How to Register as a Sole Trader in the UK (2026)

To register as a sole trader, a person normally needs to register for Self Assessment with HM Revenue and Customs, provide a National Insurance number and business details, and wait for HMRC to issue or confirm a Unique Taxpayer Reference.

Registration is completed through the official HMRC sole-trader registration service. There is no fee for registering directly with HMRC.

A person can start working as a sole trader before completing the registration. However, they must keep accurate records from the date trading begins and register by the relevant deadline if their gross trading income exceeds the current reporting threshold.

Quick answer: Register for Self Assessment as a sole trader through HMRC, provide the business start date and personal details, receive a ten-digit UTR, maintain business records and submit the required tax return by the deadline.

What Does Registering as a Sole Trader Mean?

What Does Registering as a Sole Trader Mean

Registering as a sole trader tells HMRC that an individual is running a business personally and may need to report business income through Self Assessment.

The individual and the business are not separate legal entities. The owner keeps the profits after tax but is also personally responsible for business debts, contracts and legal obligations.

A sole trader does not incorporate a company and does not usually register the business with Companies House. Instead, the person registers for Self Assessment with HMRC.

Anyone uncertain about the terminology can read the explanation of whether a sole trader is the same as being self-employed. Self-employed describes a working or tax status, while sole trader describes a particular business structure.

Who Needs to Register as a Sole Trader?

A person must normally register as a sole trader where:

they are carrying on a trade or business personally;
their annual gross trading income exceeds £1,000;
they have not formed a limited company or partnership; and
the income is not already taxed entirely as employment income through PAYE.

Gross trading income means the total amount received before deducting equipment, travel, stock, platform fees or other business expenses.

For example, someone who receives £1,400 from freelance work and spends £700 on business costs has gross trading income of £1,400. Registration may still be required even though the resulting profit is only £700.

The £1,000 test is therefore based on turnover or receipts, not profit.

Can Someone Start Trading Before Registering?

Yes. A person can begin operating as a sole trader immediately. They do not have to wait for HMRC to approve the business before accepting customers, issuing invoices or receiving payments.

However, records should be kept from the first day of trading. These may include:

invoices issued to customers;
receipts and purchase records;
bank and payment-platform statements;
mileage records;
details of stock and materials;
records of business equipment;
refunds and cancellations; and
evidence supporting business expenses.

Starting immediately does not remove the obligation to register later. Where the registration threshold is exceeded, the individual must tell HMRC by the applicable deadline.

When Must a Sole Trader Register With HMRC?

When Must a Sole Trader Register With HMRC

The usual deadline is 5 October following the end of the tax year in which the person first became required to submit a tax return.

The UK tax year runs from 6 April to the following 5 April.

When the income was earned	Registration deadline	Online tax return deadline	Payment deadline
6 April 2025 to 5 April 2026	5 October 2026	31 January 2027	31 January 2027
6 April 2026 to 5 April 2027	5 October 2027	31 January 2028	31 January 2028

For example, if a photographer started trading in June 2026 and earned more than £1,000 before 5 April 2027, the photographer would normally need to register by 5 October 2027.

Registration does not have to be delayed until October. Registering earlier gives the business owner more time to receive a UTR, organise records and prepare for the first tax bill.

People earning money alongside employment can use the detailed guide on how to declare side-hustle income to HMRC to understand the interaction between PAYE and Self Assessment.

Is the Sole-Trader Registration Threshold Still £1,000?

Yes. As of 10 July 2026, the current HMRC rule is that a person normally needs to register where gross trading income exceeds £1,000 in a tax year.

The government announced an intention in March 2025 to increase the Income Tax Self Assessment reporting threshold from £1,000 to £3,000 gross. However, the announcement did not immediately change the existing registration rule.

Until a commencement date and updated rules take effect, sole traders should continue using the £1,000 threshold shown in current HMRC guidance.

The proposed £3,000 reporting threshold should also not be confused with the trading allowance. A higher reporting threshold would not necessarily make the first £3,000 of profit tax-free.

Does Someone Earning £1,000 or Less Need to Register?

A person with qualifying gross trading income of £1,000 or less will not normally need to register solely because of that income.

This is due to the trading allowance, which can provide full relief on up to £1,000 of qualifying trading and miscellaneous income.

Registration may still be appropriate or required where the person:

wants to make voluntary Class 2 National Insurance contributions;
needs evidence of self-employment;
must register under the Construction Industry Scheme;
cannot claim the trading allowance because an exclusion applies;
has other income requiring a Self Assessment return; or
has been instructed by HMRC to submit a return.

The rules are examined more closely in the guide to the £1,000 trading allowance for UK side hustles.

