Self-Employment Guides UK — Tax, Business Setup, and Running Your Own Business

Contractor vs Freelancer vs Sole Trader — What's the Difference?

Understand the differences between contractor, freelancer, and sole trader in the UK. Tax, legal status, and which is right for your situation.

By PocketWise · · 5 min read

Self-employment tax and business information is based on current HMRC rules. This is not tax or accounting advice. Consider consulting a qualified accountant for your specific circumstances.

Start here: Freelancing Hub.

If you want a complete route through sole-trader setup, tax, NI, and day-to-day operations, use the Sole Trader Hub as your main guide.

These terms are often confused. Here’s what each actually means and which structure works best for different situations.

Quick Comparison

Term What It Means Legal Status Typical Industries
Sole trader Business structure Self-employed individual Any
Freelancer Working style Usually sole trader Creative, marketing, writing
Contractor Working style Usually Ltd company IT, engineering, finance

What is a Sole Trader?

Definition

A sole trader is the simplest business structure. You’re self-employed as an individual — you and your business are legally the same.

Aspect Sole Trader Details
Legal structure Individual, not a company
Liability Personal (unlimited)
Tax Income tax on profits
National Insurance Class 2 and Class 4
Accounting Self Assessment tax return
Setup Register with HMRC

Pros and Cons

Pros Cons
Simple to set up Unlimited personal liability
Low admin Less tax-efficient at higher income
Privacy (no public accounts) Can look less professional
Easy to close Harder to raise investment
All profits are yours Business relies on you

Who Should Be a Sole Trader

Situation Sole Trader Suitable?
Just starting out Yes — test the waters
Earning under £40k profit Yes — simplicity wins
Low risk work Yes — liability less concern
Want minimal admin Yes — simplest option
Earning £60k+ Consider limited company

What is a Freelancer?

Definition

A freelancer is someone who works for themselves, typically taking on multiple clients for projects or ongoing work. It’s a working style, not a legal structure.

Aspect Typical Freelancer
Clients Multiple, varied
Projects Short to medium term
Control High — you choose work
Location Often remote/flexible
Legal structure Usually sole trader

Common Freelance Industries

Industry Typical Work
Writing & editing Content, copywriting, journalism
Design Graphic, web, UX
Marketing Social media, SEO, PPC
Photography Events, commercial, stock
Web development Websites, apps
Consulting Business, finance, HR

Freelancer Characteristics

Characteristic Meaning
Multiple clients Not dependent on one
Own tools Provide your own equipment
Set your rates You decide pricing
Control schedule Work when you want
Invoice for work Bill clients after delivery

What is a Contractor?

Definition

A contractor typically works on longer engagements, often for one client at a time, providing specialist skills. Many contractors use limited companies for tax efficiency.

Aspect Typical Contractor
Clients One or few at a time
Engagements Months to years
Rate Day rate or project fee
Structure Often limited company
Industries IT, engineering, finance

Contractor Characteristics

Characteristic Details
Specialist skills In-demand expertise
Higher rates £200-£800+/day common
Inside client organisation Work on-site or remotely
Fixed-term Specific engagement period
Via agency Often through recruiters

How Contractors Typically Work

Arrangement Description
Outside IR35 Contractor is genuinely in business, Ltd company benefits apply
Inside IR35 Would be employee without company, limited tax benefits
Umbrella company PAYE employment, simpler than Ltd
Structure Tax Liability Admin Best For
Sole trader Income tax on profits Unlimited personal Low Starting out, lower incomes
Limited company Corporation tax + salary/dividends Limited to company High Higher earners, liability protection
Umbrella PAYE None (employee) Minimal Contractors who want simplicity
Partnership Split profits, income tax Usually unlimited Medium Working with others

Tax Comparison

Sole Trader Tax

Income Tax Rate
Up to £12,570 0% (Personal Allowance)
£12,571–£50,270 20%
£50,271–£125,140 40%
Over £125,140 45%

Plus National Insurance:

  • Class 2: £3.45/week
  • Class 4: 9% on profits £12,570-£50,270, 2% above

Limited Company Tax

Component Rate
Corporation tax on profits 25% (19% if under £50k)
Tax on salary Income tax + NI
Tax on dividends 8.75%/33.75%/39.35%

Example: £60,000 Profit

Structure Approximate Take-Home
Sole trader ~£44,000
Limited company ~£47,000

Difference grows at higher incomes. But Ltd has accounting costs (~£1,500/year) and more admin.

IR35 — What Contractors Need to Know

What is IR35?

Rules to prevent disguised employment. If you’d be an employee without your company, you pay similar taxes to an employee.

Inside vs Outside IR35

Factor Outside IR35 Inside IR35
Tax treatment Ltd company benefits Employee-like taxation
Control of work You decide how Client dictates
Substitution Can send someone else Must do it yourself
Equipment Provide your own Use client’s

IR35 Indicators

Indicator Outside IR35 Inside IR35
Substitution right Can send replacement Must do work personally
Control You decide how/when Client controls
Mutuality of obligation No ongoing obligation Expected to work
Financial risk You bear losses Client bears
Part of organisation Your own business Integrated into client

Choosing Your Structure

Start as Sole Trader If:

Situation Why Sole Trader
Just starting Simple, test business idea
Earning under £40k Tax difference minimal
Don’t want admin Easiest to manage
Low liability risk Personal liability acceptable

Consider Limited Company If:

Situation Why Limited Company
Earning £40k+ profit Tax savings significant
Want liability protection Company is separate entity
Building a brand/team More professional, can hire
Contractors (outside IR35) Required for day rate work

Use Umbrella If:

Situation Why Umbrella
Inside IR35 No point having Ltd
Short contracts Admin not worth it
Don’t want responsibility They handle everything
Testing contracting Before committing to Ltd

Converting Between Structures

Sole Trader to Limited Company

Step Action
1 Register company at Companies House
2 Open business bank account
3 Transfer clients/contracts
4 Register for Corporation Tax
5 Continue Self Assessment for sole trader period

When to Convert

Situation Action
Consistent £40k+ profit Consider converting
Growing team Ltd makes sense
Higher risk work Liability protection valuable
Temporarily lower income May not be worth it

Practical Differences

Invoicing

Freelancer Style Contractor Style
Project-based Day rate × days worked
Milestone payments Monthly invoice
Various clients One or few clients

Client Relationships

Freelancer Contractor
Short-term projects Long-term engagements
Multiple clients One main client
Portfolio of work Specialist on one project
More variety Deeper expertise

Summary

Question Answer
Terms are interchangeable? No — sole trader is legal, freelancer/contractor are work styles
Must freelancers be sole traders? No — can be Ltd, but most start as sole trader
Must contractors have Ltd company? No — but many do for tax, umbrellas are an option
Which is best? Depends on income, risk, IR35 status, and preference

Start simple as a sole trader, then review your structure as your income grows or circumstances change. Get professional advice when transitioning to a limited company or navigating IR35.

You Might Also Find Useful

Sources

  1. GOV.UK — Set up as a sole trader
  2. HMRC — Off-payroll working (IR35)