app/controllers/orders_controller.rb

@@ -293,18 +293,7 @@ class OrdersController < ApplicationController
       }
     end
 
-    # Add service fee as a separate line item
+    # No service fee added to customer; deducted from promoter payout
-    line_items << {
-      price_data: {
-        currency: "eur",
-        product_data: {
-          name: "Frais de service",
-          description: "Frais de traitement de la commande"
-        },
-        unit_amount: 100 # 1€ in cents
-      },
-      quantity: 1
-    }
 
     Stripe::Checkout::Session.create(
       payment_method_types: [ "card" ],

app/models/order.rb

@@ -88,11 +88,32 @@ class Order < ApplicationRecord
     end
   end
 
-  # Calculate total from tickets plus 1€ service fee
+  # Calculate total from ticket prices only (platform fee deducted from promoter payout)
   def calculate_total!
     ticket_total = tickets.sum(:price_cents)
-    fee_cents = 100 # 1€ in cents
+    update!(total_amount_cents: ticket_total)
-    update!(total_amount_cents: ticket_total + fee_cents)
+  end
+
+  # Platform fee: €0.50 fixed + 1.5% of ticket price, per ticket
+  def platform_fee_cents
+    tickets.sum do |ticket|
+      fixed_fee = 50 # €0.50 in cents
+      percentage_fee = (ticket.price_cents * 0.015).to_i
+      fixed_fee + percentage_fee
+    end
+  end
+
+  # Promoter payout amount after platform fee deduction
+  def promoter_payout_cents
+    total_amount_cents - platform_fee_cents
+  end
+
+  def platform_fee_euros
+    platform_fee_cents / 100.0
+  end
+
+  def promoter_payout_euros
+    promoter_payout_cents / 100.0
   end
 
   # Create Stripe invoice for accounting records

app/services/stripe_invoice_service.rb

@@ -166,19 +166,7 @@ class StripeInvoiceService
       })
     end
 
-    # Add service fee line item
+    # No service fee on customer invoice; platform fee deducted from promoter payout
-    service_fee_cents = 100 # 1€ service fee
-    Stripe::InvoiceItem.create({
-      customer: customer.id,
-      invoice: invoice.id,
-      amount: service_fee_cents,
-      currency: "eur",
-      description: "Frais de service - Frais de traitement de la commande",
-      metadata: {
-        item_type: "service_fee",
-        amount_cents: service_fee_cents
-      }
-    })
   end
 
   def build_line_item_description(ticket_type, tickets)

app/views/orders/checkout.html.erb

@@ -100,16 +100,8 @@
         </div>
 
         <!-- Order Total -->
-        <div class="border-t border-gray-200 pt-6">
+        <div class=" pt-12">
           <div class="space-y-2">
-            <div class="flex items-center justify-between">
-              <span class="text-gray-600">Sous-total</span>
-              <span class="text-gray-900"><%= @order.total_amount_euros - 1.0 %>€</span>
-            </div>
-            <div class="flex items-center justify-between">
-              <span class="text-gray-600">Frais de service</span>
-              <span class="text-gray-900">1.00€</span>
-            </div>
             <div class="flex items-center justify-between text-lg pt-2 border-t border-gray-200">
               <span class="font-medium text-gray-900">Total</span>
               <span class="font-bold text-2xl text-purple-600"><%= @order.total_amount_euros %>€</span>

app/views/orders/invoice.html.erb

@@ -119,12 +119,6 @@
                   <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900 text-right"><%= "%.2f" % (tickets.count * ticket_type.price_cents / 100.0) %>€</td>
                 </tr>
               <% end %>
-              <tr>
-                <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">Frais de service</td>
-                <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500 text-right">1</td>
-                <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500 text-right">1.00€</td>
-                <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900 text-right">1.00€</td>
-              </tr>
             </tbody>
             <tfoot class="bg-gray-50">
               <tr>

