Formula
| Term | Meaning |
|---|---|
| Salary before revision | Monthly gross or fixed salary of each employee in the cycle just before the increment, using the same pay element for everyone. |
| Salary after revision | The same pay element after the increment takes effect. |
| Simple average increment | Companion measure: Sum of individual increment percentages / Number of employees revised. |
Worked example
A Kolkata consulting firm revised the salaries of four employees in April 2026: Anil from ₹20,000 to ₹22,000 a month, Bina from ₹40,000 to ₹43,200, Chetan from ₹60,000 to ₹63,000 and Divya from ₹80,000 to ₹84,000.
- Individual increments: Anil 10%, Bina 8%, Chetan 5%, Divya 5%
- Simple average = (10 + 8 + 5 + 5) / 4 = 28 / 4 = 7%
- Total before = ₹20,000 + ₹40,000 + ₹60,000 + ₹80,000 = ₹2,00,000; total after = ₹22,000 + ₹43,200 + ₹63,000 + ₹84,000 = ₹2,12,200
- Weighted average = (₹2,12,200 minus ₹2,00,000) / ₹2,00,000 x 100 = ₹12,200 / ₹2,00,000 x 100 = 6.1%
Simple versus weighted average
The simple average treats every employee equally, so it answers questions about fairness: what did a typical employee receive? The weighted average treats every rupee equally, so it answers budget questions: how much more will the salary bill cost? The two differ whenever increment percentages vary with salary level. Report both, and never compare one company's simple average with another company's weighted average.
Reading increments across the organization
Break the average down by performance rating, grade, department and gender. A well-run cycle usually shows higher increments for higher ratings within each grade, and no unexplained gap between men and women with similar ratings. Compare each cycle with the previous one, and with inflation and revenue growth, rather than with increment figures quoted for other companies, which may use a different method or pay element.
- Average increment by rating band.
- Average increment by grade and department.
- Share of employees with no increment, and the reasons.
Pitfalls in increment data
Mixing pay elements distorts the result: compare monthly gross with monthly gross, or fixed pay with fixed pay, but never CTC before with gross after. Keep promotions out of the regular increment average or show them separately, because promotion raises are larger by design. Exclude people who joined during the cycle or were not eligible, and state the rule. Remember that a higher basic salary also raises PF and gratuity costs.
How to improve it
- Set the increment budget as a weighted percentage of payroll before managers propose numbers.
- Publish an increment guideline by rating and position in the pay range.
- Review proposed increments for gender and department gaps before approval.
- Keep promotion increases separate from annual increments in both budget and reports.
- Explain each employee's increment in a short conversation, not just a letter.
Tracking it in ZeniaHR
In ZeniaHR, salary revisions are recorded in each employee record alongside the lifecycle history, and the salary structure is set from monthly gross and split into Basic, DA, HRA and Special. Arrears for a revision backdated to an earlier month can be paid as a payroll input. There is no increment report, so take each salary before and after the revision from the employee records and calculate both averages.
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How do you calculate average salary increment?
For the weighted average, subtract total monthly salary before the revision from total salary after it, divide by the total before, and multiply by 100. For the simple average, add each employee's increment percentage and divide by the number of employees. Budgets use the weighted figure, while fairness reviews use the simple one.
Why is the weighted average increment lower than the simple average?
It is lower when employees on lower salaries received higher percentage increments. Their large percentages lift the simple average, but they add fewer rupees to the salary bill than smaller percentages on high salaries. If senior staff received the higher percentages instead, the weighted average would be the higher of the two.
Should promotions be included in the average increment?
Report them separately. Promotion raises are usually larger because they reflect a bigger role, and mixing them into the annual increment average makes the regular cycle look more generous than it was. Show the annual increment average, the promotion increase average and the combined effect on payroll as three separate lines.