diff --git a/app/Entities/Invoices/Invoice.php b/app/Entities/Invoices/Invoice.php
new file mode 100755
index 0000000..8a32c5b
--- /dev/null
+++ b/app/Entities/Invoices/Invoice.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Entities\Invoices;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Invoice extends Model
+{
+    protected $guarded = ['id','created_at','updated_at'];
+
+    protected $casts = ['items' => 'array'];
+
+    public function getRouteKeyName()
+    {
+        return 'invoice_no';
+    }
+}
diff --git a/app/Http/Controllers/InvoiceDraftController.php b/app/Http/Controllers/InvoiceDraftController.php
new file mode 100644
index 0000000..9bd5c5f
--- /dev/null
+++ b/app/Http/Controllers/InvoiceDraftController.php
@@ -0,0 +1,133 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Entities\Projects\Project;
+use App\Services\InvoiceDrafts\InvoiceDraft;
+use App\Services\InvoiceDrafts\InvoiceDraftCollection;
+use App\Services\InvoiceDrafts\Item;
+use Illuminate\Http\Request;
+
+class InvoiceDraftController extends Controller
+{
+    private $draftCollection;
+
+    public function __construct()
+    {
+        $this->draftCollection = new InvoiceDraftCollection();
+    }
+
+    public function index(Request $request)
+    {
+        $draft = $this->draftCollection->content()->first();
+        $projects = Project::pluck('name', 'id');
+
+        return view('invoices.create', compact('draft', 'projects'));
+    }
+
+    public function show(Request $request, $draftKey = null)
+    {
+        $draft = $draftKey ? $this->draftCollection->get($draftKey) : $this->draftCollection->content()->first();
+        if (is_null($draft)) {
+            flash(trans('invoice.draft_not_found'), 'danger');
+
+            return redirect()->route('invoices.create');
+        }
+
+        $projects = Project::pluck('name', 'id');
+        return view('invoices.create', compact('draft', 'projects'));
+    }
+
+    public function add(Request $request)
+    {
+        $this->draftCollection->add(new InvoiceDraft());
+
+        return redirect()->route('invoices.create', $this->draftCollection->content()->last()->draftKey);
+    }
+
+    public function addDraftItem(Request $request, $draftKey)
+    {
+        $item = new Item(['description' => $request->description, 'amount' => $request->amount]);
+        $this->draftCollection->addItemToDraft($draftKey, $item);
+
+        flash(trans('invoice.item_added'));
+
+        return back();
+    }
+
+    public function updateDraftItem(Request $request, $draftKey)
+    {
+        $this->draftCollection->updateDraftItem($draftKey, $request->item_key, $request->only('description', 'amount'));
+
+        return back();
+    }
+
+    public function removeDraftItem(Request $request, $draftKey)
+    {
+        $this->draftCollection->removeItemFromDraft($draftKey, $request->item_index);
+
+        return back();
+    }
+
+    public function empty($draftKey)
+    {
+        $this->draftCollection->emptyDraft($draftKey);
+
+        return redirect()->route('invoices.create', $draftKey);
+    }
+
+    public function remove(Request $request)
+    {
+        $this->draftCollection->removeDraft($request->draft_key);
+
+        if ($this->draftCollection->isEmpty()) {
+            return redirect()->route('invoices.create-empty');
+        }
+
+        $lastDraft = $this->draftCollection->content()->last();
+
+        return redirect()->route('invoices.create', $lastDraft->draftKey);
+    }
+
+    public function destroy()
+    {
+        $this->draftCollection->destroy();
+        flash(trans('invoice.draft_destroyed'), 'warning');
+
+        return redirect()->route('cart.index');
+    }
+
+    public function proccess(Request $request, $draftKey)
+    {
+        $this->validate($request, [
+            'project_id' => 'required|exists:projects,id',
+            'notes'      => 'nullable|string|max:100',
+        ]);
+
+        $draft = $this->draftCollection->updateDraftAttributes($draftKey, $request->only('project_id', 'notes'));
+
+        if ($draft->getItemsCount() == 0) {
+            flash(trans('invoice.item_list_empty'), 'warning')->important();
+
+            return redirect()->route('invoices.create', [$draftKey]);
+        }
+
+        flash(trans('invoice.confirm_instruction', ['back_link' => link_to_route('invoices.create', trans('app.back'), $draftKey)]), 'warning')->important();
+
+        return redirect()->route('invoices.create', [$draftKey, 'action' => 'confirm']);
+    }
+
+    public function store(Request $request, $draftKey)
+    {
+        $draft = $this->draftCollection->get($draftKey);
+        if (is_null($draft)) {
+            return redirect()->route('cart.index');
+        }
+
+        $invoice = $draft->store();
+        $draft->destroy();
+        flash(trans('invoice.created', ['invoice_no' => $invoice->invoice_no]), 'success')->important();
+
+        return redirect()->route('invoices.show', $invoice->invoice_no);
+    }
+}
diff --git a/app/Http/Controllers/InvoicesController.php b/app/Http/Controllers/InvoicesController.php
new file mode 100644
index 0000000..d86c4f6
--- /dev/null
+++ b/app/Http/Controllers/InvoicesController.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Entities\Invoices\Invoice;
+use Illuminate\Http\Request;
+
+class InvoicesController extends Controller
+{
+    public function show(Invoice $invoice)
+    {
+        return $invoice;
+    }
+}
diff --git a/app/Services/InvoiceDraft/InvoiceDraft.php b/app/Services/InvoiceDraft/InvoiceDraft.php
new file mode 100644
index 0000000..0ff4fa3
--- /dev/null
+++ b/app/Services/InvoiceDraft/InvoiceDraft.php
@@ -0,0 +1,113 @@
+<?php
+
+namespace App\Services\InvoiceDrafts;
+
+use App\Entities\Invoices\Invoice;
+
+/**
+ * Invoice Draft.
