📉
Why a £5k Pay Rise Doesn't Mean £5k More in Your Pocket
5 min read
You've got a job offer. The salary looks great. But before you hand in your notice, run through this checklist — because a £5,000 pay rise can easily evaporate once you account for everything you're losing from your current package.
1. Compare Net Pay, Not Gross
The only number that matters day-to-day is your take-home pay. A £40,000 salary offer might sound like a big jump from your current £35,000 — but after tax and NI, the difference is roughly £277 per month in extra take-home, not £417.
2. Pension Contribution Matching
Employer pension contributions are part of your total compensation. If your current employer matches 10% and the new one only offers 3%, that's a hidden pay cut of 7% on top of your salary — potentially worth thousands per year over a career. Always ask: "What is the total employer pension contribution?"
3. The Location Premium (or Penalty)
If the new role requires more commuting, the after-commute take-home is the real number to compare. A £5,000 pay rise that costs £2,400 in annual season ticket upgrades and an extra hour a day is probably not worth it.
4. Benefits-in-Kind
Private healthcare, life assurance, a company car, gym membership, and childcare vouchers all have a real cash value. Add up the market cost of any benefits your current employer provides that the new one doesn't, and subtract that from the headline salary difference.
5. Bonus Structure
A job paying £40,000 plus a 20% annual bonus target (£8,000) is potentially worth £48,000 — but only if the bonus is achievable and guaranteed. Ask what the actual average payout has been in the last 3 years. "Up to 20%" often means "typically 5%."
6. Holiday Entitlement
The UK statutory minimum is 28 days (including bank holidays). Every additional day of holiday is worth roughly your daily rate in wages. Going from 30 days to 25 days is a hidden pay cut of approximately 1.4% of your salary.
7. The Probationary Period
During probation (typically 3–6 months), many benefits don't apply and you can be dismissed without the standard notice period. If things go wrong during probation, you may have no redundancy rights. This risk has a real financial value — especially if your current role is secure.
Frequently Asked Questions
How much extra do I need to be worth moving for?
As a rough rule of thumb, financial advisers often suggest a minimum 15–20% increase in total compensation to justify the risk and disruption of changing jobs. For senior roles, the bar may be lower because of career progression opportunities.
Should I negotiate using my current net pay or gross?
Always negotiate on gross salary — that's the universal benchmark. But use our Salary Comparison Calculator to understand the net difference so you know your minimum acceptable number before entering negotiations.
Compare any two salaries side by side with our Salary Comparison Tool.