diff --git a/docs/migrations/fix_GetProfileSalaryExecutive_calendar_arithmetic.sql b/docs/migrations/fix_GetProfileSalaryExecutive_calendar_arithmetic.sql
new file mode 100644
index 00000000..e3585c9f
--- /dev/null
+++ b/docs/migrations/fix_GetProfileSalaryExecutive_calendar_arithmetic.sql
@@ -0,0 +1,136 @@
+-- ====================================================================
+-- Fix GetProfileSalaryExecutive to use calendar arithmetic
+-- This changes the years/months/days calculation from fixed formulas
+-- to actual calendar arithmetic, matching calculateGovAge behavior
+-- ====================================================================
+
+DELIMITER $$
+
+DROP PROCEDURE IF EXISTS `GetProfileSalaryExecutive`$$
+
+CREATE DEFINER=`root`@`%` PROCEDURE `GetProfileSalaryExecutive`(
+    IN personId VARCHAR(36),
+    IN _date DATE
+)
+BEGIN
+WITH ordered AS (
+    SELECT * FROM profileSalary WHERE profileId = personId AND commandCode IN ('0','1','2','3','4','8','9','10','11','12','13','14','15','16','20')
+),
+work_session AS (
+    SELECT *,
+           COALESCE(
+               SUM(CASE WHEN commandCode IN (12,15,16) THEN 1 ELSE 0 END)
+               OVER (ORDER BY commandDateAffect, commandDateSign
+                    ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING),
+           0) AS sessionId
+    FROM ordered
+),
+session_end AS (
+    SELECT sessionId, MAX(commandDateAffect) AS sessionEndDate
+    FROM work_session
+    GROUP BY sessionId
+),
+executive_change AS (
+    SELECT *,
+           CASE
+               WHEN LAG(positionExecutive) OVER (ORDER BY commandDateAffect, commandDateSign) = positionExecutive
+                AND LAG(sessionId) OVER (ORDER BY commandDateAffect, commandDateSign) = sessionId
+               THEN 0
+               ELSE 1
+           END AS isNewExecutive
+    FROM work_session
+),
+executive_group AS (
+    SELECT *,
+           SUM(isNewExecutive) OVER (ORDER BY commandDateAffect, commandDateSign) AS execGroup
+    FROM executive_change
+),
+first_rows AS (
+    SELECT * FROM (
+        SELECT *,
+               ROW_NUMBER() OVER (PARTITION BY execGroup ORDER BY commandDateAffect, commandDateSign) AS rnExec
+        FROM executive_group
+    ) t WHERE rnExec = 1
+),
+rows_with_duration AS (
+    SELECT
+        fr.*,
+        LEAD(fr.sessionId)         OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign) AS nextSessionId,
+        CASE
+            WHEN LEAD(fr.commandDateAffect) OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign) IS NULL
+                THEN NULL
+            WHEN LEAD(fr.sessionId) OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign) <> fr.sessionId
+                THEN TIMESTAMPDIFF(DAY, fr.commandDateAffect, se.sessionEndDate) + 1
+            ELSE
+                TIMESTAMPDIFF(DAY, fr.commandDateAffect,
+                    LEAD(fr.commandDateAffect) OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign))
+        END AS duration_days
+    FROM first_rows fr
+    LEFT JOIN session_end se ON se.sessionId = fr.sessionId
+),
+resultWithDiff AS (
+    SELECT
+        *,
+        LAG(duration_days) OVER (ORDER BY commandDateAffect, commandDateSign) AS days_diff
+    FROM rows_with_duration
+)
+SELECT
+    r.commandDateAffect,
+    r.positionExecutive,
+    r.days_diff,
+    CASE
+        WHEN LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign) IS NOT NULL THEN
+            TIMESTAMPDIFF(YEAR, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect)
+        ELSE 0
+    END AS Years,
+    CASE
+        WHEN LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign) IS NOT NULL THEN
+            TIMESTAMPDIFF(MONTH, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect) % 12
+        ELSE 0
+    END AS Months,
+    CASE
+        WHEN LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign) IS NOT NULL THEN
+            TIMESTAMPDIFF(DAY,
+                DATE_ADD(
+                    DATE_ADD(LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign),
+                        INTERVAL TIMESTAMPDIFF(YEAR, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect) YEAR),
+                    INTERVAL TIMESTAMPDIFF(MONTH, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect) MONTH),
+                r.commandDateAffect) + 1
+        ELSE 0
+    END AS Days,