+ */
+class InvoiceDraft
+{
+    public $items = [];
+
+    public $projectId;
+    public $notes;
+
+    public function items()
+    {
+        return collect($this->items)->sortBy('name');
+    }
+
+    public function addItem(Item $item)
+    {
+        $this->items[] = $item;
+
+        return $item;
+    }
+
+    public function removeItem($itemKey)
+    {
+        unset($this->items[$itemKey]);
+    }
+
+    public function empty()
+    {
+        $this->items = [];
+    }
+
+    public function getTotal()
+    {
+        return $this->items()->sum('amount');
+    }
+
+    public function getItemsCount()
+    {
+        return $this->items()->count();
+    }
+
+    public function updateItem($itemKey, $newItemData)
+    {
+        if (!isset($this->items[$itemKey])) {
+            return;
+        }
+
+        $item = $this->items[$itemKey];
+
+        $this->items[$itemKey] = $item->updateAttribute($newItemData);
+
+        return $item;
+    }
+
+    public function store()
+    {
+        $invoice = new Invoice();
+        $invoice->invoice_no = $this->getNewInvoiceNo();
+        $invoice->items = $this->getItemsArray();
+        $invoice->project_id = $this->projectId;
+        $invoice->amount = $this->getTotal();
+        $invoice->notes = $this->notes;
+        $invoice->status_id = 1;
+        $invoice->user_id = auth()->id() ?: 1;
+
+        $invoice->save();
+
+        return $invoice;
+    }
+
+    public function getNewInvoiceNo()
+    {
+        $prefix = date('ym');
+
+        $lastInvoice = Invoice::orderBy('invoice_no', 'desc')->first();
+
+        if (!is_null($lastInvoice)) {
+            $lastInvoiceNo = $lastInvoice->invoice_no;
+            if (substr($lastInvoiceNo, 0, 4) == $prefix) {
+                return ++$lastInvoiceNo;
+            }
+        }
+
+        return $prefix.'0001';
+    }
+
+    protected function getItemsArray()
+    {
+        $items = [];
+        foreach ($this->items as $item) {
+            $items[] = [
+                'description' => $item->description,
+                'amount'      => $item->amount,
+            ];
+        }
+
+        return $items;
+    }
+
+    public function destroy()
+    {
+        $cart = app(InvoiceDraftCollection::class);
+
+        return $cart->removeDraft($this->draftKey);
+    }
+}
diff --git a/app/Services/InvoiceDraft/InvoiceDraftCollection.php b/app/Services/InvoiceDraft/InvoiceDraftCollection.php
new file mode 100644
index 0000000..d20aa6e
--- /dev/null
+++ b/app/Services/InvoiceDraft/InvoiceDraftCollection.php
@@ -0,0 +1,150 @@
+<?php
+
+namespace App\Services\InvoiceDrafts;
+
+use App\Product;
+use Illuminate\Support\Collection;
+
+/**
+ * InvoiceDraft Collection Class.
