The Common Myth: "A Raise Can Make Me Earn Less"
One of the most persistent financial myths is that getting a salary raise can push you into a "higher tax bracket," causing you to pay more tax and actually take home less money than before. This misconception prevents people from asking for raises or taking promotions.
We are going to demystify how progressive tax brackets work, and explain the mathematical reasons why a raise will always result in more net money in your pocket.
What is Progressive Taxation?
Most modern economies (including Italy, Germany, Spain, France, and the UK) use a progressive income tax system. Under this model, tax rates are not applied flatly to your entire income. Instead, your income is divided into segments or "brackets," and each bracket is taxed at its own specific rate.
As your income rises, only the money that spills over into the next bracket is taxed at the higher rate. The money in the lower brackets remains taxed at the lower rates.
A Step-by-Step Example (The UK System)
Let's look at the UK tax brackets for 2026 to see how this works in practice:
- Personal Allowance: Up to £12,570 is taxed at 0%.
- Basic Rate: Earnings between £12,570 and £50,270 are taxed at 20%.
- Higher Rate: Earnings between £50,270 and £125,140 are taxed at 40%.
If you earn £50,000, you fall into the Basic Rate bracket. But you do not pay 20% on the full £50,000. Here is how it is split:
- The first £12,570 is completely tax-free.
- The remaining £37,430 (£50,000 - £12,570) is taxed at 20%, which is £7,486.
- Your total income tax is £7,486. Your average tax rate is only 15%, not 20%!
What Happens If You Get a Raise Above £50,270?
Now, suppose you get a raise of £1,000, bringing your new gross salary to £51,000. You have officially entered the 40% Higher Rate tax bracket. Do you pay 40% on your full £51,000? Absolutely not!
Your tax is now split like this:
- First £12,570 is taxed at 0%.
- The next £37,700 (the full width of the basic rate band) is taxed at 20% = £7,540.
- Only the final £730 (the spillover above £50,270) is taxed at 40% = £292.
- Your total tax is £7,832.
Your net salary goes from £42,514 to £43,168. Your raise earned you an extra £654. Your marginal tax rate on that raise was 40%, but your average tax rate is still just 15.3%. You are significantly wealthier than you were before the raise.
Marginal vs. Effective Tax Rates
To understand taxes, you must know the difference between these two metrics:
- Marginal Tax Rate: The tax rate applied to the next euro, pound, or dirham you earn. If you are in the 40% bracket, your marginal rate is 40%.
- Effective Tax Rate: The actual percentage of your total income paid in taxes. This is computed as
Total Tax Paid / Gross Income. Because of personal allowances and lower brackets, your effective tax rate is always lower than your marginal rate.
Conclusion
Never decline a raise due to tax concerns. While higher brackets take a larger bite of your incremental earnings, they will never reduce your overall net salary. To see exactly how progressive taxes impact your income in different countries, use our Paylio Salary Tax Calculators.