Becoming a sole trader is the simplest way to start working for yourself in the UK, but simple does not mean there is nothing to do. This guide walks through the main steps in order, from deciding whether the structure suits you to registering with HMRC, keeping records, invoicing, insurance, pricing and finding clients. It gives general information only: tax rules and thresholds change, so check current figures on GOV.UK and speak to an accountant or adviser about your own situation.
Is being a sole trader right for you?
A sole trader is a self-employed person who runs a business as an individual. You keep all the profits after tax, make the decisions and have relatively light paperwork compared with a limited company. The trade-off is that there is no legal separation between you and the business, so you are personally responsible for any business debts.
The main alternatives are a partnership, where two or more people share responsibility, and a limited company, which is a separate legal entity with its own responsibilities and filing requirements at Companies House. Some people start as a sole trader and move to a limited company later as the business grows. An accountant can help you compare the tax and administrative differences for your circumstances.
Before you start, think about how you will cover your living costs while the business builds up, and whether you will keep a job alongside it at first. Being self-employed also means you will not get sick pay or holiday pay from an employer, and you will need to plan for your own pension. Having a small financial cushion makes the first months far less stressful.
- You are the business: profits and debts are yours personally
- Paperwork is lighter than for a limited company
- You can employ people as a sole trader
- You can change structure later if the business grows
Registering with HMRC
If your income from self-employment goes above the small trading allowance in a tax year, or you need to prove you are self-employed, you must register for Self Assessment. You need to register by 5 October following the end of the tax year in which you started trading. The tax year runs from 6 April to 5 April.
When you register, HMRC sends you a Unique Taxpayer Reference (UTR), which you will need for your tax return and often for clients. You will also set up a Government Gateway account to manage your tax online. Keep your UTR and login details somewhere safe, and be wary of emails or texts claiming to be from HMRC that ask for them.
Each year you will usually submit a Self Assessment tax return, with the online return and any tax owed normally due by 31 January after the end of the tax year. Depending on how much you owe, you may also need to make payments on account towards the next year's bill. National Insurance on self-employed profits is generally worked out through Self Assessment, and the rules have changed in recent years, so check GOV.UK for how it applies to you.
Making Tax Digital for Income Tax began in April 2026 for sole traders and landlords with qualifying income above a set threshold, which is due to fall in later years. If it applies to you, you will need compatible software to keep digital records and send quarterly updates to HMRC. Check the current threshold and timetable on GOV.UK even if you do not think it applies yet.
Naming your business and keeping money separate
You can trade under your own name or choose a business name. A sole trader's business name cannot include 'limited', 'Ltd', 'LLP' or 'plc', cannot be offensive, and certain sensitive words need permission. Check that your chosen name does not copy an existing trade mark, as this could lead to legal problems.
If you use a business name, you generally need to show your own name and a business address on documents such as invoices, letters and your website. This lets customers know who they are dealing with. It is also a good habit for building trust with new clients.
Although sole traders are not legally required to have a separate business bank account, using one makes record-keeping far easier. Every business payment in and out goes through one place, which saves time at tax return time and makes it simpler to see how the business is really doing. Check your bank's terms, as some banks require business activity to go through a business account.
| Obligation | When it applies | Where to check |
|---|---|---|
| Register for Self Assessment | Income from self-employment above the trading allowance, or you need proof of self-employment | HMRC guidance on GOV.UK |
| Keep business records | From your first day of trading, kept for at least five years after the filing deadline | HMRC record-keeping guidance on GOV.UK |
| Making Tax Digital for Income Tax | Qualifying income above the current threshold, which is being lowered in stages | Making Tax Digital guidance on GOV.UK |
| VAT registration | Taxable turnover above the VAT threshold in a rolling 12 months, or voluntarily | HMRC VAT guidance on GOV.UK |
| Employers' liability insurance | When you employ staff, with limited exemptions | Health and Safety Executive guidance |
| Data protection fee | When you process personal information, unless exempt | Information Commissioner's Office self-assessment |
| Trade licences and registrations | Certain activities, such as food, gas work and carrying waste | Your local council, GOV.UK and the relevant regulator |
Records, expenses and tax planning
You must keep records of all your business sales and income, and your business expenses. Keep invoices, receipts, bank statements and any records of payments. You need to keep them for at least five years after the 31 January submission deadline for the relevant tax year.