+    r.posNo,
+    r.positionType,
+    r.positionLevel,
+    r.positionCee,
+    r.orgRoot,
+    r.orgChild1,
+    r.orgChild2,
+    r.orgChild3,
+    r.orgChild4,
+    r.commandCode,
+    r.commandName,
+    r.commandNo,
+    r.commandYear,
+    r.remark
+FROM resultWithDiff r
+
+UNION ALL
+
+SELECT
+    _date, NULL,
+    TIMESTAMPDIFF(DAY, MAX(commandDateAffect), _date) + 1,
+    TIMESTAMPDIFF(YEAR, MAX(commandDateAffect), _date),
+    TIMESTAMPDIFF(MONTH, MAX(commandDateAffect), _date) % 12,
+    TIMESTAMPDIFF(DAY,
+        DATE_ADD(
+            DATE_ADD(MAX(commandDateAffect),
+                INTERVAL TIMESTAMPDIFF(YEAR, MAX(commandDateAffect), _date) YEAR),
+            INTERVAL TIMESTAMPDIFF(MONTH, MAX(commandDateAffect), _date) MONTH),
+        _date) + 1,
+    NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
+    NULL,NULL,NULL,NULL,NULL,NULL
+FROM resultWithDiff;
+
+END$$
+
+DELIMITER ;
diff --git a/docs/migrations/fix_GetProfileSalaryLevel_calendar_arithmetic.sql b/docs/migrations/fix_GetProfileSalaryLevel_calendar_arithmetic.sql
new file mode 100644
index 00000000..ca811a23
--- /dev/null
+++ b/docs/migrations/fix_GetProfileSalaryLevel_calendar_arithmetic.sql
@@ -0,0 +1,138 @@
+-- ====================================================================
+-- Fix GetProfileSalaryLevel to use calendar arithmetic
+-- This changes the years/months/days calculation from fixed formulas
+-- to actual calendar arithmetic, matching calculateGovAge behavior
+-- ====================================================================
+
+DELIMITER $$
+
+DROP PROCEDURE IF EXISTS `GetProfileSalaryLevel`$$
+
+CREATE DEFINER=`root`@`%` PROCEDURE `GetProfileSalaryLevel`(
+    IN personId VARCHAR(36),
+    IN _date DATE
+)
+BEGIN
+WITH ordered AS (
+    SELECT * FROM profileSalary WHERE profileId = personId AND commandCode IN ('0','1','2','3','4','8','9','10','11','12','13','14','15','16','20')
+),
+work_session AS (
+    SELECT *,
+           COALESCE(
+               SUM(CASE WHEN commandCode IN (12,15,16) THEN 1 ELSE 0 END)
+               OVER (ORDER BY commandDateAffect, commandDateSign
+                    ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING),
+           0) AS sessionId
+    FROM ordered
+),
+session_end AS (
+    SELECT sessionId, MAX(commandDateAffect) AS sessionEndDate
+    FROM work_session
+    GROUP BY sessionId
+),
+level_change AS (
+    SELECT *,
+           CASE
+               WHEN LAG(positionLevel) OVER (ORDER BY commandDateAffect, commandDateSign) = positionLevel
+                AND LAG(positionType) OVER (ORDER BY commandDateAffect, commandDateSign) = positionType
+                AND LAG(positionCee) OVER (ORDER BY commandDateAffect, commandDateSign) = positionCee
+                AND LAG(sessionId) OVER (ORDER BY commandDateAffect, commandDateSign) = sessionId
+               THEN 0
+               ELSE 1
+           END AS isNewLevel
+    FROM work_session
+),
+level_group AS (
+    SELECT *,
+           SUM(isNewLevel) OVER (ORDER BY commandDateAffect, commandDateSign) AS levelGroup
+    FROM level_change
+),
+first_rows AS (
+    SELECT * FROM (
+        SELECT *,
+               ROW_NUMBER() OVER (PARTITION BY levelGroup ORDER BY commandDateAffect, commandDateSign) AS rnLevel
+        FROM level_group
+    ) t WHERE rnLevel = 1
+),
+rows_with_duration AS (
+    SELECT
+        fr.*,
+        LEAD(fr.sessionId)         OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign) AS nextSessionId,
+        CASE
+            WHEN LEAD(fr.commandDateAffect) OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign) IS NULL
+                THEN NULL
+            WHEN LEAD(fr.sessionId) OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign) <> fr.sessionId
+                THEN TIMESTAMPDIFF(DAY, fr.commandDateAffect, se.sessionEndDate) + 1
+            ELSE
+                TIMESTAMPDIFF(DAY, fr.commandDateAffect,
+                    LEAD(fr.commandDateAffect) OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign))
+        END AS duration_days
+    FROM first_rows fr
+    LEFT JOIN session_end se ON se.sessionId = fr.sessionId
+),
+resultWithDiff AS (
+    SELECT
+        *,
+        LAG(duration_days) OVER (ORDER BY commandDateAffect, commandDateSign) AS days_diff
+    FROM rows_with_duration
+)
+SELECT
+    r.commandDateAffect,
