Salary hikes, percentages and what a raise is really worth
How to work out a salary hike percentage and a new salary, why hikes compound, what inflation does to a raise, and how a CTC hike reaches take-home pay.
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In short
- Hike percentage = (new salary − old salary) ÷ old salary × 100; new salary = old salary × (1 + hike ÷ 100).
- Hikes compound: five years of 10% raise a salary by 61.05%, not 50%.
- The real hike divides by inflation rather than subtracting it: 10% in a year of 4% inflation is 5.77% more buying power.
- A cut takes a bigger hike to undo — a 10% cut needs 11.11% to recover.
- Take-home pay follows a CTC hike only until tax starts: on a ₹12 lakh CTC a 10% hike lifts it 10%, a 25% hike only 17.5%.
A salary hike is quoted as a percentage and paid in rupees, and most of the confusion around appraisals comes from moving between the two. The arithmetic is short; what it means over several years, after prices have risen, is where the interesting questions are.
The two calculations
The hike percentage compares the increase with the salary before it:
Hike % = (new salary − old salary) ÷ old salary × 100
A salary that goes from ₹8,00,000 to ₹9,20,000 has risen by ₹1,20,000, which is 15%.
Going the other way, the new salary is the old one multiplied by one plus the hike as a decimal:
New salary = old salary × (1 + hike ÷ 100)
A 10% hike on ₹8,00,000 gives ₹8,80,000 a year, or ₹73,333 a month.
The base matters. A hike is always a percentage of the salary before it, so ₹9,20,000 is 15% more than ₹8,00,000, but ₹8,00,000 is only 13.04% less than ₹9,20,000. The same rupee gap is a smaller percentage of the larger number.
Hikes compound
Each year's hike is applied to a salary that already includes the previous year's, so hikes build on each other the way interest does. Five years of 10% do not add up to 50%; they multiply to 1.10 raised to the fifth power, a rise of 61.05%.
Starting from ₹8,00,000:
| Hike every year | After 5 years | After 10 years |
|---|---|---|
| 8% a year | ₹11,75,462 | ₹17,27,140 |
| 10% a year | ₹12,88,408 | ₹20,74,994 |
| 12% a year | ₹14,09,873 | ₹24,84,679 |
Over ten years the difference between 8% and 12% a year is not four percentage points of pay; it is ₹7,57,539 a year, close to the whole starting salary. Small differences in the annual hike are worth arguing over precisely because they compound.
Percent against percentage points
When a hike falls from 12% one year to 9% the next, it has fallen by three percentage points, but by 25% in relative terms, because 3 is a quarter of 12. Both descriptions are correct and they sound very different, which is why pay announcements and news reports sometimes appear to contradict each other when they are describing the same numbers.
The rule is simple: a change in a percentage is measured in percentage points when you subtract, and in percent when you divide.
The real hike
A raise is only worth what it buys. When prices have risen over the same year, part of the hike is simply keeping up.
The accurate way to strip out inflation is to divide, not subtract:
Real hike = (1 + hike) ÷ (1 + inflation) − 1
A 10% hike in a year of 4% inflation raises buying power by 1.10 ÷ 1.04 − 1 = 5.77%. Subtracting would give 6%, close for small numbers and increasingly wrong as hikes and inflation grow.
| Hike | Real, at 4% inflation | Real, at 6% inflation |
|---|---|---|
| 5% | 0.96% | -0.94% |
| 8% | 3.85% | 1.89% |
| 10% | 5.77% | 3.77% |
| 15% | 10.58% | 8.49% |
The 4% column is the Reserve Bank of India's inflation target for consumer prices; actual inflation in any year can be above or below it, and the Consumer Price Index published by the Ministry of Statistics gives the measured figure. A hike below inflation is a pay cut in real terms, even when the salary figure goes up.
Recovering from a cut
Because percentages are taken from different bases, a cut and a hike of the same size do not cancel. A 10% cut on ₹8,00,000 leaves ₹7,20,000; a 10% hike on that gives ₹7,92,000, still short. Getting back to ₹8,00,000 needs a hike of 11.11%, and recovering from a 20% cut needs 25%.
This matters beyond salary cuts. A year with no hike followed by a year with a large one is not the same as two ordinary years, and a temporary reduction restored "in full" by a percentage of the reduced salary is not a full restoration.
A CTC hike and your take-home pay
Appraisal letters usually quote the hike on CTC, and CTC is not what arrives in the bank account. Employer PF and gratuity sit inside CTC and grow with basic pay, your own PF comes out of the salary, and income tax rises faster than income. Whether take-home pay keeps pace with the headline depends mostly on tax.
With basic at half of CTC, full PF and the new regime, take-home pay on a ₹12 lakh CTC is ₹85,396 a month. A 10% hike to ₹13.2 lakh raises it to ₹93,956, a rise of 10.02% — in step with the hike, because taxable income stays within the rebate that leaves income up to ₹12 lakh tax-free under the new regime. A 25% hike to ₹15 lakh raises it to ₹1,00,309, a rise of only 17.46%: taxable income crosses ₹12 lakh, the rebate falls away, and income tax of ₹77,835 a year appears.
The in-hand salary calculator works this out for any CTC and salary structure, and it is the more useful figure to compare against rent, EMIs and savings targets.
Compare like with like
The hike percentage is only meaningful when both salaries are measured the same way: CTC against CTC, gross against gross, take-home against take-home.
A move from ₹8 lakh to ₹9.2 lakh CTC is a 15% hike. On the same salary structure, take-home pay goes from ₹56,864 to ₹65,424 a month, a rise of 15.05%. Setting the old take-home pay against the new CTC divided by twelve, ₹76,667, suggests a rise of 34.82% — a figure that compares two different things and describes no one's pay. The same mistake runs the other way when an offer letter's CTC is set against a current payslip, and it makes every offer look better than it is.
Backdated hikes and arrears
Appraisals are often effective from 1 April but paid from a later month. A 10% hike on ₹8,00,000 adds ₹80,000 a year, or ₹6,667 a month. If the new salary starts in July, the first payslip also carries ₹20,000 of arrears for April, May and June.
Arrears for months of the same financial year are simply part of that year's salary, and the employer's tax deduction for the remaining months is worked out again to include them. Arrears that belong to an earlier year are taxed when received, and the income tax law provides relief so that bunching them into one year does not raise the tax on them.
A hike or a new job
Changing jobs is often the fastest way to a large rise, and comparing an offer with staying put is a compounding question rather than a single percentage.
From ₹8,00,000, staying with three annual hikes of 10% reaches ₹10.65 lakh in three years. Moving for a 30% rise and then receiving 8% hikes for two years reaches ₹12.13 lakh. At those rates, staying would not catch up until year 11. The up-front jump outweighs the smaller hikes that follow it for a long time, which is why the first year's figure deserves most of the negotiation.
The comparison should also include what does not appear in the salary: the variable part, whether gratuity eligibility restarts, notice-period costs and the difference in the work itself.
What this calculator assumes
- Salaries are annual figures, and the monthly figure is the annual one divided by twelve.
- The real hike divides by one plus inflation, using the inflation rate entered.
- The five-year projection repeats the same hike every year and discounts each year by the same inflation rate.
- The hike applies to the whole salary figure entered; take-home pay after PF and tax is in the in-hand salary calculator.