Salary Increase Percentage Calculator

Two questions, one formula

People arrive at a salary increase calculator holding one of two things. Either they have an old figure and a new figure and want to know what percentage the jump represents, or they have been offered a percentage and want to know what lands in the bank. Both are the same equation, solved for a different unknown, which is why this tool answers both instead of making you pick a page.

The percentage is (new − old) ÷ old. Going from $50,000 to $55,000 gives 5,000 ÷ 50,000 = 0.10, a 10% increase. The other direction is old × (1 + percentage): $50,000 with a 10% raise becomes $55,000.

The one thing worth guarding is the denominator. It is always the old salary, because a percentage increase measures growth against where you started. Dividing the $5,000 gap by the new $55,000 gives 9.09%, which is the answer to a different question — what share of your new salary the raise represents — and it always looks smaller. If a number in a review conversation seems mysteriously low, this is usually why.

Subtracting inflation gives you the wrong number

Almost every calculator that mentions inflation at all handles it by subtraction: 10% raise minus 6% inflation equals a 4% real increase. It is intuitive, it is quick, and it is wrong.

Inflation does not take a slice off your salary. It divides what your salary buys. So the two effects multiply rather than add, and the real increase is:

(1 + raise) ÷ (1 + inflation) − 1

With a 10% raise and 6% inflation that is 1.10 ÷ 1.06 − 1 = 3.77%, not 4%. The gap is 0.23 percentage points — small enough to shrug at, large enough that your number will never reconcile with a correctly built one, and you will not know which to trust.

The error scales badly. At 40% inflation with a 45% raise, subtraction reports a 5% gain while the real figure is 1.45 ÷ 1.40 − 1 = 3.57%. Anyone who has lived through a high-inflation year knows the feeling of a raise that beat the index on paper and did not feel like anything; this is the arithmetic behind that feeling.

Here is the intuition. Suppose every price doubles and your salary doubles. Subtraction says 100% − 100% = 0%, and it happens to be right. Now suppose prices double and your salary rises 150%. Subtraction claims you gained 50%. But your salary is 2.5× and prices are 2×, so you can buy 2.5 ÷ 2 = 1.25× as much — a 25% gain, not 50%. Subtraction was only ever correct by accident, at the point where the numbers happen to cancel.

This calculator shows both figures side by side on purpose. Hiding the wrong one does not teach anyone anything; putting them next to each other, with the overstatement named, explains why your number and HR's spreadsheet disagree.

A raise below inflation is a pay cut

This is the single most useful thing the tool tells you, and the interface says it in words rather than only in colour.

A 3% raise in a year when prices rose 6% is a real change of 1.03 ÷ 1.06 − 1 = −2.83%. More money arrives, and it buys less than last year's money did. On a $60,000 salary, 3% is $61,800 while simply standing still would have required $63,600 — you are $1,800 a year behind, in a conversation everyone in the room is describing as a raise.

Nothing about that is unusual or dishonest. Budgets are finite and a below-inflation increase is often the honest maximum available. But it changes what you should ask for, and it changes whether "we gave you a raise" is an argument that should end the discussion. The tool prints the salary that merely holds your position, so you have a concrete floor rather than a feeling.

COLA, merit, market adjustment and promotion are different money

A single percentage can mean four different things, and they are not interchangeable in a negotiation.

The distinction matters because these get bundled. An offer of "6%" that turns out to be 3% COLA plus 3% merit in a year of 3.4% inflation is a real increase of about 2.5% and a performance reward of roughly nothing after inflation. Ask which component is which before deciding whether the number is good.

It matters even more with a promotion. Moving up a level while receiving the same percentage the whole team received means you took on a larger job for the cost of living. A promotion that does not clear the bottom of the new band is a title, not a raise.

Two 5% raises are not a 10% raise

Raises compound, because each one applies to a salary the previous one already lifted. Two consecutive 5% increases produce 10.25%: $1,000 becomes $1,050, then $1,102.50. Three of them give 15.76%, not 15%.

This works in your favour over time and against you when you reconstruct history. If you want to know your total growth over four years, do not add the four percentages — multiply the growth factors, or just put the first salary and the current one into the calculator and read the answer. And when comparing a multi-year offer against a single-step one, compare final salaries, never summed percentages.

The same trap catches inflation over several years. Three years of 5% inflation is a 15.76% rise in prices, so a salary that rose 15% across those three years lost ground, even though the two numbers look like a tie.

Hourly to annual needs your hours, not 2,080

Converting an hourly rate to a yearly salary is where quiet errors live. The standard shortcut multiplies by 2,080 — 40 hours a week times 52 weeks — and most tools apply it without telling you.

It breaks in two ordinary situations. If you work 20 hours a week, your annual figure is half what 2,080 produces: $25 an hour is $26,000, not $52,000. And if you are on a contract with no paid time off, you are likely paid for 48 or 50 weeks, not 52, so the 2,080 assumption overstates your year by 4% to 8%.

That is why weekly hours and weeks worked are visible inputs here rather than constants buried in the code. A percentage increase is unaffected by the conversion — 10% is 10% whether you express it hourly or annually — but the money difference per month and per year depends entirely on getting the annual figure right.

A 10% gross raise is not a 10% net raise

Every figure in this calculator is gross, and the percentage that reaches your bank account is smaller than the one you negotiated. This is not a flaw in the offer; it is how a progressive tax system works.

Your raise sits on top of everything you already earn, so it is taxed at your marginal rate — the rate on the last dollar — while your existing salary was taxed at a blend of every lower band. Payroll taxes stack on the same money. If roughly 30% of a $5,000 gross raise disappears to federal, state and payroll withholding, you keep about $3,500. Measured against take-home pay of $40,000, that is an 8.75% net raise from a 10% gross one.

One myth is worth killing while we are here: moving into a higher bracket never reduces your take-home pay. Only the income above the threshold is taxed at the higher rate. Turning down a raise to "stay in a lower bracket" costs money every time. What is true is that the net percentage lags the gross percentage, and it lags more the higher up you are — which is exactly why the gross number is the one to negotiate.

Taking this into a negotiation

Three numbers do most of the work. The salary that merely matches inflation is your floor — below it, the offer is a real cut regardless of what it is called. The real increase after inflation is what you actually gained. The money difference per year is what you will feel, and it is the figure worth naming out loud, because "1.5 points" is abstract while "$750 a year" is not.

Everything is computed in your browser. No salary you type is uploaded, logged or stored, which matters more here than on most tools: your pay is one of the few numbers you are genuinely not supposed to leak.