+ */
+class InvoiceDraftCollection
+{
+    private $instance;
+    private $session;
+
+    public function __construct()
+    {
+        $this->session = session();
+        $this->instance('drafts');
+    }
+
+    public function instance($instance = null)
+    {
+        $instance = $instance ?: 'drafts';
+
+        $this->instance = sprintf('%s.%s', 'invoices', $instance);
+
+        return $this;
+    }
+
+    public function currentInstance()
+    {
+        return str_replace('invoices.', '', $this->instance);
+    }
+
+    public function add(InvoiceDraft $draft)
+    {
+        $content = $this->getContent();
+        $draft->draftKey = str_random(10);
+        $content->put($draft->draftKey, $draft);
+
+        $this->session->put($this->instance, $content);
+
+        return $draft;
+    }
+
+    public function get($draftKey)
+    {
+        $content = $this->getContent();
+        if (isset($content[$draftKey])) {
+            return $content[$draftKey];
+        }
+    }
+
+    public function updateDraftAttributes($draftKey, $draftAttributes)
+    {
+        $content = $this->getContent();
+
+        $content[$draftKey]->projectId = $draftAttributes['project_id'];
+        $content[$draftKey]->notes = $draftAttributes['notes'];
+
+        $this->session->put($this->instance, $content);
+
+        return $content[$draftKey];
+    }
+
+    public function emptyDraft($draftKey)
+    {
+        $content = $this->getContent();
+        $content[$draftKey]->empty();
+        $this->session->put($this->instance, $content);
+    }
+
+    public function removeDraft($draftKey)
+    {
+        $content = $this->getContent();
+        $content->pull($draftKey);
+        $this->session->put($this->instance, $content);
+    }
+
+    public function content()
+    {
+        return $this->getContent();
+    }
+
+    protected function getContent()
+    {
+        $content = $this->session->has($this->instance) ? $this->session->get($this->instance) : collect([]);
+
+        return $content;
+    }
+
+    public function keys()
+    {
+        return $this->getContent()->keys();
+    }
+
+    public function destroy()
+    {
+        $this->session->remove($this->instance);
+    }
+
+    public function addItemToDraft($draftKey, Item $item)
+    {
+        $content = $this->getContent();
+        $content[$draftKey]->addItem($item);
+
+        $this->session->put($this->instance, $content);
+
+        return $item;
+    }
+
+    public function draftHasItem(TrasactionDraft $draft, Product $product)
+    {
+        $item = $draft->search($product);
+
+        return !is_null($item);
+    }
+
+    public function updateDraftItem($draftKey, $itemKey, $newItemData)
+    {
+        $content = $this->getContent();
+        $content[$draftKey]->updateItem($itemKey, $newItemData);
+
+        $this->session->put($this->instance, $content);
+    }
+
+    public function removeItemFromDraft($draftKey, $itemKey)
+    {
+        $content = $this->getContent();
+        $content[$draftKey]->removeItem($itemKey);
+
+        $this->session->put($this->instance, $content);
+    }
+
+    public function count()
+    {
+        return $this->getContent()->count();
+    }
+
+    public function isEmpty()
+    {
+        return $this->count() == 0;
+    }
+
+    public function hasContent()
+    {
+        return !$this->isEmpty();
+    }
+}
diff --git a/app/Services/InvoiceDraft/Item.php b/app/Services/InvoiceDraft/Item.php
new file mode 100644
index 0000000..e26d710
--- /dev/null
+++ b/app/Services/InvoiceDraft/Item.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Services\InvoiceDrafts;
+
+/**
+ * Draft Item class.
+ */
+class Item
+{
+    public $description;
+    public $amount;
+
+    public function __construct(array $itemDetail)
+    {
+        $this->description = $itemDetail['description'];
+        $this->amount = $itemDetail['amount'];
+    }
+
+    public function updateAttribute(array $newItemData)
+    {
+        if (isset($newItemData['description'])) {
+            $this->description = $newItemData['description'];
+        }
+        if (isset($newItemData['amount'])) {
+            $this->amount = $newItemData['amount'];
+        }
+
+        return $this;
+    }
+}
diff --git a/database/migrations/2017_10_05_162758_create_invoices_table.php b/database/migrations/2017_10_05_162758_create_invoices_table.php
new file mode 100644
index 0000000..856adcc
--- /dev/null
+++ b/database/migrations/2017_10_05_162758_create_invoices_table.php
@@ -0,0 +1,38 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateInvoicesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('invoices', function (Blueprint $table) {
+            $table->increments('id');
