If you are earning side income in the UK, there may come a point where operating as a limited company becomes more beneficial than remaining a sole trader.
In general, many people start considering a limited company when profits begin reaching around £30,000–£50,000 per year, when tax efficiency becomes more important, or when they want greater legal separation between themselves and their business.
This guide explains when going limited makes sense, the potential advantages, and the situations where remaining a sole trader may still be the better option.
Quick Answer
- Most people start as sole traders
- A limited company may become worthwhile as profits grow
- Limited companies involve more admin and compliance
- Tax efficiency can improve at higher income levels
- Limited liability can offer additional protection
What Does “Going Limited” Mean?
Going limited means creating a limited company through Companies House instead of operating personally as a sole trader.
The company becomes a separate legal entity.
This means:
- the company earns the income
- the company pays tax
- you pay yourself through salary and/or dividends
Why People Consider Going Limited
There are three main reasons people switch from sole trader to limited company:
1️⃣ Tax Efficiency
This is usually the biggest reason.
As a sole trader:
- profits are taxed as personal income
- you pay Income Tax and National Insurance
With a limited company:
- the company pays Corporation Tax
- you can structure how you pay yourself
At higher profit levels, this can sometimes reduce overall tax.
2️⃣ Limited Liability
As a sole trader, you are personally responsible for business debts.
With a limited company, the company is legally separate from you.
This can provide additional protection for personal assets in many situations.
3️⃣ Professional Credibility
Some clients and businesses prefer working with limited companies.
In some industries, operating through a company can appear more established and professional.
When Staying Sole Trader Usually Makes More Sense
For many people, remaining a sole trader is still the better option early on.
This is especially true if:
- your income is still relatively low
- your side hustle is part-time
- you want minimal admin
- you are testing an idea
Sole trader setup is simpler and easier to manage.
To understand the basics first, see our guide on registering as self-employed in the UK.
Do I Need to Register as Self-Employed in the UK? (2026 Guide)
Signs You May Be Ready to Go Limited
There is no exact threshold, but common signs include:
Your profits are increasing significantly
Many people begin reviewing the option around:
- £30,000–£50,000+ annual profit
You want better tax planning options
Limited companies offer more flexibility around:
- salary
- dividends
- retained profits
You want legal separation
If your work carries more financial or legal risk, limited liability may become more valuable.
Your business is becoming more serious
You may want:
- stronger branding
- business banking
- clearer financial separation
Additional Responsibilities of a Limited Company
A limited company also brings additional admin requirements.
These include:
- Annual accounts
- Confirmation statements
- Corporation Tax returns
- Payroll responsibilities
- Director responsibilities
Many people choose to work with an accountant at this stage.
Costs of Running a Limited Company
Running a company is not free.
Typical costs may include:
- Accounting software
- Accountant fees
- Payroll setup
- Filing support
This is why going limited too early is often unnecessary.
Common Mistakes to Avoid
Switching too early
Many people create a company before the financial benefits outweigh the admin.
Focusing only on tax
Tax matters, but simplicity and flexibility matter too.
Mixing personal and business finances
Once limited, keeping proper separation becomes very important.
Sole Trader vs Limited Company: Which Is Better?
There is no universal answer.
For most beginners:
👉 sole trader is the simplest starting point.
As profits, complexity, and long-term plans grow:
👉 limited company may become increasingly beneficial.
For a full comparison, see our guide on sole trader vs limited company in the UK.
Sole Trader vs Limited Company in the UK (2026 Guide)
Final Thoughts
Going limited can be a smart move when your side income becomes more established, profitable, or complex.
However, many people move too early without fully understanding the additional admin and responsibilities involved.
For most side hustlers, starting simple and reviewing the option later is usually the most practical approach.
To understand how side income is taxed before making a decision, see our guide on how side income is taxed in the UK.