A Practical Start-Up Guide for New Business Owners
Starting a business is an exciting step, and for many people in the UK the simplest way to begin is by operating as a sole trader.
This structure is commonly used by freelancers, consultants, tradespeople, and small service businesses because it is straightforward to set up and has relatively low administration requirements.
In this guide we explain what being a sole trader means, how to register, and what responsibilities come with running a business in your own name.
What Is a Sole Trader?
A sole trader is an individual who runs a business personally rather than through a limited company.
There is no legal separation between you and the business. This means:
- You keep all profits after tax
- You control all decisions
- You are personally responsible for debts and liabilities
It is the most common structure for start-ups and small businesses in the UK. Becoming a Sole Trader
Advantages of Being a Sole Trader
Simple Setup
Becoming self-employed is relatively quick. You simply register with HMRC and begin trading.
There is no requirement to register with Companies House or file company accounts.
Lower Administration
There are fewer formal requirements compared with running a limited company.
Typically you only need to:
- Keep records of income and expenses
- Submit an annual Self Assessment tax return
- Pay Income Tax and National Insurance
Full Control
As the business owner, you make all decisions. There are no shareholders or directors involved.
Privacy
Unlike limited companies, your accounts are not published publicly.
Potential Disadvantages
While the simplicity is attractive, there are some risks to consider.
Unlimited Liability
You are personally responsible for business debts and legal claims.
If the business cannot pay its liabilities, your personal assets could potentially be affected.
Tax Efficiency Limits
Sole trader profits are taxed as personal income:
- 20% basic rate
- 40% higher rate
- 45% additional rate
Unlike limited companies, profits cannot be extracted through dividends.
Harder to Raise Investment
Because sole traders cannot issue shares, bringing investors into the business is more difficult.
How to Register as a Sole Trader
There are a few key steps to starting properly.
1. Register With HMRC
You must register as self-employed by 5 October following the end of the tax year you started trading. Becoming a Sole Trader
Once registered you will submit Self Assessment tax returns each year.
2. Keep Proper Records
You should maintain records of:
- Income
- Expenses
- Invoices
- Receipts
These must normally be kept for at least five years after the 31 January filing deadline. Becoming a Sole Trader
3. Pay Tax and National Insurance
Sole traders typically pay:
- Income Tax on profits
- Class 2 National Insurance
- Class 4 National Insurance
Payments are normally due:
- 31 January
- 31 July (payments on account may apply)
4. Consider a Business Bank Account
While not legally required, separating business and personal finances makes bookkeeping far easier and avoids confusion later.
5. Check Insurance Requirements
Depending on your trade you may need:
- Public Liability Insurance
- Professional Indemnity Insurance
- Employers’ Liability Insurance
6. VAT Registration
If your turnover exceeds the VAT threshold you must register for VAT.
In some cases, voluntary registration below the threshold may also be beneficial.
When Should You Consider a Limited Company?
For many new businesses, starting as a sole trader is the simplest route.
However, as profits grow it may become more tax efficient to operate through a limited company.
This often becomes worth reviewing when profits reach around £40,000–£60,000.
At this stage factors such as higher rate tax, liability protection, and long-term growth plans can make incorporation more attractive.
Common Start-Up Mistakes
Many new business owners run into problems simply because they were not given the right guidance early on.
Common issues include:
- Not registering with HMRC on time
- Failing to set money aside for tax
- Mixing personal and business spending
- Poor record keeping
- Underestimating tax payments
Good planning early on can prevent major cashflow surprises later.
The GMS Approach
At GMS Business Accountants, we believe tax planning should be proactive rather than reactive.
That means helping business owners understand their profit levels, tax exposure, and options throughout the year — not just when the tax return is due.
This can include:
- Monitoring profit levels regularly
- Managing higher-rate tax exposure
- Timing capital expenditure
- Planning pension contributions
- Reviewing whether incorporation could reduce tax
Compliance is essential — but planning is where real value is created.
If you are starting a business and want clarity around tax, structure, and record keeping, speaking to an accountant early can make the entire process smoother.
Disclaimer: This article is for general guidance only and does not constitute personalised tax advice. Professional advice should be obtained before acting on the information provided.
Written by Graham Wesson
Director – GMS Business Accountants
Specialist in SME tax and business advisory