app/views/orders/show.html.erb

@@ -96,22 +96,12 @@
 
         <!-- Total -->
         <div class="border-t border-gray-200 pt-6 mt-6">
-          <div class="space-y-2">
-            <div class="flex items-center justify-between">
-              <span class="text-gray-600">Sous-total</span>
-              <span class="text-gray-900"><%= @order.total_amount_euros - 1.0 %>€</span>
-            </div>
-            <div class="flex items-center justify-between">
-              <span class="text-gray-600">Frais de service</span>
-              <span class="text-gray-900">1.00€</span>
-            </div>
             <div class="flex items-center justify-between text-lg pt-2 border-t border-gray-200">
               <span class="font-medium text-gray-900">Total <%= @order.status == 'paid' || @order.status == 'completed' ? 'payé' : 'à payer' %></span>
               <span class="font-bold text-2xl <%= @order.status == 'paid' || @order.status == 'completed' ? 'text-green-600' : 'text-purple-600' %>">
                 <%= @order.total_amount_euros %>€
               </span>
             </div>
-          </div>
         </div>
 
         <!-- View Invoice -->

docs/pricing-model-recommendations.md

@@ -3,28 +3,32 @@
 ## Current Problem Analysis
 
 ### Current Model: €1 Fixed Fee Per Order
+
 - **Revenue**: €1.00 per order (regardless of ticket price)
 - **Stripe Costs**: 1.15% + €0.25 per transaction
 - **Result**: Losing money on higher-priced tickets
 
 ### Financial Impact Examples
+
 | Ticket Price | Current Revenue | Stripe Fees | Net Profit/Loss |
-|--------------|----------------|-------------|-----------------|
+| ------------ | --------------- | ----------- | --------------- |
-| €20          | €1.00          | €0.48       | **+€0.52** ✅   |
+| €20          | €1.00           | €0.48       | **+€0.52** ✅   |
-| €50          | €1.00          | €0.83       | **+€0.17** ⚠️   |
+| €50          | €1.00           | €0.83       | **+€0.17** ⚠️   |
-| €100         | €1.00          | €1.40       | **-€0.40** ❌   |
+| €100         | €1.00           | €1.40       | **-€0.40** ❌   |
-| €200         | €1.00          | €2.55       | **-€1.55** ❌   |
+| €200         | €1.00           | €2.55       | **-€1.55** ❌   |
 
 **Critical Issue**: We lose money on any ticket above €65 (€1.00 - (€65 × 1.15% + €0.25) = -€0.00)
 
 ## Recommended Pricing Models
 
 ### Model 1: Percentage-Based (Recommended)
+
 ```
 Platform Fee = 3-5% of ticket price
 ```
 
 **Advantages:**
+
 - Always profitable regardless of ticket price
 - Scales naturally with event value
 - Simple for promoters to understand
@@ -33,17 +37,19 @@ Platform Fee = 3-5% of ticket price
 **Financial Impact:**
 | Ticket Price | 3.5% Fee | Stripe Costs | Net Profit |
 |--------------|----------|--------------|------------|
-| €20          | €0.70    | €0.48        | €0.22      |
+| €20 | €0.70 | €0.48 | €0.22 |
-| €50          | €1.75    | €0.83        | €0.92      |
+| €50 | €1.75 | €0.83 | €0.92 |
-| €100         | €3.50    | €1.40        | €2.10      |
+| €100 | €3.50 | €1.40 | €2.10 |
-| €200         | €7.00    | €2.55        | €4.45      |
+| €200 | €7.00 | €2.55 | €4.45 |
 
 ### Model 2: Hybrid Model (Best)
+
 ```
 Platform Fee = €1.50 + 2% of ticket price
 ```
 
 **Advantages:**
+
 - Higher base fee covers Stripe fixed costs
 - Percentage component scales with value
 - Better margins on low-priced tickets
@@ -52,12 +58,13 @@ Platform Fee = €1.50 + 2% of ticket price
 **Financial Impact:**
 | Ticket Price | Hybrid Fee | Stripe Costs | Net Profit |
 |--------------|------------|--------------|------------|
-| €20          | €1.90      | €0.48        | €1.42      |
+| €20 | €1.90 | €0.48 | €1.42 |
-| €50          | €2.50      | €0.83        | €1.67      |
+| €50 | €2.50 | €0.83 | €1.67 |
-| €100         | €3.50      | €1.40        | €2.10      |
+| €100 | €3.50 | €1.40 | €2.10 |
-| €200         | €5.50      | €2.55        | €2.95      |
+| €200 | €5.50 | €2.55 | €2.95 |
 