+    r.positionType,
+    r.positionLevel,
+    r.positionCee,
+    r.days_diff,
+    CASE
+        WHEN LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign) IS NOT NULL THEN
+            TIMESTAMPDIFF(YEAR, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect)
+        ELSE 0
+    END AS Years,
+    CASE
+        WHEN LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign) IS NOT NULL THEN
+            TIMESTAMPDIFF(MONTH, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect) % 12
+        ELSE 0
+    END AS Months,
+    CASE
+        WHEN LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign) IS NOT NULL THEN
+            TIMESTAMPDIFF(DAY,
+                DATE_ADD(
+                    DATE_ADD(LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign),
+                        INTERVAL TIMESTAMPDIFF(YEAR, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect) YEAR),
+                    INTERVAL TIMESTAMPDIFF(MONTH, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect) MONTH),
+                r.commandDateAffect) + 1
+        ELSE 0
+    END AS Days,
+    r.posNo,
+    r.positionExecutive,
+    r.orgRoot,
+    r.orgChild1,
+    r.orgChild2,
+    r.orgChild3,
+    r.orgChild4,
+    r.commandCode,
+    r.commandName,
+    r.commandNo,
+    r.commandYear,
+    r.remark
+FROM resultWithDiff r
+
+UNION ALL
+
+SELECT
+    _date, NULL, NULL, NULL,
+    TIMESTAMPDIFF(DAY, MAX(commandDateAffect), _date) + 1,
+    TIMESTAMPDIFF(YEAR, MAX(commandDateAffect), _date),
+    TIMESTAMPDIFF(MONTH, MAX(commandDateAffect), _date) % 12,
+    TIMESTAMPDIFF(DAY,
+        DATE_ADD(
+            DATE_ADD(MAX(commandDateAffect),
+                INTERVAL TIMESTAMPDIFF(YEAR, MAX(commandDateAffect), _date) YEAR),
+            INTERVAL TIMESTAMPDIFF(MONTH, MAX(commandDateAffect), _date) MONTH),
+        _date) + 1,
+    NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
+    NULL,NULL,NULL,NULL
+FROM resultWithDiff;
+
+END$$
+
+DELIMITER ;
diff --git a/docs/migrations/fix_GetProfileSalaryPosition_calendar_arithmetic.sql b/docs/migrations/fix_GetProfileSalaryPosition_calendar_arithmetic.sql
new file mode 100644
index 00000000..a546ad97
--- /dev/null
+++ b/docs/migrations/fix_GetProfileSalaryPosition_calendar_arithmetic.sql
@@ -0,0 +1,144 @@
+-- ====================================================================
+-- Fix GetProfileSalaryPosition to use calendar arithmetic
+-- This changes the years/months/days calculation from fixed formulas
+-- to actual calendar arithmetic, matching calculateGovAge behavior
+-- ====================================================================
+
+DELIMITER $$
+
+DROP PROCEDURE IF EXISTS `GetProfileSalaryPosition`$$
+
+CREATE DEFINER=`root`@`%` PROCEDURE `GetProfileSalaryPosition`(
+    IN personId VARCHAR(36),
+    IN _date DATE
+)
+BEGIN
+WITH ordered AS (
+    SELECT * FROM profileSalary WHERE profileId = personId  AND commandCode IN ('0','1','2','3','4','8','9','10','11','12','13','14','15','16','20')
+),
+work_session AS (
+    SELECT *,
+           COALESCE(
+               SUM(CASE WHEN commandCode IN (12,15,16) THEN 1 ELSE 0 END)
+               OVER (ORDER BY commandDateAffect, commandDateSign
+                    ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING),
+           0) AS sessionId
+    FROM ordered
+),
+session_end AS (
+    SELECT sessionId, MAX(commandDateAffect) AS sessionEndDate
+    FROM work_session
+    GROUP BY sessionId
+),
+position_change AS (
+    SELECT *,
+           CASE
+               WHEN LAG(positionName) OVER (ORDER BY commandDateAffect, commandDateSign) = positionName
+                AND LAG(sessionId)    OVER (ORDER BY commandDateAffect, commandDateSign) = sessionId
+               THEN 0
+               ELSE 1
+           END AS isNewPosition
+    FROM work_session
+),
+position_group AS (
+    SELECT *,
+           SUM(isNewPosition) OVER (ORDER BY commandDateAffect, commandDateSign) AS posGroup
+    FROM position_change
+),
+first_rows AS (
+    SELECT * FROM (
+        SELECT *,
+               ROW_NUMBER() OVER (PARTITION BY posGroup ORDER BY commandDateAffect, commandDateSign) AS rnPos
+        FROM position_group
+    ) t WHERE rnPos = 1
+),
+rows_with_duration AS (
+    SELECT
+        fr.*,
+        LEAD(fr.sessionId)         OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign) AS nextSessionId,
