Annual Salary to Hourly Rate: How to Compare Job Offers Fairly

Why Headline Salary Figures Mislead

Most people compare job offers by looking at the annual gross salary and little else. But two salaries can look identical on paper while representing very different rates of compensation per hour actually worked. Holiday allowance, expected hours, commute time, and overtime culture all affect how much you genuinely earn for each unit of your time.

Converting your annual salary to an effective hourly rate gives you a single comparable number that levels the playing field between any two offers — or between employment and contracting.

The Basic Formula

The calculation starts simply:

Hourly rate = Annual salary ÷ Annual working hours

The complexity lies in calculating annual working hours accurately. A rough figure of 2,080 hours (52 weeks × 40 hours) is commonly used in the US, but it ignores the holidays, leave, and public holidays that reduce your actual working time.

How to Calculate Your Real Working Hours

A more accurate method:

1. Start with 52 weeks × your contracted weekly hours (e.g. 40 hours = 2,080 hours)
2. Subtract your annual leave (e.g. 25 days × 8 hours = 200 hours)
3. Subtract public holidays (e.g. 8 UK bank holidays × 8 hours = 64 hours)
4. The result is your actual working hours per year

Using this approach, a UK employee with 25 days leave and 8 bank holidays works approximately 1,816 hours per year, not 2,080. That difference of 264 hours is significant — it's equivalent to more than six standard working weeks.

The Holiday Allowance Effect: A Worked Example

Consider two job offers:

Offer A: £60,000 salary, 30 days annual leave, 8 bank holidays. Working hours: 52 × 40 − (38 × 8) = 1,776 hours. Effective hourly rate: £60,000 ÷ 1,776 = £33.78/hour.

Offer B: £55,000 salary, 20 days annual leave, 8 bank holidays. Working hours: 52 × 40 − (28 × 8) = 1,856 hours. Effective hourly rate: £55,000 ÷ 1,856 = £29.63/hour.

Offer A pays £5,000 more per year, but it also pays £4.15 more per hour actually worked. Both measures point the same way here — but that's not always the case. If Offer B had 30 days leave instead of 20, its hourly rate would rise to £30.96/hour, narrowing the gap considerably. The salary difference would then be buying you more leisure time as much as more money.

Overtime Expectations and Unpaid Hours

Many salaried roles come with an informal expectation of extra hours. A role advertised at 37.5 hours per week may routinely require 45 or 50 hours in practice. If you work 48 hours per week instead of 40, you are effectively working 20% more hours for the same annual pay — reducing your hourly rate by the same proportion.

Before accepting an offer, it's worth asking how many hours people actually work in the team, not just what's in the contract. A 10% higher salary means nothing if it comes with 20% longer hours.

Remote Work vs Office: Commute as Unpaid Time

A daily commute of one hour each way adds roughly 230 hours per year to the time you dedicate to a job — time that is unpaid. For a role paying £40,000, that hidden time cost is equivalent to reducing your effective hourly rate by around £8–9 per hour when calculated against total time committed. A remote role at £38,000 may well compensate you more effectively on a time-adjusted basis than an office role at £40,000 requiring a long commute.

Contracting Day Rates vs Employment Salary

Freelancers and contractors typically quote day rates rather than annual salaries. Converting between the two requires care. A contractor charging £400/day who works 220 days per year earns £88,000 gross — but has no employer pension contributions, no paid leave, must cover their own National Insurance as a sole trader, and faces periods without work between contracts. A like-for-like comparison needs to account for all of those missing benefits. As a rough rule, contractors typically need to charge 1.5× to 2× the equivalent employed day rate to match total compensation.

Putting It Together

When you next evaluate a job offer, take five minutes to calculate the effective hourly rate using actual working hours. Factor in commute time if the role requires office attendance. And if you're comparing employment to contracting, model the full cost of benefits you'd be giving up. The headline salary figure is a starting point — the hourly rate is the truth.