Track who paid each depense, with a "Commun" (shared) fallback

Adds a "payé par" field to transactions and recurring transactions:
either a household member or null (shared/common expense). No per-
member account balances — this is purely a "who paid" label, the
household's overall balance is unchanged and unaffected by any
filtering.

- paid_by_user_id nullable FK on transactions and recurring_transactions
- Suivi: "payé par" selector on both entry forms (desktop dropdown,
  mobile buttons), a filter above the transaction table, a "payé par"
  column, and a summary tile showing this month's depenses grouped
  by payer (including Commun)
- Recurring transactions carry paid_by_user_id onto the transaction
  they generate when confirmed
- Running balance is computed from all transactions regardless of
  the payer filter, so it never gets skewed by the active filter

11 new Pest tests (assignment, common fallback, non-member rejection,
filter isolation from the balance calc, per-payer summary, recurring
propagation). 69/69 total pass, Pint clean, verified end-to-end on
production data (desktop + mobile, test row created and removed).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/Livewire/Recurring/Index.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace App\Livewire\Recurring;
 
+use App\Models\Household;
 use App\Models\RecurringTransaction;
 use Livewire\Attributes\Layout;
 use Livewire\Component;
@@ -19,6 +20,8 @@ class Index extends Component
 
     public string $dayOfMonth = '1';
 
+    public string $paidByUserId = '';
+
     public ?int $editingId = null;
 
     public string $editingName = '';
@@ -27,6 +30,23 @@ class Index extends Component
 
     public string $editingDayOfMonth = '1';
 
+    public string $editingPaidByUserId = '';
+
+    /**
+     * Vide ou "0" = dépense commune (aucun membre précis). Vérifie que la
+     * valeur, si fournie, correspond bien à un membre du foyer courant.
+     */
+    private function resolvePaidByUserId(Household $household, string $value): ?int
+    {
+        if ($value === '' || $value === '0') {
+            return null;
+        }
+
+        $isMember = $household->members()->whereKey((int) $value)->exists();
+
+        return $isMember ? (int) $value : null;
+    }
+
     public function add(): void
     {
         $this->validate([
@@ -34,6 +54,7 @@ class Index extends Component
             'categoryId' => ['required', 'exists:categories,id'],
             'amount' => ['required', 'numeric', 'min:0.01'],
             'dayOfMonth' => ['required', 'integer', 'min:1', 'max:28'],
+            'paidByUserId' => ['nullable', 'integer'],
         ]);
 
         $household = auth()->user()->currentHousehold;
@@ -41,12 +62,13 @@ class Index extends Component
 
         $household->recurringTransactions()->create([
             'category_id' => $category->id,
+            'paid_by_user_id' => $this->resolvePaidByUserId($household, $this->paidByUserId),
             'name' => $this->name,
             'amount' => $this->amount,
             'day_of_month' => $this->dayOfMonth,
         ]);
 
-        $this->reset(['name', 'categoryId', 'amount', 'dayOfMonth']);
+        $this->reset(['name', 'categoryId', 'amount', 'dayOfMonth', 'paidByUserId']);
         $this->dayOfMonth = '1';
     }
 
@@ -59,6 +81,7 @@ class Index extends Component
         $this->editingName = $recurring->name;
         $this->editingAmount = (string) $recurring->amount;
         $this->editingDayOfMonth = (string) $recurring->day_of_month;
+        $this->editingPaidByUserId = $recurring->paid_by_user_id ? (string) $recurring->paid_by_user_id : '';
     }
 
     public function saveEdit(): void
@@ -70,12 +93,16 @@ class Index extends Component
             'editingName' => ['required', 'string', 'max:255'],
             'editingAmount' => ['required', 'numeric', 'min:0.01'],
             'editingDayOfMonth' => ['required', 'integer', 'min:1', 'max:28'],
+            'editingPaidByUserId' => ['nullable', 'integer'],
         ]);
 
+        $household = auth()->user()->currentHousehold;
+
         $recurring->update([
             'name' => $this->editingName,
             'amount' => $this->editingAmount,
             'day_of_month' => $this->editingDayOfMonth,
+            'paid_by_user_id' => $this->resolvePaidByUserId($household, $this->editingPaidByUserId),
         ]);
 
         $this->editingId = null;
@@ -107,7 +134,7 @@ class Index extends Component
         $household = auth()->user()->currentHousehold;
 
