Self-Employed Ride-Hailing Driver Tax in Glasgow: Replacing Your Car for the LEZ (2026 Update)

Self-employed ride-hailing driver tax in Glasgow changes in the year your old car fails the Low Emission Zone (LEZ) standard and has to go. The replacement is the one point where you can switch between the simplified mileage rate and actual costs, and the old car's tax position has to be closed off in the same tax year.

Get those two decisions right and the swap can reduce your 2026/27 bill. Get them wrong and you can lose relief for years, or face a balancing charge you did not plan for. This guide to self-employed ride-hailing driver tax walks a Glasgow sole trader through the decision in order, with figures checked on GOV.UK for the 2026/27 tax year.

Key takeaways

• A replacement car is a fresh choice: you can pick the mileage rate or actual costs for it, whatever you used on the old car.
• If the old car was on the mileage rate, nothing extra is claimed or taxed when you sell or scrap it. If it was on capital allowances, expect a balancing allowance or balancing charge.
• According to GOV.UK, new zero-emission cars bought before April 2027 qualify for a 100% first-year allowance; used electric cars do not.
• LEZ penalty charges are never deductible, and Scottish bands mean a balancing charge can be taxed at 42% once profit passes £43,662.
• Black cabs built for commercial use generally cannot use the mileage rate, so hackney drivers face a different decision from private hire drivers.

What is self-employed ride-hailing driver tax?

Self-employed ride-hailing driver tax is the Income Tax and Class 4 National Insurance a sole trader pays on profit from app-based and private hire fares, after allowable costs. In Glasgow, Income Tax is charged at Scottish rates, while National Insurance and vehicle rules are UK-wide.

For the wider picture on bands, payments on account and registration, read our complete guide to self-employed driver tax in Glasgow. This article stays on one question: what happens to your tax when the LEZ or licensing rules force a car change.

Why are Glasgow drivers replacing cars in 2026?

Glasgow drivers replace cars because a licensed private hire car or taxi has to meet the council's emission standard, and a non-compliant car cannot be driven in the city-centre LEZ without risking a penalty. Council age limits for private hire cars also retire older vehicles, so many drivers face a swap whether or not they enter the zone.

Glasgow City Council's published LEZ information says licensed taxis and private hire cars have had to meet its low emission standards since 31 May 2023: Euro 4 for petrol, Euro 6 for diesel, or an electric or retrofitted vehicle. General enforcement of the zone started on 1 June 2023. The council's website blocks automated checks, so confirm the current wording on the council's licensing pages before you buy.

The Scottish Government's Low Emission Zone vehicle and fines guidance sets the penalty for a car at £60, halved if paid within 14 days. It doubles each time the same vehicle is caught in the same zone within 90 days, up to £480, and resets after 90 clear days. Hybrids are tested against the same Euro standards as petrol or diesel cars; fully electric cars are outside the restrictions.

On age, the council approved a 10-year policy for private hire cars in September 2023, replacing the old seven-year limit. Councils can also grant local time-limited exemptions of up to one year. Treat any exemption as a breathing space for planning the tax side, not as a reason to delay the decision.

Can you change from actual costs to simplified mileage when you replace your car?

Yes, but only at the replacement. HMRC's Business Income Manual says that once you use the mileage rate for a vehicle you must keep using it for as long as that vehicle stays in the business, and you can only change to or from actual costs when the vehicle is replaced. The new car is a clean slate.

The rule works the other way too. According to GOV.UK's simplified expenses guidance for vehicles, you cannot use the flat rate for a vehicle you have already claimed capital allowances on. So the method you pick for the replacement will stay with it until that car leaves the business too.

For 2026/27 the flat rate is 55p a mile for the first 10,000 business miles and 25p after that, up from 45p before 6 April 2026. Run your expected miles through our mileage calculator before you commit, because the 10,000-mile step matters a lot for full-time drivers.

One exception catches Glasgow's hackney trade. HMRC's manual entry BIM75005 says the flat rate does not cover cars designed for commercial use, with black cabs given as the example. A driver replacing a purpose-built taxi will normally be on actual costs and capital allowances by default.

What happens to your tax when you sell or scrap the old car?

It depends on how you claimed for it. If the old car was on the mileage rate, the sale price is ignored for tax, because the flat rate already included depreciation. If it was on capital allowances, the sale or scrap value is compared with its tax written-down value, giving a balancing allowance or a balancing charge.

If the old car was on the mileage rate

Nothing extra goes on your return. You stop logging miles for the old car on the day it leaves the business and start a new log for the replacement. Do not try to claim a loss on a non-compliant diesel that sold for very little: under the mileage rate, that fall in value has already been allowed for in every mile you claimed.

If the old car was on capital allowances

A sole trader's car with any private use sits in its own single asset pool. When the car goes, the pool closes. If the money received is less than the pool balance, the difference is a balancing allowance that reduces profit. If it is more, the excess is a balancing charge that adds to profit. Either figure is cut by your private use percentage.

For a scrapped car, the disposal value is what you receive for the remains plus any insurance money. Non-compliant diesels often fetch little inside Scotland's LEZ cities, so a balancing allowance is the more common outcome. A car that was written down fast, or claimed with a 100% allowance, can produce a charge instead. Our Newcastle guide to selling a car you claimed allowances on walks through the pool mechanics in more depth.