+            $table->unsignedInteger('project_id');
+            $table->string('invoice_no', 8);
+            $table->text('items');
+            $table->unsignedInteger('amount');
+            $table->string('notes');
+            $table->unsignedTinyInteger('status_id');
+            $table->unsignedInteger('user_id');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('invoices');
+    }
+}
diff --git a/resources/lang/id/invoice.php b/resources/lang/id/invoice.php
new file mode 100644
index 0000000..710cc6b
--- /dev/null
+++ b/resources/lang/id/invoice.php
@@ -0,0 +1,31 @@
+<?php
+
+return [
+    // Labels
+    'invoice'        => 'Invoice',
+    'list'           => 'Daftar Invoice',
+    'search'         => 'Cari Invoice',
+    'detail'         => 'Detail Invoice',
+    'not_found'      => 'Invoice tidak ditemukan',
+    'empty'          => 'Belum ada Invoice',
+    'back_to_index'  => 'Kembali ke daftar Invoice',
+
+    // Actions
+    'proccess'       => 'Proses Invoice',
+    'create'         => 'Input Invoice Baru',
+    'created'        => 'Input Invoice baru telah berhasil.',
+    'show'           => 'Detail Invoice',
+    'edit'           => 'Edit Invoice',
+    'update'         => 'Update Invoice',
+    'updated'        => 'Update data Invoice telah berhasil.',
+    'delete'         => 'Hapus Invoice',
+    'delete_confirm' => 'Anda yakin akan menghapus Invoice ini?',
+    'deleted'        => 'Hapus data Invoice telah berhasil.',
+    'undeleted'      => 'Data Invoice gagal dihapus.',
+    'undeleteable'   => 'Data Invoice tidak dapat dihapus.',
+
+    // Attributes
+    'project'        => 'Project',
+    'items'          => 'Item Invoice',
+    'notes'          => 'Catatan',
+];
diff --git a/resources/views/invoices/create.blade.php b/resources/views/invoices/create.blade.php
new file mode 100644
index 0000000..01d47f3
--- /dev/null
+++ b/resources/views/invoices/create.blade.php
@@ -0,0 +1,26 @@
+@extends('layouts.app')
+
+@section('title', 'Entry Invoice')
+
+@section('content')
+<div class="pull-right">
+    <form action="{{ route('invoices.add') }}" method="POST">
+        {{ csrf_field() }}
+        <input type="submit" class="btn btn-default navbar-btn" name="create-invoice-draft" id="invoice-draft-create-button" value="{{ trans('invoice.create') }}">
+    </form>
+</div>
+<h1 class="page-header">{{ trans('invoice.list') }}</h1>
+
+<?php use Facades\App\Services\InvoiceDrafts\InvoiceDraftCollection; ?>
+@includeWhen(! InvoiceDraftCollection::isEmpty(), 'invoices.partials.invoice-draft-tabs')
+@if ($draft)
+    @if (Request::get('action') == 'confirm')
+        @include('invoices.partials.draft-confirm')
+    @else
+        <div class="row">
+            <div class="col-md-9">@include('invoices.partials.draft-item-list')</div>
+            <div class="col-md-3">@include('invoices.partials.form-draft-detail')</div>
+        </div>
+    @endif
+@endif
+@endsection
\ No newline at end of file
diff --git a/resources/views/invoices/partials/draft-confirm.blade.php b/resources/views/invoices/partials/draft-confirm.blade.php
new file mode 100644
index 0000000..d7d0350
--- /dev/null
+++ b/resources/views/invoices/partials/draft-confirm.blade.php
@@ -0,0 +1,59 @@
+<div class="row">
+    <div class="col-md-8">
+        <div class="panel panel-default">
+            <div class="panel-heading"><h3 class="panel-title">{{ trans('invoice.confirm') }}</h3></div>
+            <div class="panel-body">
+                <table class="table">
+                    <thead>
+                        <tr>
+                            <th>#</th>
+                            <th>Deskripsi</th>
+                            <th class="text-right">Biaya</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        @forelse($draft->items() as $key => $item)
+                        <tr>
+                            <td>{{ $key + 1 }}</td>
+                            <td>{{ $item->description }}</td>
+                            <td class="text-right">{{ formatRp($item->amount) }}</td>
+                        </tr>
+                        @empty
+                        @endforelse
+                    </tbody>
+                    <tfoot>
+                        <tr>
+                            <th colspan="5" class="text-right">{{ trans('invoice.total') }} :</th>
+                            <th class="text-right">{{ formatRp($draft->getTotal()) }}</th>
+                        </tr>
+                    </tfoot>
+                </table>
+            </div>
+        </div>
+    </div>
+    <div class="col-md-4">
+        <div class="panel panel-default">
+            <div class="panel-heading"><h3 class="panel-title">{{ trans('invoice.detail') }}</h3></div>
+            <div class="panel-body">
