Fuel cards remove the receipt admin and make VAT reclaim easier. Expense tracking keeps the AMAP route open and works for one-van trades. Here is which one fits which fleet, what HMRC actually accepts, and the trap of running both badly.
Key Takeaways
- HMRC's Approved Mileage Allowance Payments (AMAP) rate sits at 45p per mile for the first 10,000 business miles in a car or van and 25p after that, for the 2026 to 2027 tax year. The rate has been frozen since 2011.
- HMRC Advisory Fuel Rates from 1 March 2026 are typically 12p per mile for petrol cars up to 1,400 cc, 12p for diesel up to 1,600 cc, and 7p per mile for home-charged electric. These rates set the reimbursement floor for fuel used on business in a company vehicle.
- A fuel card consolidates fuel purchases on one monthly invoice with a full VAT breakdown, which removes individual receipts and simplifies VAT reclaim for VAT-registered fleets.
- Expense tracking with HMRC-compliant receipt evidence keeps the door open to AMAP claims, fits sole traders using their own van, and is the only practical option below two or three drivers.
- Running fuel cards and personal-mileage claims at the same time without clear policy is the most common payroll-and-VAT mess HMRC finds at a small-fleet inspection.
If you run a small UK fleet, the question is rarely "should we track fuel". The question is whether to buy fuel on a card and reconcile a single invoice each month, or pay drivers a mileage rate and keep receipts for the rest. The choice changes how VAT is recovered, how fuel is paid for, and what each driver has to do at the petrol station forecourt.
This guide is for fleet owners with one to twenty vans, sole traders running a single working van, and any small business deciding whether the fuel card sales pitch in their inbox is worth the monthly fee. It compares the two routes against the actual HMRC rules in 2026, the operational cost in admin time, and the audit risk of getting the system wrong.
For the wider expense picture, the 14 vehicle expense categories every UK fleet should track sits alongside this piece. Fuel is one category of fourteen, and it gets the most airtime because it is the largest variable cost in most small fleets.
What HMRC actually expects from fuel records in 2026
Before any tool is chosen, the rules need to be clear. HMRC has two reimbursement frameworks for business motoring in 2026, and they apply to different ownership models.
AMAP, Approved Mileage Allowance Payments. This is the route for an employee or sole trader using their own vehicle for work. HMRC's rate for the 2026 to 2027 tax year is 45p per mile for the first 10,000 business miles and 25p per mile after that, for cars and vans. An additional 5p per mile per passenger is allowed where the passenger is travelling on the same business journey. Payments at or below the AMAP rate are tax-free and National-Insurance-free; payments above the rate are taxable on the difference. The rates have been frozen since 2011, which means the cost-per-mile gap between AMAP and reality has widened every year as fuel prices have moved.
AFR, Advisory Fuel Rates. This is the route for fuel used on business in a company-provided car. From 1 March 2026 the petrol rates are typically 12p per mile up to 1,400 cc, 14p between 1,401 cc and 2,000 cc, and 22p above 2,000 cc. Diesel rates are 12p up to 1,600 cc, 13p between 1,601 cc and 2,000 cc, and 18p above 2,000 cc. Electric rates are 7p per mile for home charging and 15p per mile for public charging from March 2026. Employers either reimburse business fuel at AFR, or charge employees AFR for private fuel use to avoid the fuel benefit charge.
The two frameworks do not overlap cleanly. A company van used only for business is a simpler case than a personally-owned car used for the occasional client visit. The choice of fuel card or expense tracking has to fit the framework that actually applies to each driver.
What a fuel card does, and where the savings come from
A fuel card is a closed-loop charge card issued to a driver, accepted at named filling stations across the UK. The driver pays at the pump with the card, the network bills the operator monthly, and the operator settles with the network. There is no driver expense claim, no receipt to lose, and no week-end float to balance.
The savings come from four places: reduced administration, VAT-reclaim simplification, network discounts, and visibility.
Administration. A small fleet with five drivers each fuelling twice a week generates around 40 fuel receipts a month. With a card, those become one consolidated monthly invoice. The hour or two a week of receipt-chasing turns into a single reconciliation against the card statement.
VAT reclaim. For a VAT-registered business, the consolidated card invoice is an HMRC-acceptable VAT invoice for the whole month's fuel, with the VAT broken out per transaction. The operator does not have to retain individual paper receipts. For a fleet on the standard VAT scheme reclaiming fuel, this is the difference between defendable records and a shoebox of fading thermal slips.
Network discounts. Headline rates vary year on year and by network. Allstar runs across roughly 7,400 sites and quotes up to 8p per litre off at participating sites. Shell quotes a few pence per litre off Shell-network forecourts for qualifying small businesses. BP quotes up to 6p at BP and Texaco. Texaco's Fastfuel card locks in a fixed weekly price. Real saving depends on how often the driver actually fills at a discounted site. A fleet that takes whatever is on the next forecourt extracts very little; a fleet that uses the network deliberately can shave 4 to 6p a litre off the year.
Visibility. Card statements show date, time, site, litres, fuel grade, mileage if entered. The operator sees outliers: a card pumping 70 litres into a 60-litre tank, two fills on the same day at sites 100 miles apart, a card that always fuels on a Sunday morning when the van is supposed to be off the road.
The cost is the monthly card fee (usually £1 to £3 per card per month, sometimes free below a certain volume), the underuse fee where one applies, and the operational cost of resolving disputes when a card is declined or a transaction looks wrong. None of that is large for a fleet of more than three vans, and most of it is offset by the time saved on receipts.
