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How-to guide

How to Calculate Cost of Living Adjustment (COLA): Formula, Steps & Examples

Learn how to calculate Cost of Living Adjustment (COLA) — the formula explained step by step, with worked examples and a free calculator to check your answer.

By Aarav Mehta, CFA, MBA Finance · Updated Jun 2026 · 2 min read

Calculating your adjusted salary is straightforward once you know the Cost of Living Adjustment (COLA) formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Cost of Living Adjustment (COLA) Calculator.

What is Cost of Living Adjustment (COLA)?

The Cost of Living Adjustment (COLA) calculation tells you your adjusted salary from a few simple inputs. The figure you are solving for here is the adjusted salary, expressed in INR.

The Cost of Living Adjustment (COLA) formula

The core formula is:

Adjusted salary = Current salary or income × (1 + Cost of living increase ÷ 100)

Here is what each input means:

  • Current salary or income — a money amount. Example: ₹50,000.
  • Cost of living increase — a percentage, such as an annual rate. Example: 3%.

How to calculate it step by step

  • Write down the current salary or income (for example, ₹50,000).
  • Write down the cost of living increase (for example, 3%).
  • Apply the formula above to get your adjusted salary.
  • Double-check the result with the Cost of Living Adjustment (COLA) Calculator.

Worked examples

Example 1

Input / OutputValue
Current salary or income₹50,000
Cost of living increase3%
Adjusted salary₹51,500.00
Increase amount₹1,500.00

With current salary or income of ₹50,000 and cost of living increase of 3%, the adjusted salary works out to ₹51,500.00.

Example 2

With current salary or income of ₹1,00,000 and cost of living increase of 3%, the adjusted salary works out to ₹1,03,000.00.

ResultValue
Adjusted salary₹1,03,000.00
Increase amount₹3,000.00

Example 3

With current salary or income of ₹25,000 and cost of living increase of 3%, the adjusted salary works out to ₹25,750.00.

ResultValue
Adjusted salary₹25,750.00
Increase amount₹750.00

Tips for an accurate result

  • Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
  • Round only at the very end. Rounding inputs early can shift the final answer noticeably.
  • Re-run the numbers whenever an input changes, rather than estimating from an old result.
  • Annual rates must be converted to the period you are calculating for (for example, divide an annual rate by 12 for a monthly figure).

Prefer not to do the maths by hand? — the Cost of Living Adjustment (COLA) Calculator does it instantly, for free, with the formula and a worked example built in.

Continue exploring finance calculators with these tools: SIP Calculator, EMI Calculator, CAGR Calculator, FD Calculator, Effective Annual Rate (EAR) Calculator.

Calculators in this guide

Frequently asked questions

The formula is: Adjusted salary = Current salary or income × (1 + Cost of living increase ÷ 100). With current salary or income of ₹50,000 and cost of living increase of 3%, the adjusted salary works out to ₹51,500.00.

Gather each input, apply the formula step by step keeping your units consistent, and round only at the end. You can verify your answer instantly with the Cost of Living Adjustment (COLA) Calculator.

It uses the standard formula with exact arithmetic, so the result is correct for the inputs you enter. Bear in mind that real-world outcomes can still differ when underlying assumptions change.

The adjusted salary is expressed in INR. Make sure your inputs use matching units so the result is correct.

Aarav Mehta · CFA, MBA Finance

Aarav reviews every finance formula on CalcHub for accuracy.