diff --git a/report_tickets_unbilled.php b/report_tickets_unbilled.php
new file mode 100644
index 00000000..2e6e4840
--- /dev/null
+++ b/report_tickets_unbilled.php
@@ -0,0 +1,159 @@
+<?php
+
+require_once "inc_all_reports.php";
+
+validateTechRole();
+
+function secondsToTime($inputSeconds) {
+    $secondsInAMinute = 60;
+    $secondsInAnHour = 60 * $secondsInAMinute;
+    $secondsInADay = 24 * $secondsInAnHour;
+
+    // Extract days
+    $days = floor($inputSeconds / $secondsInADay);
+
+    // Extract hours
+    $hourSeconds = $inputSeconds % $secondsInADay;
+    $hours = floor($hourSeconds / $secondsInAnHour);
+
+    // Extract minutes
+    $minuteSeconds = $hourSeconds % $secondsInAnHour;
+    $minutes = floor($minuteSeconds / $secondsInAMinute);
+
+    // Extract the remaining seconds
+    $remainingSeconds = $minuteSeconds % $secondsInAMinute;
+    $seconds = ceil($remainingSeconds);
+
+    // Format and return
+    $timeParts = [];
+    $sections = [
+        'day' => (int)$days,
+        'hour' => (int)$hours,
+        'minute' => (int)$minutes,
+        'second' => (int)$seconds,
+    ];
+
+    foreach ($sections as $name => $value){
+        if ($value > 0){
+            $timeParts[] = $value. ' '.$name.($value == 1 ? '' : 's');
+        }
+    }
+
+    return implode(', ', $timeParts);
+}
+
+if (isset($_GET['year'])) {
+    $year = intval($_GET['year']);
+} else {
+    $year = date('Y');
+}
+
+$sql_ticket_years = mysqli_query($mysqli, "SELECT DISTINCT YEAR(ticket_created_at) AS ticket_year FROM tickets ORDER BY ticket_year DESC");
+
+$sql_clients = mysqli_query($mysqli, "SELECT client_id, client_name FROM clients ORDER BY client_name ASC");
+
+?>
+
+    <div class="card card-dark">
+        <div class="card-header py-2">
+            <h3 class="card-title mt-2"><i class="fas fa-fw fa-life-ring mr-2"></i>Tickets By Client</h3>
+            <div class="card-tools">
+                <button type="button" class="btn btn-primary d-print-none" onclick="window.print();"><i class="fas fa-fw fa-print mr-2"></i>Print</button>
+            </div>
+        </div>
+        <div class="card-body">
+            <form class="mb-3">
+                <select onchange="this.form.submit()" class="form-control" name="year">
+                    <?php
+                    while ($row = mysqli_fetch_array($sql_ticket_years)) {
+                        $ticket_year = intval($row['ticket_year']); ?>
+                        <option <?php if ($year == $ticket_year) { ?> selected <?php } ?> > <?php echo $ticket_year; ?></option>
+                    <?php } ?>
+                </select>
+            </form>
+
+            <div class="table-responsive-sm">
+                <table class="table table-striped">
+                    <thead>
+                    <tr>
+                        <th>Client</th>
+                        <th class="text-right">Tickets Raised</th>
+                        <th class="text-right">Billable Tickets</th>
+                        <th class="text-right">Unbilled Tickets</th>
+                        <th class="text-right">Invoice Tickets</th>
+                    </tr>
+                    </thead>
+                    <tbody>
+                    <?php
+                    while ($row = mysqli_fetch_array($sql_clients)) {
+                        $client_id = intval($row['client_id']);
+                        $client_name = nullable_htmlentities($row['client_name']);
+
+                        // Calculate total tickets raised in period
+                        $sql_ticket_raised_count = mysqli_query(
+                            $mysqli,
+                            "SELECT
+                                COUNT(ticket_id) AS ticket_raised_count
+                            FROM
+                                tickets
+                            WHERE
+                                YEAR(ticket_created_at) = $year
+                            AND
+                                ticket_client_id = $client_id"
+                        );
+                        $row = mysqli_fetch_array($sql_ticket_raised_count);
+                        $ticket_raised_count = intval($row['ticket_raised_count']);
+
+                        // Calculate total tickets raised in period that are closed and billable
+                        $sql_ticket_closed_count = mysqli_query(
+                            $mysqli,
+                            "SELECT
+                                COUNT(ticket_id) AS ticket_closed_count
+                            FROM
+                                tickets
+                            WHERE
+                                YEAR(ticket_created_at) = $year
+                            AND
+                                ticket_client_id = $client_id
+                            AND
+                                ticket_status = 'Closed'
+                            AND
+                                ticket_billable = 1
+                        ");
+                        $row = mysqli_fetch_array($sql_ticket_closed_count);
+                        $ticket_closed_count = intval($row['ticket_closed_count']);
+
+                        // Calculate total tickets raised in period that are closed and billable, but not invoiced
+                        $sql_ticket_unbilled_count = mysqli_query($mysqli, "SELECT COUNT(ticket_id) AS ticket_unbilled_count FROM tickets WHERE YEAR(ticket_created_at) = $year AND ticket_client_id = $client_id AND ticket_status = 'Closed' AND ticket_billable = 1 AND ticket_invoice_id IS NULL");
+                        $row = mysqli_fetch_array($sql_ticket_unbilled_count);
+                        $ticket_unbilled_count = intval($row['ticket_unbilled_count']);
+
+                        if ($ticket_raised_count > 0) {
+                            ?>
+
+                            <tr>
+                                <td><?php echo $client_name; ?></td>
+                                <td class="text-right"><?php echo $ticket_raised_count; ?></td>
+                                <td class="text-right"><?php echo $ticket_closed_count; ?></td>
+                                <td class="text-right"><?php echo $ticket_unbilled_count; ?></td>
+                                <td>
+                                    <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#AddTicketInvoiceModal<?php echo $client_id; ?>">
+                                        <i class="fas fa-fw fa-plus mr-2"></i>Invoice Ticket
+                                    </button>
+                                </td>
+
+
+                            </tr>
+                            <?php
+                        }
+                    }
+                    ?>
+                    </tbody>
+                </table>
+            </div>
+        </div>
+    </div>
+
+<?php
+require_once "footer.php";
+
diff --git a/reports_side_nav.php b/reports_side_nav.php
index 77363e97..61fec13b 100644
--- a/reports_side_nav.php
+++ b/reports_side_nav.php
@@ -92,6 +92,12 @@
                             <p>Tickets</p>
                         </a>
                     </li>
+                    <li class="nav-item">
+                        <a href="report_tickets_unbilled.php" class="nav-link <?php if (basename($_SERVER["PHP_SELF"]) == "report_tickets_unbilled.php") { echo "active"; } ?>">
+                            <i class="nav-icon fas fa-life-ring"></i>
+                            <p>Unbilled Tickets</p>
+                        </a>
+                    </li>
                     <li class="nav-item">
                         <a href="report_ticket_by_client.php" class="nav-link <?php if (basename($_SERVER["PHP_SELF"]) == "report_ticket_by_client.php") { echo "active"; } ?>">
                             <i class="nav-icon fas fa-life-ring"></i>