What Information Is Needed to Register as a Sole Trader?

Before beginning the HMRC registration, the person should have the following information available:

Information	Why HMRC may require it
National Insurance number	Identifies the individual’s tax and National Insurance record
Full legal name	Connects the business registration to the taxpayer
Date of birth	Supports identity verification
Home address	Used for the taxpayer’s HMRC record
Email address and phone number	Used for account access and communication
Business start date	Establishes when the self-employment began
Nature of the business	Describes the trade, profession or service
Trading name	Needed where the business uses a name other than the owner’s name
Business address	Identifies the place from which the business operates
Government Gateway details	Used to access HMRC’s online services

A National Insurance number is normally required before registering for Self Assessment as a sole trader. Anyone without one should follow the official process to apply for a National Insurance number.

HMRC may also ask questions based on information already held about the person. This could include details from a passport, driving licence, P60, payslip or credit record.

How to Register as a Sole Trader Step by Step

Step 1: Confirm That Sole-Trader Status Is Appropriate

Before registering, the individual should confirm that the business is genuinely being operated independently.

Typical signs of self-employment include:

setting prices or negotiating fees;
deciding how and when work is completed;
working for several customers;
issuing invoices;
providing equipment or materials;
accepting financial risk; and
correcting unsatisfactory work at personal cost.

A contract that calls someone self-employed does not decide their status on its own. Actual working arrangements matter.

Someone who works fixed hours under close supervision and cannot send a substitute could be an employee or worker rather than genuinely self-employed. HMRC’s Check Employment Status for Tax service can help assess a particular engagement.

Step 2: Check Whether Registration Is Required

The person should calculate total gross trading income received during the tax year.

Income from multiple small businesses or side hustles generally needs to be considered together. The individual does not receive a separate £1,000 trading allowance for every activity.

For example:

£600 from tutoring;
£350 from dog walking; and
£300 from freelance editing

would produce total gross trading income of £1,250. The combined amount exceeds £1,000 even though no individual activity does.

The distinction between employment income and independent earnings is covered in the comparison of a side hustle and a second job in the UK.

Step 3: Choose a Legal Trading Name

A sole trader can operate under their own name or choose a separate business name.

For example, James Wilson could trade as:

James Wilson;
James Wilson Plumbing; or
Northside Plumbing Services.

A sole-trader business name must not:

include “Limited”, “Ltd”, “LLP” or “plc”;
be offensive;
use certain sensitive words without permission;
falsely suggest a government connection; or
infringe an existing trade mark.

The owner’s own name and the business name must appear on official paperwork such as invoices and business letters. HMRC explains the relevant sole-trader business naming rules.

A sole trader does not gain exclusive rights to a name merely by using it. Anyone building a significant brand should consider checking existing company names, domain names and registered trade marks.

Step 4: Create or Access an HMRC Online Account

The person will need to sign in to HMRC’s online services. Someone without sign-in details can create an account during the process.

Government Gateway credentials should be stored securely. They should not be shared casually with bookkeepers, friends or unregulated advisers.

An accountant or authorised tax agent can deal with HMRC on the person’s behalf, but the taxpayer remains responsible for ensuring that the information submitted is accurate.

Step 5: Register for Self Assessment as a Sole Trader

The person should use HMRC’s online sole-trader registration service.

The service asks questions about the taxpayer’s circumstances and directs them to the appropriate registration route.

The person will normally need to provide:

personal information;
National Insurance number;
date self-employment began;
type of work or trade;
business name, if one is used; and
business contact details.

Registration directly through HMRC is free. A third-party service may charge for completing the process, but payment is not required to register with HMRC itself.

Step 6: Follow the Correct Route If Already Registered for Self Assessment

Someone who already submits tax returns for another reason may still need to register specifically as a sole trader.

For example, a landlord who already has a UTR and later starts a consulting business must tell HMRC about the new self-employment. This ensures the sole-trader activity and relevant National Insurance position are added to the tax record.

A person who was previously self-employed but later stopped may need to reactivate the Self Assessment account rather than creating a completely new record.

HMRC’s registration tool determines the appropriate process based on the answers provided.

Step 7: Receive the Unique Taxpayer Reference

After registration, HMRC issues or confirms a Unique Taxpayer Reference, commonly called a UTR.

A UTR:

contains ten digits;
identifies the taxpayer within Self Assessment;
is different from a National Insurance number;
remains associated with the individual; and
may be required by an accountant or contractor.

A new UTR usually arrives by post around 15 days after registration, although it can take longer for someone living overseas.