         $recurrences = $household->recurringTransactions()
-            ->with('category')
+            ->with(['category', 'paidBy'])
             ->orderBy('day_of_month')
             ->get();
 
@@ -117,9 +144,12 @@ class Index extends Component
             ->orderBy('position')
             ->get();
 
+        $members = $household->members()->orderBy('name')->get();
+
         return view('livewire.recurring.index', [
             'recurrences' => $recurrences,
             'categories' => $categories,
+            'members' => $members,
         ]);
     }
 }

app/Livewire/Suivi/Index.php

@@ -7,6 +7,7 @@ namespace App\Livewire\Suivi;
 use App\Enums\CategoryType;
 use App\Models\BudgetLine;
 use App\Models\Category;
+use App\Models\Household;
 use App\Models\RecurringTransaction;
 use App\Models\Transaction;
 use Livewire\Attributes\Layout;
@@ -25,6 +26,10 @@ class Index extends Component
 
     public string $details = '';
 
+    public string $paidByUserId = '';
+
+    public string $filterPaidBy = '';
+
     public function mount(): void
     {
         $this->date = now()->toDateString();
@@ -39,27 +44,45 @@ class Index extends Component
             'categoryId' => ['required', 'exists:categories,id'],
             'amount' => ['required', 'numeric'],
             'details' => ['nullable', 'string', 'max:255'],
+            'paidByUserId' => ['nullable', 'integer'],
         ]);
 
         $household = auth()->user()->currentHousehold;
         $category = $household->categories()->findOrFail($this->categoryId);
+        $paidByUserId = $this->resolvePaidByUserId($household, $this->paidByUserId);
 
         $household->transactions()->create([
             'category_id' => $category->id,
             'user_id' => auth()->id(),
+            'paid_by_user_id' => $paidByUserId,
             'date' => $this->date,
             'date_effective' => $this->dateEffective,
             'amount' => $this->amount,
             'details' => $this->details,
         ]);
 
-        $this->reset(['categoryId', 'amount', 'details']);
+        $this->reset(['categoryId', 'amount', 'details', 'paidByUserId']);
         $this->date = now()->toDateString();
         $this->dateEffective = now()->toDateString();
 
         $this->dispatch('transaction-added');
     }
 
+    /**
+     * Vide ou "0" = dépense commune (aucun membre précis). Vérifie que la
+     * valeur, si fournie, correspond bien à un membre du foyer courant.
+     */
+    private function resolvePaidByUserId(Household $household, string $value): ?int
+    {
+        if ($value === '' || $value === '0') {
+            return null;
+        }
+
+        $isMember = $household->members()->whereKey((int) $value)->exists();
+
+        return $isMember ? (int) $value : null;
+    }
+
     public function deleteTransaction(int $transactionId): void
     {
         $household = auth()->user()->currentHousehold;
@@ -82,6 +105,7 @@ class Index extends Component
             'category_id' => $recurring->category_id,
             'recurring_transaction_id' => $recurring->id,
             'user_id' => auth()->id(),
+            'paid_by_user_id' => $recurring->paid_by_user_id,
             'date' => $today->toDateString(),
             'date_effective' => $today->toDateString(),
             'amount' => $amount,
@@ -139,13 +163,10 @@ class Index extends Component
     {
         $household = auth()->user()->currentHousehold;
 
-        $transactions = $household->transactions()
+        // Le solde cumulé porte sur l'ensemble des transactions, indépendamment
-            ->with('category')
+        // du filtre "payé par" appliqué à la liste affichée.
-            ->orderByDesc('date')
+        $allTransactions = $household->transactions()->with('category')->get();
-            ->orderByDesc('id')
+        $chronological = $allTransactions->sortBy(['date', 'id'])->values();
-            ->get();
-
-        $chronological = $transactions->sortBy(['date', 'id'])->values();
 
         $running = [];
         $balance = 0.0;
@@ -155,6 +176,20 @@ class Index extends Component
             $running[$t->id] = $balance;
         }
 
+        $transactionsQuery = $household->transactions()
+            ->with(['category', 'paidBy']);
+
+        if ($this->filterPaidBy === 'common') {
+            $transactionsQuery->whereNull('paid_by_user_id');
+        } elseif ($this->filterPaidBy !== '') {
+            $transactionsQuery->where('paid_by_user_id', (int) $this->filterPaidBy);
+        }
+
+        $transactions = $transactionsQuery
+            ->orderByDesc('date')
+            ->orderByDesc('id')
+            ->get();
+
         $year = (int) now()->year;
         $month = (int) now()->month;
 