 ### Model 3: Tiered Flat Fees
+
 ```
 €0-25:   €1.50 fee
 €26-75:  €2.50 fee
@@ -66,32 +73,36 @@ Platform Fee = €1.50 + 2% of ticket price
 ```
 
 **Advantages:**
+
 - Predictable fees for promoters
 - Simple pricing tiers
 - Better than current model
 
 **Disadvantages:**
+
 - Less scalable than percentage
 - Requires tier management
 
 ## Industry Benchmarks
 
-| Platform    | Fee Structure              | Effective Rate (€50 ticket) |
+| Platform        | Fee Structure | Effective Rate (€50 ticket) |
-|-------------|----------------------------|------------------------------|
+| --------------- | ------------- | --------------------------- |
-| Eventbrite  | 3.7% + €0.59              | €2.44                        |
+| Eventbrite      | 3.7% + €0.59  | €2.44                       |
-| Universe    | 2.5% + €0.49              | €1.74                        |
+| Universe        | 2.5% + €0.49  | €1.74                       |
-| Ticketfly   | 4% + €0.99                | €2.99                        |
+| Ticketfly       | 4% + €0.99    | €2.99                       |
-| **Recommended** | **3.5%**              | **€1.75**                    |
+| **Recommended** | **3.5%**      | **€1.75**                   |
 
 ## Implementation Strategy
 
 ### Phase 1: Immediate Implementation (Week 1-2)
+
 1. **Switch to 3.5% percentage model** for new events
 2. **Grandfathering**: Existing published events keep €1 pricing
 3. **Communication**: Notify promoters 1 week before change
 4. **Update pricing display** on event creation and checkout pages
 
 ### Phase 2: Optimization (Month 2-3)
+
 1. **A/B Test different rates**: 3%, 3.5%, 4%
 2. **Monitor metrics**:
    - Promoter signup rate
@@ -101,6 +112,7 @@ Platform Fee = €1.50 + 2% of ticket price
 3. **Adjust based on data**
 
 ### Phase 3: Premium Tiers (Month 4-6)
+
 1. **Volume discounts** for high-performing promoters:
    - Standard: 3.5%
    - Bronze (€5K+ monthly): 3%
@@ -112,6 +124,7 @@ Platform Fee = €1.50 + 2% of ticket price
 ## Revenue Projections
 
 ### Current State (€1 fixed)
+
 - Average ticket price: €35
 - Monthly orders: 1,000
 - Monthly revenue: €1,000
@@ -119,11 +132,13 @@ Platform Fee = €1.50 + 2% of ticket price
 - **Net monthly profit: €372**
 
 ### With 3.5% Model
+
 - Monthly revenue: €1,225 (3.5% × €35 × 1,000)
 - Monthly Stripe costs: €628
 - **Net monthly profit: €597** (+60% increase)
 
 ### With Growth (3.5% model + 20% more events)
+
 - Monthly orders: 1,200 (20% growth from competitive pricing)
 - Monthly revenue: €1,470
 - **Net monthly profit: €842** (+126% increase)
@@ -131,6 +146,7 @@ Platform Fee = €1.50 + 2% of ticket price
 ## Technical Implementation
 
 ### Database Changes
+
 ```ruby
 # Add to events table
 add_column :events, :commission_rate, :decimal, precision: 5, scale: 4, default: 0.035
@@ -140,6 +156,7 @@ add_column :users, :commission_tier, :string, default: 'standard'
 ```
 
 ### Fee Calculation Logic
+
 ```ruby
 class Order < ApplicationRecord
   def calculate_platform_fee
@@ -156,6 +173,7 @@ end
 ```
 
 ### Promoter Dashboard Updates
+
 - Show fee breakdown on event creation
 - Display projected fees during ticket setup
 - Add revenue vs. fees analytics
@@ -164,9 +182,11 @@ end
 ## Communication Plan
 