The number may later be found in the taxpayer’s Personal Tax Account, HMRC app, tax returns and Self Assessment correspondence.

A UTR is confidential tax information. It should only be given to organisations or advisers with a legitimate reason to request it.

Step 8: Check That Online Self Assessment Is Available

After registration has been processed, the taxpayer should sign in to the HMRC account and check that Self Assessment appears correctly.

The person should confirm:

the UTR has been issued;
the business start date is correct;
HMRC has the current address;
the self-employment is active; and
the correct tax return will be available after the tax year ends.

Any registration confirmation, reference numbers or correspondence should be stored securely.

Step 9: Begin Keeping Complete Business Records

Registration does not remove the need for proper records.

A sole trader must normally keep evidence of:

business income;
allowable expenses;
sales invoices;
supplier invoices;
bank transactions;
cash receipts;
mileage and travel;
stock and work in progress;
grants or other business payments; and
money introduced to or withdrawn from the business.

HMRC does not normally require every receipt to be uploaded with the tax return. However, the records must be available if HMRC checks the figures.

Self-employed business records generally need to be retained for at least five years after the 31 January submission deadline for the relevant tax year. The full requirements are explained in HMRC’s guidance on records for self-employed businesses.

Step 10: Prepare for the First Tax Return and Payment

A sole trader reports business income and expenses through Self Assessment.

For the 2025/26 tax year:

paper returns are normally due by 31 October 2026;
online returns are normally due by 31 January 2027; and
tax due is normally payable by 31 January 2027.

The tax return can be submitted before January. Filing early does not require early payment, but it allows the sole trader to see the bill and budget for it.

The broader reporting process is explained in the article covering the UK side-hustle tax-free threshold and HMRC rules.

How Much Does It Cost to Register as a Sole Trader?

Registering directly with HMRC is free.

A new business may nevertheless face optional or activity-specific costs.

Potential cost	Is it compulsory?
HMRC sole-trader registration	No charge
Accountant or tax adviser	Optional
Bookkeeping software	Optional for many traders, but compatible software may be required under Making Tax Digital
Business bank account	Not generally a legal requirement for an ordinary sole trader
Public liability insurance	Depends on risk, contracts and industry
Employers’ liability insurance	Normally required where the sole trader employs staff, subject to exceptions
Professional licence	Required only for regulated activities
Trade mark registration	Optional
VAT registration	No HMRC registration fee, although professional assistance may cost money

A personal bank account may not permit commercial use under the bank’s terms. A separate business account can also make record-keeping, cash-flow management and tax preparation easier.

Does Registering as a Sole Trader Mean Tax Is Immediately Due?

Does Registering as a Sole Trader Mean Tax Is Immediately Due

No. Registration creates a reporting obligation, but it does not automatically mean that Income Tax will be payable.

Tax is generally calculated on taxable profit, not gross turnover.

Taxable profit broadly equals:

Business income minus allowable expenses or the applicable trading allowance.

Whether tax is payable depends on:

total business profit;
employment income;
pension or property income;
available allowances;
tax residence;
the part of the UK in which the person lives; and
other taxable income or reliefs.

For 2026/27, the standard Personal Allowance is £12,570, subject to eligibility and reductions for higher incomes.

A sole trader with £8,000 of profit and no other taxable income may have no Income Tax to pay. An employed person already earning £35,000 could pay tax on most or all of the same £8,000 business profit because their employment income has already used the Personal Allowance.

What National Insurance Does a Sole Trader Pay in 2026/27?

The self-employed National Insurance position for 2026/27 includes:

Rule	2026/27 amount
Profits at which Class 2 is treated as paid	£7,105 or more
Class 4 starting threshold	Profits above £12,570
Main Class 4 rate	6%
Upper Class 4 threshold	£50,270
Class 4 rate above £50,270	2%
Voluntary Class 2 rate	£3.65 per week

Where profits are at least £7,105, Class 2 contributions are generally treated as paid to help protect the person’s National Insurance record. An actual Class 2 payment is not normally required at that level.

Someone with lower profits may be able to make voluntary contributions. This can be important where the person needs to protect entitlement to the State Pension or contributory benefits.

Could the First Self Assessment Bill Be Higher Than Expected?

Yes. A first bill can include both the tax due for the completed year and a payment towards the following year.

These advance payments are called payments on account. They normally apply unless:

the previous year’s qualifying Self Assessment tax was below £1,000; or
more than 80% of the person’s tax was collected outside Self Assessment.

For example, if the qualifying first-year tax bill is £3,000, the amount due on 31 January could include:

£3,000 for the completed tax year; and
£1,500 as the first payment on account for the next year.