@@ -205,14 +240,32 @@ class Index extends Component
                 ]];
             });
 
+        $members = $household->members()->orderBy('name')->get();
+
+        $paidBySummary = $household->transactions()
+            ->with(['category', 'paidBy'])
+            ->whereHas('category', fn ($q) => $q->where('type', CategoryType::Depense))
+            ->whereYear('date_effective', $year)
+            ->whereMonth('date_effective', $month)
+            ->get()
+            ->groupBy(fn (Transaction $t) => $t->paid_by_user_id ?? 'common')
+            ->map(fn ($group, $key) => [
+                'label' => $key === 'common' ? 'Commun' : $group->first()->paidBy->name,
+                'total' => (float) $group->sum('amount'),
+            ])
+            ->sortByDesc('total')
+            ->values();
+
         return view('livewire.suivi.index', [
             'transactions' => $transactions,
             'running' => $running,
             'categories' => $categories,
             'categoryProgress' => $categoryProgress,
-            'nbrThisYear' => $transactions->filter(fn (Transaction $t) => $t->date->year === $year)->count(),
+            'members' => $members,
-            'nbrTotal' => $transactions->count(),
+            'paidBySummary' => $paidBySummary,
-            'lastEntry' => $transactions->first(),
+            'nbrThisYear' => $allTransactions->filter(fn (Transaction $t) => $t->date->year === $year)->count(),
+            'nbrTotal' => $allTransactions->count(),
+            'lastEntry' => $allTransactions->sortByDesc('date')->first(),
             'unaffected' => $unaffected,
             'pendingRecurrences' => $pendingRecurrences,
         ]);

app/Models/RecurringTransaction.php

@@ -11,7 +11,7 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
 class RecurringTransaction extends Model
 {
     protected $fillable = [
-        'household_id', 'category_id', 'name', 'amount', 'day_of_month',
+        'household_id', 'category_id', 'paid_by_user_id', 'name', 'amount', 'day_of_month',
         'active', 'last_generated_year', 'last_generated_month',
     ];
 
@@ -33,6 +33,11 @@ class RecurringTransaction extends Model
         return $this->belongsTo(Category::class);
     }
 
+    public function paidBy(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'paid_by_user_id');
+    }
+
     public function transactions(): HasMany
     {
         return $this->hasMany(Transaction::class);

app/Models/Transaction.php

@@ -9,7 +9,7 @@ use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 class Transaction extends Model
 {
-    protected $fillable = ['household_id', 'category_id', 'recurring_transaction_id', 'user_id', 'date', 'date_effective', 'amount', 'details'];
+    protected $fillable = ['household_id', 'category_id', 'recurring_transaction_id', 'user_id', 'paid_by_user_id', 'date', 'date_effective', 'amount', 'details'];
 
     protected function casts(): array
     {
@@ -34,4 +34,9 @@ class Transaction extends Model
     {
         return $this->belongsTo(User::class);
     }
+
+    public function paidBy(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'paid_by_user_id');
+    }
 }

database/migrations/2026_08_01_061025_add_paid_by_user_id_to_transactions_table.php

@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('transactions', function (Blueprint $table) {
+            // Null = dépense commune, non attribuée à un membre en particulier.
+            $table->foreignId('paid_by_user_id')->nullable()->after('user_id')->constrained('users')->nullOnDelete();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('transactions', function (Blueprint $table) {
+            $table->dropConstrainedForeignId('paid_by_user_id');
+        });
+    }
+};

database/migrations/2026_08_01_061052_add_paid_by_user_id_to_recurring_transactions_table.php

@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('recurring_transactions', function (Blueprint $table) {
+            $table->foreignId('paid_by_user_id')->nullable()->after('category_id')->constrained('users')->nullOnDelete();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('recurring_transactions', function (Blueprint $table) {
+            $table->dropConstrainedForeignId('paid_by_user_id');
+        });
+    }
+};