+                <table class="table table-condensed">
+                    <tbody>
+                        <tr>
+                            <td>{{ trans('invoice.project') }}</td>
+                            <td>
+                                {{ App\Entities\Projects\Project::findOrFail($draft->projectId)->name }}
+                            </td>
+                        </tr>
+                        <tr><td>{{ trans('invoice.total') }}</td><th class="text-right">{{ formatRp($draft->getTotal()) }}</th></tr>
+                        <tr><td>{{ trans('invoice.notes') }}</td><td>{{ $draft->notes }}</td></tr>
+                    </tbody>
+                </table>
+            </div>
+            <div class="panel-footer">
+                {{ Form::open(['route' => ['invoices.store', $draft->draftKey]]) }}
+                {{ Form::submit(trans('invoice.save'), ['id' => 'save-invoice-draft', 'class' => 'btn btn-success']) }}
+                {{ link_to_route('invoices.create', trans('app.back'), $draft->draftKey, ['class' => 'btn btn-default']) }}
+                {{ Form::close() }}
+            </div>
+        </div>
+    </div>
+</div>
\ No newline at end of file
diff --git a/resources/views/invoices/partials/draft-item-list.blade.php b/resources/views/invoices/partials/draft-item-list.blade.php
new file mode 100644
index 0000000..2c8512e
--- /dev/null
+++ b/resources/views/invoices/partials/draft-item-list.blade.php
@@ -0,0 +1,62 @@
+<legend>
+    {{ trans('invoice.items') }}
+    <small class="text-muted">
+        ({{ $draft->getItemsCount() }} Item)
+    </small>
+</legend>
+
+<div class="panel panel-default">
+    <div class="panel-body table-responsive">
+        <table class="table">
+            <thead>
+                <tr>
+                    <th>#</th>
+                    <th>Deskripsi</th>
+                    <th>Biaya</th>
+                    <th class="text-center">Action</th>
+                </tr>
+            </thead>
+            <tbody>
+            <?php $no = 1 ?>
+            @forelse($draft->items() as $key => $item)
+                <tr>
+                    <td>{{ $no }} <?php $no++ ?></td>
+                        {{ Form::open(['route' => ['cart.update-draft-item', $draft->draftKey], 'method' => 'patch']) }}
+                        {{ Form::hidden('item_key', $key) }}
+                    <td>{{ Form::text('description', $item->description, ['id' => 'description-' . $key]) }}</td>
+                    <td>
+                        {{ Form::number('amount', $item->amount, ['id' => 'amount-' . $key]) }}
+                    </td>
+                        {{ Form::submit('update-item-' . $key, ['style'=>'display:none']) }}
+                        {{ Form::close() }}
+                    <td class="text-center show-on-hover-parent">
+                        {!! FormField::delete([
+                            'route' => ['cart.remove-draft-item', $draft->draftKey],
+                            'onsubmit' => 'Yakin ingin menghapus Item ini?',
+                            'class' => '',
+                        ], 'x', ['id' => 'remove-item-' . $key, 'class' => 'btn btn-danger btn-xs show-on-hover','title' => 'Hapus item ini'], ['item_index' => $key]) !!}
+                    </td>
+                </tr>
+            @empty
+            @endforelse
+                <tr>
+                    <td></td>
+                    {{ Form::open(['route' => ['cart.add-draft-item', $draft->draftKey]]) }}
+                    <td>{{ Form::text('description', null, ['id' => 'description']) }}</td>
+                    <td>
+                        {{ Form::number('amount', null, ['id' => 'amount']) }}
+                    </td>
+                    <td class="text-center">{{ Form::submit('add-item', ['class' => 'btn btn-primary']) }}</td>
+                    {{ Form::close() }}
+                </tr>
+            </tbody>
+            <tfoot>
+                <tr>
+                    <th colspan="2" class="text-right">{{ trans('invoice.amount') }} :</th>
+                    <th class="text-right">{{ formatRp($draft->getTotal()) }}</th>
+                    <th></th>
+                </tr>
+            </tfoot>
+        </table>
+    </div>
+</div>
\ No newline at end of file
diff --git a/resources/views/invoices/partials/form-draft-detail.blade.php b/resources/views/invoices/partials/form-draft-detail.blade.php
new file mode 100644
index 0000000..feba000
--- /dev/null
+++ b/resources/views/invoices/partials/form-draft-detail.blade.php
@@ -0,0 +1,6 @@
+<legend>{{ trans('invoice.detail') }}</legend>
+{{ Form::open(['route' => ['cart.draft-proccess', $draft->draftKey], 'method' => 'patch']) }}