A second £1,500 payment would normally be due on 31 July.

This is why new sole traders should set aside part of every payment rather than waiting until the filing deadline to consider tax.

Does a New Sole Trader Need to Use Making Tax Digital?

Making Tax Digital for Income Tax became mandatory for the first qualifying group on 6 April 2026.

A sole trader will need to use the system where the relevant conditions are met and qualifying self-employment and property income exceeds:

Income measured in	Qualifying income	MTD start date
2024/25 tax year	More than £50,000	6 April 2026
2025/26 tax year	More than £30,000	6 April 2027
2026/27 tax year	More than £20,000	6 April 2028

Qualifying income is broadly gross income from self-employment and property before deducting expenses.

A person does not normally begin mandatory Making Tax Digital before submitting their first Self Assessment return. HMRC uses information from the submitted return to assess whether the relevant threshold has been exceeded.

Someone within the rules must generally:

maintain digital records;
use compatible software;
submit quarterly updates;
add other income and gains;
submit the annual tax return; and
pay tax through the normal Self Assessment process.

Sole traders approaching a threshold should use HMRC’s service to check when Making Tax Digital for Income Tax applies.

Does a Sole Trader Need to Register for VAT?

Sole-trader registration and VAT registration are separate processes.

A business must normally register for VAT where taxable turnover exceeds £90,000 over a rolling 12-month period. It may also need to register where it expects to exceed the threshold within the next 30 days.

The VAT threshold is not assessed solely by looking at the standard tax year or annual accounts. It must be monitored on a rolling basis.

Voluntary registration below the threshold is possible and may be useful for some businesses, particularly where customers are VAT-registered or the business incurs significant VAT on costs. It can also create additional pricing and administrative obligations.

The practical considerations are covered in the guide to VAT registration for UK side hustles.

Does a Sole Trader Need to Register With Companies House?

No. A sole trader does not normally register the business with Companies House.

Companies House registration is associated with incorporated entities such as:

private limited companies;
public limited companies; and
limited liability partnerships.

A sole trader registers with HMRC for Self Assessment instead.

The absence of Companies House registration does not make the activity informal or exempt from business rules. Sole traders may still need tax registration, licences, insurance, data protection compliance, VAT registration or employer registration.

Can Someone Be Employed and Register as a Sole Trader?

Yes. A person can be employed and self-employed during the same tax year.

For example, an office employee may also operate as a sole-trader photographer at weekends. The salary continues through PAYE, while the photography income and expenses are reported through Self Assessment.

HMRC considers the person’s combined taxable income when calculating the final liability.

The employer does not normally register the side business.

However, the employee should check the employment contract for restrictions concerning:

competing businesses;
conflicts of interest;
confidential information;
intellectual property;
use of employer equipment; and
working-time obligations.

Can an Online Seller Register as a Sole Trader?

Yes, where the online selling activity amounts to trading.

Someone who occasionally sells unwanted personal belongings is not automatically running a business.

However, a person may be trading where they:

buy items specifically to resell;
manufacture goods for sale;
sell regularly with the intention of earning profit;
provide services through an online platform; or
receive money, goods or services for creating promotional content.

Income from marketplaces, delivery platforms, content platforms and freelance websites should be considered alongside income from other trading activities.

The complete guide to UK side hustles in 2026 explains how HMRC may distinguish casual sales from commercial activity.

What Are the Most Common Registration Mistakes?

What Are the Most Common Registration Mistakes

Using Profit Instead of Gross Income

The £1,000 threshold is based on gross qualifying income before expenses. A business can make little or no profit and still need to register.

Assuming Each Business Gets a Separate Allowance

Income from several trades may need to be combined when assessing the trading allowance.

Waiting Until the Tax Return Deadline to Register

The registration deadline is normally 5 October, not 31 January. Leaving registration until January may delay access to Self Assessment.

Registering as a Limited Company by Mistake

A sole trader does not need to incorporate at Companies House. Incorporation creates a separate company with different tax and filing obligations.

Registering Twice

Someone who already has a UTR should use HMRC’s questions to add or reactivate self-employment rather than attempting to create an unrelated taxpayer record.

Failing to Keep Early Records

Business records are required from the beginning of trading, not only from the date HMRC registration is completed.

Assuming Registration Means No Further Action

After registration, the person may need to submit annual returns, pay tax, monitor VAT turnover and comply with Making Tax Digital.

Not Budgeting for Payments on Account

The first January payment can include an advance payment towards the next tax year.

Practical Registration Examples

Example 1: A Designer Earning £750

A full-time employee earns £750 from occasional freelance design work during 2026/27.