resources/views/livewire/recurring/index.blade.php

@@ -11,7 +11,7 @@
             @forelse ($recurrences as $recurring)
                 <li class="px-4 py-3">
                     @if ($editingId === $recurring->id)
-                        <form wire:submit="saveEdit" class="grid grid-cols-1 sm:grid-cols-4 gap-2 items-end">
+                        <form wire:submit="saveEdit" class="grid grid-cols-1 sm:grid-cols-5 gap-2 items-end">
                             <div>
                                 <label for="editing-name-{{ $recurring->id }}" class="sr-only">Nom</label>
                                 <input wire:model="editingName" id="editing-name-{{ $recurring->id }}" type="text" class="w-full bg-surface border-border-strong text-text rounded-md text-sm py-1" autofocus />
@@ -24,6 +24,15 @@
                                 <label for="editing-day-{{ $recurring->id }}" class="sr-only">Jour du mois</label>
                                 <input wire:model="editingDayOfMonth" id="editing-day-{{ $recurring->id }}" type="number" min="1" max="28" class="w-full bg-surface border-border-strong text-text rounded-md text-sm py-1" />
                             </div>
+                            <div>
+                                <label for="editing-paid-by-{{ $recurring->id }}" class="sr-only">Payé par</label>
+                                <select wire:model="editingPaidByUserId" id="editing-paid-by-{{ $recurring->id }}" class="w-full rounded-md bg-surface border-border-strong text-text text-sm py-1 focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring">
+                                    <option value="">Commun</option>
+                                    @foreach ($members as $member)
+                                        <option value="{{ $member->id }}">{{ $member->name }}</option>
+                                    @endforeach
+                                </select>
+                            </div>
                             <div class="flex items-center gap-3">
                                 <button type="submit" class="text-xs text-positive hover:underline rounded focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring">Sauver</button>
                                 <button type="button" wire:click="cancelEdit" class="text-xs text-text-muted hover:underline rounded focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring">Annuler</button>
@@ -37,7 +46,7 @@
                                     <span class="text-text-muted">— {{ $recurring->category->name }}</span>
                                 </p>
                                 <p class="text-xs text-text-muted">
-                                    {{ number_format($recurring->amount, 2, ',', ' ') }} € · le {{ $recurring->day_of_month }} de chaque mois
+                                    {{ number_format($recurring->amount, 2, ',', ' ') }} € · le {{ $recurring->day_of_month }} de chaque mois · {{ $recurring->paidBy?->name ?? 'Commun' }}
                                     @unless ($recurring->active) · <span class="text-danger">en pause</span> @endunless
                                 </p>
                             </div>
@@ -56,7 +65,7 @@
             @endforelse
         </ul>
 
-        <form wire:submit="add" class="px-4 py-4 bg-surface-alt grid grid-cols-1 sm:grid-cols-5 gap-3 items-end">
+        <form wire:submit="add" class="px-4 py-4 bg-surface-alt grid grid-cols-1 sm:grid-cols-6 gap-3 items-end">
             <div>
                 <x-input-label for="name" value="Nom" />
                 <x-text-input wire:model="name" id="name" type="text" class="block mt-1 w-full text-sm" placeholder="Loyer" />
@@ -82,6 +91,15 @@
                 <x-text-input wire:model="dayOfMonth" id="dayOfMonth" type="number" min="1" max="28" class="block mt-1 w-full text-sm" />
                 <x-input-error :messages="$errors->get('dayOfMonth')" class="mt-1" />
             </div>
+            <div>
+                <x-input-label for="paidByUserId" value="Payé par" />
+                <select wire:model="paidByUserId" id="paidByUserId" class="block mt-1 w-full rounded-md bg-surface border-border-strong text-text text-sm focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring">
+                    <option value="">Commun</option>
+                    @foreach ($members as $member)
+                        <option value="{{ $member->id }}">{{ $member->name }}</option>
+                    @endforeach
+                </select>
+            </div>
             <div>
                 <x-primary-button class="w-full justify-center">Ajouter</x-primary-button>
             </div>

