55p Mileage Allowance and VAT Registration: A 2026 Timing Guide for Drivers

The 55p mileage allowance does not change when you register for VAT. What changes is the calendar around it: your income tax year runs from 6 April, your VAT registration starts on a date HMRC (His Majesty's Revenue and Customs) sets, and the two clocks do not line up.

This 2026 update looks at timing only. If you drive for a ride-hailing app and your turnover is heading towards the £90,000 VAT threshold, you need to know which mileage records matter, which choices lock in, and which dates you must write down. We cover fuel VAT and scale charges elsewhere, so we link to those guides instead of repeating them.

Key takeaways

• Registering for VAT does not reset your 10,000-mile band. The 55p mileage allowance applies to the first 10,000 business miles in the tax year, whatever your VAT date.
• The method you use for a vehicle stays fixed while you keep that vehicle, so crossing the VAT threshold is not a chance to switch from 55p to actual costs.
• Your effective date of registration is the one date to log. Fuel VAT can only be claimed from that date, but income tax mileage runs across the whole tax year.
• Late registration means paying VAT on sales since the date you should have registered, and you may also face a penalty. Check GOV.UK for the current rules.

What is the 55p mileage allowance?

The 55p mileage allowance is HMRC's simplified flat rate for self-employed drivers using their own car or van. It is 55p a business mile for the first 10,000 miles in a tax year and 25p after that. It covers running costs and wear, so you claim miles instead of receipts.

According to GOV.UK's guidance on simplified expenses for vehicles, the 55p mileage allowance applies for 2026/27 and replaces 45p, backdated to 6 April 2026. The rate above 10,000 miles stays at 25p. Some commentary reports a different figure from April 2027, which we have not verified, so check GOV.UK before you plan beyond 5 April 2027.

For the full rules on the rate itself, who can use it and how it compares with actual costs, read our guide to the mileage allowance for VAT-registered drivers and our VAT FAQ on the mileage allowance. This article picks up where they stop: the weeks around registration.

What does nobody explain about mileage and the VAT threshold?

Most guides cover either the mileage rate or the VAT threshold, never the month where both collide. The gap is timing: which 55p mileage allowance rules carry on unchanged across your registration date, which ones lock, and which records you must start keeping from a specific day.

We read six UK pages on the 55p mileage allowance this week. They explain the rate, the 10,000-mile split and the log. None says what happens to your method choice or your records when you cross £90,000. That is the question drivers ask us in the month it happens.

When do you have to register for VAT as a driver?

You must register when your taxable turnover for the last 12 months goes over £90,000, or when you expect to pass £90,000 in the next 30 days. Under the rolling test you register within 30 days of the end of the month you went over. Check the current figure on GOV.UK.

According to GOV.UK's guidance on when to register for VAT, the effective date under the rolling 12-month test is the first day of the second month after you went over. GOV.UK gives an example: go over on 15 July, register by 30 August, and your effective date is 1 September. Under the 30-day test, your effective date is the day you realised you would pass the threshold.

Taxable turnover is what you sell that is not exempt or outside the scope of VAT. For a driver, check with an adviser or on GOV.UK exactly which receipts count, because app fares, tips and other income can be treated differently. Our guide to VAT registration for ride-hailing drivers walks through the application.

Does registering for VAT change which mileage method you can use?

No. Registering for VAT does not entitle you to switch from the 55p mileage allowance to actual costs. Your method is fixed for each vehicle. VAT registration alters how fuel VAT and other VAT-bearing costs are treated, but it is not a trigger to change the income tax method you started with.

According to HMRC's Business Income Manual at BIM75005, once a business uses the mileage rate for a vehicle, it must keep using it each year while that vehicle stays in the business. It can switch methods only when the vehicle is replaced. GOV.UK's vehicle page says the same in plainer words.

So think of your method as attached to the car, not to your tax status. Your VAT date is a date on the calendar. Your car is a fixed asset with a start date. They are separate.

What happens to your 10,000-mile band when you register?

Nothing happens to it. The 10,000-mile band belongs to the tax year, which starts on 6 April. Your VAT effective date might fall in October, January or any month, but the 55p mileage allowance still runs from 6 April until you reach 10,000, and 25p applies after that.

