Salary Calculation for January 2025
Calculation Breakdown
- Calculate Annual Working Days
The total number of working days in a year is calculated as:
Annual Working Days = Total Days in a Year – Annual Leave Days
Substituting the values:
365 – 111 = 254 days （→Public Holidays in 2025） - Determine Monthly Average Working Days
To find the monthly average working days:
Monthly Average Working Days = Annual Working Days ÷ 12
Substituting the values:
254 ÷ 12 = 21.17 days/month (rounded to two decimal places) - Count Actual Working Days in January 2025
The employee started on January 10, 2025. Excluding weekends (Saturdays and Sundays) and public holidays, the working days are as follows:- Working days: January 10, 13, 14, 15, 16, 17, 20, 21, 22, 23, 24, 27, 28, 29, 30, 31
- Total Working Days in January: 16 days
- Calculate the Salary for January
The monthly salary is divided by the monthly average working days to determine the daily rate. This rate is then multiplied by the actual working days in January:
Daily Rate = Monthly Salary ÷ Monthly Average Working Days
Daily Rate = 11,000 ÷ 21.17 ≈ 519.5 Baht/day (rounded to one decimal place)
Salary for January = Daily Rate × Working Days in January
519.5 × 16 = 8,315 Baht
Fairness Explanation
This calculation method is based on the monthly average working days. Using the average ensures that the daily rate remains consistent across all months, regardless of the actual working days in any specific month.
For example:
- In months with more working days, employees do not receive a reduced daily rate.
- In months with fewer working days, employees do not receive an inflated daily rate.
This approach ensures fairness for both the employer and the employee, as the monthly salary reflects an equitable distribution of pay over the year, without fluctuations in daily rates due to varying working days in different months.
Public Holidays in 2025
Thailand Public Holidays 2025
January 1 (Wed): New Year’s Day
February 12 (Wed): Makha Bucha Day
April 6 (Sun): Chakri Memorial Day
April 7 (Mon): Substitute Holiday
April 13 (Sun): Songkran Festival (Thai New Year)
April 14 (Mon): Songkran Festival (Day 2)
April 15 (Tue): Songkran Festival (Day 3)
April 16 (Wed): Substitute Holiday
May 1 (Thu): Labor Day
May 4 (Sun): Coronation Day
May 5 (Mon): Substitute Holiday
May 11 (Sun): Visakha Bucha Day
May 12 (Mon): Substitute Holiday
June 3 (Tue): Her Majesty Queen Suthida’s Birthday
July 10 (Thu): Asahna Bucha Day
July 11 (Fri): Khao Phansa Day
July 28 (Mon): King Maha Vajiralongkorn’s Birthday
August 12 (Tue): Her Majesty Queen Sirikit’s Birthday (Mother’s Day)
October 13 (Mon): King Bhumibol Memorial Day
October 23 (Thu): King Chulalongkorn Memorial Day
December 5 (Fri): Father’s Day (King Bhumibol’s Birthday)
December 10 (Wed): Constitution Day
December 31 (Wed): New Year’s Eve
