransactionsHelper
     transaction_search_filters[0]
   end
 
+  def in_split_group?(entry, params_grouped)
+    entry.split_child? && Current.user.show_split_grouped? && params_grouped == "true"
+  end
+
   # ---- Transaction extra details helpers ----
   # Returns a structured hash describing extra details for a transaction.
   # Input can be a Transaction or an Entry (responds_to :transaction).
diff --git a/app/models/entry.rb b/app/models/entry.rb
index aaf079059..5dbcf2090 100644
--- a/app/models/entry.rb
+++ b/app/models/entry.rb
@@ -1,6 +1,9 @@
 class Entry < ApplicationRecord
   include Monetizable, Enrichable
 
+  TRUTHY_VALUES = [ true, "true", "1", 1 ].freeze
+  private_constant :TRUTHY_VALUES
+
   attr_accessor :unsplitting
 
   monetize :amount
@@ -361,7 +364,7 @@ class Entry < ApplicationRecord
 
   # Splits this entry into child entries. Marks parent as excluded.
   #
-  # @param splits [Array<Hash>] array of { name:, amount:, category_id: } hashes
+  # @param splits [Array<Hash>] array of { name:, amount:, category_id:, excluded: } hashes
   # @return [Array<Entry>] the created child entries
   def split!(splits)
     total = splits.sum { |s| s[:amount].to_d }
@@ -383,6 +386,7 @@ class Entry < ApplicationRecord
           name: split_attrs[:name],
           amount: split_attrs[:amount],
           currency: currency,
+          excluded: TRUTHY_VALUES.include?(split_attrs[:excluded]),
           entryable: child_transaction
         )
       end
diff --git a/app/views/categories/_menu.html.erb b/app/views/categories/_menu.html.erb
index 6af5a8ce8..e3f8598b6 100644
--- a/app/views/categories/_menu.html.erb
+++ b/app/views/categories/_menu.html.erb
@@ -1,4 +1,4 @@
-<%# locals: (transaction:) %>
+<%# locals: (transaction:, in_split_group: false) %>
 
 <%= render DS::Menu.new(variant: "button") do |menu| %>
   <% menu.with_button(class: "block w-full overflow-hidden") do %>
@@ -11,7 +11,7 @@
   <% end %>
 
   <% menu.with_custom_content do %>
-    <%= turbo_frame_tag "category_dropdown", src: category_dropdown_path(category_id: transaction.category_id, transaction_id: transaction.id), loading: :lazy do %>
+    <%= turbo_frame_tag "category_dropdown", src: category_dropdown_path(category_id: transaction.category_id, transaction_id: transaction.id, grouped: in_split_group), loading: :lazy do %>
       <div class="p-6 flex items-center justify-center">
         <p class="text-sm text-secondary animate-pulse"><%= t(".loading") %></p>
       </div>
diff --git a/app/views/category/dropdowns/_row.html.erb b/app/views/category/dropdowns/_row.html.erb
index fbf6cf421..d9fab35e5 100644
--- a/app/views/category/dropdowns/_row.html.erb
+++ b/app/views/category/dropdowns/_row.html.erb
@@ -10,6 +10,7 @@
       data: { filter_name: category.name } do %>
   <%= button_to transaction_category_path(
         @transaction.entry,
+        grouped: params[:grouped],
         entry: {
           entryable_type: "Transaction",
           entryable_attributes: { id: @transaction.id, category_id: category.id }
diff --git a/app/views/category/dropdowns/show.html.erb b/app/views/category/dropdowns/show.html.erb
index 234c31463..91ada562e 100644
--- a/app/views/category/dropdowns/show.html.erb
+++ b/app/views/category/dropdowns/show.html.erb
@@ -51,7 +51,7 @@
           <%= button_to transaction_path(@transaction.entry),
                       method: :patch,
                       data: { turbo_frame: dom_id(@transaction.entry) },
-                      params: { entry: { entryable_type: "Transaction", entryable_attributes: { id: @transaction.id, category_id: nil } } },
+                      params: { grouped: params[:grouped], entry: { entryable_type: "Transaction", entryable_attributes: { id: @transaction.id, category_id: nil } } },
                       class: "flex text-sm font-medium items-center gap-2 text-secondary w-full rounded-lg p-2 hover:bg-container-inset-hover" do %>
             <%= icon("minus") %>
 