Allowable expenses are costs you incur wholly and exclusively for running your business, such as materials, tools, business insurance, phone costs and travel for work. Some costs have both business and personal use, and you can only claim the business part. HMRC guidance explains what counts, and an accountant can help with anything unclear.
Most sole traders now use the cash basis by default, which means you record income when you receive it and expenses when you pay them. Set aside a percentage of every payment you receive in a separate savings account for tax and National Insurance, so the bill in January does not come as a shock. Reviewing your figures monthly helps you spot problems early.
- Record every sale and expense as it happens
- Keep receipts, digital or paper, for every business cost
- Separate business and personal spending
- Put money aside for tax from every payment
- Keep records for at least five years after the filing deadline
Quotes, invoices and getting paid
Clear paperwork prevents most payment problems. Give written quotes that describe the work, the price, what is included and excluded, and how long the quote is valid. Agree payment terms before you start, such as a deposit, stage payments for larger jobs and the number of days for final payment.
Every invoice should include a unique invoice number, your name or business name and address, the customer's details, the date, a description of the work, the amount due and your payment terms and details. If you become VAT registered, your invoices must also include VAT information. Send invoices promptly, because a late invoice usually means late payment.
If a business customer pays late, the Late Payment of Commercial Debts (Interest) Act 1998 allows you to claim statutory interest and fixed compensation in many cases. For consumers, rely on clear terms agreed in advance. Follow up politely but firmly, and keep a record of every reminder.
Cash flow matters as much as profit. A business can be busy and profitable on paper yet still run short of money if customers pay slowly or large material costs are paid upfront. Taking deposits, invoicing stages of larger jobs and checking your bank balance against upcoming bills each week all help to keep money moving in the right direction.
Insurance, licences and regulations
If you employ anyone, you are generally legally required to have employers' liability insurance, although there are some exemptions. Public liability insurance, which covers claims from members of the public for injury or damage, is not usually a legal requirement, but many clients expect it and it is essential for trades working in homes or public places. Professional indemnity insurance covers claims that your advice or work caused a client financial loss, and some professional bodies require it.
Check whether your work needs a licence or registration. Examples include food businesses, which must register with the local council before trading, anyone doing gas work, who must be on the Gas Safe Register, and businesses that transport waste, which usually need to register as a waste carrier. Your local council and GOV.UK can help you check.
If you hold personal information about customers, you must follow UK data protection law, and you may need to pay a data protection fee to the Information Commissioner's Office. When selling to consumers, you must also follow consumer law, including giving clear information and, for contracts agreed away from your premises or online, explaining cancellation rights. Tell your home and vehicle insurers if you work from home or use your vehicle for business.
Pricing your work sustainably
Many new sole traders underprice their work because they compare themselves with an employee's hourly wage. Your price needs to cover not only your time on the job, but also unpaid time spent on quoting, travel, admin and marketing, plus business costs, tax, holidays, sickness and pension contributions. If you only count the hours you are paid for, you will almost certainly charge too little.
A useful approach is to work out the income you need for the year, add your expected business costs, and divide by the number of hours you can realistically bill. Compare the result with what others in your area charge for similar work. If your figure is higher, think about how you can show extra value, such as reliability, specialist skills or a guarantee.
Review your prices at least once a year and whenever your costs change. Give existing clients reasonable notice of increases. Charging a fair price allows you to do good work and stay in business, which is better for your customers too.
After each job, compare the time and materials you actually used with what you quoted. This quickly shows whether some types of work are more profitable than others, and where your estimates tend to be too optimistic. Over a few months, these notes become a reliable basis for faster and more accurate quoting.
Finding and keeping clients
Start with the people who already know you: former colleagues, suppliers, neighbours and friends who can recommend you. Make it easy for people to find and trust you with a simple website or online profile showing what you do, the area you cover, examples of work and how to contact you. Only use genuine reviews, and never pay for or write fake ones.
Keep a simple list of enquiries, quotes and jobs, and follow up on quotes that have not been answered. Respond quickly and professionally, because first impressions matter. After each job, ask satisfied clients whether they would be happy to leave a review or recommend you.
