Learning how to start a small business in 2026 does not need to feel overwhelming. This guide walks through the practical steps in order, from testing your idea to finding your first customers, with the UK rules stated plainly and a small business checklist you can follow. Whether you are planning a side business or your first shop, the order below keeps the legal and financial side simple.
Test the idea before you spend
A common reason new businesses struggle is that the founder builds something nobody wants. Before you register anything, spend a few weeks checking demand.
- Talk to at least ten potential customers. Ask what they currently do about the problem you solve, what they pay, and what frustrates them.
- Look at who already sells something similar. Note their prices, how they describe the offer, and where they find customers.
- Try to get a first sale or a pre-order. Even a small deposit from one person proves more than a hundred friendly opinions.
- If you cannot find anyone willing to pay, change the offer or the audience before you spend money on a website or stock.
This stage costs little but saves you from building the wrong thing.
Write a one-page plan
You do not need a 40-page business plan. One page is enough to keep you focused.
Write down:
- Who the business is for, in one sentence.
- What you sell, including the specific outcome.
- Your price and why that price makes sense.
- How customers will find you, such as local search, word of mouth, or social media.
- Your main costs, including stock, software, insurance, and your own time.
- What you need to earn each month to cover costs and pay yourself.
Positioning your business clearly at this stage makes every later decision easier. If you cannot explain who it is for and why they should buy, customers will not work it out either.
Choose a structure: sole trader or limited company
In the UK, the two most common structures are sole trader and limited company. The choice affects tax, paperwork, and personal liability.
- A sole trader is the simplest option. You keep the profits after tax, but you are personally responsible for business debts.
- A limited company is a separate legal entity. It can feel more formal and often suits businesses with higher risk, larger turnover, or plans to bring in investors.
- You can start as a sole trader and incorporate later if the business grows.
The UK facts are these. Registering a limited company online with Companies House costs £100, and directors need to verify their identity with GOV.UK One Login to get a personal code. Sole traders must register for Self Assessment if they earn more than £1,000 in a tax year, which runs from 6 April to 5 April. An accountant can confirm the right structure for your situation, especially if you have a day job or expect rapid growth.
Register and sort out tax
Once you know your structure, register with the right authority.
- Sole traders tell HMRC they need to report by 5 October after the end of the tax year in which they started, or they could get a penalty.
- Limited companies register with Companies House and then with HMRC for Corporation Tax.
- You must register for VAT if your taxable turnover over the last 12 months goes over £90,000, or you expect it to go over £90,000 in the next 30 days. You can choose to register earlier if it helps you reclaim VAT on purchases.
Making Tax Digital for Income Tax is changing the way sole traders and landlords report. From 6 April 2026, those with qualifying income over £50,000 have had to use it. The threshold falls to £30,000 from 6 April 2027 and £20,000 from 6 April 2028. If you are outside the UK, check your own government's guidance, because these rules apply in the UK only.
Money basics from day one
Separate your business money from your personal money before the first sale.
- Open a separate business bank account. It makes bookkeeping far simpler and looks more professional to customers.
- Keep a simple record of every sale and every expense. A spreadsheet works at first, but a tool that connects to your bank or accounting software saves time later.
- Store receipts digitally. Photograph paper receipts and keep them in one folder.
- Set aside money for tax as you earn, ideally in a separate savings account. How much depends on your income and structure, so ask an accountant for a figure.
Managing cash flow early prevents the classic problem of a profitable business running out of money. Even a basic habit of reviewing what is coming in and going out each week keeps you ahead of surprises.
Name and protection
Your business name needs to be free to use and easy to find.
- Check Companies House for an existing registered name if you plan to incorporate.
- Check that the domain name and social handles are available. Consistency across your website, email, and social profiles builds trust.
- Consider insurance before you start trading. Public liability covers injury or damage to third parties. Professional indemnity covers advice or services. Employer's liability insurance is usually a legal requirement in the UK once you take on staff.
- Put simple terms and conditions in place for customers, and be clear about refunds, delivery, and payment terms.
- If you collect personal data, such as names and email addresses, follow data protection rules. A GDPR checklist for small businesses helps you cover consent, storage, and the right to be forgotten without hiring a lawyer.
Get online
You do not need a complex website to start. You need a clear place where customers can find you, learn what you sell, and contact you.
- A simple one-page website with your offer, price, and a way to buy or book is enough.
- If you serve a local area, set up a Google Business Profile. It helps you appear in local search and map results.
- Choose one or two social platforms where your customers already spend time, not every platform at once.
The goal is to be findable and credible, not to win design awards.
Find your first customers
Your first customers rarely come from advertising. They come from people who already know you or who see you in a local context.
- Tell your own network what you are doing and ask for introductions.
- Join local business groups, community pages, or trade associations where your customers gather.