 ### Email to Existing Promoters
+
 **Subject**: "Important Pricing Update - New Fair Fee Structure"
 
 **Key Points**:
+
 - Current model loses money on higher-priced tickets
 - New model ensures platform sustainability
 - Better features and support with improved revenue
@@ -174,6 +194,7 @@ end
 - Competitive with industry standards
 
 ### Website Updates
+
 - Update pricing page with clear fee calculator
 - Add FAQ about fee structure
 - Transparency about what fees cover (development, support, payment processing)
@@ -181,11 +202,13 @@ end
 ## Risk Mitigation
 
 ### Potential Issues
+
 1. **Promoter backlash**: Higher fees on expensive tickets
 2. **Competitor advantage**: Other platforms with lower fees
 3. **Reduced event creation**: Promoters may create fewer events
 
 ### Mitigation Strategies
+
 1. **Value communication**: Emphasize platform improvements and reliability
 2. **Competitive analysis**: Position as "fair and sustainable" vs. competitors
 3. **Volume incentives**: Quick path to reduced rates for active promoters
@@ -194,12 +217,14 @@ end
 ## Success Metrics
 
 ### Financial KPIs
+
 - Monthly recurring revenue growth
 - Average revenue per transaction
 - Profit margin improvement
 - Customer acquisition cost vs. lifetime value
 
 ### Product KPIs
+
 - Promoter retention rate
 - New event creation volume
 - Average ticket prices
@@ -221,6 +246,7 @@ The current €1 fixed fee model is financially unsustainable and actually costs
 ### Current Approach vs Industry Standard
 
 **Current Model (Not Recommended)**:
+
 ```
 Customer pays: €50 + €1 fee = €51
 Promoter receives: €50
@@ -228,6 +254,7 @@ Platform keeps: €1
 ```
 
