If you drive a taxi, private hire vehicle, or work through an app like Uber, Bolt, or FreeNow, you’re almost certainly self-employed in HMRC’s eyes — which means you’re responsible for working out and paying your own income tax and national insurance, usually with nothing deducted before the money reaches you. That catches a lot of drivers out, especially in year one, when the first tax bill turns out to be much bigger than expected.
This guide walks through exactly what you’ll actually owe: the current tax and National Insurance rates, what you can claim to bring your bill down, a change to the mileage rate that’s easy to miss, and the one thing almost nobody warns new drivers about why your first payment to HMRC is often 50% more than the tax on your first year’s profit.
The basics: what counts as taxable income
Every fare you earn is self-employment income, whether it comes through a taxi rank, a private hire booking, or an app. If you drive for Uber, Bolt, or FreeNow, it’s the gross fare that counts as your income — not just what lands in your bank account after the platform’s commission. The commission itself is then claimed back separately as an allowable business expense. A lot of drivers under-report simply by only declaring their net payout, which understates their turnover and can cause problems later.
Since January 2024, the UK’s Reporting Rules for Digital Platforms require Uber, Bolt, FreeNow, and similar platforms to collect and report driver earnings data directly to HMRC every year. HMRC is actively cross-checking this data against Self Assessment returns, and drivers with undeclared or under-declared platform income have been receiving “nudge letters” as a result. In short: your platform already tells HMRC what you earned, so there’s no upside to under-reporting it.
Income Tax and National Insurance rates
For the 2026/27 tax year, a self-employed taxi driver pays two things on their profit: Income Tax and Class 4 National Insurance.
Income Tax:
- First £12,570 of income — tax-free (the Personal Allowance)
- £12,571 to £50,270 — 20% (basic rate)
- £50,271 to £125,140 — 40% (higher rate)
- Above £125,140 — 45% (additional rate)
If your total income (not just taxi income) goes above £100,000, your Personal Allowance starts shrinking — you lose £1 of it for every £2 earned above that point, disappearing completely at £125,140. Worth knowing if you have other earnings alongside driving.
Class 4 National Insurance:
- 6% on profits between £12,570 and £50,270
- 2% on profits above £50,270
Class 2 National Insurance — an important correction: you may have read elsewhere that Class 2 NI is a mandatory weekly charge for self-employed people. That’s now out of date. Since April 2024, if your profits are at or above the Small Profits Threshold (£7,105), you’re treated as having paid Class 2 automatically and it protects your state pension record, with no payment actually due. Below that threshold, you can still choose to pay it voluntarily at £3.65 a week if you want to keep your NI record topped up. A surprising number of guides still describe this incorrectly, so it’s worth knowing you likely owe nothing here at all.
The £1,000 Trading Allowance (and why it won’t help you)
HMRC offers a £1,000 tax-free Trading Allowance that lets you deduct a flat £1,000 from your gross income instead of claiming your actual expenses. For most side-hustles this is a genuine option — but for a taxi or PHV driver, it almost never makes sense. Once you count fuel, insurance, licence fees, and vehicle costs, your real expenses will almost always come to well over £1,000, and you can’t combine the flat allowance with claiming real costs on top. In practice, this allowance exists for completeness rather than as something worth using here — real expenses will save you more.
What you can actually claim
You have a choice between two methods for vehicle costs, and you must pick one and stick with it for that vehicle:
Simplified mileage rate — for 2026/27, this is 55p per mile for your first 10,000 business miles each year, then 25p per mile after that (24p for motorcycles). This rate rose from 45p — unchanged since 2011 — so if you’ve seen 45p quoted anywhere recently, that figure is now out of date.
Actual costs — fuel, servicing, repairs, MOT, insurance, and capital allowances on the vehicle itself (typically an 18% writing-down allowance on the main pool, lower for higher-emission vehicles), based on real receipts.