- Offer a launch discount or a simple bonus for the first ten buyers.
- Ask every early customer for a review or a short testimonial, then use those words on your website and social profiles.
Early reviews are more valuable than any ad campaign, because they give strangers a reason to trust you.
Use AI for the admin and marketing you would otherwise do late at night
Running a small business means doing jobs you have never done before, often after hours. General AI assistants help with drafting emails, researching competitors, and turning rough notes into a plan. They are useful, but they are generalists.
Ergora is an AI business suite built for small businesses and lean teams. Instead of juggling ten separate tools, you get specialist AI packs in one workspace, connected to the tools you already use. The Solo plan is one seat and one project, and you add only the packs you need. For example, the Sales pack includes a simple CRM with a pipeline board, Prospect Research, and Call Prep. The Finance pack connects to Xero for invoices, expenses, and a finance calendar of tax deadlines. The Legal pack has a Contract Scanner and a mutual NDA template you can send for e-signature. Campaign Planner, Content Calendar, and Email Sequence Writer help with marketing without hiring a marketer.
If you want to compare Ergora with general assistants, this guide to AI tools for small business in 2026 explains where a specialist suite helps most. And if you are already using a general assistant, these AI prompts for small business owners give you twelve practical starting points. Seat plans start at $99 a month, specialist packs are added from $59 a month each, and the only offer is 50% off the first month plus a 30-day money-back guarantee. There is no free plan or free trial, so check the Ergora pricing page before you commit.
How to start a small business: a checklist and timeline
Use this table as your small business checklist. Work through it in order, but do not wait for perfection before you launch.
| Step | What to do | When |
|---|---|---|
| Test the idea | Talk to ten potential customers, get a pre-order or first sale | Before launch |
| Write a one-page plan | Define audience, offer, price, costs, and income target | Before launch |
| Choose a structure | Decide sole trader or limited company, ask an accountant | Before launch |
| Register | Register with HMRC or Companies House, sort VAT if needed | Before launch |
| Set up money basics | Open a business bank account, start simple bookkeeping | Before launch |
| Protect the business | Check name, get insurance, draft terms, follow GDPR | Before launch |
| Get online | Publish a simple website, set up Google Business Profile | At launch |
| Find first customers | Use your network, launch offer, collect early reviews | At launch |
| Build habits | Review cash flow weekly, set aside tax, use AI for admin | First three months |
The first three months are about momentum, not polish. Fix what breaks, keep talking to customers, and let the systems catch up with the sales.
Start lean, then add specialist help only when a job repeats
The takeaway is simple. Test the idea, register correctly, keep money separate, and find your first customers before you spend on anything fancy. Once a job repeats, such as chasing invoices, writing follow-up emails, or managing a pipeline, use specialist AI tools rather than doing everything yourself at midnight. Ergora gives a new business that help in one workspace, starting with the Solo plan, so you can add packs as the business grows instead of hiring before you can afford it.
To work out a price that covers your costs, see markup vs margin explained.
For the full version of your plan, see how to write a business plan.
Frequently asked questions
How much does it cost to start a small business in the UK?
The only fixed government fee mentioned in this guide is the £100 cost to register a limited company online with Companies House. All other costs vary depending on your structure, insurance, website, stock, and software. A sole trader can start with almost no registration fee, but you still need to tell HMRC if your income passes £1,000 in a tax year.
Should I start as a sole trader or a limited company?
Start as a sole trader if you want the simplest setup, are testing a low-risk idea, and do not mind being personally responsible for business debts. Choose a limited company if you expect higher risk, want a separate legal entity, or plan to bring in investors. An accountant can confirm the right choice for your income and goals.
Do I need to register my business with HMRC?
Sole traders must register for Self Assessment if they earn more than £1,000 in a tax year, which runs from 6 April to 5 April. They must tell HMRC by 5 October after the end of that tax year. Limited companies register with Companies House and then with HMRC for Corporation Tax. If you earn less than £1,000 from self-employment, you may not need to register, but check the current guidance.
When do I need to register for VAT?
You must register for VAT if your taxable turnover over the last 12 months goes over £90,000, or you expect it to go over £90,000 in the next 30 days. You can choose to register earlier if it helps you reclaim VAT on purchases. The threshold applies to taxable turnover, not profit, so keep an eye on your total sales.
What is the first step to starting a small business?
The first step is to test the idea before you spend money. Talk to at least ten potential customers, look at who already sells something similar, and try to get a first sale or pre-order. If nobody will pay, change the offer or audience before registering, building a website, or buying stock.
Can I start a business while I am employed?
Yes, many people start a side business while employed, but check your employment contract first. Some contracts restrict outside work, especially in the same industry or during working hours. Also check whether your employer owns intellectual property you create, and keep your business activities clearly separate from your job.