Starting a business in Northern Ireland: the steps and the support

The steps are to test the idea, write a plan, choose a legal structure, register with the right body, and put your tax, insurance and finance in place before you trade. The official nibusinessinfo.co.uk ten-step start-up guide, run by Invest Northern Ireland, follows much the same path.

1. Test the idea. Find out whether customers will pay, and whether you are ready to work for yourself.
2. Write a plan. Set out what you sell, who buys it and what it costs to get going. Our guide to writing a business plan covers what lenders look for.
3. Work out how much money you need. Count set-up costs such as premises, insurance and stock, and allow for your own living costs while the business builds.
4. Choose a structure and a name. This decides how you register, how you are taxed and what you are personally liable for.
5. Register. Sole traders register with HMRC; companies register with Companies House.
6. Sort tax, licences and insurance. Check whether VAT, PAYE or a licence applies to your trade.
7. Decide how to fund it. Savings, grants, a start-up loan or other finance, in that order of cost and risk for most people.

The legal registration process is the same UK-wide, but the support around it is local. HMRC and Companies House run the same sole trader and company registration wherever you are, so the main differences are the advice, funding and helplines you can use.

GOV.UK’s business support page points Northern Ireland businesses to nibusinessinfo.co.uk and to the Invest Northern Ireland helpline on 0800 181 4422, open Monday to Friday, 9:30am to 4:30pm except bank holidays. Scotland, Wales and England each have their own equivalents.

One practical consequence for companies: the registered office address must be a physical UK address in the same country your company is registered in, so a company registered in Northern Ireland needs a registered office address here.

Most start-ups choose between a sole trader and a limited company, and the deciding factors are liability, paperwork and how you plan to raise money. A partnership is the third common route when two or more people start together.

Our guides to sole trader versus limited company and how to set up a limited company go through the trade-offs. The structure also affects borrowing, so see how personal guarantees work before you sign.

You register as a sole trader with HMRC for Self Assessment, or as a company with Companies House, and the costs are set by those UK bodies rather than locally.

• Sole trader: you can start trading straight away without registering, but you must register for Self Assessment if you earn more than £1,000 in a tax year (6 April to 5 April). HMRC’s deadline is 5 October after the end of the tax year in which you needed to register. Registering sets up your UTR number.
• Limited company: registering online with Companies House costs £100 and the company is usually registered within 24 hours. A postal application takes 8 to 10 days and costs £124, and a name without ‘limited’ in it must be registered by post.
• Partnership: the partners register with HMRC, and a limited partnership also registers with Companies House.

Fees can change, so confirm the current amount on GOV.UK before you pay. If you are not sure which route suits you, nibusinessinfo.co.uk has a checklist for setting up as a sole trader and step-by-step guides for each structure.

You must register for VAT when your taxable turnover for the last 12 months goes over £90,000, or when you expect it to go over that in the next 30 days. That is the position on GOV.UK as of October 2026.

You can register earlier if you choose, for example to reclaim VAT on business expenses. GOV.UK also notes a rule specific to Northern Ireland: if you sell only VAT-exempt or out-of-scope goods and services but buy goods worth more than £90,000 in any 12 months from EU VAT-registered suppliers for your business, you need to register.

Register within 30 days of the end of the month in which you went over the threshold, because late registration can mean paying VAT on sales since the date you should have registered, plus a possible penalty. Our guides to the VAT registration threshold and to paying a VAT bill explain what follows.

Free advice is available from nibusinessinfo.co.uk, from your local council and from Invest Northern Ireland, and it is worth using before you commit money. The fuller picture of local funding is in our guide to business grants in Northern Ireland.

The start-up support overview also covers extra help for women, disabled people, young entrepreneurs, people from minority ethnic groups and people on low incomes. Eligibility for any scheme is set by the scheme, so check the rules on its own page.

It depends on what you do, so check before you trade. GOV.UK lists licences or permits for activities such as playing music, selling food or trading in the street, and nibusinessinfo.co.uk has a licence finder you can search by activity.

• Business insurance, which GOV.UK suggests as a way to get more protection if something goes wrong.
• Registering for PAYE if you employ staff, including yourself as the only director of a company.
• A criminal record check if you work with children or vulnerable adults; AccessNI handles these in Northern Ireland.
• Data protection rules if you store or use personal information.
• Business rates if you rent or buy premises, with a possible discount for small businesses.

None of this is advice on your particular trade. Ask a solicitor or your trade body where a rule is unclear.

Most new businesses fund the start from a mix of savings, grants and a start-up loan, and take on other finance later when there is trading history. The right mix depends on how much you need and how soon the business will earn.

• Start Up Loans: a government-backed personal loan of up to £25,000, unsecured, at a fixed 7.5% a year, repaid over 1 to 5 years, with 12 months of free mentoring. It is for new businesses or those trading under 60 months. See our guide to start-up business loans.
• Investment Fund for Northern Ireland: the British Business Bank says it is open for applications, with loans from £25,000 to £2 million and equity investments up to £5 million for smaller businesses across Northern Ireland. Check its eligibility rules before you plan around it.
• Grants: use the business support finder and see small business grants for how grants differ from loans.

Borrowing costs interest and fees, and a lender will usually look at the plan, your credit file and how the money will be repaid. A cash flow forecast is the document that tends to make or break that conversation.

Capzy is a credit broker, not a lender, and is paid by the lender. We do not register businesses, give tax or legal advice, or arrange grants or equity, so use the sources above for those. Once you are trading, we introduce Northern Ireland businesses to lenders for business loans in Northern Ireland, and you can see the product types in our directory of lenders.

You can check your funding options with a soft search that does not affect your credit score. A full application to a lender may involve a hard search, and any offer is subject to status and lender criteria. Ask an accountant to check your numbers before you borrow.