@@ -85,6 +85,7 @@
                         method: :patch,
                         data: { controller: "auto-submit-form" } do |f| %>
               <%= f.hidden_field "entry[excluded]", value: !@transaction.entry.excluded %>
+              <%= hidden_field_tag :grouped, "true" if params[:grouped] == "true" %>
               <%= f.check_box "entry[excluded]",
                           checked: @transaction.entry.excluded,
                           class: "checkbox checkbox--light",
diff --git a/app/views/entries/_entry.html.erb b/app/views/entries/_entry.html.erb
index 3c3f83fa3..5ba08622e 100644
--- a/app/views/entries/_entry.html.erb
+++ b/app/views/entries/_entry.html.erb
@@ -1,6 +1,6 @@
-<%# locals: (entry:, balance_trend: nil, view_ctx: "global") %>
+<%# locals: (entry:, balance_trend: nil, view_ctx: "global", in_split_group: false) %>
 
 <% if entry.entryable.present? %>
   <%= render partial: entry.entryable.to_partial_path,
-             locals: { entry: entry, balance_trend: balance_trend, view_ctx: view_ctx } %>
+             locals: { entry: entry, balance_trend: balance_trend, view_ctx: view_ctx, in_split_group: in_split_group } %>
 <% end %>
diff --git a/app/views/transactions/_notes.html.erb b/app/views/transactions/_notes.html.erb
index 2d6114c0b..7e32b9156 100644
--- a/app/views/transactions/_notes.html.erb
+++ b/app/views/transactions/_notes.html.erb
@@ -3,6 +3,7 @@
   <%= styled_form_with model: entry,
         url: transaction_path(entry),
         data: { controller: "auto-submit-form" } do |f| %>
+    <%= hidden_field_tag :grouped, "true" if params[:grouped] == "true" %>
     <%= f.text_area :notes,
             label: t("transactions.show.note_label"),
             placeholder: t("transactions.show.note_placeholder"),
diff --git a/app/views/transactions/_transaction.html.erb b/app/views/transactions/_transaction.html.erb
index 551c56138..8ee5761c1 100644
--- a/app/views/transactions/_transaction.html.erb
+++ b/app/views/transactions/_transaction.html.erb
@@ -19,7 +19,7 @@
             } %>
 
         <div class="flex md:hidden items-center gap-1 col-span-2 relative shrink-0">
-          <%= render "transactions/transaction_category", transaction: transaction, variant: "mobile" %>
+          <%= render "transactions/transaction_category", transaction: transaction, variant: "mobile", in_split_group: in_split_group %>
           <% if transaction.merchant&.logo_url.present? %>
             <%= image_tag Setting.transform_brand_fetch_url(transaction.merchant.logo_url),
                 class: "w-5 h-5 rounded-full absolute -bottom-1 -right-1 border border-secondary pointer-events-none",
@@ -70,7 +70,7 @@
                     <% else %>
                       <%= link_to(
                             entry.name,
-                            entry_path(entry),
+                            in_split_group ? entry_path(entry, grouped: true) : entry_path(entry),
                             data: {
                               turbo_frame: "drawer",
                               turbo_prefetch: false
@@ -163,7 +163,7 @@
           <%# For investment accounts, show activity label instead of category %>
           <%= render "investment_activity/quick_edit_badge", entry: entry, entryable: transaction %>
         <% else %>
-          <%= render "transactions/transaction_category", transaction: transaction, variant: "desktop" %>
+          <%= render "transactions/transaction_category", transaction: transaction, variant: "desktop", in_split_group: in_split_group %>
         <% end %>
       </div>
 
diff --git a/app/views/transactions/_transaction_category.html.erb b/app/views/transactions/_transaction_category.html.erb
index 434e422af..0d7301633 100644
--- a/app/views/transactions/_transaction_category.html.erb
+++ b/app/views/transactions/_transaction_category.html.erb
@@ -1,8 +1,8 @@
-<%# locals: (transaction:, variant:) %>
+<%# locals: (transaction:, variant:, in_split_group: false) %>
 
