diff --git a/app/controllers/calculation.controller.js b/app/controllers/calculation.controller.js
index 157249a..b91e62c 100644
--- a/app/controllers/calculation.controller.js
+++ b/app/controllers/calculation.controller.js
@@ -233,34 +233,89 @@ exports.calculation_log = async (req, res) => {
 };
 
 
+const validateYearQuarter = (year, quarter) => {
+  if (!year || !quarter) {
+    return { ok: false, message: "Year and quarter are required" };
+  }
+  if (!["Q1", "Q2", "Q3", "Q4"].includes(quarter)) {
+    return {
+      ok: false,
+      message: "Invalid quarter. Accepted values: Q1, Q2, Q3, Q4",
+    };
+  }
+  return { ok: true };
+};
+
+async function runSurveyAutoSubmit(year, quarter) {
+  const autoSubmissionService = new SubmissionAutoFillService(dbConfig);
+  const autoFillMissingSubmissions =
+    await autoSubmissionService.autoFillMissingSubmissions(year, quarter);
+  const verifyCompleteness =
+    await autoSubmissionService.verifyCompleteness(year, quarter);
+
+  return { autoFillMissingSubmissions, verifyCompleteness };
+}
+
+async function runQuarterCalculation(year, quarter) {
+  const service = new IPICalculationService(dbConfig);
+  try {
+    const data = await service.runCompleteCalculation(year, quarter);
+    return { message: `IPI calculated for ${year} ${quarter}`, data };
+  } finally {
+    await service.close();
+  }
+}
+
 // 5. Survey Auto Submit
 exports.survey_auto_submit = async (req, res) => {
   try {
     const { year, quarter } = req.body;
+    const validation = validateYearQuarter(year, quarter);
+    if (!validation.ok) {
+      return res.status(400).json({ success: false, message: validation.message });
+    }
 
-    const autoSubmissionService = new SubmissionAutoFillService(dbConfig);
-    
-    // Auto-fill missing submissions for specific year and quarter
-    const result = await autoSubmissionService.autoFillMissingSubmissions(year, quarter);
-    
-    // Get report for specific quarter
-    // const result2 = await autoSubmissionService.getAutoFillReport(year, quarter);
-    
-    // Verify completeness for specific quarter
-    const result3 = await autoSubmissionService.verifyCompleteness(year, quarter);
-
-
-
-    res.json({ success: true, autoFillMissingSubmissions: result , verifyCompleteness: result3 });
-
-   
+    const result = await runSurveyAutoSubmit(year, quarter);
 
+    res.json({ success: true, ...result });
   } catch (error) {
-    console.error('Error:', error);
+    console.error("Error:", error);
     res.status(500).json({
       success: false,
-      message: '',
-      error: error.message
+      message: "Error during survey auto submit",
+      error: error.message,
+    });
+  }
+};
+
+// 6. Auto submit missing surveys, then run quarterly IPI calculation
+exports.survey_auto_submit_and_calculate = async (req, res) => {
+  try {
+    const { year, quarter } = req.body;
+    const validation = validateYearQuarter(year, quarter);
+    if (!validation.ok) {
+      return res.status(400).json({ success: false, message: validation.message });
+    }
+
+    const autoSubmitResult = await runSurveyAutoSubmit(year, quarter);
+    const calculationResult = await runQuarterCalculation(year, quarter);
+
+    res.json({
+      success: true,
+      message: `Auto submit and IPI calculation completed for ${year} ${quarter}`,
+      year,
+      quarter,
+      steps: {
+        survey_auto_submit: autoSubmitResult,
+        calculate_quarter: calculationResult,
+      },
+    });
+  } catch (error) {
+    console.error("Error:", error);
+    res.status(500).json({
+      success: false,
+      message: "Error during auto submit and quarterly calculation",
+      error: error.message,
     });
   }
 };
diff --git a/app/routes/routes.js b/app/routes/routes.js
index 9a054fa..8b7ec47 100644
--- a/app/routes/routes.js
+++ b/app/routes/routes.js
@@ -134,6 +134,49 @@ router.post("/survey_auto_submit",[] , calculationController.survey_auto_submit)
 
 router.post("/calculate_quarter",[] , calculationController.calculate_quarter);
 
+/**
+ * @swagger
+ * /api/survey_auto_submit_and_calculate:
+ *   post:
+ *     summary: Auto submit missing surveys, then calculate IPI for the quarter
+ *     description: |
+ *       Runs in sequence:
+ *       1. survey_auto_submit — auto-fill missing submissions and verify completeness
+ *       2. calculate_quarter — run IPI calculation for the same year and quarter
+ *     tags: [IIP Calculation]
+ *     security:
+ *       - appSignature: []
+ *       - CSRF: []
+ *     requestBody:
+ *       required: true
+ *       content:
+ *         application/json:
+ *           schema:
+ *             type: object
+ *             required:
+ *               - year
+ *               - quarter
+ *             properties:
+ *               year:
+ *                 type: integer
+ *                 example: 2025
+ *               quarter:
+ *                 type: string
+ *                 enum: [Q1, Q2, Q3, Q4]
+ *                 example: Q2
+ *     responses:
+ *       200:
+ *         description: Auto submit and quarterly calculation completed successfully
+ *       400:
+ *         description: Invalid year or quarter
+ *       500:
+ *         description: Server error
+ */
+router.post(
+  "/survey_auto_submit_and_calculate",
+  [],
+  calculationController.survey_auto_submit_and_calculate
+);
 
 router.get("/calculate_month",[] , calculationController.calculate_month);