Salary Hike & Appraisal Analysis Guide
Formula for percentage hike, in-hand impact, inflation purchasing power, and tax bracket creep.
How is Salary Increment Calculated?
Salary increment represents the percentage or absolute increase in compensation over an existing base. The percentage hike formula is:
Nominal vs. Real (Inflation-Adjusted) Salary Growth
A 10% nominal salary hike does not equal a 10% increase in living standards if retail consumer inflation (CPI) is running at 6%. The real salary increase reflects your true increase in purchasing power and is calculated using the Fisher economic equation:
For example, a 15% salary hike in an economy with 6% inflation delivers a real purchasing power gain of 8.49%, rather than a naive 9%.
The Take-Home Slippage (Tax Drag)
When you receive a salary increment, the incremental amount is taxed at your highest marginal income tax rate (e.g., 20% or 30% plus cess). Additionally, statutory deductions such as EPF (12% of basic) scale upwards with your hike. Consequently, the actual increase in your bank account take-home pay is typically lower than your gross headline percentage hike.