If you have ever asked yourself, how much does it cost to start a business, you are not alone. Starting your own business can feel exciting, liberating, and a little scary all at once. 

The thought of being your own boss, turning your ideas into reality, and building something from scratch is incredibly appealing. But before you dive in, it is important to have a clear understanding of the financial side. This is especially true if you plan to start as a Sole Trader in the UK.

How should you start?

The majority of self-employed people start off as a Sole Trader. It’s often the simplest and most flexible way to begin running your own business. It also tends to be cheaper than the cost of forming a Limited Company.

Let’s explore exactly what you need to know about how much it costs to start a business as a Sole Trader in the UK.
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Understanding the Sole Trader setup

Before we dive into costs to start a business, it helps to understand what a Sole Trader is. A Sole Trader is simply someone who runs their business as an individual. There’s no legal distinction between the individual and their business, which makes things straightforward. It means they’ll keep all the profits, but they’re also personally responsible for any losses. So before you start, it’s worth checking out our article which gives an honest look at Sole Trader vs Limited Company set up.

How do you start as a Sole Trader?

You don’t need to register a company, and you don’t have to file complicated accounts. What you will need to do is:

1. Register as self-employed with HMRC.
2. Keep records of your income and expenses for tax filing purposes.
3. Complete either a Self Assessment once a year, or comply with Making Tax Digital for Income Tax requirements once you pass the threshold.

Because it’s simple and low-cost to set up, the Sole Trader route is often the first step for many entrepreneurs in the UK.
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The cost to start a business as a Sole Trader

Now that we’ve fully covered what a Sole Trader is, let’s move on to how much it costs to start a business as one.

Registration costs: free to start

If you are asking how much does it cost to start a business, the good news is that registering as a Sole Trader with HMRC is free. Unlike forming a Limited Company which costs money, signing up as self-employed does not require any government fees.

The process

You simply need to:

• Visit the HMRC website.
• Sign up for Self Assessment as someone self-employed.
• Receive your Unique Taxpayer Reference (UTR) and start trading legally.

There is no official certificate, but once you are registered, you are legally allowed to operate your business.

Equipment and tools

Even if your business is home-based, you are likely to need some equipment or tools. The cost here depends on the type of business you want to start. 

Freelancers or consultants

Regardless of your business type, you’ll likely need a computer, phone, and reliable internet. 

Tradespeople

You’ll likely need specific tools, protective gear, or a vehicle at the least.

Retailers

Unless you operate on a dropshipping basis where you need a reliable dropshipping supplier and a website, you’ll need things like stock, shelving and a card payment terminal.

Whilst tools and equipment can vary depending on cost, it’s best to do your research up front so you can factor everything in. Buying second-hand or leasing can be a great way to reduce initial costs.

Insurance costs

Insurance is another essential consideration when asking how much does it cost to start a business as a Sole Trader. Even if you work from home, insurance protects you and your business from unexpected events.

The key types of insurance includes:

• Public liability insurance: Covers you if a client or member of the public is injured due to your business. Usually costs £50-£150 a year dependent on cover.
• Professional indemnity insurance: Covers losses if your advice or services cause a client financial harm. Typically costs £100 to £200 per year for small businesses. 
• Business equipment insurance: Protects valuable tools and devices against things like theft and damage.

Insurance may feel like an extra expense, but it can save you from far higher costs if something goes wrong.

Marketing and branding costs

Even the best product or service will struggle without customers, so marketing is an important consideration. Costs vary depending on your approach.

Website

A basic website can cost as little as £50 per year if you use a website builder. A professional website could cost you upwards of £500. Hosting and domain fees then typically add £50+ annually. While you can start a business without a website, you need to consider other ways for potential customers to find you.

Branding

Logos, business cards, and social media graphics may cost upwards of £50 depending on whether you do it yourself with software or hire a graphic designer.

Advertising 

Online advertising on Google or social media is optional, but it can significantly accelerate customer acquisition. Budgeting around £50-£350 per month if you decide to advertise early on and want to manage it yourself. Having a marketer do it on your behalf will likely attract additional costs.

Many Sole traders start marketing on a shoestring, using free social media channels and word of mouth before investing heavily in paid promotions.

