diff --git a/app/helpers/collection_resources_helper.rb b/app/helpers/collection_resources_helper.rb
index e1fb6cf2b..ad2e8917b 100644
--- a/app/helpers/collection_resources_helper.rb
+++ b/app/helpers/collection_resources_helper.rb
@@ -1,5 +1,7 @@
 module CollectionResourcesHelper
   include CollectionTimeHelper
+  include GovukLinkHelper
+  include GovukVisuallyHiddenHelper
 
   HUMAN_READABLE_CONTENT_TYPE = { "application/pdf": "PDF",
                                   "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet": "Microsoft Excel",
@@ -66,4 +68,16 @@ module CollectionResourcesHelper
   def file_exists_on_s3?(file)
     CollectionResourcesService.new.file_exists_on_s3?(file)
   end
+
+  def display_next_year_banner?
+    editable_collection_resource_years.include?(next_collection_start_year)
+  end
+
+  def next_year_banner_text(lettings_resources, sales_resources)
+    if lettings_resources[next_collection_start_year].map(&:download_filename).all? { |file| file_exists_on_s3?(file) } && sales_resources[next_collection_start_year].map(&:download_filename).all? { |file| file_exists_on_s3?(file) }
+      govuk_link_to "Release the #{text_year_range_format(next_collection_start_year)} collection resources to users", release_mandatory_collection_resources_path(year: next_collection_start_year), class: "govuk-link"
+    else
+      "Once you have uploaded all the required #{text_year_range_format(next_collection_start_year)} collection resources, you will be able to release them to users."
+    end
+  end
 end
diff --git a/app/views/collection_resources/index.html.erb b/app/views/collection_resources/index.html.erb
index f6a999e59..f6785eb46 100644
--- a/app/views/collection_resources/index.html.erb
+++ b/app/views/collection_resources/index.html.erb
@@ -4,6 +4,14 @@
   <%= govuk_back_link(href: :back) %>
 <% end %>
 
+<% if display_next_year_banner? %>
+  <%= govuk_notification_banner(title_text: "Important") do %>
+    <p class="govuk-notification-banner__heading govuk-!-width-full" style="max-width: fit-content">
+      The <%= text_year_range_format(next_collection_start_year) %> collection resources are not yet available to users.
+    <p>
+    <%= next_year_banner_text(@mandatory_lettings_collection_resources_per_year, @mandatory_sales_collection_resources_per_year) %>
+  <% end %>
+<% end %>
 <h1 class="govuk-heading-l"><%= title %></h1>
 
 <% @mandatory_lettings_collection_resources_per_year.each do |year, mandatory_resources| %>
diff --git a/config/routes.rb b/config/routes.rb
index 3fa83458a..c8e1c40f5 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -44,6 +44,7 @@ Rails.application.routes.draw do
   get "/collection-resources/:log_type/:year/:resource_type/download", to: "collection_resources#download_mandatory_collection_resource", as: :download_mandatory_collection_resource
   get "/collection-resources/:log_type/:year/:resource_type/edit", to: "collection_resources#edit", as: :edit_mandatory_collection_resource
   patch "/collection-resources", to: "collection_resources#update", as: :update_mandatory_collection_resource
+  get "/collection-resources/:year/release", to: "collection_resources#release_mandatory_resources", as: :release_mandatory_collection_resources
 
   resources :collection_resources, path: "/collection-resources" do
     get "/download", to: "collection_resources#download_additional_collection_resource" # when we get to adding them
diff --git a/spec/helpers/collection_resources_helper_spec.rb b/spec/helpers/collection_resources_helper_spec.rb
index 31033d997..05eef5a45 100644
--- a/spec/helpers/collection_resources_helper_spec.rb
+++ b/spec/helpers/collection_resources_helper_spec.rb
@@ -163,4 +163,54 @@ RSpec.describe CollectionResourcesHelper do
       ])
     end
   end
+
+  describe "#display_next_year_banner?" do
+    context "when next year is not editable" do
+      before do
+        allow(FormHandler.instance).to receive(:in_edit_crossover_period?).and_return(true)
+      end
+
+      it "returns false" do
+        expect(display_next_year_banner?).to be_falsey
+      end
+    end
+
+    context "when next year is editable" do
+      before do
+        allow(FormHandler.instance).to receive(:in_edit_crossover_period?).and_return(false)
+        allow(Time.zone).to receive(:today).and_return(Time.zone.local(2025, 1, 1))
+      end
+
+      it "returns true" do
+        expect(display_next_year_banner?).to be_truthy
+      end
+    end
+  end
+
+  describe "#next_year_banner_text" do
+    let(:lettings_resources) { MandatoryCollectionResourcesService.generate_resources("lettings", [next_collection_start_year]) }
+    let(:sales_resources) { MandatoryCollectionResourcesService.generate_resources("sales", [next_collection_start_year]) }
+
+    context "when all the mandatory resources for next year are uploaded" do
+      before do
+        WebMock.stub_request(:head, /https:\/\/core-test-collection-resources\.s3\.amazonaws\.com/)
+          .to_return(status: 200, body: "", headers: { "Content-Length" => 292_864, "Content-Type" => "application/pdf" })
+      end
+
+      it "returns correct text" do
+        expect(next_year_banner_text(lettings_resources, sales_resources)).to match(/Release the 2025 to 2026 collection resources to users/)
+      end
+    end
+
+    context "when some of the mandatory resources for next year are not uploaded" do
+      before do
+        WebMock.stub_request(:head, /https:\/\/core-test-collection-resources\.s3\.amazonaws\.com/)
+          .to_return(status: 404, body: "", headers: { "Content-Length" => 292_864, "Content-Type" => "application/pdf" })
+      end
+
+      it "returns correct text" do
+        expect(next_year_banner_text(lettings_resources, sales_resources)).to eq("Once you have uploaded all the required 2025 to 2026 collection resources, you will be able to release them to users.")
+      end
+    end
+  end
 end
diff --git a/spec/requests/collection_resources_controller_spec.rb b/spec/requests/collection_resources_controller_spec.rb
index 48a94ee7f..93b6755d6 100644
--- a/spec/requests/collection_resources_controller_spec.rb
+++ b/spec/requests/collection_resources_controller_spec.rb
@@ -108,6 +108,11 @@ RSpec.describe CollectionResourcesController, type: :request do
           expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_template"))
           expect(page).to have_link("Change", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_specification"))
         end
+
+        it "displays next year banner" do
+          expect(page).to have_content("The 2025 to 2026 collection resources are not yet available to users.")
+          expect(page).to have_link("Release the 2025 to 2026 collection resources to users", href: release_mandatory_collection_resources_path(year: 2025))
+        end
       end
 
       context "when files are not on S3" do
@@ -136,6 +141,11 @@ RSpec.describe CollectionResourcesController, type: :request do
           expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_template"))
           expect(page).to have_link("Upload", href: edit_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_specification"))
         end
+
+        it "displays next year banner" do
+          expect(page).to have_content("The 2025 to 2026 collection resources are not yet available to users.")
+          expect(page).to have_content("Once you have uploaded all the required 2025 to 2026 collection resources, you will be able to release them to users.")
+        end
       end
     end
   end