diff --git a/callback/zinipay_return.php b/callback/zinipay_return.php
new file mode 100644
index 0000000..5bdc103
--- /dev/null
+++ b/callback/zinipay_return.php
@@ -0,0 +1,66 @@
+<?php
+$invoiceid = $_GET['invoiceid'] ?? $_REQUEST['invoiceId'] ?? null;
+
+if ($invoiceid) {
+    $settings = function_exists('getPaymentGateway') ? getPaymentGateway('zinipay') : [];
+    $apiKey = $settings['api_key'] ?? '';
+    $sandbox = ($settings['sandbox'] ?? '') == 'on';
+    $debug = ($settings['debug'] ?? '') == 'on';
+
+    $verifyEndpoint = $sandbox
+        ? "https://secure.zinipay.com/demo/payment/verify"
+        : "https://secure.zinipay.com/payment/verify";
+
+    $payload = json_encode(['metadata'=>['invoiceId'=>$invoiceid]]);
+
+    $ch = curl_init($verifyEndpoint);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($ch, CURLOPT_POST, true);
+    curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
+    curl_setopt($ch, CURLOPT_HTTPHEADER, [
+        'Content-Type: application/json',
+        'zini-api-key: ' . $apiKey,
+    ]);
+
+    $response = curl_exec($ch);
+    $error = curl_error($ch);
+    curl_close($ch);
+
+    zinipay_log("Return Page Verification", ['invoice'=>$invoiceid,'response'=>$response,'error'=>$error]);
+
+    if (!$error) {
+        $data = json_decode($response,true);
+        if (isset($data['status']) && $data['status'] === 'success') {
+            $transactionId = $data['transactionId'] ?? uniqid('zinipay_');
+            $amount = $data['amount'] ?? 0;
+
+            $recorded = false;
+            if (function_exists('addPayment')) {
+                @addPayment($invoiceid, $transactionId, $amount, 0, 'zinipay'); $recorded = true;
+            } elseif (function_exists('invoicePaymentAdd')) {
+                @invoicePaymentAdd($invoiceid, $transactionId, $amount, 0, 'zinipay'); $recorded = true;
+            }
+
+            if ($recorded) zinipay_log("Payment Verified & Recorded", ['invoice'=>$invoiceid,'transaction'=>$transactionId,'amount'=>$amount]);
+        }
+    }
+
+    if (defined('U')) {
+        header('Location: '.U.'client/iview/'.intval($invoiceid).'/'); exit;
+    } else {
+        $host = $_SERVER['HTTP_HOST'] ?? '';
+        $proto = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off') ? 'https://' : 'http://';
+        header('Location: '.$proto.$host.'/client/iview/'.intval($invoiceid).'/'); exit;
+    }
+}
+
+echo "<h2>Payment Completed</h2><p>If your invoice hasn't updated automatically, contact support.</p>";
+
+function zinipay_log($title, $data = []) {
+    $logDir = realpath(__DIR__ . '/../../storage/logs') ?: (__DIR__ . '/../../storage/logs');
+    if (!is_dir($logDir)) @mkdir($logDir, 0777, true);
+    $logFile = $logDir . '/gateway_zinipay.log';
+    $time = date("Y-m-d H:i:s");
+    $entry = "[$time] $title\n".print_r($data,true)."\n-------------------\n";
+    @file_put_contents($logFile, $entry, FILE_APPEND | LOCK_EX);
+}