diff --git a/app/controllers/orders_controller.rb b/app/controllers/orders_controller.rb
index 7ce04a8..9456dd9 100644
--- a/app/controllers/orders_controller.rb
+++ b/app/controllers/orders_controller.rb
@@ -126,6 +126,15 @@ class OrdersController < ApplicationController
     @total_amount = @order.total_amount_cents
     @expiring_soon = @order.expiring_soon?
 
+    # For free orders, automatically mark as paid and redirect to success
+    if @order.free?
+      @order.mark_as_paid!
+      session.delete(:pending_cart)
+      session.delete(:ticket_names)
+      session.delete(:draft_order_id)
+      return redirect_to order_path(@order), notice: "Vos billets gratuits ont été confirmés !"
+    end
+
     # Create Stripe checkout session if Stripe is configured
     if Rails.application.config.stripe[:secret_key].present?
       begin
diff --git a/app/helpers/tickets_helper.rb b/app/helpers/tickets_helper.rb
index 4722254..c661310 100644
--- a/app/helpers/tickets_helper.rb
+++ b/app/helpers/tickets_helper.rb
@@ -1,2 +1,9 @@
 module TicketsHelper
+  def format_ticket_price(price_cents)
+    if price_cents == 0
+      "Gratuit"
+    else
+      number_to_currency(price_cents / 100.0, unit: "€")
+    end
+  end
 end
diff --git a/app/models/order.rb b/app/models/order.rb
index 666a6a3..3c84bc7 100644
--- a/app/models/order.rb
+++ b/app/models/order.rb
@@ -116,6 +116,11 @@ class Order < ApplicationRecord
     promoter_payout_cents / 100.0
   end
 
+  # Check if order contains only free tickets
+  def free?
+    total_amount_cents == 0
+  end
+
   # Create Stripe invoice for accounting records
   #
   # This method creates a post-payment invoice in Stripe for accounting purposes
diff --git a/app/models/ticket.rb b/app/models/ticket.rb
index 51b0ae1..94b2508 100755
--- a/app/models/ticket.rb
+++ b/app/models/ticket.rb
@@ -9,7 +9,7 @@ class Ticket < ApplicationRecord
   validates :qr_code, presence: true, uniqueness: true
   validates :order_id, presence: true
   validates :ticket_type_id, presence: true
-  validates :price_cents, presence: true, numericality: { greater_than: 0 }
+  validates :price_cents, presence: true, numericality: { greater_than_or_equal_to: 0 }
   validates :status, presence: true, inclusion: { in: %w[draft active used expired refunded] }
   validates :first_name, presence: true
   validates :last_name, presence: true
diff --git a/app/models/ticket_type.rb b/app/models/ticket_type.rb
index f06cfd5..1274758 100755
--- a/app/models/ticket_type.rb
+++ b/app/models/ticket_type.rb
@@ -6,7 +6,7 @@ class TicketType < ApplicationRecord
   # Validations
   validates :name, presence: true, length: { minimum: 3, maximum: 50 }
   validates :description, presence: true, length: { minimum: 10, maximum: 500 }
-  validates :price_cents, presence: true, numericality: { greater_than: 0 }
+  validates :price_cents, presence: true, numericality: { greater_than_or_equal_to: 0 }
   validates :quantity, presence: true, numericality: { only_integer: true, greater_than: 0 }
   validates :sale_start_at, presence: true
   validates :sale_end_at, presence: true
@@ -48,6 +48,10 @@ class TicketType < ApplicationRecord
     [ quantity - tickets.count, 0 ].max
   end
 
+  def free?
+    price_cents == 0
+  end
+
   def sales_status
     return :draft if sale_start_at.nil? || sale_end_at.nil?
     return :expired if sale_end_at < Time.current
diff --git a/app/views/components/_ticket_card.html.erb b/app/views/components/_ticket_card.html.erb
index 11fe4d5..81c9056 100755
--- a/app/views/components/_ticket_card.html.erb
+++ b/app/views/components/_ticket_card.html.erb
@@ -7,7 +7,7 @@
       </div>
       <div class="text-right">
         <p class="text-xl font-bold text-purple-700 <%= "text-gray-400" if sold_out %>">
-          <%= number_to_currency(price_cents / 100.0, unit: "€") %>
+          <%= format_ticket_price(price_cents) %>
         </p>
       </div>
     </div>
diff --git a/app/views/promoter/ticket_types/edit.html.erb b/app/views/promoter/ticket_types/edit.html.erb
index 0f7e836..87fae02 100644
--- a/app/views/promoter/ticket_types/edit.html.erb
+++ b/app/views/promoter/ticket_types/edit.html.erb
@@ -81,7 +81,7 @@
             <div class="relative">
               <%= form.number_field :price_euros,
                   step: 0.01,
-                  min: 0.01,
+                  min: 0,
                   class: "w-full px-4 py-2 pl-8 border border-gray-300 rounded-lg focus:ring-2 focus:ring-purple-500 focus:border-transparent",
                   data: { "ticket-type-form-target": "price", action: "input->ticket-type-form#updateTotal" } %>
               <div class="absolute left-3 top-2.5 text-gray-500">€</div>
@@ -91,6 +91,8 @@
                 <i data-lucide="alert-triangle" class="w-4 h-4 inline mr-1"></i>
                 Modifier le prix n'affectera pas les billets déjà vendus
               </p>
+            <% else %>
+              <p class="mt-1 text-sm text-gray-500">Prix unitaire du billet (0€ pour un billet gratuit)</p>
             <% end %>
           </div>
 