 **Industry Standard (Recommended)**:
+
 ```
 Customer pays: €50 (clean price)
 Platform keeps: €1.75 (3.5% of €50)
@@ -237,18 +264,21 @@ Promoter receives: €48.25
 ### How Major Platforms Handle Fees
 
 **Eventbrite:**
+
 - Promoter sets: €50 ticket
 - Customer pays: €50
 - Eventbrite keeps: €1.85 (3.7%)
 - Promoter receives: €48.15
 
 **Ticketmaster:**
+
 - Promoter sets: €50 ticket
 - Customer pays: €50
 - Ticketmaster keeps: €5-7.50 (10-15%)
 - Promoter receives: €42.50-45
 
 **Universe (by Ticketmaster):**
+
 - Promoter sets: €50 ticket
 - Customer pays: €50
 - Universe keeps: €1.74 (2.5% + €0.49)
@@ -257,16 +287,19 @@ Promoter receives: €48.25
 ### Why Deducting from Payout is Better
 
 #### 1. Customer Experience
+
 - **Price transparency**: Customer sees exactly what they expect to pay
 - **No surprise fees**: Reduces cart abandonment
 - **Competitive pricing**: Easier to compare with other events
 
 #### 2. Promoter Benefits
+
 - **Marketing simplicity**: Can advertise clean prices
 - **Psychological pricing**: €50 sounds better than €51.75
 - **Competitive advantage**: Not adding extra fees to customer
 
 #### 3. Platform Benefits
+
 - **Higher conversion rates**: No fee-shock at checkout
 - **Better promoter adoption**: Easier to sell to event organizers
 - **Industry standard**: Follows established practices
@@ -274,14 +307,17 @@ Promoter receives: €48.25
 ### Psychological Impact
 
 **Adding Fees to Customer (Current)**:
+
 - Customer thinks: "€50 ticket... oh wait, €51.75 total" 😤
 - Cart abandonment risk
 
 **Deducting from Payout (Recommended)**:
+
 - Customer thinks: "€50 ticket, €50 total" 😊
 - Smooth purchase experience
 
 ### Promoter Dashboard Display
+
 ```
 Ticket Price: €50.00
 Platform Fee (3.5%): -€1.75
@@ -289,10 +325,12 @@ Your Earnings per Ticket: €48.25
 ```
 
 ### Communication to Promoters
+
 **Before:** "Platform charges €1 per order to customers"
 **After:** "Set your desired revenue per ticket, we handle the rest"
 
 **Example:**
+
 - Promoter wants €48.25 net per ticket
 - They should set ticket price at €50
 - Customer pays €50, promoter gets €48.25
@@ -310,45 +348,49 @@ Our main competitor charges a simple €1 flat fee per order. Here's how our mod
 **Competitor**: €1.00 flat fee
 
 | Ticket Price | Competitor Fee | Hybrid Fee | Difference | Competitive Position |
-|--------------|----------------|------------|------------|---------------------|
+| ------------ | -------------- | ---------- | ---------- | -------------------- |
-| €10          | €1.00          | €1.70      | +€0.70     | More expensive      |
+| €10          | €1.00          | €1.70      | +€0.70     | More expensive       |
-| €25          | €1.00          | €2.00      | +€1.00     | More expensive      |
+| €25          | €1.00          | €2.00      | +€1.00     | More expensive       |
-| €50          | €1.00          | €2.50      | +€1.50     | More expensive      |
+| €50          | €1.00          | €2.50      | +€1.50     | More expensive       |
 | **€75**      | **€1.00**      | **€3.00**  | **+€2.00** | **Break-even point** |
-| €100         | €1.00          | €3.50      | +€2.50     | Much more expensive |
+| €100         | €1.00          | €3.50      | +€2.50     | Much more expensive  |
 
 ### Alternative Competitive Models
 
 #### Option 1: Low-End Competitive Model
+
 ```
-Platform Fee = €0.50 + 1.5% of ticket price
+  Platform Fee = €0.50 + 1.5% of ticket price
 ```
 
-| Ticket Price | Competitor Fee | Our Fee | Difference | Position |
+| Ticket Price | Competitor Fee | Our Fee | Difference | Position           |
-|--------------|----------------|---------|------------|----------|
+| ------------ | -------------- | ------- | ---------- | ------------------ |
-| €10          | €1.00          | €0.65   | **-€0.35** | ✅ **Cheaper** |
+| €10          | €1.00          | €0.65   | **-€0.35** | ✅ **Cheaper**     |
-| €25          | €1.00          | €0.88   | **-€0.12** | ✅ **Cheaper** |
+| €25          | €1.00          | €0.88   | **-€0.12** | ✅ **Cheaper**     |
 | €50          | €1.00          | €1.25   | +€0.25     | ⚠️ Slightly higher |
-| €100         | €1.00          | €2.00   | +€1.00     | More expensive |
+| €100         | €1.00          | €2.00   | +€1.00     | More expensive     |
 
 #### Option 2: Modified Hybrid Model
+
 ```
 Platform Fee = €0.75 + 2.5% of ticket price