Accounting and bookkeeping

Keeping accurate financial records is essential. As a Sole Trader, you could manage this yourself with easy accounting software (like Crunch!), but a proper accounting package makes life much simpler. After all, nobody starts their business as a Sole Trader to become a part-time accountant.

With Crunch, our Sole Trader accounting packages start from just £27 + VAT per month. This gives you smart software with an AI digital assistant to help manage expenses, a personal tax estimator, and unlimited access to Chartered accountants.

Working with an accountant is optional, but it can save you time and stress. Crunch’s packages are perfect for everyone—from those just starting out who need guidance on compliance rules, to seasoned business owners looking to maximise their tax efficiency.

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Business premises

Many Sole Traders start out working from home as it’s the most cost-effective option. Working from home removes the additional cost of rent, utilities, and commuting. But if you’re set on finding a workshop, office, or studio outside your home, you’ll need to factor these costs in. 

If you’re based in a smaller town you might be able to grab a bargain and only pay £100-£400 per month for shared office space/co-working spaces. However costs are likely to be far higher within city centres or larger cities like London.

A dedicated studio or workshop will likely cost closer to the £500 per month mark for smaller spaces outside city centres. If you’ve got your heart set on prime locations or a larger commercial space, you could easily be looking at four figures per month.

A lot of those starting their self-employed journey begin small and scale up as their business grows.

Licences and permits

Certain businesses need licences or permits. For example, a food business must register with their local council. Costs typically range from £50 to £200 depending on the licence. 

Other trades may need additional permits, so always check regulations to avoid fines or delays.

Taxes and National Insurance

Even though tax is not something you pay on day one, it absolutely needs to be factored in when thinking about how much it costs to start a business. One of the biggest shocks for new sole traders is their first tax bill, especially if they have not been setting money aside.

As a sole trader, you pay tax on your profits, not your total income. Profit is what is left after you deduct allowable business expenses from your earnings. Understanding that difference is crucial.

Let’s break it down properly.

How much Income Tax does a Sole Trader pay?

Every UK taxpayer gets a personal allowance, which for 2026/27 is £12,570. This means you do not pay Income Tax on profits up to that amount.

Anything above that is taxed in bands:

• 20% on profits between £12,571 and £50,270 (basic rate).
• 40% on profits between £50,271 and £125,140 (higher rate).
• 45% on profits over £125,140 (additional rate).
  

It is important to understand that you only pay the higher percentage on the portion that falls within that band, not on all your income.

Income Tax Example: £55,000 Profit (2026/27)

How this works:

• The first £12,570 is tax free.
• The next £37,700 is taxed at 20%.
• The remaining £4,730 is taxed at 40%.

This gives a total income tax bill of £9,432 on profits of £55,000, before National Insurance contributions.

Also remember that if you are employed and self-employed at the same time, your personal allowance may already be used against your salary. In that case, your Sole Trader profits may be taxed from the first pound.

What about National Insurance Contributions (NICs)?

NICs are separated from Income Tax and are calculated based on your profit. There are two main types of National Insurance that apply to Sole Traders: Class 2 and Class 4.

Class 2 National Insurance 

Class 2 NICs have changed in recent years. If your annual profits are above £12,570, you no longer need to pay Class 2 National Insurance. However, you will still automatically receive a National Insurance credit. This means your entitlement to certain state benefits, including the State Pension, is protected without you having to make a separate payment. You will however need to pay Class 4 NICs. 

If your profits are between £7,105 and £12,570 for 2026/27 (or £6,845 for 2025/26), you will also receive National Insurance credits automatically. You do not need to pay anything to maintain your record.

If your profits are below £7,105 for 2026/27 (or £6,845 for 2025/26), you will not receive credits automatically. In this case, you can choose to pay voluntary Class 2 National Insurance contributions to protect your entitlement to benefits such as the State Pension. 

If you are unsure whether you should pay voluntary contributions, it can be worth checking your National Insurance record through HMRC or speaking to an accountant for guidance.

Class 4 National Insurance

For the 2026/27 tax year, you’ll pay 6% on profits between £12,570 and £50,270 and 2% on profits above £50,270. Like Income Tax, it’s banded, you only pay the higher percentage on the portion of your profits that fall into that range.