diff --git a/app/views/promoter/ticket_types/new.html.erb b/app/views/promoter/ticket_types/new.html.erb
index dd57e59..bfa8077 100644
--- a/app/views/promoter/ticket_types/new.html.erb
+++ b/app/views/promoter/ticket_types/new.html.erb
@@ -66,14 +66,14 @@
           <div>
             <%= form.label :price_euros, "Prix (€)", class: "block text-sm font-medium text-gray-700 mb-2" %>
             <div class="relative">
-              <%= form.number_field :price_euros, 
-                  step: 0.01, 
-                  min: 0.01, 
+              <%= form.number_field :price_euros,
+                  step: 0.01,
+                  min: 0,
                   class: "w-full px-4 py-2 pl-8 border border-gray-300 rounded-lg focus:ring-2 focus:ring-purple-500 focus:border-transparent",
                   data: { "ticket-type-form-target": "price", action: "input->ticket-type-form#updateTotal" } %>
               <div class="absolute left-3 top-2.5 text-gray-500">€</div>
             </div>
-            <p class="mt-1 text-sm text-gray-500">Prix unitaire du billet</p>
+            <p class="mt-1 text-sm text-gray-500">Prix unitaire du billet (0€ pour un billet gratuit)</p>
           </div>
           
           <div>
diff --git a/app/views/promoter/ticket_types/show.html.erb b/app/views/promoter/ticket_types/show.html.erb
index fea82b3..a5d1fe1 100644
--- a/app/views/promoter/ticket_types/show.html.erb
+++ b/app/views/promoter/ticket_types/show.html.erb
@@ -138,7 +138,7 @@
                 </div>
                 <div class="text-right">
                   <p class="text-sm font-medium text-gray-900">
-                    <%= number_to_currency(ticket.price_cents / 100.0, unit: "€") %>
+                    <%= format_ticket_price(ticket.price_cents) %>
                   </p>
                   <p class="text-xs text-gray-500">
                     <%= ticket.created_at.strftime("%d/%m/%Y") %>
@@ -164,7 +164,7 @@
         <div class="space-y-4">
           <div class="text-center p-4 bg-purple-50 rounded-lg">
             <div class="text-3xl font-bold text-purple-600">
-              <%= number_to_currency(@ticket_type.price_euros, unit: "€") %>
+              <%= format_ticket_price(@ticket_type.price_cents) %>
             </div>
             <div class="text-sm text-gray-500">Prix unitaire</div>
           </div>
diff --git a/app/views/ticket_mailer/purchase_confirmation.html.erb b/app/views/ticket_mailer/purchase_confirmation.html.erb
index fbb52e2..7f276a6 100755
--- a/app/views/ticket_mailer/purchase_confirmation.html.erb
+++ b/app/views/ticket_mailer/purchase_confirmation.html.erb
@@ -57,7 +57,7 @@
                 <p style="margin: 5px 0 0;"><a href="<%= ticket_url(ticket) %>" style="color: #4c1d95; text-decoration: none; font-size: 14px;">📱 Voir le détail et le code QR</a></p>
               </div>
               <div style="text-align: right;">
-                <p style="margin: 0; font-weight: bold; color: #212529;"><%= number_to_currency(ticket.price_cents / 100.0, unit: "€") %></p>
+                <p style="margin: 0; font-weight: bold; color: #212529;"><%= format_ticket_price(ticket.price_cents) %></p>
               </div>
             </div>
           </div>
@@ -83,7 +83,7 @@
           </div>
           <div style="text-align: right;">
             <p style="margin: 0; color: #6c757d; font-size: 14px;">Prix</p>
-            <p style="margin: 5px 0 0; font-weight: bold; color: #212529;"><%= number_to_currency(@ticket.price_cents / 100.0, unit: "€") %></p>
+            <p style="margin: 5px 0 0; font-weight: bold; color: #212529;"><%= format_ticket_price(@ticket.price_cents) %></p>
           </div>
         </div>
 
diff --git a/app/views/ticket_mailer/purchase_confirmation.text.erb b/app/views/ticket_mailer/purchase_confirmation.text.erb
index b4d9c78..3329cb9 100755
--- a/app/views/ticket_mailer/purchase_confirmation.text.erb
+++ b/app/views/ticket_mailer/purchase_confirmation.text.erb
@@ -13,11 +13,11 @@ DÉTAILS DE VOTRE COMMANDE
 Événement : <%= @event.name %>
 Date & heure : <%= @event.start_time.strftime("%d %B %Y à %H:%M") %>
 Nombre de billets : <%= @tickets.count %>
-Total : <%= number_to_currency(@order.total_amount_euros, unit: "€") %>
+Total : <%= @order.free? ? "Gratuit" : number_to_currency(@order.total_amount_euros, unit: "€") %>
 
