Your job pays you a certain amount per hour. But that number — the one on your contract or your payslip — is not what you're actually earning per hour of your life spent on the job.
The real number accounts for everything the job takes from you: all the time, and all the money you spend because you have this job. For most people in office roles, it's 20–35% lower than the headline figure. For people with long commutes or high work-related expenses, it's worse than that.
Here's how to calculate it. The process takes about 15 minutes.
The calculation starts with your net take-home income — what actually lands in your bank account — not your gross salary. The reason: gross-to-net can vary significantly depending on your tax band, pension contributions, student loan repayment, NI rate, and benefits choices.
For a £50,000 gross salary in the UK, take-home is typically in the range of £37,000–£39,000, depending on pension contributions and other deductions. That's your numerator. Annual net ÷ 12 gives you monthly. Annual net ÷ 52 gives you weekly.
This is where most people significantly undercount. Your contracted hours are the floor, not the ceiling.
Track everything the job actually takes from your day:
Track this for one week if you're uncertain. Most people are surprised by how much time the job actually takes.
The commute is usually the biggest single driver. A 90-minute round trip adds 7.5 hours to your weekly time cost. Over a 48-week working year, that's 360 additional hours. At a £50,000 salary with a 37.5-hour contracted week, that's roughly a 20% reduction in effective hourly rate from the commute alone, before anything else is counted.
Every pound you spend because of your job reduces your real effective hourly rate. Build a list:
For most people in city office roles in the UK, this comes to somewhere between £3,000 and £8,000 per year. Subtract this from your annual net income to get your real net income — what the job actually puts in your pocket once it's done taking money from you.
Contracted rate equivalent: £26.32/hour. The real rate is 49% lower.
A role that pays £10,000 more per year but adds 90 minutes of daily commuting might reduce your real hourly rate. The headline salary is better. The real rate might not be. You'd never know without running the calculation for both options.
Similarly: a lower salary in a role with no commute, full remote working, and fewer work-related expenses can have a higher real hourly rate than the "better-paying" job.
People transitioning from employment to freelancing often undercharge significantly because they anchor to their employment salary or contracted hourly equivalent. The correct rate is:
For most people converting from employment to freelancing, the correct rate is 1.5–2× their employment equivalent just to maintain the same real standard of living.
Your real hourly rate can decline even if your salary hasn't moved. If your commute has increased, if out-of-hours expectations have grown, if work-related spending has risen — these reduce your real rate independent of salary. A pay rise negotiation that frames this clearly ("my total cost of this role has increased by X") is more specific than a general request for more money.
You can improve your real hourly rate without changing your gross salary:
The variables change. Your commute changes. Your work-related spending changes. Your tax band changes. Your out-of-hours expectations change. None of these are visible in your gross salary figure, but all of them affect what the job actually pays you per hour of life.
A 15-minute annual review. One of the most productive hours you'll spend.
The people who run this calculation and update it annually tend to make different decisions — not necessarily bigger decisions, but more deliberate ones. They know what they're trading and they're choosing to trade it, rather than assuming the headline salary tells the whole story.