This is a common trap. A driver sees a new VAT quarter starting and assumes the mileage count restarts too. It does not. Count business miles from 6 April for income tax, and treat the VAT period as a separate wrapper for fuel VAT and your return.

If your accounting period does not match the tax year, GOV.UK's manual says to work out each period's vehicle deduction using the rates for the tax year in which the figures are calculated, then apportion profit. Ask your accountant if your accounts do not run April to April.

How do income tax and VAT timing differ?

Income tax counts by tax year from 6 April, with the 10,000-mile band inside it. VAT counts from your effective date of registration, in VAT return periods. The same trip can sit in different periods for each tax, so keep one log and tag each journey by both date and period.

According to GOV.UK's VAT record-keeping guidance, all VAT-registered businesses should now be signed up for Making Tax Digital for VAT. That means your VAT records will be digital from registration, so set up your mileage log in a format you can export. Our mileage log and bookkeeping guide shows what a clean log looks like.

Which records should you keep on the registration date?

Write down five things on the effective date: the date itself, your odometer reading, your business miles to date this tax year, your VAT scheme, and the vehicle's details. These five anchors let you split mileage cleanly later and defend the split if HMRC asks.

• The effective date of registration shown on your VAT certificate, and the date you applied.
• An odometer photo or reading on that date, plus the business miles claimed so far in the tax year.
• The vehicle's registration number and the date you bought it, with a note that you claim simplified mileage for it.
• Your VAT accounting scheme (standard or Flat Rate Scheme), because it changes how costs are shown.
• A short dated note of the month your rolling turnover crossed £90,000, so your registration deadline is provable.

Keep your mileage log contemporaneous, which means written at or near the time of each journey. According to BIM75005, a contemporaneous record of business mileage must be kept to support the claim. A rebuilt log made months later is the weak point in most mileage enquiries.

How do you handle registration month step by step?

Handle registration month in a fixed order: confirm the date, apply on time, freeze a mileage snapshot, set up VAT records from the effective date, and review your vehicle plan. The steps below take under an hour if your log is current.

1. Work out your rolling 12-month taxable turnover at the end of each month, and note the month you went over £90,000.
2. Calculate your deadline: 30 days after the end of that month. Apply on GOV.UK well before then.
3. Record the effective date HMRC gives you. Do not assume it matches the date you applied.
4. Photograph your odometer and total your business miles so far this tax year.
5. From the effective date, file fuel receipts and other VAT-bearing invoices for the VAT period. Costs before that date follow different rules, so check the pre-registration section of VAT Notice 700.
6. Keep claiming the 55p mileage allowance for the same vehicle through year-end. Do not switch methods.
7. Diarise your first VAT return date and any plan to replace the vehicle, which is the only point you can reset the method.

What about fuel and costs from before you registered?

Generally you cannot reclaim VAT on fuel you used before your effective date, because that fuel is already used up. VAT Notice 700 allows some pre-registration VAT on goods still held and on services received in a limited window. Check GOV.UK and your adviser before claiming anything from before registration.

According to VAT Notice 700 (section 11), goods can qualify if supplied no more than four years before registration and still held, and services can qualify if supplied no more than six months before. Goods used up before registration cannot be claimed. Notice 700 does not name fuel for private hire drivers or cars specifically, and rules on VAT on cars are separate, so treat this as a prompt to ask, not a rule to rely on.

None of this changes your 55p mileage allowance claim for income tax. The mileage rate is not an invoice, so the pre-registration rules never apply to it. They apply only to VAT on actual purchases.

How do you compare your options when the threshold approaches?

At the threshold you have three realistic mileage-related choices: keep the 55p method on your current car, replace the car and choose again, or stay under the threshold. The table compares what each does to your method, your records and your VAT position.

Voluntary registration is allowed under the threshold, according to GOV.UK. It is a separate decision with its own costs and benefits, so see our VAT threshold guide before you decide.