Repeat and referred work is usually cheaper to win than new clients. Stay in touch with past customers at sensible intervals, for example with a seasonal reminder, and always follow data protection rules for marketing messages. Handling problems well, including complaints, can turn a difficult situation into a loyal customer.
Getting help as you grow
Free support for new businesses is available across the UK. In England, the Business Support Helpline can signpost you to advice and local growth hubs; in Scotland there is Business Gateway, in Wales Business Wales, and in Northern Ireland nibusinessinfo and Invest NI. HMRC also runs free webinars on topics such as Self Assessment and record-keeping.
As your business grows, you may need to think about employing staff, registering for VAT or changing to a limited company. You must register for VAT if your taxable turnover goes over the VAT threshold in a rolling 12-month period, so keep an eye on your turnover and check the current threshold on GOV.UK. In construction, the Construction Industry Scheme (CIS) has its own registration and deduction rules for contractors and subcontractors.
An accountant can save you time and help you avoid costly mistakes, particularly in your first year or when your circumstances change. Look for someone with a recognised professional qualification and ask what their fee covers. Even if you do your own books, a yearly check can be good value.
Key terms explained
- Sole trader
- A self-employed person who runs a business as an individual and is personally responsible for its debts.
- Self Assessment
- HMRC's system for collecting Income Tax from people whose income is not fully taxed at source, including the self-employed.
- UTR
- Unique Taxpayer Reference, a ten-digit number HMRC gives you when you register for Self Assessment.
- Trading allowance
- A small annual amount of trading income that can be received tax-free without registering, subject to rules.
- Payments on account
- Advance payments towards your next tax bill, usually due on 31 January and 31 July, if your bill is above a certain level.
- Allowable expenses
- Business costs you can deduct from your income when working out taxable profit.
- Cash basis
- A simple accounting method where you record income when received and expenses when paid, now the default for most sole traders.
- Making Tax Digital
- HMRC's programme requiring certain taxpayers to keep digital records and send updates using compatible software.
- Public liability insurance
- Insurance that covers claims from members of the public for injury or property damage caused by your business.
- Professional indemnity insurance
- Insurance that covers claims that your professional advice or services caused a client financial loss.
- CIS
- The Construction Industry Scheme, under which contractors deduct money from subcontractors' payments and pass it to HMRC.
Common mistakes to avoid
- Missing the 5 October registration deadline after your first tax year; register as soon as you start trading.
- Spending all the money you receive and having nothing left for the tax bill; move a percentage of every payment into a separate tax pot.
- Mixing business and personal spending in one account; open a separate account so records are clear.
- Starting work without a written quote and agreed payment terms; always confirm scope, price and payment dates in writing first.
- Pricing by the hour worked on site and forgetting admin, travel, tax and holidays; build these into your rate.
Frequently asked questions
Do I need to register as a sole trader if I only earn a little?
If your self-employed income is below the trading allowance in a tax year, you may not need to register, but there are exceptions. Check the current figure and rules on GOV.UK. Registering can still be useful if you want proof of self-employment or to pay voluntary National Insurance.
Can I be employed and self-employed at the same time?
Yes. Many people start a business alongside a job. Your employer's tax is handled through PAYE, and your self-employed income is declared through Self Assessment. Check your employment contract for any restrictions on outside work.
Do I need an accountant?
It is not a legal requirement, and many sole traders do their own tax returns. An accountant can help you set up good systems, claim the right expenses and avoid mistakes, particularly in your first year. Choose someone with a recognised professional qualification.
Does Making Tax Digital apply to me?
It depends on your qualifying income, and the threshold is being lowered in stages. Check the current threshold and dates on GOV.UK. If it applies, you will need compatible software and must send quarterly updates.
What insurance do I legally need?
If you employ staff, employers' liability insurance is usually compulsory. Other types, such as public liability or professional indemnity, are often not legally required but may be expected by clients or professional bodies. A broker can help you choose suitable cover.
When should I switch to a limited company?
There is no single answer, as it depends on your profits, plans and appetite for extra administration. An accountant can compare the costs and benefits for your situation. Many people review it once the business is established.