Whichever method you choose, you can also separately claim: your driver’s licence fee, vehicle/operator (taxi or PHV) licensing fees, breakdown cover, cleaning and valeting, parking and tolls incurred while working, phone and data costs for booking apps, radio or dispatch fees, platform commission, advertising, and your accountancy fees.
Making Tax Digital: the gross income trap
Making Tax Digital for Income Tax (MTD ITSA) is being phased in based on income level, and it’s rolling out now:
- £50,000 qualifying income → mandatory from 6 April 2026 (already in effect)
- £30,000 qualifying income → mandatory from 6 April 2027
- £20,000 qualifying income → mandatory from 6 April 2028
Here’s the part that catches taxi drivers out specifically: these thresholds are measured on gross qualifying income — your total fares before expenses — not your net profit. A driver grossing £45,000 in fares with a genuine net profit of £15,000 after expenses is still measured against the £45,000 figure. If your total takings are anywhere near these thresholds, it’s worth checking your actual gross turnover, not just what you feel like you’ve “made,” since MTD compliance (digital record-keeping and quarterly submissions instead of one annual return) can arrive sooner than expected.
The bill nobody warns you about: Payment on Account
This is the single most common shock for newly self-employed drivers, and it’s rarely explained clearly anywhere. If your Self Assessment bill comes to more than £1,000 (and less than 80% of your tax was already collected another way), HMRC requires you to make two advance payments toward next year’s tax — each equal to 50% of your current year’s total tax and Class 4 NI bill. These are due 31 January (alongside your current year’s balancing payment) and 31 July.
In practice, this means your first-ever tax bill isn’t just what you owe for the year just gone — it’s that amount, plus 50% again as an advance payment toward the year ahead. Your actual first payment can come to roughly 150% of your annual tax liability. It evens out in later years (the advance payments are credited against what you actually owe), but the first year genuinely does cost more upfront than most new drivers expect.
A worked example
Say a driver earns £42,000 in gross fares over the year, working through a mix of ranks and app bookings.
- Gross fares: £42,000
- Less platform commission: −£8,000
- Less mileage claim (55p/25p rate), licence fees, insurance, phone, and cleaning: −£6,000
- Net profit: £28,000
- Personal Allowance: −£12,570
- Taxable income: £15,430
- Income Tax at 20%: £3,086
- Class 4 NI at 6% on profit above £12,570: £932
- Total tax and NI owed: £4,018
If this is the driver’s first year over the £1,000 threshold, their actual payment due by 31 January isn’t £4,018 — it’s £4,018 plus a 50% payment on account of £2,009, bringing the real first payment to around £6,027. The second payment on account (a further £2,009) falls due the following 31 July. Knowing this in advance is the difference between a manageable tax bill and a genuinely stressful one.
Key deadlines to know
- 5 October — register for Self Assessment, if this is your first year of trading
- 31 January — file your online return and pay your balancing payment (and first payment on account, if applicable)
- 31 July — second payment on account due, if applicable
- 31 October — deadline for paper returns (much earlier than the online deadline)
Frequently asked questions
Do I need to declare Uber or Bolt income separately from cash fares?
No — all of it counts as one self-employment income, declared together on the same Self Assessment return, using your gross fares before commission.
Will HMRC know if I don’t declare my app-based earnings?
Very likely, yes. Since January 2024, platforms like Uber, Bolt, and FreeNow are required to report driver earnings data directly to HMRC, which actively cross-checks it against Self Assessment returns.
Can I claim both mileage and fuel costs?
No — you choose one method (simplified mileage rate or actual costs) per vehicle and use it consistently for as long as that vehicle is used in the business.
Do I still have to pay Class 2 National Insurance?
For most drivers, no. Since April 2024, profits at or above £7,105 are treated as having paid Class 2 automatically, with no actual payment due.
Why was my first tax bill so much higher than I expected?
Almost certainly Payment on Account — if your bill was over £1,000, HMRC collects 50% again in advance toward next year’s tax, due at the same time as your balancing payment.
