DA (Dearness Allowance) is usually calculated as a percentage of Basic Salary
Formula: DA = Basic Salary × DA Rate ÷ 100
Total Salary with DA = Basic Salary + DA
If DA is revised, use the updated percentage rate
Example: If Basic Salary is 20,000 and DA rate is 12%, DA = 20,000 × 12 ÷ 100 = 2,400
Example: Total Salary with DA = 20,000 + 2,400 = 22,400