+        CASE
+            WHEN LEAD(fr.commandDateAffect) OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign) IS NULL
+                THEN NULL
+            WHEN LEAD(fr.sessionId) OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign) <> fr.sessionId
+                THEN TIMESTAMPDIFF(DAY, fr.commandDateAffect, se.sessionEndDate) + 1
+            ELSE
+                TIMESTAMPDIFF(DAY, fr.commandDateAffect,
+                    LEAD(fr.commandDateAffect) OVER (ORDER BY fr.commandDateAffect, fr.commandDateSign))
+        END AS duration_days
+    FROM first_rows fr
+    LEFT JOIN session_end se ON se.sessionId = fr.sessionId
+),
+resultWithDiff AS (
+    SELECT
+        *,
+        LAG(duration_days) OVER (ORDER BY commandDateAffect, commandDateSign) AS days_diff
+    FROM rows_with_duration
+)
+-- ✅ NEW: Use calendar arithmetic for years/months/days calculation
+SELECT
+    r.commandDateAffect,
+    r.positionName,
+    r.positionCee,
+    r.days_diff,
+    CASE
+        WHEN LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign) IS NOT NULL THEN
+            TIMESTAMPDIFF(YEAR, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect)
+        ELSE 0
+    END AS Years,
+    CASE
+        WHEN LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign) IS NOT NULL THEN
+            TIMESTAMPDIFF(MONTH, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect) % 12
+        ELSE 0
+    END AS Months,
+    CASE
+        WHEN LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign) IS NOT NULL THEN
+            TIMESTAMPDIFF(DAY,
+                DATE_ADD(
+                    DATE_ADD(LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign),
+                        INTERVAL TIMESTAMPDIFF(YEAR, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect) YEAR),
+                    INTERVAL TIMESTAMPDIFF(MONTH, LAG(r.commandDateAffect) OVER (ORDER BY r.commandDateAffect, r.commandDateSign), r.commandDateAffect) MONTH),
+                r.commandDateAffect) + 1
+        ELSE 0
+    END AS Days,
+    r.posNo,
+    r.positionExecutive,
+    r.positionType,
+    r.positionLevel,
+    r.orgRoot,
+    r.orgChild1,
+    r.orgChild2,
+    r.orgChild3,
+    r.orgChild4,
+    r.commandCode,
+    r.commandName,
+    r.commandNo,
+    r.commandYear,
+    r.remark
+FROM resultWithDiff r
+
+UNION ALL
+
+-- ✅ NEW: Use calendar arithmetic for the final row too
+SELECT
+    _date, NULL, NULL,
+    TIMESTAMPDIFF(DAY, MAX(commandDateAffect), _date) + 1,
+    TIMESTAMPDIFF(YEAR, MAX(commandDateAffect), _date),
+    TIMESTAMPDIFF(MONTH, MAX(commandDateAffect), _date) % 12,
+    TIMESTAMPDIFF(DAY,
+        DATE_ADD(
+            DATE_ADD(MAX(commandDateAffect),
+                INTERVAL TIMESTAMPDIFF(YEAR, MAX(commandDateAffect), _date) YEAR),
+            INTERVAL TIMESTAMPDIFF(MONTH, MAX(commandDateAffect), _date) MONTH),
+        _date) + 1,
+    NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
+    NULL,NULL,NULL,NULL,NULL
+FROM resultWithDiff;
+
+END$$
+
+DELIMITER ;
+
+-- ====================================================================
+-- Verification query (optional)
+-- ====================================================================
+-- CALL GetProfileSalaryPosition('your-profile-id', '2024-06-14');
diff --git a/src/controllers/ProfileSalaryController.ts b/src/controllers/ProfileSalaryController.ts
index 814f5e89..277ac081 100644
--- a/src/controllers/ProfileSalaryController.ts
+++ b/src/controllers/ProfileSalaryController.ts
@@ -595,6 +595,10 @@ export class ProfileSalaryController extends Controller {
       _position.length > 1
         ? _position.slice(1).map((curr: any, index: number) => ({
             days: curr.days_diff ? Number(curr.days_diff) : 0,
+            // Use stored procedure's calculated values (calendar arithmetic)
+            year: curr.Years !== null && curr.Years !== undefined ? Math.floor(Number(curr.Years)) : 0,
+            month: curr.Months !== null && curr.Months !== undefined ? Math.floor(Number(curr.Months)) : 0,
+            day: curr.Days !== null && curr.Days !== undefined ? Math.floor(Number(curr.Days)) : 0,
             name: _position[index]?.positionName,
           }))
         : [];
@@ -605,15 +609,23 @@ export class ProfileSalaryController extends Controller {
 