What expense tracking does, and where it still wins
Expense tracking is the older system: drivers buy fuel on a personal card or with a float, keep receipts, claim back through payroll or accounts, and the business reimburses. Modern expense tracking apps replace the shoebox with a phone-camera capture and an OCR layer, but the model is the same.
This route still wins in three situations.
One-van sole traders. If the operator is the only driver and the van is the operator's own vehicle, fuel-card administration adds overhead the operator does not need. Receipts in a folder and an end-of-quarter reconciliation against the bank statement is enough. AMAP at 45p / 25p is usually the simplest route to claim; receipts for actual fuel and a logged mileage book are the alternative when actual costs exceed AMAP.
Drivers using their own vehicles for the occasional business trip. A salesperson or installer who runs a personal car and clocks 4,000 business miles a year is a textbook AMAP case. The employer pays 45p per mile up to 10,000, 25p after, and the driver keeps no fuel receipts because AMAP is meant to cover fuel and wear and tear in one rate. A fuel card for a vehicle the company does not own creates more problems than it solves.
Fleets that already run a strong expense workflow. A trade business with an accountant on payroll, a bookkeeping platform, and a habit of keeping receipts can run fuel through the existing channel. Adding a separate fuel-card invoice creates a second reconciliation. Sometimes the right call is to keep the system that already works.
The cost of expense tracking is the driver minutes per fuel purchase (a receipt photo, a mileage entry, a quick categorisation), the bookkeeper's time at month-end, and the audit risk of any missing receipts.
The decision: fuel card, expense tracking, or both?
There is no single right answer. The shape of the fleet decides. Three patterns cover most small operations.
One-van sole trader, own vehicle. Expense tracking, AMAP at 45p per mile, no fuel card needed. Receipts kept for non-fuel costs. The 25p rate above 10,000 miles is where the maths starts to feel tight, but the simplicity is worth it for most.
Two to ten company vans, all-business use, VAT registered. Fuel card. The consolidated VAT invoice and the removal of receipt admin pays for the monthly fee inside the first month. The discount per litre is the bonus, not the reason.
Mixed fleet, company vans plus personal vehicles claiming AMAP. Both, but with explicit policy. Company vans run on the card, employees on personal vehicles claim AMAP through expenses, and the two systems do not cross. Drivers do not put fuel for a personal car on the company card, and no AMAP claim is ever submitted for a journey already paid for on the card. A clear policy and a quarterly reconciliation catches the mistakes; running both without policy is the most common mess HMRC finds at a small-fleet review.
The wrong question is "fuel card versus expense tracking" framed as ideology. The right question is which framework HMRC expects each driver to use, and which tool fits that framework with the least admin.
Three traps to avoid
These come up in every small fleet that takes a fuel card without thinking the policy through.
The personal-mileage trap. A driver fills up the company van on Friday evening and uses the van for a Saturday family trip. The fuel for the personal trip has been bought on the company card. Without a private-fuel-use rule and a deduction process, the operator owes a fuel benefit charge on every van that allows private use, and HMRC will find it.
The double-claim trap. A salesperson uses the company card to fuel a hire car on a business trip, then submits an AMAP claim for the same trip thinking the card was personal. AMAP claims must never be submitted for journeys whose fuel was already paid for by the company. The internal policy needs the rule and the reconciliation needs to catch it.
The receipt-shaped hole. A small fleet on expense tracking with no fuel card works fine until the receipts go missing. HMRC at a VAT inspection asks for the underlying fuel receipts that back the input VAT reclaim, and "we lost a few" is not an answer. Either keep the receipts as a process that is audited monthly, or move to a fuel card and use the consolidated invoice as the record.
How Autodue handles fuel and mileage tracking
Autodue treats fuel as one of the 14 expense categories tracked per vehicle. Drivers log mileage and fuel in the app on the day, with photo evidence of the receipt or the pump, and the app rolls totals up per van per month. For fuel-card fleets, the card statement reconciles against the per-van fuel total; for expense-tracking fleets, the photo receipts replace the shoebox.
Mileage capture supports both AMAP claims for personal vehicles and AFR reimbursement for company vehicles, which keeps the two HMRC frameworks separate in the records. Cost-per-mile, cost-per-vehicle and cost-per-driver views drop out of the same data, so the decision to renew or end a fuel-card contract is a numbers conversation, not a feel.
For the wider expense picture see how to track vehicle expenses for tax deductions, and for the cost-per-mile maths the cost per mile guide walks through the inputs.
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The bottom line
For a one-van sole trader, expense tracking with AMAP is usually the simplest route in 2026 and the maths still works at the lower mileage band. For a two-to-ten van company-owned fleet, a fuel card pays for itself in administration savings and tighter VAT records inside the first month. For a mixed fleet, run both with an explicit policy and a quarterly reconciliation; do not run both informally and hope. The choice is operational, not ideological. Pick the one that fits the framework HMRC expects each driver to use, and the admin shrinks instead of growing.
Track fuel, mileage and every other vehicle cost in one place with Autodue.
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Sources: HMRC Approved Mileage Allowance Payments rates (GOV.UK) · HMRC Advisory Fuel Rates (GOV.UK) · Mileage Allowance Payments briefing (House of Commons Library) · Van benefit charge and fuel benefit charges 2026 to 2027 (GOV.UK)