Unlike Class 2, Class 4 contributions do not build additional benefit entitlements. They are simply part of the tax system for self-employed profits. However, they are mandatory if your profits exceed the threshold.

Payments on Account

This is often where new Sole Traders get caught out. If your tax bill is over £1,000 then HMRC will require you to make payments on account towards the following year’s tax. This means:

• You pay your current tax year’s bill in January.
• You also pay 50% of the next year’s estimated tax at the same time.
• Then you pay the remaining 50% in July.

So your first big tax bill can feel much larger than expected because you’re effectively paying towards the next year too.

For example:

If your first tax bill is £2,000, you will likely need to pay £3,000 in January. This covers the £2,000 owed for the Self Assessment as well as a £1,000 payment on account. 

It can be a nasty shock for Sole Traders who aren’t expecting it, so planning ahead and setting money aside from the beginning is crucial.

VAT considerations

While not all Sole Traders worry about VAT right away, it becomes relevant once your turnover exceeds the VAT registration threshold. For 2026/27 that’s £90,000. If you cross this threshold, you must register for VAT, and start charging it on your services or products. You will then need to submit VAT returns and pay any VAT owed. 

Even if you are below the threshold, some businesses choose to register voluntarily, especially if they mainly work with VAT-registered clients. This is because it can make your business appear more legitimate and more enticing to clients who claim back their VAT. Curious to see if there are other benefits to being VAT registered?

How much should I set aside as a Sole Trader?

A simple and practical rule of thumb is to set aside 30% of your profits into a separate savings account for tax and National Insurance. If your profits are higher, particularly into the higher rate band, you may need to set aside closer to 40-50%.

Many Sole Traders open a separate business bank account just for tax so they are not tempted to spend it. Treating tax like a regular outgoing rather than a surprise bill makes a huge difference to your stress levels.

Why does this all matter?

When people ask how much does it cost to start a business, they often focus on equipment, websites, and insurance. But tax is one of the largest ongoing costs you will face.

The good news is that you only pay tax if you are making a profit. If your business makes no profit in the early months, you will not owe Income Tax on it. That makes starting as a Sole Trader relatively low risk.

The key is understanding that:

• You pay tax on profit, not turnover.
• National Insurance is separate from income tax.
• Payments on account can make your first bill feel bigger.
• Planning ahead avoids panic later.

Once you understand how the system works, it becomes much less intimidating. It is simply part of running a successful business.
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Typical startup costs for a Sole Trader

To give you a clearer overview of how much it costs to start a business as a Sole Trader, here is a rough guide:

Starting a bare-bones Sole Trader business could cost under £500, while a more prepared, professional setup could range from £1,500 to £5,000.

Tips to reduce startup costs

If you are worried about how much does it cost to start a business, there are practical ways to save money:

1. Start from home where possible.
2. Buy second-hand equipment or use existing ones.
3. Use free software until you need paid versions.
4. Market organically through social media and word-of-mouth.
5. Consider bundled insurance packages for Sole Traders.
6. Keep financial records from day one to reduce accountancy costs.

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When to scale up

As your business grows, you may need to invest more in equipment, staff, or premises. At this stage, costs rise, but ideally, your income covers them. Many Sole Traders start small and gradually scale as they gain clients and confidence.

Some eventually incorporate as a Limited Company for tax benefits or legal protection, but this is a separate consideration with its own costs.
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The real investment is preparation

Starting a business as a Sole Trader does not have to cost a fortune. In fact, for many people, the barrier to entry is far lower than they expect. The structure is simple, the setup is straightforward, and you can grow at a pace that suits you.

What really makes the difference is not just how much money you invest, but how well you prepare. Understanding your likely expenses, knowing how tax works, and choosing the right tools from the start, like Crunch, can save you a great deal of stress later on. A bit of organisation now can prevent costly mistakes in the future.

Do your research, plan properly, and you may find that the answer to how much does it cost to start a business as a Sole Trader is far more manageable than you imagined. For many, it is one of the most accessible ways to turn an idea into income and take that first step towards working for yourself.