diff --git a/app/routes/routes.js b/app/routes/routes.js
index ef89a19..a30d5c8 100644
--- a/app/routes/routes.js
+++ b/app/routes/routes.js
@@ -17,6 +17,7 @@ const ConfigController = require("../controllers/config.controller");
 const dashboardController = require("../controllers/dashboard.controller");
 const notificationTemplateController = require("../controllers/notificationTemplate.controller");
 const quarterlyWindowsController = require("../controllers/quarterlyWindowsConfiguration.controller");
+const calculationController = require("../controllers/calculation.controller");
 const ManufacturingIpiController = require("../controllers/manufacturingIPI.controller")
 const fs = require("fs");
 const path = require("path");
@@ -25,6 +26,114 @@ const { UPLOAD_DIR } = require("../config/upload.config");
 
 const upload = multer({ dest: UPLOAD_DIR });
 
+
+
+/**
+ * @swagger
+ * /api/calculate_base_year:
+ *   post:
+ *     summary: Base year calculation 2022
+ *     tags: [IIP Calculation]
+ *     security:
+ *       - appSignature: []
+ *       - CSRF: []
+ *     requestBody:
+ *       required: true
+ *       content:
+ *         application/json:
+ *           schema:
+ *             type: object
+ *             required:
+ *               - baseYear
+ *               - forceRecalculate
+ *             properties:
+ *               baseYear:
+ *                 type: integer
+ *                 example: 2022
+ *               forceRecalculate:
+ *                 type: string
+ *                 example: false
+ *     responses:
+ *       200:
+ *         description: Base year production calculated successfully
+ */
+
+router.post("/calculate_base_year",[] , calculationController.calculate_base_year);
+
+/**
+ * @swagger
+ * /api/survey_auto_submit:
+ *   post:
+ *     summary: Auto survey submission for 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 survey completed successfully
+ */
+router.post("/survey_auto_submit",[] , calculationController.survey_auto_submit);
+
+/**
+ * @swagger
+ * /api/calculate_quarter:
+ *   post:
+ *     summary: Calculate IPI for a selected year and quarter (Quarter → Month mapping)
+ *     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
+ *                 description: |
+ *                   Quarter to month mapping:
+ *                   - Q1 → Jan to Mar (1 - 3)
+ *                   - Q2 → Apr to Jun (4 - 6)
+ *                   - Q3 → Jul to Sep (7 - 9)
+ *                   - Q4 → Oct to Dec (10 - 12)
+ *     responses:
+ *       200:
+ *         description: Quarterly IPI calculation completed successfully
+ */
+
+router.post("/calculate_quarter",[] , calculationController.calculate_quarter);
+
+
+router.get("/calculate_month",[] , calculationController.calculate_month);
+
  
 
 /**