Prison Officer Commuting Costs 2026/27: What It Really Costs

In shortMost prisons are away from town centres, so driving is the default and the commute is best treated as a deduction from take-home pay.

Most prisons are built away from town centres and many shift patterns start or finish at times when public transport is thin. That makes driving the default for many officers, and long drives are common when someone cannot afford to live near a particular establishment.

The sensible way to think about commuting is as a deduction from take-home pay. The free commute cost calculator on this site does the sums, and the rest of this guide explains the maths so you can check it against your own receipts.

What the calculator takes

You enter miles, minutes, shifts per week and weeks per year, and choose car, public transport or cycling.

What it returns

Cost per shift, per month and per year, plus your effective hourly pay after unpaid travel time.

• The cost is not just fuel: your car's wear, insurance, servicing and depreciation all rise with mileage.
• Long journeys after night shifts carry a safety cost that a spreadsheet does not capture.
• This guide concentrates on the money, but treat fatigue and safety as part of your own decision.

In shortYou cannot claim tax relief for travelling to and from your own prison, however far it is; the mileage rates are for business travel only.

GOV.UK's guidance on tax relief for job expenses says the claim for vehicles does not include travelling to and from your work, unless it is a temporary place of work. The guidance on travel and overnight expenses repeats it.

HMRC's approved mileage rates (cars and goods vehicles) are 55p a mile for the first 10,000 business miles and 25p thereafter for the 2026/27 tax year, which began on 6 April 2026.

Before 6 April 2026 the first-10,000-mile rate was 45p; the 25p rate beyond 10,000 miles, 24p for motorcycles and 20p for bicycles did not change.

In shortOn our stated assumptions a 14-mile each-way car commute costs about £1,141 a year and a 25-mile one about £2,037; they are illustrations, not averages.

• Example A: 14 miles each way£1,141£95 a month, £6.20 a shift
• Example B: 25 miles each way£2,0379,200 miles a year
• Example C: car share (A)About £570Each, with one colleague
• Per-mile cost usedAbout 22.1pFuel 14.1p plus 8p other running costs

The examples use the same assumptions as the commute calculator's default: 4 shifts a week for 46 weeks (184 shifts a year) and a petrol car doing 45 miles to the gallon.

Fuel at 140p a litre costs about 14.1p a mile (140p times 4.546 litres in a gallon divided by 45) and we add 8p a mile for other running costs such as tyres and servicing.

Those fuel and running figures are our own assumptions; replace them with your own.

In shortUnpaid travel time lowers what you earn per hour on the job, from about £16.09 a contracted hour to about £13.91 in Example A.

• Take-home per contracted hourAbout £16.09£27,382 over 1,702 hours (pay point 1, 37h)
• After Example AAbout £13.91Commute cost deducted, 184 unpaid hours added
• After Example BAbout £12.8125 miles each way

Take a National Band 3 officer at pay point 1 on 37 hours with modelled take-home of about £27,382 a year. Over 46 working weeks, 37 contracted hours a week is 1,702 hours, so take-home per contracted hour is about £16.09.

Now deduct Example A's £1,141 commute cost and add 184 unpaid travel hours: (£27,382 minus £1,141) divided by (1,702 plus 184) is about £13.91 per hour. For Example B the figure falls to about £12.81 an hour.

• This is not a claim that you should quit or move; it is a way to compare options.
• A pay rise of 11% to 17% from moving to a London pay zone might look attractive until it is set against a longer commute or higher housing cost.
• An officer deciding between two establishments should compare take-home after commuting cost and time, rather than gross pay.
• The calculator uses exactly this method, and you can enter the same journey twice with different assumptions to compare.

In shortThe one claim that fits is HMRC's £80 a year flat rate for uniformed prison officers, worth £16 at 20% tax, if you launder the uniform yourself and your employer does not pay.

• Flat rate expense£80 a year'Uniformed prison officers', EIM32712
• Saving at 20%£16 a year£32 at 40%
• Years you can claimCurrent plus 4Previous tax years

HMRC's table of agreed flat rate expenses (EIM32712, opened 3 October 2026, page last updated 13 February 2023) includes an entry for Prisons: 'Uniformed prison officers' at £80 a year.

A flat rate expense is an amount HMRC has agreed represents a reasonable average cost of cleaning or repairing a uniform you wear for work, so that you do not need receipts.

The tax relief is your marginal rate times £80: £16 a year at 20% and £32 at 40%. GOV.UK says you can claim for the current tax year and the 4 previous tax years, and that you can claim as 'Uniform, work clothing and tools' without sending evidence for a flat rate.

In shortHMPPS lists a cycle to work scheme and season ticket loans, but we did not verify their terms; car shares and rota swaps also cut cost.

HMPPS's published staff benefits page (read 3 October 2026) lists a cycle to work scheme and season ticket loans among the benefits. We did not verify the terms of either, such as the amounts, repayment rules or which tax treatment applies, so check them with your HR or the scheme provider before relying on them.

They can be useful if your route suits a train or a bike, and a season ticket loan can spread an annual ticket cost across the year.

• A car share cuts the fuel part of a shared journey by the number of people sharing.
• Swapping shifts or rota days, where your establishment allows it, can put more journeys in daylight or on public transport.
• If your employer offers home-to-work travel support for specific sites, it will be in the job advert or offer letter for that role; we cannot verify a general entitlement.

In shortThe main errors are treating the mileage rate as an entitlement, costing only fuel, forgetting the cost comes from taxed income, and ignoring fatigue.

At a basic-rate tax and National Insurance rate of 28% combined, £1,141 of net cost is the equivalent of about £1,585 of gross pay. That is a better measure of what the commute takes from your earnings than the net cost alone.

In shortCommuting costs creep up unnoticed, so review them each April, or when your shift pattern, workplace or vehicle changes.

Do it after the April pay change, when your take-home pay is updated. The aim is to know your monthly figure, to see whether a cheaper or shorter option exists, and to check that nothing claimable has been missed.

1. Write down your one-way miles and typical minutes each way for the routes you actually drive.
2. Count shifts per week and weeks per year, allowing for leave (our annual leave calculator can help).
3. Enter them into the commute cost calculator and note cost per month and effective hourly pay.
4. Price one alternative: a car share, a monthly season ticket or a cycle route, and compare.
5. Check whether your employer has paid or reimbursed any travel that you might otherwise claim for.
6. Check your uniform laundry position against the £80 flat rate and claim if it applies.
7. Diarise the review for next April.