+{!! FormField::select('project_id', $projects, ['label' => trans('invoice.project'), 'required' => true]) !!}
+{!! FormField::textarea('notes', ['label' => trans('invoice.notes'), 'value' => $draft->notes]) !!}
+{{ Form::submit(trans('invoice.proccess'), ['class' => 'btn btn-info']) }}
+{{ Form::close() }}
\ No newline at end of file
diff --git a/resources/views/invoices/partials/invoice-draft-tabs.blade.php b/resources/views/invoices/partials/invoice-draft-tabs.blade.php
new file mode 100644
index 0000000..95efe9f
--- /dev/null
+++ b/resources/views/invoices/partials/invoice-draft-tabs.blade.php
@@ -0,0 +1,17 @@
+<?php use Facades\App\Services\InvoiceDrafts\InvoiceDraftCollection; ?>
+<ul class="nav nav-tabs transaction-draft-tabs">
+    @foreach(InvoiceDraftCollection::content() as $key => $content)
+        <?php $active = ($draft->draftKey == $key) ? 'class=active' : '' ?>
+        <li {{ $active }} role="presentation">
+            <a href="{{ route('invoices.create', $key) }}">
+                {{ trans('invoice.invoice') }} - {{ $key }}
+                <form action="{{ route('cart.remove') }}" method="post" style="display:inline" onsubmit="return confirm('Yakin ingin menghapus Draft Transaksi ini?')">
+                    {{ csrf_field() }}
+                    {{ method_field('delete') }}
+                    <input type="hidden" name="draft_key" value="{{ $key }}">
+                    <input type="submit" value="x" style="margin: -2px -7px 0px 0px" class="btn-link btn-xs pull-right">
+                </form>
+            </a>
+        </li>
+    @endforeach
+</ul><!-- Tab panes -->
\ No newline at end of file
diff --git a/routes/web.php b/routes/web.php
index 7214f73..972acf5 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -11,5 +11,6 @@ require __DIR__ . '/web/projects.php';
 require __DIR__ . '/web/payments.php';
 require __DIR__ . '/web/subscriptions.php';
 require __DIR__ . '/web/reports.php';
+require __DIR__ . '/web/invoices.php';
 require __DIR__ . '/web/options-vue.php';
 require __DIR__ . '/web/calendar.php';
\ No newline at end of file
diff --git a/routes/web/invoices.php b/routes/web/invoices.php
new file mode 100644
index 0000000..4f115c2
--- /dev/null
+++ b/routes/web/invoices.php
@@ -0,0 +1,23 @@
+<?php
+
+Route::group(['middleware' => ['web','role:admin']], function() {
+    /*
+     * Invoice Draft Routes
+     */
+    Route::get('invoices/create', 'InvoiceDraftController@index')->name('invoices.create-empty');
+    Route::get('invoices/create/{draftKey?}', 'InvoiceDraftController@show')->name('invoices.create');
+    Route::post('invoices/create/{draftKey}', 'InvoiceDraftController@store')->name('invoices.store');
+    Route::post('invoices/add-draft', 'InvoiceDraftController@add')->name('invoices.add');
+    Route::post('cart/add-draft-item/{draftKey}', 'InvoiceDraftController@addDraftItem')->name('cart.add-draft-item');
+    Route::patch('cart/update-draft-item/{draftKey}', 'InvoiceDraftController@updateDraftItem')->name('cart.update-draft-item');
+    Route::patch('cart/{draftKey}/proccess', 'InvoiceDraftController@proccess')->name('cart.draft-proccess');
+    Route::delete('cart/remove-draft-item/{draftKey}', 'InvoiceDraftController@removeDraftItem')->name('cart.remove-draft-item');
+    Route::delete('cart/empty/{draftKey}', 'InvoiceDraftController@empty')->name('cart.empty');
+    Route::delete('cart/remove', 'InvoiceDraftController@remove')->name('cart.remove');
+    Route::delete('cart/destroy', 'InvoiceDraftController@destroy')->name('cart.destroy');
+
+    /*
+     * Invoices Routes
+     */
+    Route::get('invoices/{invoice}', ['as' => 'invoices.show', 'uses' => 'InvoicesController@show']);
+});
diff --git a/tests/Feature/InvoiceEntryTest.php b/tests/Feature/InvoiceEntryTest.php
new file mode 100644
index 0000000..fba5024
--- /dev/null
+++ b/tests/Feature/InvoiceEntryTest.php
@@ -0,0 +1,169 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Entities\Projects\Project;
+use App\Services\InvoiceDrafts\InvoiceDraft;
+use App\Services\InvoiceDrafts\InvoiceDraftCollection;
+use App\Services\InvoiceDrafts\Item;
+use Tests\TestCase;
+
+class InvoiceEntryTest extends TestCase
+{
+    /** @test */
+    public function user_can_visit_invoice_drafts_page()
+    {
+        $this->adminUserSigningIn();
+
+        // Add new draft to collection
+        $cart = new InvoiceDraftCollection();
+        $draft = $cart->add(new InvoiceDraft());
+
+        $this->visit(route('invoices.create'));
+
+        $this->assertViewHas('draft', $draft);
+    }
+
+    /** @test */
+    public function user_can_create_invoice_draft_by_invoice_create_button()
+    {
+        $this->adminUserSigningIn();
+        $this->visit(route('invoices.create'));
+
+        $this->press(trans('invoice.create'));