Does a new electric car get a 100% first-year allowance in 2026/27?

Yes, if it is new and unused. GOV.UK's first-year allowance guidance says electric cars and cars with zero CO2 emissions bought before April 2027 qualify for a 100% first-year allowance. A second-hand electric car does not; it goes into the main rate, which is 14% a year from 6 April 2026 for Income Tax.

The GOV.UK first-year allowances page gives the month but not the exact day of the April 2027 cut-off, so do not leave an order until the last week. A delayed delivery could push the purchase past the deadline and drop the car to the 14% rate.

Two refinements matter for drivers. First, the 100% claim is reduced by your private use share. Second, GOV.UK confirms you do not have to take the whole allowance at once: any part you do not claim can be relieved through writing down allowances later. That helps in a year when profit is already low.

If you are weighing an electric car against a hybrid, our Sheffield guide to the mileage rate for electric and hybrid cars covers charging costs and the per-mile comparison. The point here is narrower: in Glasgow, an electric car settles the LEZ question for good, and if bought new it can also front-load your tax relief.

Which capital allowance rate applies to a used replacement car?

For cars bought from April 2021, GOV.UK's business cars guide puts any car with CO2 emissions of 50g/km or less, including a used electric car, in the main rate at 14% from April 2026. Cars above 50g/km go in the special rate at 6%. Most used petrol and hybrid cars that pass the LEZ fall into the 6% band.

That 6% figure is why actual costs can feel slow on a used petrol or hybrid replacement. A £15,000 car gives £900 of writing down allowance in its first year before private use. The rest of the cost is relieved gradually, or when the car is sold. Check the CO2 figure on the V5C or the GOV.UK business cars page before you decide.

Can you claim finance or lease costs on the replacement car?

Under actual costs, yes for the business share. Interest on a loan or hire purchase deal is a running cost, while the car's price goes through capital allowances. Lease rentals are claimable, with 15% disallowed for cars above 50g/km. Under the mileage rate, neither is added: HMRC says the flat rate already covers buying, hiring and leasing.

HMRC's manual on car hire costs (BIM47714) sets the 15% restriction for cars with CO2 emissions above 50g/km from 6 April 2021 for Income Tax. A fully electric lease avoids it. Keep the finance agreement, because it shows the split between capital and interest, and that split is what your accountant will need.

A word of caution on hire purchase. You are normally treated as owning a car bought on hire purchase, so capital allowances are claimed on the cash price rather than the monthly payments. Personal contract purchase and lease deals can work differently, so send the paperwork to whoever prepares your return before the year ends.

Are Glasgow LEZ penalty charges or support grants part of the tax picture?

Penalty charges are not. GOV.UK's list of travel expenses you cannot claim includes fines and penalty charges, and an LEZ Penalty Charge Notice is a penalty. Grants are different: a grant towards buying a compliant car is normally deducted from its cost before allowances are worked out.

HMRC's Capital Allowances Manual (CA14100) sets the general rule that a contribution towards qualifying spending, including one from a public body, comes off the cost. The Scottish Government points businesses to the Energy Saving Trust for current LEZ support. If you received a grant or interest-free loan, record exactly what it was for, because a grant towards disposal is not the same as one towards purchase.

How do Scottish tax bands change the value of each method?

For self-employed ride-hailing driver tax in Glasgow, Scottish bands change how much each pound of relief is worth. According to GOV.UK's Scottish Income Tax page, 2026/27 profit between £29,527 and £43,662 is taxed at 21%, and from £43,663 the rate jumps to 42%. Relief that keeps profit below that line is worth far more.

The full 2026/27 Scottish bands on GOV.UK's Scottish Income Tax page are: starter 19% from £12,571, basic 20% from £16,538, intermediate 21% from £29,527, higher 42% from £43,663, advanced 45% from £75,001 and top 48% above £125,140. Class 4 National Insurance is UK-wide at 6% on profit between £12,570 and £50,270, then 2%.

So a Glasgow driver whose profit sits around £45,000 gets combined relief of 48p (42% plus 6% National Insurance) on every pound that brings profit back under £43,663. The same pound is worth only 25p to 27p further down. A balancing charge works in reverse and can be taxed at that 48p combined rate.

Decision table: choosing a method for your replacement car

We built this table from the GOV.UK and HMRC rules above. It is a starting point for the conversation with your accountant, not a verdict, because private use, mileage and profit level all move the answer.

How to handle an LEZ car swap on your tax return, step by step

Follow these steps in order. Most of the costly errors we see come from doing step 4 before steps 1 to 3.