 <div id="<%= dom_id(transaction, "category_menu_#{variant}") %>" class="min-w-0 overflow-hidden">
   <% if transaction.transfer&.categorizable? || transaction.transfer.nil? %>
-    <%= render "categories/menu", transaction: transaction %>
+    <%= render "categories/menu", transaction: transaction, in_split_group: in_split_group %>
   <% else %>
     <div class="hidden lg:flex">
       <%= render "categories/badge", category: transaction.transfer&.payment? ? payment_category :  transfer_category %>
diff --git a/app/views/transactions/show.html.erb b/app/views/transactions/show.html.erb
index 25aa00059..ce50ed4d7 100644
--- a/app/views/transactions/show.html.erb
+++ b/app/views/transactions/show.html.erb
@@ -54,6 +54,7 @@
               url: transaction_path(@entry),
               class: "space-y-2",
               data: { controller: "auto-submit-form" } do |f| %>
+          <%= hidden_field_tag :grouped, "true" if params[:grouped] == "true" %>
           <%= f.text_field :name,
                 label: t(".name_label"),
                 disabled: @entry.split_child? || edit_locked,
@@ -95,6 +96,7 @@
             url: transaction_path(@entry),
             class: "space-y-2",
             data: { controller: "auto-submit-form" } do |f| %>
+        <%= hidden_field_tag :grouped, "true" if params[:grouped] == "true" %>
         <% unless @entry.transaction.transfer? %>
           <%= f.select :account,
               options_for_select(
@@ -262,12 +264,13 @@
 
     <% if can_edit_entry? %>
       <% dialog.with_section(title: t(".settings")) do %>
-        <% unless @entry.split_parent? || @entry.split_child? %>
+        <% unless @entry.split_parent? %>
           <div class="pb-4">
             <%= styled_form_with model: @entry,
                   url: transaction_path(@entry),
                   class: "p-3",
                   data: { controller: "auto-submit-form" } do |f| %>
+              <%= hidden_field_tag :grouped, "true" if params[:grouped] == "true" %>
               <div class="flex cursor-pointer items-center gap-4 justify-between">
                 <div class="text-sm space-y-1">
                   <h4 class="text-primary"><%= t(".exclude") %></h4>
@@ -284,6 +287,7 @@
                   url: transaction_path(@entry),
                   class: "p-3",
                   data: { controller: "auto-submit-form" } do |f| %>
+              <%= hidden_field_tag :grouped, "true" if params[:grouped] == "true" %>
               <%= f.fields_for :entryable do |ef| %>
                 <div class="flex cursor-pointer items-center gap-4 justify-between">
                   <div class="text-sm space-y-1">
@@ -309,6 +313,7 @@
                   url: transaction_path(@entry),
                   class: "p-3",
                   data: { controller: "auto-submit-form" } do |f| %>
+              <%= hidden_field_tag :grouped, "true" if params[:grouped] == "true" %>
               <%= f.fields_for :entryable do |ef| %>
                 <div class="flex cursor-pointer items-center gap-4 justify-between">
                   <div class="text-sm space-y-1">
diff --git a/test/controllers/splits_controller_test.rb b/test/controllers/splits_controller_test.rb
index 6a0cb3dad..5cb89a9ff 100644
--- a/test/controllers/splits_controller_test.rb
+++ b/test/controllers/splits_controller_test.rb
@@ -120,6 +120,26 @@ class SplitsControllerTest < ActionDispatch::IntegrationTest
     assert_response :success
   end
 