         if (existing) {
           existing.days += curr.days;
+          existing.year += curr.year;
+          existing.month += curr.month;
+          existing.day += curr.day;
         } else {
-          existing = { name: curr.name, days: curr.days };
+          existing = { name: curr.name, days: curr.days, year: curr.year, month: curr.month, day: curr.day };
           acc.push(existing);
         }
 
-        const { year, month, day } = calculateTenure(existing.days);
-        existing.year = year;
-        existing.month = month;
-        existing.day = day;
+        // Normalize the summed values (convert excess days to months, months to years)
+        while (existing.day >= 30) {
+          existing.month += Math.floor(existing.day / 30);
+          existing.day = existing.day % 30;
+        }
+        while (existing.month >= 12) {
+          existing.year += Math.floor(existing.month / 12);
+          existing.month = existing.month % 12;
+        }
 
         return acc;
       },
@@ -628,6 +640,10 @@ export class ProfileSalaryController extends Controller {
       _posLevel.length > 1
         ? _posLevel.slice(1).map((curr: any, index: number) => ({
             days: curr.days_diff ? Number(curr.days_diff) : 0,
+            // Use stored procedure's calculated values (calendar arithmetic)
+            year: curr.Years !== null && curr.Years !== undefined ? Math.floor(Number(curr.Years)) : 0,
+            month: curr.Months !== null && curr.Months !== undefined ? Math.floor(Number(curr.Months)) : 0,
+            day: curr.Days !== null && curr.Days !== undefined ? Math.floor(Number(curr.Days)) : 0,
             name:
               !_posLevel[index]?.positionType && _posLevel[index]?.positionCee
                 ? `ระดับ ${_posLevel[index]?.positionCee.trim()}`
@@ -644,15 +660,23 @@ export class ProfileSalaryController extends Controller {
 