1. Confirm the replacement passes the LEZ and council licensing checks using the Scottish Government's vehicle checker and the council's licensing conditions, before you sign anything.
2. Find out how the old car was claimed in your last two returns: mileage rate or capital allowances. Ask for the pool figures if someone else prepared them.
3. Record the exact date the old car left the business and what you received for it, including any scrap value, insurance money or part-exchange figure on the invoice.
4. Pick the method for the new car using the decision table, your expected business miles and your expected 2026/27 profit.
5. Keep the purchase invoice, the V5C showing the CO2 figure, any finance or lease agreement and any grant letter in one folder.
6. Start a fresh mileage log on the day the new car goes into service, with the opening odometer reading, even if you choose actual costs, because you still need the business use percentage.
7. On the return, close the old car's pool and enter the new car's allowance or mileage claim in the same tax year, then check the effect on your Scottish band before you submit.

Illustrative example: a Glasgow private hire driver replaces a Euro 5 diesel

This illustrative example uses an invented driver, Fraser, and rounded figures. Fraser is a Scottish taxpayer who drives private hire full time. His Euro 5 diesel cannot be relicensed under the council's emission standard, so he sells it for £1,000 on 10 April 2026. It had been on capital allowances with a single asset pool balance of £2,400 and 15% private use.

Closing the old pool gives a balancing allowance of £1,400 (£2,400 less £1,000). After 15% private use, £1,190 reduces his 2026/27 profit. That figure is the same whichever method he picks for the new car. His takings after app service fees are £48,000, other business costs are £2,000, and he expects 30,000 business miles.

In year one the mileage rate saves Fraser about £792. The actual costs route is not wasted, though: £14,100 of the hybrid's cost stays in the pool to be relieved in later years or on sale. Under the mileage rate that cost is never separately relieved, so the comparison should run over the years he expects to keep the car.

Now suppose Fraser buys a new £32,000 electric car instead and takes the full 100% allowance. After 15% private use the allowance is £27,200, and with lower running costs his profit falls to about £12,850, barely above the £12,570 Personal Allowance. Most of that relief lands where his tax rate was 21% or less, and none is left for later years. Claiming only part of the allowance would keep more relief for years when it is worth more.

Common mistakes and the penalty each triggers

These are the errors we see most often when Glasgow drivers change cars mid-year. Where an error leads to too little tax, HMRC can charge interest and an inaccuracy penalty based on the extra tax, with the rate depending on whether the error was careless or deliberate.

• Switching the old car to the mileage rate in its final year to get a bigger claim. HMRC does not allow it once allowances have been claimed, so the claim is disallowed with interest and a possible careless inaccuracy penalty.
• Claiming a loss on the sale of a car that was on the mileage rate. There is no balancing allowance under the flat rate; the overclaim is reversed on enquiry.
• Forgetting to close the old pool. If the car was sold for more than its written-down value, an unreported balancing charge is understated profit and can attract a penalty.
• Claiming the 100% allowance on a used or ex-demonstrator electric car that does not qualify as new and unused. The allowance falls to the main rate, and the extra tax is due with interest.
• Adding lease payments or finance interest on top of the mileage rate. The flat rate already covers them, so the double claim is removed and may be penalised.
• Deducting LEZ Penalty Charge Notices. Fines are not allowable, and putting them through the accounts understates profit.
• Ignoring the private use share on the new car's allowance. Allowances must be cut for private use; claiming 100% business use without a log is hard to defend.

Key terms

• Low Emission Zone (LEZ): a city-centre area where vehicles that fail set Euro emission standards risk a Penalty Charge Notice; Glasgow's operates 24 hours a day.
• Simplified mileage rate: a flat amount per business mile (55p then 25p for 2026/27) that replaces actual running costs and capital allowances for that vehicle.
• Capital allowances: tax relief for the cost of a business car, claimed as a percentage each year or, for qualifying new zero-emission cars, all at once.
• Single asset pool: a separate capital allowance record for one car with private use, closed when the car leaves the business.
• Balancing allowance: extra relief when a car is sold or scrapped for less than its tax written-down value.
• Balancing charge: taxable income when a car is sold for more than its tax written-down value.
• First-year allowance (FYA): relief of 100% of the cost in the year of purchase for new, unused zero-emission cars bought before April 2027.
• Private hire vehicle (PHV): a pre-booked car licensed by the council, as distinct from a hackney carriage that can be hailed in the street.

How UK Driver Accountants helps

We work only with drivers, on fixed fees from £20 a month, and we are independent of any ride-hailing app. For a Glasgow driver replacing a car, we check how the old car was claimed, close its pool correctly, compare both methods for the new car over the years you expect to keep it, and test the result against the Scottish bands before your return is filed.

That work on self-employed ride-hailing driver tax sits inside our personal tax service for self-employed drivers. You can see what is included at each level on our pricing page, and our Glasgow drivers page explains how we handle Scottish taxpayer status and local licensing costs. If you still have last year's return to tidy up, our Glasgow step-by-step tax return guide covers the filing itself.

Conclusion

An LEZ replacement is a self-employed ride-hailing driver tax decision as much as a licensing one. Settle the old car first, choose the new car's method with your miles and your Scottish band in view, and keep the paperwork that proves each figure. If you are about to change cars, or changed one this year, contact our team for a fixed-fee review before you file.

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

This article is general information for the 2026/27 tax year and is not personal tax advice. Rules on allowances, grants and council licensing can change, so speak to a qualified accountant about your own circumstances. If HMRC opens an enquiry or proposes a penalty, we recommend professional representation.