+        $cart = new InvoiceDraftCollection();
+        $draft = $cart->content()->last();
+        $this->seePageIs(route('invoices.create', $draft->draftKey));
+    }
+
+    /** @test */
+    public function user_can_add_item_to_cash_draft()
+    {
+        $this->adminUserSigningIn();
+
+        $cart = new InvoiceDraftCollection();
+        $draft = new InvoiceDraft();
+        $cart->add($draft);
+
+        $this->visit(route('invoices.create', [$draft->draftKey]));
+
+        $this->type('Testing deskripsi invoice item', 'description');
+        $this->type(2000, 'amount');
+        $this->press('add-item');
+
+        $this->see(trans('invoice.item_added'));
+
+        $this->type('Testing deskripsi invoice item', 'description');
+        $this->type(3000, 'amount');
+        $this->press('add-item');
+
+        $this->seePageIs(route('invoices.create', $draft->draftKey));
+        $this->assertEquals(5000, $draft->getTotal());
+        $this->see(formatRp(5000));
+    }
+
+    /** @test */
+    public function user_can_update_item_attribute()
+    {
+        $cart = new InvoiceDraftCollection();
+
+        $draft = $cart->add(new InvoiceDraft());
+
+        $item1 = new Item(['description' => 'Deskripsi item invoice', 'amount' => 1000]);
+        $item2 = new Item(['description' => 'Deskripsi item invoice', 'amount' => 2000]);
+
+        // Add items to draft
+        $cart->addItemToDraft($draft->draftKey, $item1);
+        $cart->addItemToDraft($draft->draftKey, $item2);
+
+        $this->adminUserSigningIn();
+        $this->visit(route('invoices.create', $draft->draftKey));
+
+        $this->submitForm('update-item-0', [
+            'item_key'    => 0,
+            'description' => 'Testing deskripsi Update',
+            'amount'      => 100,
+        ]);
+
+        $this->submitForm('update-item-1', [
+            'item_key'    => 1,
+            'description' => 'Testing deskripsi Update',
+            'amount'      => 100,
+        ]);
+
+        $this->assertEquals(200, $draft->getTotal());
+
+        $this->see(formatRp($draft->getTotal()));
+    }
+
+    /** @test */
+    public function user_can_update_draft_transaction_detail_and_get_confirm_page()
+    {
+        $project = factory(Project::class)->create();
+        $cart = new InvoiceDraftCollection();
+
+        $draft = $cart->add(new InvoiceDraft());
+
+        $item1 = new Item(['description' => 'Deskripsi item invoice', 'amount' => 1000]);
+        $item2 = new Item(['description' => 'Deskripsi item invoice', 'amount' => 2000]);
+
+        // Add items to draft
+        $cart->addItemToDraft($draft->draftKey, $item1);
+        $cart->addItemToDraft($draft->draftKey, $item2);
+
+        $this->adminUserSigningIn();
+        $this->visit(route('invoices.create', $draft->draftKey));
+
+        $this->type($project->id, 'project_id');
+        $this->type('catatan', 'notes');
+        $this->press(trans('invoice.proccess'));
+
+        $this->seePageIs(route('invoices.create', [$draft->draftKey, 'action' => 'confirm']));
+
+        $this->see(trans('invoice.confirm'));
+        $this->see($project->name);
+        $this->see($draft->notes);
+        $this->see(formatRp(3000));
+        $this->seeElement('input', ['id' => 'save-invoice-draft']);
+    }
+
+    /** @test */
+    public function user_can_save_transaction_if_draft_is_completed()
+    {
+        $cart = new InvoiceDraftCollection();
+
+        $draft = $cart->add(new InvoiceDraft());
+
+        $item1 = new Item(['description' => 'Deskripsi item invoice', 'amount' => 1000]);
+        $item2 = new Item(['description' => 'Deskripsi item invoice', 'amount' => 2000]);
+        $project = factory(Project::class)->create();
+
+        // Add items to draft
+        $cart->addItemToDraft($draft->draftKey, $item1);
+        $cart->addItemToDraft($draft->draftKey, $item2);
+
+        $draftAttributes = [
+            'project_id' => $project->id,
+            'notes'   => 'Catatan',
+        ];
+        $cart->updateDraftAttributes($draft->draftKey, $draftAttributes);
+
+        $user = $this->adminUserSigningIn();
+        $this->visit(route('invoices.create', [$draft->draftKey, 'action' => 'confirm']));
+
+        $this->press(trans('invoice.save'));
+
+        // $this->seePageIs(route('invoices.show', date('ym').'0001'));
+        // $this->see(trans('invoice.created', ['invoice_no' => date('ym').'0001']));
+
+        $this->seeInDatabase('invoices', [
+            'invoice_no' => date('ym').'0001',
+            'items'      => '[{"description":"Deskripsi item invoice","amount":1000},{"description":"Deskripsi item invoice","amount":2000}]',
+            'project_id' => $project->id,
+            'amount'     => 3000,