         if (existing) {
           existing.days += curr.days;
+          existing.year += curr.year;
+          existing.month += curr.month;
+          existing.day += curr.day;
         } else {
-          existing = { name: curr.name, days: curr.days };
+          existing = { name: curr.name, days: curr.days, year: curr.year, month: curr.month, day: curr.day };
           acc.push(existing);
         }
 
-        const { year, month, day } = calculateTenure(existing.days);
-        existing.year = year;
-        existing.month = month;
-        existing.day = day;
+        // Normalize the summed values (convert excess days to months, months to years)
+        while (existing.day >= 30) {
+          existing.month += Math.floor(existing.day / 30);
+          existing.day = existing.day % 30;
+        }
+        while (existing.month >= 12) {
+          existing.year += Math.floor(existing.month / 12);
+          existing.month = existing.month % 12;
+        }
 
         return acc;
       },
@@ -668,6 +692,10 @@ export class ProfileSalaryController extends Controller {
       _posExecutive.length > 1
         ? _posExecutive.slice(1).map((curr: any, index: number) => ({
             days: curr.days_diff ? Number(curr.days_diff) : 0,
+            // Use stored procedure's calculated values (calendar arithmetic)
+            year: curr.Years !== null && curr.Years !== undefined ? Math.floor(Number(curr.Years)) : 0,
+            month: curr.Months !== null && curr.Months !== undefined ? Math.floor(Number(curr.Months)) : 0,
+            day: curr.Days !== null && curr.Days !== undefined ? Math.floor(Number(curr.Days)) : 0,
             name: _posExecutive[index]?.positionExecutive,
           }))
         : [];
@@ -678,15 +706,23 @@ export class ProfileSalaryController extends Controller {
 
         if (existing) {
           existing.days += curr.days;
+          existing.year += curr.year;
+          existing.month += curr.month;
+          existing.day += curr.day;
         } else {
-          existing = { name: curr.name, days: curr.days };
+          existing = { name: curr.name, days: curr.days, year: curr.year, month: curr.month, day: curr.day };
           acc.push(existing);
         }
 