If the income qualifies for the trading allowance and no exception applies, registration would not normally be required solely because of the £750.

The designer should still retain records showing how much was received.

Example 2: A Tutor Earning £1,400 With £900 of Costs

A tutor receives £1,400 and incurs £900 of business expenses.

The tutor’s gross trading income is £1,400, even though the potential profit is only £500. The gross income exceeds £1,000, so the tutor will normally need to register.

Example 3: Several Small Side Hustles

A person earns £500 from dog walking, £400 from online content and £350 from delivery work.

Total gross trading income is £1,250. The activities generally need to be considered together when assessing the £1,000 threshold.

Example 4: An Existing Landlord Starts Consulting

A landlord already submits Self Assessment returns and has a UTR. During 2026/27, the landlord starts an independent consulting business.

The individual should tell HMRC about the new sole-trader activity. Having an existing UTR does not automatically register the consulting business correctly.

Example 5: A New Business Earning £55,000

A person starts a sole-trader business in May 2026 and receives £55,000 during 2026/27.

The individual needs to register for Self Assessment and may later fall within Making Tax Digital. However, mandatory MTD would not normally begin until after the first return has been submitted and HMRC has assessed qualifying income against the applicable threshold.

Final Answer

Registering as a sole trader involves telling HMRC that an individual has started a personally owned business and registering for Self Assessment.

A person can begin trading before registration, but should register where gross trading income exceeds £1,000 and complete the process by 5 October following the end of the relevant tax year.

The main steps are to confirm that sole-trader status is appropriate, gather a National Insurance number and business information, complete HMRC’s online registration, receive a UTR, maintain accurate records and submit the first tax return by the deadline.

Registration itself is free. The larger responsibilities arise afterwards: tracking income and expenses, budgeting for tax and National Insurance, monitoring VAT turnover and checking whether Making Tax Digital applies.

Frequently Asked Questions

How does someone register as a sole trader?

The individual registers for Self Assessment as a sole trader through HMRC, provides a National Insurance number and business details, and receives or confirms a Unique Taxpayer Reference.

Is it free to register as a sole trader?

Yes. Registering directly with HMRC is free. Accountants and third-party registration services may charge for assistance.

How long does sole-trader registration take?

The online application itself may be completed relatively quickly. A new UTR usually arrives by post around 15 days after registration, although overseas applications can take longer.

Can someone register as a sole trader before earning money?

Yes. A person can register before exceeding £1,000 or before a tax return becomes compulsory. However, they should only register where there is a genuine business activity or a valid reason for early registration.

Can someone start trading before registering?

Yes. Trading can begin immediately, but accurate records must be kept and HMRC must be notified by the relevant deadline where registration is required.

Does a sole trader need a National Insurance number?

A National Insurance number is normally needed to register for Self Assessment as a sole trader.

Does a sole trader need a UTR before registering?

No. HMRC issues a UTR after a new Self Assessment registration. Someone who has previously registered may already have one.

Does a sole trader need a business name?

No. The person can trade under their own legal name. A separate trading name is optional.

Does a sole trader need a business address?

HMRC will require address information. A person operating from home may use the relevant home or business address, but should consider privacy implications when publishing the address on invoices or websites.

Is a business bank account compulsory?

A separate business bank account is not generally a statutory requirement for an ordinary sole trader. However, the terms of a personal account may restrict business use.

Does a sole trader need an accountant?

No. A sole trader can register, maintain records and submit a tax return personally. Professional support may be helpful where the business has complex expenses, VAT, employees, foreign income or Making Tax Digital obligations.

What happens if a sole trader registers late?

Late registration can lead to a failure-to-notify penalty, particularly where tax remains unpaid after the payment deadline. The person should register as soon as the omission is discovered rather than waiting for HMRC to make contact.

Can a sole trader employ staff?

Yes. Sole refers to the number of business owners, not employees. A sole trader hiring staff may need to register as an employer, operate PAYE, provide workplace pensions and arrange employers’ liability insurance.

Does a sole trader pay tax on turnover?

Income Tax and Class 4 National Insurance are generally calculated on taxable profit. However, the £1,000 registration threshold and £90,000 VAT threshold are based on forms of gross income or turnover.

Can a sole trader later form a limited company?

Yes. A sole trader can incorporate a company later, but the change creates a separate legal entity. Contracts, assets, tax registrations, VAT, bank arrangements and accounting records may need to be transferred or updated.

About Daniel Brooks

A seasoned editorial professional with extensive experience in business reporting, market analysis, and strategic content development. Dedicated to delivering accurate, insightful, and well-researched coverage that helps readers understand complex topics and emerging trends.

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