+            'notes'      => 'Catatan',
+            'user_id'    => $user->id,
+            'status_id'  => 1,
+        ]);
+    }
+}
diff --git a/tests/Unit/InvoiceDraftCollectionTest.php b/tests/Unit/InvoiceDraftCollectionTest.php
new file mode 100644
index 0000000..6ed8f35
--- /dev/null
+++ b/tests/Unit/InvoiceDraftCollectionTest.php
@@ -0,0 +1,152 @@
+<?php
+
+namespace Tests\Unit;
+
+use App\Services\InvoiceDrafts\Item;
+use App\Services\InvoiceDrafts\InvoiceDraft;
+use App\Services\InvoiceDrafts\InvoiceDraftCollection;
+use Tests\TestCase;
+
+class InvoiceDraftCollectionTest extends TestCase
+{
+    /** @test */
+    public function it_has_a_default_instance()
+    {
+        $cart = new InvoiceDraftCollection();
+        $this->assertEquals('drafts', $cart->currentInstance());
+    }
+
+    /** @test */
+    public function it_can_have_multiple_instances()
+    {
+        $cart = new InvoiceDraftCollection();
+
+        $draft = new InvoiceDraft();
+
+        $cart->add($draft);
+        $cart->instance('wishlist')->add($draft);
+
+        $this->assertCount(1, $cart->instance('drafts')->content());
+        $this->assertCount(1, $cart->instance('wishlist')->content());
+    }
+
+    /** @test */
+    public function cart_collection_consist_of_invoice_draft()
+    {
+        $cart = new InvoiceDraftCollection();
+        $draft = new InvoiceDraft();
+
+        $cart->add($draft);
+
+        $this->assertCount(1, $cart->content());
+        $this->assertTrue($cart->hasContent());
+    }
+
+    /** @test */
+    public function it_can_get_a_draft_by_key()
+    {
+        $draft = new InvoiceDraft();
+        $cart = new InvoiceDraftCollection();
+
+        $cart->add($draft);
+        $gottenDraft = $cart->get($draft->draftKey);
+        $invalidDraft = $cart->get('random_key');
+
+        $this->assertEquals($draft, $gottenDraft);
+        $this->assertNull($invalidDraft);
+    }
+
+    /** @test */
+    public function it_can_remove_draft_from_draft_collection()
+    {
+        $cart = new InvoiceDraftCollection();
+        $draft = new InvoiceDraft();
+
+        $cart->add($draft);
+
+        $this->assertCount(1, $cart->content());
+        $cart->removeDraft($cart->content()->keys()->last());
+        $this->assertCount(0, $cart->content());
+    }
+
+    /** @test */
+    public function it_can_be_empty_out()
+    {
+        $cart = new InvoiceDraftCollection();
+
+        $draft = new InvoiceDraft();
+
+        $cart->add($draft);
+        $cart->add($draft);
+        $cart->add($draft);
+
+        $this->assertCount(3, $cart->content());
+        $cart->destroy();
+
+        $this->assertCount(0, $cart->content());
+        $this->assertTrue($cart->isEmpty());
+    }
+
+    /** @test */
+    public function it_has_content_keys()
+    {
+        $cart = new InvoiceDraftCollection();
+
+        $draft = new InvoiceDraft();
+
+        $cart->add($draft);
+
+        $this->assertCount(1, $cart->keys());
+        $cart->removeDraft($cart->content()->keys()->last());
+        $this->assertCount(0, $cart->keys());
+    }
+
+    /** @test */
+    public function it_can_add_item_to_draft()
+    {
+        $cart = new InvoiceDraftCollection();
+
+        $draft = $cart->add(new InvoiceDraft());
+        $item = new Item(['description' => 'Deskripsi item invoice', 'amount' => 1000]);
+
+        $cart->addItemToDraft($draft->draftKey, $item);
+        $cart->addItemToDraft($draft->draftKey, $item);
+        $this->assertEquals(2000, $draft->getTotal());
+        $this->assertEquals(2, $draft->getItemsCount());
+    }
+
+    /** @test */
+    public function it_can_remove_item_from_draft()
+    {
+        $cart = new InvoiceDraftCollection();
+
+        $draft = $cart->add(new InvoiceDraft());
+        $item = new Item(['description' => 'Deskripsi item invoice', 'amount' => 1000]);
+
+        $cart->addItemToDraft($draft->draftKey, $item);
+        $this->assertCount(1, $draft->items());
+        $cart->removeItemFromDraft($draft->draftKey, 0);
+        $this->assertCount(0, $draft->items());
+        $this->assertEquals(0, $draft->getTotal());
+    }
+
+    /** @test */
+    public function it_can_update_an_item_of_draft()
+    {
+        $cart = new InvoiceDraftCollection();
+
+        $draft = $cart->add(new InvoiceDraft());
+        $item = new Item(['description' => 'Deskripsi item invoice', 'amount' => 1000]);
+
+        $cart->addItemToDraft($draft->draftKey, $item);
+        $this->assertCount(1, $draft->items());
+        $this->assertEquals(1000, $draft->getTotal());
+
+        $newItemData = [
+            'amount' => 100,
+        ];
+
+        $cart->updateDraftItem($draft->draftKey, 0, $newItemData);
+        $this->assertEquals(100, $draft->getTotal());
+    }
+}