resources/views/livewire/suivi/index.blade.php

@@ -123,6 +123,34 @@
                 />
             </div>
 
+            @if ($members->isNotEmpty())
+                <fieldset>
+                    <legend class="text-sm font-medium text-text-muted mb-2">Payé par</legend>
+                    <div class="grid grid-cols-2 gap-2">
+                        <button
+                            type="button"
+                            wire:click="$set('paidByUserId', '')"
+                            aria-pressed="{{ $paidByUserId === '' ? 'true' : 'false' }}"
+                            class="min-h-[44px] px-3 py-2 rounded-lg border text-sm font-medium transition focus:outline-none focus-visible:ring-2 ring-brand
+                                {{ $paidByUserId === '' ? 'bg-brand text-white border-brand' : 'bg-surface border-border-strong text-text' }}"
+                        >
+                            Commun
+                        </button>
+                        @foreach ($members as $member)
+                            <button
+                                type="button"
+                                wire:click="$set('paidByUserId', '{{ $member->id }}')"
+                                aria-pressed="{{ (string) $paidByUserId === (string) $member->id ? 'true' : 'false' }}"
+                                class="min-h-[44px] px-3 py-2 rounded-lg border text-sm font-medium transition focus:outline-none focus-visible:ring-2 ring-brand
+                                    {{ (string) $paidByUserId === (string) $member->id ? 'bg-brand text-white border-brand' : 'bg-surface border-border-strong text-text' }}"
+                            >
+                                {{ $member->name }}
+                            </button>
+                        @endforeach
+                    </div>
+                </fieldset>
+            @endif
+
             <button
                 type="submit"
                 class="w-full py-4 rounded-lg bg-brand text-white text-lg font-semibold focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring focus-visible:ring-offset-2 focus-visible:ring-offset-surface"
@@ -168,6 +196,20 @@
             </div>
         </div>
 
+        @if ($paidBySummary->isNotEmpty())
+            <div class="bg-surface shadow rounded-lg p-4">
+                <p class="text-xs text-text-muted mb-2">Dépenses ce mois-ci, par personne</p>
+                <div class="flex flex-wrap gap-4">
+                    @foreach ($paidBySummary as $entry)
+                        <div>
+                            <p class="text-xs text-text-muted">{{ $entry['label'] }}</p>
+                            <p class="text-sm font-semibold text-negative">{{ number_format($entry['total'], 2, ',', ' ') }} €</p>
+                        </div>
+                    @endforeach
+                </div>
+            </div>
+        @endif
+
         @if ($pendingRecurrences->isNotEmpty())
             <div class="bg-surface shadow rounded-lg overflow-hidden">
                 <div class="px-4 py-2 bg-brand">
@@ -241,6 +283,15 @@
                     <x-input-label for="dateEffective" value="Date effective" />
                     <x-text-input wire:model="dateEffective" id="dateEffective" type="date" class="block mt-1 w-full text-sm" />
                 </div>
+                <div>
+                    <x-input-label for="paidByUserId" value="Payé par" />
+                    <select wire:model="paidByUserId" id="paidByUserId" class="block mt-1 w-full rounded-md bg-surface border-border-strong text-text text-sm focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring">
+                        <option value="">Commun</option>
+                        @foreach ($members as $member)
+                            <option value="{{ $member->id }}">{{ $member->name }}</option>
+                        @endforeach
+                    </select>
+                </div>
                 <div class="sm:col-span-6">
                     <x-primary-button>Ajouter</x-primary-button>
                 </div>
@@ -256,6 +307,17 @@
             $amountPrefix = fn ($t) => $t->category->type->value === 'depense' ? '−' : '+';
         @endphp
 
+        <div class="flex items-center gap-2">
+            <label for="filterPaidBy" class="text-xs text-text-muted">Payé par</label>
+            <select wire:model.live="filterPaidBy" id="filterPaidBy" class="rounded-md bg-surface border-border-strong text-text text-sm focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring">
+                <option value="">Tout le monde</option>
+                <option value="common">Commun</option>
+                @foreach ($members as $member)
+                    <option value="{{ $member->id }}">{{ $member->name }}</option>
+                @endforeach
+            </select>
+        </div>
+
         <div class="bg-surface shadow rounded-lg overflow-hidden">
             <div class="overflow-x-auto">
                 <table class="min-w-full text-sm">
@@ -267,6 +329,7 @@
                             <th scope="col" class="text-left px-4 py-2">Catégorie</th>
                             <th scope="col" class="text-right px-4 py-2">Montant</th>
                             <th scope="col" class="text-left px-4 py-2">Détails</th>
+                            <th scope="col" class="text-left px-4 py-2">Payé par</th>
                             <th scope="col" class="text-right px-4 py-2">Balance</th>
                             <th scope="col" class="text-left px-4 py-2">Date effective</th>
                             <th scope="col" class="px-4 py-2"><span class="sr-only">Actions</span></th>
@@ -282,6 +345,7 @@
                                     {{ $amountPrefix($transaction) }}{{ number_format($transaction->amount, 2, ',', ' ') }} €
                                 </td>
                                 <td class="px-4 py-2 text-text-muted">{{ $transaction->details }}</td>
+                                <td class="px-4 py-2 text-text-muted">{{ $transaction->paidBy?->name ?? 'Commun' }}</td>
                                 <td class="px-4 py-2 text-right font-semibold {{ ($running[$transaction->id] ?? 0) < 0 ? 'text-negative' : 'text-text' }}">
                                     {{ number_format($running[$transaction->id] ?? 0, 2, ',', ' ') }} €
                                 </td>
@@ -293,7 +357,7 @@
                                 </td>
                             </tr>
                         @empty
-                            <tr><td colspan="8" class="px-4 py-3 text-sm text-text-muted">Aucun enregistrement.</td></tr>
+                            <tr><td colspan="9" class="px-4 py-3 text-sm text-text-muted">Aucun enregistrement.</td></tr>
                         @endforelse
                     </tbody>
                 </table>