-        const { year, month, day } = calculateTenure(existing.days);
-        existing.year = year;
-        existing.month = month;
-        existing.day = day;
+        // Normalize the summed values (convert excess days to months, months to years)
+        while (existing.day >= 30) {
+          existing.month += Math.floor(existing.day / 30);
+          existing.day = existing.day % 30;
+        }
+        while (existing.month >= 12) {
+          existing.year += Math.floor(existing.month / 12);
+          existing.month = existing.month % 12;
+        }
 
         return acc;
       },
@@ -729,9 +765,10 @@ export class ProfileSalaryController extends Controller {
       _position.length > 1
         ? _position.slice(1).map((curr: any, index: number) => ({
             days: curr.days_diff ? Number(curr.days_diff) : 0,
-            // year: curr.Years ? Math.floor(Number(curr.Years)) : 0,
-            // month: curr.Months ? Math.floor(Number(curr.Months)) : 0,
-            // day: curr.Days ? Math.floor(Number(curr.Days)) : 0,
+            // Use stored procedure's calculated values (calendar arithmetic)
+            year: curr.Years !== null && curr.Years !== undefined ? Math.floor(Number(curr.Years)) : 0,
+            month: curr.Months !== null && curr.Months !== undefined ? Math.floor(Number(curr.Months)) : 0,
+            day: curr.Days !== null && curr.Days !== undefined ? Math.floor(Number(curr.Days)) : 0,
             name: _position[index]?.positionName,
           }))
         : [];
@@ -742,15 +779,23 @@ export class ProfileSalaryController extends Controller {
 
         if (existing) {
           existing.days += curr.days;
+          existing.year += curr.year;
+          existing.month += curr.month;
+          existing.day += curr.day;
         } else {
-          existing = { name: curr.name, days: curr.days };
+          existing = { name: curr.name, days: curr.days, year: curr.year, month: curr.month, day: curr.day };
           acc.push(existing);
         }
 
-        const { year, month, day } = calculateTenure(existing.days);
-        existing.year = year;
-        existing.month = month;
-        existing.day = day;
+        // Normalize the summed values (convert excess days to months, months to years)
+        while (existing.day >= 30) {
+          existing.month += Math.floor(existing.day / 30);
+          existing.day = existing.day % 30;
+        }
+        while (existing.month >= 12) {
+          existing.year += Math.floor(existing.month / 12);
+          existing.month = existing.month % 12;
+        }
 
         return acc;
       },
@@ -766,9 +811,10 @@ export class ProfileSalaryController extends Controller {
       _posLevel.length > 1
         ? _posLevel.slice(1).map((curr: any, index: number) => ({
             days: curr.days_diff ? Number(curr.days_diff) : 0,
-            // year: curr.Years ? Math.floor(Number(curr.Years)) : 0,
-            // month: curr.Months ? Math.floor(Number(curr.Months)) : 0,
-            // day: curr.Days ? Math.floor(Number(curr.Days)) : 0,
+            // Use stored procedure's calculated values (calendar arithmetic)
+            year: curr.Years !== null && curr.Years !== undefined ? Math.floor(Number(curr.Years)) : 0,
+            month: curr.Months !== null && curr.Months !== undefined ? Math.floor(Number(curr.Months)) : 0,
+            day: curr.Days !== null && curr.Days !== undefined ? Math.floor(Number(curr.Days)) : 0,
             name:
               !_posLevel[index]?.positionType && _posLevel[index]?.positionCee
                 ? `ระดับ ${_posLevel[index]?.positionCee.trim()}`
@@ -785,15 +831,23 @@ export class ProfileSalaryController extends Controller {
 
         if (existing) {
           existing.days += curr.days;
+          existing.year += curr.year;
+          existing.month += curr.month;
+          existing.day += curr.day;
         } else {
-          existing = { name: curr.name, days: curr.days };
+          existing = { name: curr.name, days: curr.days, year: curr.year, month: curr.month, day: curr.day };
           acc.push(existing);
         }
 