 ```
 
-| Ticket Price | Competitor Fee | Our Fee | Difference | Position |
+| Ticket Price | Competitor Fee | Our Fee | Difference | Position            |
-|--------------|----------------|---------|------------|----------|
+| ------------ | -------------- | ------- | ---------- | ------------------- |
-| €10          | €1.00          | €1.00   | **Equal**  | ✅ Competitive |
+| €10          | €1.00          | €1.00   | **Equal**  | ✅ Competitive      |
-| €25          | €1.00          | €1.38   | +€0.38     | ⚠️ Slightly higher |
+| €25          | €1.00          | €1.38   | +€0.38     | ⚠️ Slightly higher  |
-| €40          | €1.00          | €1.75   | +€0.75     | **Break-even** |
+| €40          | €1.00          | €1.75   | +€0.75     | **Break-even**      |
 | €75          | €1.00          | €2.63   | +€1.63     | Much more expensive |
 
 ### Competitive Strategy Recommendations
 
 #### 1. Value Differentiation Approach
+
 Since we'll be more expensive on higher-priced tickets, focus on premium positioning:
 
 **Value Proposition:**
+
 - "We're not the cheapest, we're the most complete"
 - Advanced analytics dashboard
 - Real-time sales tracking
@@ -359,12 +401,14 @@ Since we'll be more expensive on higher-priced tickets, focus on premium positio
 #### 2. Market Segmentation Strategy
 
 **Target Market Positioning:**
+
 - **Competitor**: Best for small, simple events (€10-30 tickets)
 - **Us**: Best for professional events (€40+ tickets) with serious promoters
 
 #### 3. Hybrid Competitive Approach
 
 **Tiered Offering:**
+
 - **Basic Plan**: Match competitor at €1 flat fee (limited features)
 - **Professional Plan**: Hybrid model with premium features
 - **Enterprise Plan**: Custom pricing with full feature set
@@ -372,6 +416,7 @@ Since we'll be more expensive on higher-priced tickets, focus on premium positio
 #### 4. Volume-Based Competitive Response
 
 **Free Tier Strategy:**
+
 - First 3 events per month at competitor's €1 rate
 - Volume discounts for high-activity promoters
 - Loyalty rewards for long-term customers
@@ -381,15 +426,18 @@ Since we'll be more expensive on higher-priced tickets, focus on premium positio
 #### "Choose Your Business Model" Campaign
 
 **For Simple Events (Under €40):**
+
 - "Need basic ticketing? Our competitor works fine"
 - "Pay €1 flat fee for simple events"
 
 **For Professional Events (€40+):**
+
 - "Serious about your business? You need serious tools"
 - "Fair percentage-based pricing"
 - "Advanced analytics, marketing tools, priority support"
 
 #### Brand Positioning Statement
+
 **"We're the Shopify of Events - Built for Growth"**
 
 This positions us as the premium option for serious promoters while acknowledging the competitor's advantage on small events.
@@ -399,12 +447,14 @@ This positions us as the premium option for serious promoters while acknowledgin
 Given the competitive landscape, we recommend **Option 1** (€0.50 + 1.5%):
 
 **Advantages:**
+
 - Competitive on low-priced tickets
 - Still profitable at all price points
 - Better positioning against main competitor
 - Appeals to both small and large event organizers
 
 **Financial Impact:**
+
 - Lower fees on tickets under €33
 - Competitive fees on tickets €33-66
 - Premium pricing on high-value tickets justified by features

test/models/order_test.rb

@@ -469,7 +469,7 @@ class OrderTest < ActiveSupport::TestCase
     assert_equal "active", ticket2.status
   end
 
-  test "calculate_total! should sum ticket prices plus 1€ service fee" do
+  test "calculate_total! should sum ticket prices only (platform fee deducted from promoter payout)" do
     order = Order.create!(
       user: @user, event: @event, total_amount_cents: 0,
       status: "draft", payment_attempts: 0
@@ -506,7 +506,80 @@ class OrderTest < ActiveSupport::TestCase
     order.calculate_total!
     order.reload
 
-    assert_equal 3100, order.total_amount_cents # 2 tickets * 1500 cents + 100 cents (1€ fee)
+    assert_equal 3000, order.total_amount_cents # 2 tickets * 1500 cents (no service fee added to customer)
+  end
+
+  test "platform_fee_cents should calculate €0.50 + 1.5% per ticket" do
+    order = Order.create!(
+      user: @user, event: @event, total_amount_cents: 0,
+      status: "draft", payment_attempts: 0
+    )
+
+    ticket_type1 = TicketType.create!(