tests/Feature/RecurringTransactionTest.php

@@ -65,3 +65,48 @@ it('deletes a recurring transaction', function (): void {
 
     expect(RecurringTransaction::find($recurring->id))->toBeNull();
 });
+
+it('assigns a recurring transaction to a household member', function (): void {
+    $owner = User::factory()->create();
+    $member = User::factory()->create();
+    $household = $owner->currentHousehold;
+    $member->households()->attach($household->id, ['role' => 'member']);
+
+    $category = $household->categories()->create(['name' => 'Loyer', 'type' => 'depense', 'position' => 1]);
+
+    Livewire::actingAs($owner)
+        ->test(Index::class)
+        ->set('name', 'Loyer')
+        ->set('categoryId', $category->id)
+        ->set('amount', '1200')
+        ->set('dayOfMonth', '5')
+        ->set('paidByUserId', (string) $member->id)
+        ->call('add');
+
+    $recurring = $household->recurringTransactions()->first();
+
+    expect($recurring->paid_by_user_id)->toBe($member->id);
+});
+
+it('carries the recurring paid-by user onto the generated transaction', function (): void {
+    $this->travelTo(now()->setDate(2026, 3, 10));
+
+    $owner = User::factory()->create();
+    $member = User::factory()->create();
+    $household = $owner->currentHousehold;
+    $member->households()->attach($household->id, ['role' => 'member']);
+
+    $category = $household->categories()->create(['name' => 'Loyer', 'type' => 'depense', 'position' => 1]);
+    $recurring = $household->recurringTransactions()->create([
+        'category_id' => $category->id, 'paid_by_user_id' => $member->id,
+        'name' => 'Loyer', 'amount' => 1200, 'day_of_month' => 5,
+    ]);
+
+    Livewire::actingAs($owner)
+        ->test(App\Livewire\Suivi\Index::class)
+        ->call('confirmRecurrence', $recurring->id, '1200');
+
+    $transaction = $household->transactions()->where('recurring_transaction_id', $recurring->id)->first();
+
+    expect($transaction->paid_by_user_id)->toBe($member->id);
+});

tests/Feature/SuiviTest.php

@@ -236,6 +236,124 @@ it('returns no progress for a category without a budget defined', function (): v
     expect($component->viewData('categoryProgress')[$category->id])->toBeNull();
 });
 
