Hourly Wage Tax Calculator

An hourly rate on its own does not tell you much about what a job is actually worth — the same £13 an hour means something quite different at 20 hours a week versus 40, and before tax and National Insurance are taken into account, it says nothing at all about take-home pay. This calculator converts your hourly rate into an annual salary and full take-home breakdown, using your actual hours and working weeks rather than a generic assumption.

Why 52 Weeks Is Rarely the Right Number

The simplest way to annualise an hourly rate is hours times weeks times 52, but 52 working weeks assumes no time off at all, which is rarely how anyone’s year actually works. Paid holiday entitlement means most employees work fewer than 52 weeks while still being paid for the full year, which this calculator handles correctly by default. Anyone on a genuinely variable schedule — term-time-only work, seasonal work, or unpaid leave taken during the year — should adjust the weeks figure to reflect actual weeks worked, since using 52 in that situation will overstate annual income and understate the true hourly value of the pay actually received.

This distinction matters more than it might first appear, since two people quoting the same hourly rate but working genuinely different numbers of paid weeks a year can end up with a meaningfully different actual annual income — the hourly rate alone does not capture that difference, which is exactly why this calculator asks for weeks worked directly rather than assuming a fixed 52 for everyone.

Checking Your Rate Against the Legal Minimum

The National Living Wage and National Minimum Wage set a legal floor that varies by age: £12.71 an hour for anyone 21 or over, £10.85 for ages 18 to 20, and £8.00 for those aged 16 to 17 and for apprentices. These are not guidelines — they are the legal minimum an employer must pay, and it is worth checking your own rate against the correct band for your age specifically, since a rate that looked compliant a year ago may have fallen behind after the annual uprating that typically happens each April.

Turning 21 partway through a pay period is worth being aware of specifically, since the applicable minimum rate changes at that point — an employer should adjust pay to the higher band from your 21st birthday onward, not simply continue the previous age band’s rate until a routine pay review.

Same Rate, Different Weeks

£13 an hour at 37.5 hours a week, worked across a full 52 weeks, produces a gross annual figure of roughly £25,350. The same £13 hourly rate worked across only 46 weeks — accounting for six weeks of genuinely unpaid time off, more common in some seasonal or casual roles — produces a noticeably lower gross annual figure of around £22,425, nearly £3,000 less for the exact same hourly rate. Neither figure is wrong; they simply reflect two genuinely different working patterns that a single hourly rate alone cannot distinguish between.

What Changes When Your Hours Aren’t Fixed

Many hourly-paid roles do not offer a consistent number of hours every single week, which makes annual income harder to predict from a single hourly figure alone. Using your typical or average weekly hours, rather than a best-case or contracted maximum, generally gives a more realistic picture of actual annual income for budgeting purposes. If overtime is a regular part of your income rather than an occasional extra, our Overtime Pay Calculator is built specifically to handle the different rate typically paid for those additional hours.

Averaging hours over several recent pay periods, rather than relying on a single unusually busy or quiet week, tends to give a more reliable typical figure to work from — a single week is rarely representative on its own, particularly in a role where hours genuinely fluctuate week to week.

Turning an Hourly Rate Into a Number You Can Compare

Converting an hourly rate to an annual salary is particularly useful when comparing two job offers presented in different formats — one hourly, one an annual salary — since comparing the two directly on their stated terms is not a fair comparison without converting them onto the same basis first. This calculator does exactly that conversion, then applies tax and National Insurance so the comparison is on a genuinely equivalent, like-for-like take-home basis rather than simply comparing gross figures. If you already have an annual salary figure to work from directly, our Take-Home Pay Calculator skips the hourly conversion step.

Frequently Asked Questions

Important Information

This calculator provides an estimate based on standard 2026/27 PAYE rates for general information purposes only and does not constitute tax advice. It assumes a standard tax code and consistent hours unless adjusted. For advice specific to your circumstances, consult HMRC or a qualified accountant. See our Disclaimer for further information.