+      name: "Cheap Ticket",
+      description: "Cheap ticket type",
+      price_cents: 1000, # €10
+      quantity: 10,
+      sale_start_at: Time.current,
+      sale_end_at: Time.current + 1.day,
+      requires_id: false,
+      event: @event
+    )
+
+    ticket_type2 = TicketType.create!(
+      name: "Expensive Ticket",
+      description: "Expensive ticket type",
+      price_cents: 5000, # €50
+      quantity: 10,
+      sale_start_at: Time.current,
+      sale_end_at: Time.current + 1.day,
+      requires_id: false,
+      event: @event
+    )
+
+    ticket1 = Ticket.create!(order: order, ticket_type: ticket_type1, status: "draft", first_name: "John", last_name: "Doe")
+    ticket2 = Ticket.create!(order: order, ticket_type: ticket_type2, status: "draft", first_name: "Jane", last_name: "Doe")
+
+    expected_fee = (50 + (1000 * 0.015).to_i) + (50 + (5000 * 0.015).to_i) # 50+15 + 50+75 = 190
+    assert_equal 190, order.platform_fee_cents
+  end
+
+  test "promoter_payout_cents should be total minus platform fee" do
+    order = Order.create!(
+      user: @user, event: @event, total_amount_cents: 3000,
+      status: "paid", payment_attempts: 0
+    )
+
+    ticket_type = TicketType.create!(
+      name: "Test Ticket",
+      description: "Test ticket",
+      price_cents: 1500,
+      quantity: 10,
+      sale_start_at: Time.current,
+      sale_end_at: Time.current + 1.day,
+      requires_id: false,
+      event: @event
+    )
+
+    Ticket.create!(order: order, ticket_type: ticket_type, status: "active", first_name: "John", last_name: "Doe")
+    Ticket.create!(order: order, ticket_type: ticket_type, status: "active", first_name: "Jane", last_name: "Doe")
+
+    order.calculate_total! # Should still be 3000
+    expected_payout = 3000 - (50 + (1500 * 0.015).to_i) * 2 # 3000 - (50+22.5≈22)*2 = 3000 - 144 = 2856
+    assert_equal 2856, order.promoter_payout_cents
+  end
+
+  test "platform_fee_euros should convert cents to euros" do
+    order = Order.new(total_amount_cents: 0)
+    # Assuming one €10 ticket: 50 + 150 = 200 cents = €2.00
+    def order.platform_fee_cents; 200; end
+    assert_equal 2.0, order.platform_fee_euros
+  end
+
+  test "promoter_payout_euros should convert cents to euros" do
+    order = Order.new(total_amount_cents: 10000)
+    def order.platform_fee_cents; 500; end
+    assert_equal 95.0, order.promoter_payout_euros
   end
 
   # === Stripe Integration Tests (Mock) ===

test/services/stripe_invoice_service_test.rb

@@ -151,7 +151,7 @@ class StripeInvoiceServiceTest < ActiveSupport::TestCase
     mock_invoice.stubs(:finalize_invoice).returns(mock_invoice)
     mock_invoice.expects(:pay)
     Stripe::Invoice.expects(:create).returns(mock_invoice)
-    Stripe::InvoiceItem.expects(:create).twice # Once for tickets, once for service fee
+    Stripe::InvoiceItem.expects(:create).once # Only for tickets, no service fee
 
     result = @service.create_post_payment_invoice
     assert_not_nil result
@@ -173,7 +173,7 @@ class StripeInvoiceServiceTest < ActiveSupport::TestCase
     mock_invoice.stubs(:finalize_invoice).returns(mock_invoice)
     mock_invoice.expects(:pay)
     Stripe::Invoice.expects(:create).returns(mock_invoice)
-    Stripe::InvoiceItem.expects(:create).twice # Once for tickets, once for service fee
+    Stripe::InvoiceItem.expects(:create).once # Only for tickets, no service fee
 
     result = @service.create_post_payment_invoice
     assert_not_nil result
@@ -261,7 +261,7 @@ class StripeInvoiceServiceTest < ActiveSupport::TestCase
     mock_invoice.expects(:pay)
 
     Stripe::Invoice.expects(:create).with(expected_invoice_data).returns(mock_invoice)
-    Stripe::InvoiceItem.expects(:create).twice # Once for tickets, once for service fee
+    Stripe::InvoiceItem.expects(:create).once # Only for tickets, no service fee
 
     result = @service.create_post_payment_invoice
     assert_not_nil result
@@ -300,7 +300,7 @@ class StripeInvoiceServiceTest < ActiveSupport::TestCase
     })
 
     Stripe::Invoice.expects(:create).returns(mock_invoice)
-    Stripe::InvoiceItem.expects(:create).twice # Once for tickets, once for service fee
+    Stripe::InvoiceItem.expects(:create).once # Only for tickets, no service fee
     mock_invoice.expects(:finalize_invoice).returns(mock_finalized_invoice)
 
     result = @service.create_post_payment_invoice