 BILLETS INCLUS :
 <% @tickets.each_with_index do |ticket, index| %>
-- Billet #<%= index + 1 %> : <%= ticket.ticket_type.name %> - <%= number_to_currency(ticket.price_cents / 100.0, unit: "€") %>
+- Billet #<%= index + 1 %> : <%= ticket.ticket_type.name %> - <%= format_ticket_price(ticket.price_cents) %>
 <% end %>
 
 Vos billets sont attachés à cet email en format PDF. Présentez-les à l'entrée de l'événement pour y accéder.
@@ -32,7 +32,7 @@ DÉTAILS DE VOTRE BILLET
 Événement : <%= @event.name %>
 Type de billet : <%= @ticket.ticket_type.name %>
 Date & heure : <%= @event.start_time.strftime("%d %B %Y à %H:%M") %>
-Prix : <%= number_to_currency(@ticket.price_cents / 100.0, unit: "€") %>
+Prix : <%= format_ticket_price(@ticket.price_cents) %>
 
 Votre billet est attaché à cet email en format PDF. Présentez-le à l'entrée de l'événement pour y accéder.
 
diff --git a/app/views/tickets/show.html.erb b/app/views/tickets/show.html.erb
index 94da8ac..cba7c3f 100644
--- a/app/views/tickets/show.html.erb
+++ b/app/views/tickets/show.html.erb
@@ -80,7 +80,7 @@
               <div>
                 <label class="block text-sm font-medium text-gray-500 mb-1">Prix</label>
                 <p class="text-xl font-bold text-gray-900">
-                  <%= number_to_currency(@ticket.price_euros, unit: "€", separator: ",", delimiter: " ", format: "%n %u") %>
+                  <%= format_ticket_price(@ticket.price_cents) %>
                 </p>
               </div>
             </div>
diff --git a/test/controllers/orders_controller_test.rb b/test/controllers/orders_controller_test.rb
index aaa6a3c..1cb416d 100644
--- a/test/controllers/orders_controller_test.rb
+++ b/test/controllers/orders_controller_test.rb
@@ -125,7 +125,7 @@ class OrdersControllerTest < ActionDispatch::IntegrationTest
     assert_equal "draft", new_order.status
     assert_equal @user, new_order.user
     assert_equal @event, new_order.event
-    assert_equal @ticket_type.price_cents + 100, new_order.total_amount_cents # includes 1€ service fee
+    assert_equal @ticket_type.price_cents, new_order.total_amount_cents # Service fee deducted from promoter payout, not added to customer
 
     assert_redirected_to checkout_order_path(new_order)
     assert_equal new_order.id, session[:draft_order_id]
diff --git a/test/models/order_test.rb b/test/models/order_test.rb
index 6db2124..0a67b6b 100644
--- a/test/models/order_test.rb
+++ b/test/models/order_test.rb
@@ -603,4 +603,22 @@ class OrderTest < ActiveSupport::TestCase
     result = order.stripe_invoice_pdf_url
     assert_nil result
   end
+
+  test "free? should return true for zero amount orders" do
+    free_order = Order.create!(
+      user: @user, event: @event, total_amount_cents: 0,
+      status: "draft", payment_attempts: 0
+    )
+
+    assert free_order.free?
+  end
+
+  test "free? should return false for non-zero amount orders" do
+    paid_order = Order.create!(
+      user: @user, event: @event, total_amount_cents: 1000,
+      status: "draft", payment_attempts: 0
+    )
+
+    assert_not paid_order.free?
+  end
 end
diff --git a/test/models/ticket_type_test.rb b/test/models/ticket_type_test.rb
index 3aea6b0..0b3caf3 100755
--- a/test/models/ticket_type_test.rb
+++ b/test/models/ticket_type_test.rb
@@ -244,4 +244,38 @@ class TicketTypeTest < ActiveSupport::TestCase
     )
     assert_not ticket_type.save
   end
+
+  test "should allow free tickets with zero price" do
+    user = User.create!(
+      email: "test@example.com",
+      password: "password123",
+      password_confirmation: "password123"
+    )
+
+    event = Event.create!(
+      name: "Test Event",
+      slug: "test-event",
+      description: "Valid description for the event that is long enough",
+      latitude: 48.8566,
+      longitude: 2.3522,
+      venue_name: "Test Venue",
+      venue_address: "123 Test Street",
+      user: user
+    )
+
+    ticket_type = TicketType.new(
+      name: "Free Ticket",
+      description: "Valid description for the free ticket type",
+      price_cents: 0,
+      quantity: 50,
+      sale_start_at: Time.current,
+      sale_end_at: Time.current + 1.day,
+      event: event
+    )
+
+    assert ticket_type.save
+    assert ticket_type.free?
+    assert_equal 0, ticket_type.price_cents
+    assert_equal 0.0, ticket_type.price_euros
+  end
 end