diff --git a/add_invoice_modal.php b/add_invoice_modal.php
new file mode 100644
index 00000000..ece76a3c
--- /dev/null
+++ b/add_invoice_modal.php
@@ -0,0 +1,52 @@
+<div class="modal fade" id="addInvoiceModal" tabindex="-1">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title"><i class="fa fa-file"></i> New Invoice</h5>
+        <button type="button" class="close" data-dismiss="modal">
+          <span aria-hidden="true">&times;</span>
+        </button>
+      </div>
+      <form action="post.php" method="post" autocomplete="off">
+        <div class="modal-body">
+          <div class="form-group">
+            <label>Client</label>
+            <div class="input-group">
+              <div class="input-group-prepend">
+                <span class="input-group-text"><i class="fa fa-user"></i></span>
+              </div>
+              <select class="form-control" name="client" required>
+                <option value="">- Customer -</option>
+                <?php 
+                
+                $sql = mysqli_query($mysqli,"SELECT * FROM clients"); 
+                while($row = mysqli_fetch_array($sql)){
+                  $client_id = $row['client_id'];
+                  $client_name = $row['client_name'];
+                ?>
+                  <option value="<?php echo "$client_id"; ?>"><?php echo "$client_name"; ?></option>
+                
+                <?php
+                }
+                ?>
+              </select>
+            </div>
+          </div>
+          <div class="form-group">
+            <label>Date</label>
+            <div class="input-group">
+              <div class="input-group-prepend">
+                <span class="input-group-text"><i class="fa fa-calendar"></i></span>
+              </div>
+              <input type="date" class="form-control" name="date" value="<?php echo date("Y-m-d"); ?>" required>
+            </div>
+          </div>
+        </div>
+        <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button>
+          <button type="submit" name="add_invoice" class="btn btn-primary">Save</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
\ No newline at end of file
diff --git a/invoices.php b/invoices.php
new file mode 100644
index 00000000..811b9c15
--- /dev/null
+++ b/invoices.php
@@ -0,0 +1,83 @@
+<?php include("header.php"); ?>
+
+<?php 
+ 
+  $sql = mysqli_query($mysqli,"SELECT * FROM invoices, clients
+    WHERE invoices.client_id = clients.client_id
+    ORDER BY invoices.invoice_date DESC");
+?>
+
+<div class="card mb-3">
+  <div class="card-header">
+    <h6 class="float-left mt-1"><i class="fa fa-file"></i> Invoices</h6>
+    <button type="button" class="btn btn-primary btn-sm float-right" data-toggle="modal" data-target="#addInvoiceModal"><i class="fas fa-plus"></i> Add New</button>
+  </div>
+  <div class="card-body">
+    <div class="table-responsive">
+      <table class="table table-striped table-borderless table-hover" id="dT" width="100%" cellspacing="0">
+        <thead>
+          <tr>
+            <th>Number</th>
+            <th>Client</th>
+            <th class="text-right">Amount</th>
+            <th>Date</th>
+            <th>Due</th>
+            <th>Status</th>
+            <th class="text-center">Actions</th>
+          </tr>
+        </thead>
+        <tbody>
+          <?php
+      
+          while($row = mysqli_fetch_array($sql)){
+            $invoice_id = $row['invoice_id'];
+            $invoice_number = $row['invoice_number'];
+            $invoice_status = $row['invoice_status'];
+            $invoice_date = $row['invoice_date'];
+            $invoice_due = $row['invoice_due'];
+            $invoice_amount = $row['invoice_amount'];
+            $client_id = $row['client_id'];
+            $client_name = $row['client_name'];
+
+          ?>
+
+          <tr>
+            <td><a href="invoice.php?invoice_id=<?php echo $invoice_id; ?>">INV-<?php echo "$invoice_number"; ?></a></td>
+            <td><a href="client.php?client_id=<?php echo $client_id; ?>"><?php echo "$client_name"; ?></a></td>
+            <td class="text-right text-monospace">$<?php echo "$invoice_amount"; ?></td>
+            <td><?php echo "$invoice_date"; ?></td>
+            <td><?php echo "$invoice_due"; ?></td>
+            <td><?php echo "$invoice_status"; ?></td>
+            <td>
+              <div class="dropdown dropleft text-center">
+                <button class="btn btn-secondary btn-sm" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+                  <i class="fas fa-ellipsis-h"></i>
+                </button>
+                <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
+                  <a class="dropdown-item" href="#" data-toggle="modal" data-target="#editinvoiceModal<?php echo $invoice_id; ?>">Edit</a>
+                  <a class="dropdown-item" href="#" data-toggle="modal" data-target="#addinvoiceCopyModal<?php echo $invoice_id; ?>">Copy</a>
+                  <a class="dropdown-item" href="#" data-toggle="modal" data-target="#addinvoiceCopyModal<?php echo $invoice_id; ?>">PDF</a>
+                  <a class="dropdown-item" href="#">Delete</a>
+                </div>
+              </div>      
+            </td>
+          </tr>
+
+          <?php
+
+          include("edit_invoice_modal.php");
+          include("add_invoice_copy_modal.php");
+          }
+
+          ?>
+
+        </tbody>
+      </table>
+    </div>
+  </div>
+  <div class="card-footer small text-muted">Updated yesterday at 11:59 PM</div>
+</div>
+
+<?php include("add_invoice_modal.php"); ?>
+
+<?php include("footer.php");
\ No newline at end of file
diff --git a/post.php b/post.php
index 39e34c43..0da380b7 100644
--- a/post.php
+++ b/post.php
@@ -228,6 +228,19 @@ if(isset($_POST['edit_transfer'])){
 
 }
 
+if(isset($_POST['add_invoice'])){
+
+    $client = intval($_POST['client']);
+    $date = strip_tags(mysqli_real_escape_string($mysqli,$_POST['date']));
+    
+    mysqli_query($mysqli,"INSERT INTO invoices SET invoice_date = '$date', client_id = $client, invoice_status = 'Draft'");
+
+    $_SESSION['alert_message'] = "Invoice added";
+    
+    header("Location: " . $_SERVER["HTTP_REFERER"]);
+
+}
+
 if(isset($_POST['add_user'])){
     $email = strip_tags(mysqli_real_escape_string($mysqli,$_POST['email']));
     $password = mysqli_real_escape_string($mysqli,$_POST['password']);