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Gig Worker Tax Guide — Cardiff 2026
By Ethan Blake · Tax Compliance Specialist
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Updated June 2026
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~5 min read
2026 Tax Summary — Cardiff
Delivery Drivers workers in Cardiff pay 6% Class 4 NI on profits over £12,570 in 2025/26. On £22 000 gross: approximately £566 NI + £1 320 Income Tax = £1 886 total. Mileage: 45p/mile (first 10,000). Self Assessment deadline: 31 January 2027. Wales uses UK (not Welsh) Income Tax rates for self-employed income.
Key Takeaways
- Class 4 NI: 6% on profits £12,570–£50,270, then 2% above
- Mileage allowance: 45p/mile (first 10,000 miles), 25p/mile after
- Personal Allowance: £12,570 — no tax on income below this
- Register for Self Assessment by 5 October 2026 if first year
- 1099-NEC equivalent: HMRC Digital Platform Reporting — platforms report your earnings directly
Tax Breakdown — Delivery Drivers Cardiff 2026
| Gross Income | Class 4 NI (6%) | Income Tax | Total Tax | Take-Home |
|---|
| £15,000 | £146 | £486 | £632 | £14,368 |
| £20,000 | £446 | £1,486 | £1,932 | £18,068 |
| £22 000 | £566 | £1 320 | £1 886 | £20 114 |
| £40,000 | £1,646 | £5,486 | £7,132 | £32,868 |
Top Tax Deductions for Delivery Drivers Workers
| Expense | Rate / Amount | Notes |
|---|
| Vehicle mileage | 45p/mile | First 10,000 miles; 25p/mile after |
| Bicycle mileage | 20p/mile | All business miles |
| Phone & data | Business % | Proportion used for work |
| Equipment & uniform | 100% | Bags, boxes, safety gear |
| Trading Allowance | £1,000 | Instead of actual expenses if income under £1,000 |
| Home office | £6/week flat rate | HMRC simplified expenses |
HMRC Self Assessment — Key Deadlines 2026
| Deadline | Date | Action Required |
|---|
| Register for Self Assessment | 5 Oct 2026 | If 2025/26 is your first year |
| Paper SA return | 31 Oct 2026 | File paper return |
| Online SA return | 31 Jan 2027 | File online + pay tax owed |
| Payment on Account 1 | 31 Jan 2027 | 50% of previous year's bill |
| Payment on Account 2 | 31 Jul 2027 | Remaining 50% |
"Self-employed workers must register for Self Assessment if their trading income exceeds £1,000 in a tax year. Class 2 National Insurance was abolished from April 2024." — GOV.UK — Self Assessment
Frequently Asked Questions
Do Cardiff gig workers pay Welsh Income Tax?
Welsh rates currently match UK rates for self-employed income. There is no additional Welsh tax burden for Cardiff delivery drivers in 2025/26.
How much tax do Cardiff gig workers pay in 2026?
A Cardiff gig worker on £22,000 pays approximately £566 Class 4 NI + £1,320 Income Tax = £1,886 total after the Personal Allowance.
Which delivery platforms operate in Cardiff?
Deliveroo, Uber Eats, Just Eat, and Amazon Flex all operate in Cardiff. All treat couriers as self-employed contractors.
Do Cardiff gig workers file Self Assessment with HMRC?
Yes. All UK self-employed workers including Wales file Self Assessment with HMRC. Deadline: 31 January 2027 for 2025/26.
What is the mileage rate for Cardiff delivery drivers?
45p/mile for cars/motorbikes (first 10,000 miles), 25p/mile after, and 20p/mile for bicycles.
Related Guides
National Insurance Guide →HMRC Self Assessment →Mileage Allowance →
EB
Written & reviewed by
Ethan Blake
Tax Compliance Specialist · Reviewed June 2026
Tax compliance specialist since 2017. Helped 5,000+ freelancers and self-employed workers navigate HMRC Self Assessment and UK gig economy tax rules.