Illustrative example: a driver crossing the threshold

This illustrative example uses an invented driver and invented figures. Dara is a self-employed driver, not a real person, who bought a petrol hybrid on 9 June 2025 and has claimed simplified mileage on it since. Dara is not VAT-registered at the start of the timeline below.

Dara's deadline follows the same pattern as GOV.UK's example: crossing in August gives a 30 September deadline and a 1 October effective date. Dara cannot choose a different effective date to suit the mileage log, because HMRC sets it.

Now the income tax claim. Dara drives 9,400 business miles from 6 April to 30 September and 9,100 from 1 October to 5 April, 18,500 in total.

The first 10,000 miles earn 55p each, so £5,500. The remaining 8,500 earn 25p each, so £2,125. The total deduction is £7,625.

The registration date does not change that sum. The 10,000th mile falls 600 miles after registration, in October. Dara's first 9,400 miles earn £5,170, the next 600 earn £330, and the remaining 8,500 earn £2,125. The VAT effective date sits inside the band, but the band belongs to the tax year.

Dara considered switching to actual costs on registering. That was not available. The Business Income Manual ties the method to the vehicle, so only replacing the car opens that door. If Dara replaces the car in January 2027, the new vehicle starts a fresh choice, and the old car's final claim stays on the 55p mileage allowance. Dara would then check the VAT rules on buying a car before committing.

What are the common mistakes and penalties?

The costly mistakes are late registration, restarting the 10,000-mile count at the VAT date, switching method mid-vehicle and rebuilding logs after the event. Each can cost you tax, interest or penalties. Check GOV.UK for current penalty rates and take professional help if HMRC writes to you.

• Late registration: you must pay VAT on sales made since the date you should have registered, and you may face a penalty, according to GOV.UK.
• Restarting the band: claiming 55p on more than 10,000 miles in a tax year overstates your deduction and can trigger an inaccuracy penalty.
• Switching method mid-vehicle: moving from 55p to actual costs for the same car breaks the BIM75005 rule, so HMRC can disallow the claim.
• Claiming fuel VAT before the effective date: the VAT is not recoverable, so the claim can be removed with interest.
• Rebuilding the log later: a record made after the event is not contemporaneous, so the claim is weaker if HMRC asks.
• Missing a rolling-turnover check: drivers who test turnover only at tax-year end can miss the 30-day deadline.

Our guide to the 55p mileage allowance HMRC enquiry process covers what happens if HMRC queries a claim. For the 10,000-mile switch itself, see our bookkeeping steps for the 10,000-mile switch.

Key terms

• Effective date of registration: the date HMRC treats your VAT registration as starting, which can differ from the date you apply.
• Taxable turnover: what you sell that is not exempt or outside the scope of VAT.
• Simplified expenses: HMRC's flat rates for vehicles and some other costs, as an alternative to actual costs.
• Rolling 12-month test: the look-back test that compares the last 12 months of taxable turnover with the VAT threshold.
• Contemporaneous log: a record made at or near the time of each journey.
• Making Tax Digital for VAT (MTD): HMRC's rules requiring digital VAT records and returns through compatible software.

How UK Driver Accountants helps

We work only with ride-hailing, private hire, black cab and delivery drivers, on fixed fees from £20 a month, and we are independent of any ride-hailing app. Around registration we check your turnover test, your registration date, and your mileage log, so nothing slips between the two tax calendars.

Our VAT service handles the application, the first return and the choice of scheme alongside your Self Assessment. You can see what that costs on our pricing page, and test your mileage claim with the mileage calculator or your VAT position with the VAT calculator.

Conclusion

Remember three facts. The 55p mileage allowance runs on the tax year, your method belongs to the vehicle, and VAT starts on your effective date. Keep those three facts straight, log the dates that matter, and registering for VAT becomes an admin task rather than a risk to your mileage claim.

If you are close to £90,000 and want your registration date, mileage log and first VAT return checked by someone who knows drivers' accounts, contact us before the deadline, not after.

This article is general information and is not personal tax advice. Rates, thresholds and rules change, so check GOV.UK and speak to a qualified accountant before acting. If HMRC raises a dispute or penalty, professional representation is recommended.

Last reviewed 14 November 2026 by the UK Driver Accountants tax team