+it('records who paid a transaction and defaults to common when none is selected', function (): void {
+    $user = User::factory()->create();
+    $household = $user->currentHousehold;
+    $category = $household->categories()->create(['name' => 'Loyer', 'type' => 'depense', 'position' => 1]);
+
+    Livewire::actingAs($user)
+        ->test(Index::class)
+        ->set('categoryId', $category->id)
+        ->set('amount', '1200')
+        ->call('addTransaction');
+
+    $transaction = $household->transactions()->first();
+
+    expect($transaction->paid_by_user_id)->toBeNull();
+});
+
+it('assigns a transaction to a household member when selected', function (): void {
+    $owner = User::factory()->create();
+    $member = User::factory()->create();
+    $household = $owner->currentHousehold;
+    $member->households()->attach($household->id, ['role' => 'member']);
+
+    $category = $household->categories()->create(['name' => 'Loyer', 'type' => 'depense', 'position' => 1]);
+
+    Livewire::actingAs($owner)
+        ->test(Index::class)
+        ->set('categoryId', $category->id)
+        ->set('amount', '1200')
+        ->set('paidByUserId', (string) $member->id)
+        ->call('addTransaction');
+
+    $transaction = $household->transactions()->first();
+
+    expect($transaction->paid_by_user_id)->toBe($member->id);
+});
+
+it('ignores a paid-by user id that does not belong to the household', function (): void {
+    $owner = User::factory()->create();
+    $outsider = User::factory()->create();
+    $household = $owner->currentHousehold;
+    $category = $household->categories()->create(['name' => 'Loyer', 'type' => 'depense', 'position' => 1]);
+
+    Livewire::actingAs($owner)
+        ->test(Index::class)
+        ->set('categoryId', $category->id)
+        ->set('amount', '1200')
+        ->set('paidByUserId', (string) $outsider->id)
+        ->call('addTransaction');
+
+    $transaction = $household->transactions()->first();
+
+    expect($transaction->paid_by_user_id)->toBeNull();
+});
+
+it('filters transactions by who paid without affecting the running balance', function (): void {
+    $owner = User::factory()->create();
+    $member = User::factory()->create();
+    $household = $owner->currentHousehold;
+    $member->households()->attach($household->id, ['role' => 'member']);
+
+    $revenu = $household->categories()->create(['name' => 'Salaire', 'type' => 'revenu', 'position' => 1]);
+    $depense = $household->categories()->create(['name' => 'Loyer', 'type' => 'depense', 'position' => 1]);
+
+    $household->transactions()->create([
+        'category_id' => $revenu->id, 'user_id' => $owner->id,
+        'date' => '2026-01-01', 'date_effective' => '2026-01-01', 'amount' => 2000,
+    ]);
+    $ownerTx = $household->transactions()->create([
+        'category_id' => $depense->id, 'user_id' => $owner->id, 'paid_by_user_id' => $owner->id,
+        'date' => '2026-01-02', 'date_effective' => '2026-01-02', 'amount' => 500,
+    ]);
+    $memberTx = $household->transactions()->create([
+        'category_id' => $depense->id, 'user_id' => $owner->id, 'paid_by_user_id' => $member->id,
+        'date' => '2026-01-03', 'date_effective' => '2026-01-03', 'amount' => 300,
+    ]);
+
+    $component = Livewire::actingAs($owner)->test(Index::class)->set('filterPaidBy', (string) $member->id);
+
+    $shown = $component->viewData('transactions');
+    expect($shown->pluck('id'))->toContain($memberTx->id);
+    expect($shown->pluck('id'))->not->toContain($ownerTx->id);
+
+    // Le solde reste calculé sur toutes les transactions malgré le filtre d'affichage.
+    $running = $component->viewData('running');
+    expect($running[$memberTx->id])->toBe(1200.0); // 2000 - 500 - 300
+});
+
+it('summarizes this month depenses by payer including common', function (): void {
+    $this->travelTo(now()->setDate(2026, 3, 10));
+
+    $owner = User::factory()->create();
+    $member = User::factory()->create();
+    $household = $owner->currentHousehold;
+    $member->households()->attach($household->id, ['role' => 'member']);
+
+    $category = $household->categories()->create(['name' => 'Loyer', 'type' => 'depense', 'position' => 1]);
+
+    $household->transactions()->create([
+        'category_id' => $category->id, 'user_id' => $owner->id, 'paid_by_user_id' => $owner->id,
+        'date' => '2026-03-05', 'date_effective' => '2026-03-05', 'amount' => 500,
+    ]);
+    $household->transactions()->create([
+        'category_id' => $category->id, 'user_id' => $owner->id, 'paid_by_user_id' => $member->id,
+        'date' => '2026-03-06', 'date_effective' => '2026-03-06', 'amount' => 300,
+    ]);
+    $household->transactions()->create([
+        'category_id' => $category->id, 'user_id' => $owner->id, 'paid_by_user_id' => null,
+        'date' => '2026-03-07', 'date_effective' => '2026-03-07', 'amount' => 100,
+    ]);
+
+    $component = Livewire::actingAs($owner)->test(Index::class);
+    $summary = $component->viewData('paidBySummary')->keyBy('label');
+
+    expect($summary[$owner->name]['total'])->toBe(500.0);
+    expect($summary[$member->name]['total'])->toBe(300.0);
+    expect($summary['Commun']['total'])->toBe(100.0);
+});
+
 it('does not show another household transactions', function (): void {
     $ownerA = User::factory()->create();
     $ownerB = User::factory()->create();