-        const { year, month, day } = calculateTenure(existing.days);
-        existing.year = year;
-        existing.month = month;
-        existing.day = day;
+        // Normalize the summed values (convert excess days to months, months to years)
+        while (existing.day >= 30) {
+          existing.month += Math.floor(existing.day / 30);
+          existing.day = existing.day % 30;
+        }
+        while (existing.month >= 12) {
+          existing.year += Math.floor(existing.month / 12);
+          existing.month = existing.month % 12;
+        }
 
         return acc;
       },
@@ -808,10 +862,11 @@ export class ProfileSalaryController extends Controller {
     const mapPosExecutive =
       _posExecutive.length > 1
         ? _posExecutive.slice(1).map((curr: any, index: number) => ({
-            // year: curr.Years ? Math.floor(Number(curr.Years)) : 0,
-            // month: curr.Months ? Math.floor(Number(curr.Months)) : 0,
-            // day: curr.Days ? Math.floor(Number(curr.Days)) : 0,
             days: curr.days_diff ? Number(curr.days_diff) : 0,
+            // Use stored procedure's calculated values (calendar arithmetic)
+            year: curr.Years !== null && curr.Years !== undefined ? Math.floor(Number(curr.Years)) : 0,
+            month: curr.Months !== null && curr.Months !== undefined ? Math.floor(Number(curr.Months)) : 0,
+            day: curr.Days !== null && curr.Days !== undefined ? Math.floor(Number(curr.Days)) : 0,
             name: _posExecutive[index]?.positionExecutive,
           }))
         : [];
@@ -822,15 +877,23 @@ export class ProfileSalaryController extends Controller {
 
         if (existing) {
           existing.days += curr.days;
+          existing.year += curr.year;
+          existing.month += curr.month;
+          existing.day += curr.day;
         } else {
-          existing = { name: curr.name, days: curr.days };
+          existing = { name: curr.name, days: curr.days, year: curr.year, month: curr.month, day: curr.day };
           acc.push(existing);
         }
 
-        const { year, month, day } = calculateTenure(existing.days);
-        existing.year = year;
-        existing.month = month;
-        existing.day = day;
+        // Normalize the summed values (convert excess days to months, months to years)
+        while (existing.day >= 30) {
+          existing.month += Math.floor(existing.day / 30);
+          existing.day = existing.day % 30;
+        }
+        while (existing.month >= 12) {
+          existing.year += Math.floor(existing.month / 12);
+          existing.month = existing.month % 12;
+        }
 
         return acc;
       },
diff --git a/src/utils/tenure.ts b/src/utils/tenure.ts
index 577d314b..dbdedbb3 100644
--- a/src/utils/tenure.ts
+++ b/src/utils/tenure.ts
@@ -1,23 +1,18 @@
 /**
  * คำนวณอายุงานจากจำนวนวันรวม
+ * ใช้สูตรเดียวกับ Stored Procedure GetProfileSalaryPosition
  * @param totalDays จำนวนวันรวม
  * @returns { year, month, day } ปี เดือน วัน
  */
 export function calculateTenure(totalDays: number) {
-  // 1. แปลงเป็น year เต็ม
+  // Match stored procedure formula:
+  // days_diff / 365.2524               AS Years
+  // (days_diff / 30.4375) % 12         AS Months
+  // days_diff % 30.4375                AS Days
+
   const year = Math.floor(totalDays / 365.2524);
-
-  // 2. วันที่เหลือหลังหัก year ออก
-  const remainAfterYear = totalDays - year * 365.2524;
-
-  // 3. แปลงเป็น month เต็ม
-  const month = Math.floor(remainAfterYear / 30.4375);
-
-  // 4. วันที่เหลือหลังหัก month ออก
-  const remainAfterMonth = remainAfterYear - month * 30.4375;
-
-  // 5. ปัดลง เฉพาะวัน
-  const day = Math.floor(remainAfterMonth);
+  const month = Math.floor((totalDays / 30.4375) % 12);
+  const day = Math.floor(totalDays % 30.4375);
 
   return { year, month, day };
 }