How to Calculate a Salary Increase Percentage

When you get a raise, the dollar figure is only half the story. A $3,000 bump means something very different on a $40,000 salary than on a $120,000 one. The way to compare any raise fairly — to last year, to a colleague, or to inflation — is to express it as a percentage. The good news is that the math is genuinely simple once you see it laid out.

Why it matters

Employers talk about pay in two different languages: percentages and flat dollar amounts. A percentage scales with your salary, so the same percent is worth more the more you earn. A fixed dollar raise is the opposite — it is a bigger boost, in percentage terms, for a smaller salary. Converting everything to a percentage puts every offer on the same footing.

The formula, in plain words

There are three relationships worth remembering:

• Increase = new salary − old salary
• Salary increase percentage = (increase ÷ old salary) × 100
• New salary = old salary × (1 + percentage ÷ 100)

The key detail people get wrong: you always divide by the old salary, not the new one. The percentage describes how much your pay grew from where it started.

A step-by-step example

Suppose you earned $60,000 and your new salary is $64,000.

1. Find the increase: 64,000 − 60,000 = $4,000.
2. Divide by the old salary: 4,000 ÷ 60,000 = 0.0667.
3. Multiply by 100: 0.0667 × 100 = 6.7%. That is your raise.
4. To sanity-check it, run it forward: 60,000 × 1.067 = $64,020 — within rounding of the new salary.

It works in reverse too. If you are offered a 4% raise on $60,000, multiply 60,000 × 0.04 = $2,400, so your new salary is $62,400. Same formula, used the other way around.

Turning it into per-paycheck money

A four-figure annual number can feel abstract. To see it per paycheck, divide the annual increase by your number of pay periods: 12 for monthly, 26 for two-weekly, or 52 for weekly. A $2,400 raise paid every two weeks is about $92 more per check before tax — a more concrete way to picture it.

Common mistakes to avoid

• Dividing by the new salary. The percentage is always relative to your old pay; using the new figure understates the raise.
• Comparing take-home to gross. Raises are quoted pre-tax. Your net increase is smaller because the extra income is taxed at your marginal rate.
• Forgetting inflation. A 3% raise in a year of 3% inflation leaves your buying power flat. To get ahead, the raise has to beat the cost of living.
• Rounding too early. Keep the decimals until the final step; rounding mid-calculation can throw the percentage off.

Try it yourself

Once the steps make sense, you rarely need to do them by hand. Enter your old and new salary — or a raise percentage — into the pay raise calculator and it will show the increase, the percentage, the new salary, and the per-paycheck figure instantly.