A 4% pay rise sounds like good news, and in isolation it is — you're earning more than you were. Whether you can actually buy more with it is a separate question, and it depends entirely on what prices did over the same period.
Nominal vs. real
The number on your payslip is the nominal increase — it's what changed in pounds and pence. The real increase is what's left after prices are accounted for. If pay rises 4% while prices rise 6%, the nominal number went up and the real number went down: you can afford less than you could before, even though your salary is higher.
Why this catches people out
Pay rises get announced and discussed in nominal terms almost everywhere — in the meeting, in the message from your manager, in the number itself. Inflation is quieter and less visible, so it's easy to celebrate the first number and never check it against the second.
A rise that's smaller than it looks
This isn't just a technicality in years when inflation runs high. A rise that would have been a clear real-terms gain in a low-inflation year can turn into a real-terms loss in a high-inflation one, on exactly the same percentage increase.
What to actually check
The comparison that matters is your pay rise percentage against the inflation rate over the same period, not against last year's headline figure from memory. Your country's statistics office publishes an up-to-date number — worth a quick check before deciding how good the rise actually is.
This article is general information, not personal financial advice. If you're making a real decision based on these numbers, it's worth talking to a qualified financial adviser who knows your full situation.