+  test "create with excluded parameter sets child as excluded" do
+    assert_difference "Entry.count", 2 do
+      post transaction_split_path(@entry), params: {
+        split: {
+          splits: [
+            { name: "Groceries", amount: "-70", category_id: categories(:food_and_drink).id, excluded: "true" },
+            { name: "Household", amount: "-30", category_id: "", excluded: "false" }
+          ]
+        }
+      }
+    end
+
+    assert_redirected_to transactions_url
+    children = @entry.child_entries.order(:amount)
+    # Household has amount 30 (smaller), Groceries has amount 70 (larger)
+    # Household is NOT excluded, Groceries IS excluded
+    refute children.first.excluded?
+    assert children.last.excluded?
+  end
+
   # Edit action tests
   test "edit renders with existing children pre-filled" do
     @entry.split!([
@@ -193,6 +213,27 @@ class SplitsControllerTest < ActionDispatch::IntegrationTest
     assert_equal 2, @entry.reload.child_entries.count
   end
 
+  test "update with excluded parameter sets child as excluded" do
+    @entry.split!([
+      { name: "Groceries", amount: 70, category_id: nil },
+      { name: "Household", amount: 30, category_id: nil }
+    ])
+
+    patch transaction_split_path(@entry), params: {
+      split: {
+        splits: [
+          { name: "Groceries", amount: "-70", category_id: "", excluded: "true" },
+          { name: "Household", amount: "-30", category_id: "", excluded: "false" }
+        ]
+      }
+    }
+
+    assert_redirected_to transactions_url
+    children = @entry.child_entries.order(:amount)
+    refute children.first.excluded?
+    assert children.last.excluded?
+  end
+
   # Destroy from child tests
   test "destroy from child resolves to parent and unsplits" do
     @entry.split!([
diff --git a/test/models/entry_split_test.rb b/test/models/entry_split_test.rb
index c9869210d..a7efa4d09 100644
--- a/test/models/entry_split_test.rb
+++ b/test/models/entry_split_test.rb
@@ -174,4 +174,51 @@ class EntrySplitTest < ActiveSupport::TestCase
     assert children.first.split_child?
     refute @entry.split_child?
   end
+
+  test "split! creates child entries with excluded: true when specified" do
+    splits = [
+      { name: "Part 1", amount: 50, category_id: nil, excluded: true },
+      { name: "Part 2", amount: 50, category_id: nil, excluded: false }
+    ]
+
+    children = @entry.split!(splits)
+
+    assert_equal 2, children.size
+    assert children.first.excluded?
+    refute children.last.excluded?
+  end
+
+  test "split! properly casts excluded from string values" do
+    splits = [
+      { name: "Part 1", amount: 50, category_id: nil, excluded: "true" },
+      { name: "Part 2", amount: 50, category_id: nil, excluded: "false" }
+    ]
+
+    children = @entry.split!(splits)
+
+    assert children.first.excluded?
+    refute children.last.excluded?
+  end
+
+  test "excluded split children are excluded from balance calculations" do
+    @entry.split!([
+      { name: "Part 1", amount: 50, category_id: nil, excluded: true },
+      { name: "Part 2", amount: 50, category_id: nil, excluded: false }
+    ])
+
+    # Parent is always excluded for splits
+    assert @entry.reload.excluded?
+
+    # Excluded child should be filtered out by where(excluded: false)
+    excluded_child = @entry.child_entries.find { |c| c.name == "Part 1" }
+    non_excluded_child = @entry.child_entries.find { |c| c.name == "Part 2" }
+
+    assert excluded_child.excluded?
+    refute non_excluded_child.excluded?
+
+    # where(excluded: false) should only include the non-excluded child
+    visible_entries = Entry.where(id: @entry.child_entries.map(&:id)).where(excluded: false)
+    assert_includes visible_entries.pluck(:id), non_excluded_child.id
+    refute_includes visible_entries.pluck(:id), excluded_child.id
+  end
 end