Step by Step Limited Company Formation in the UK

A limited company can make a growing business look more established, separate your personal finances from business risk and create opportunities for more structured tax planning. But step by step limited company formation is not just a Companies House form. The decisions made before and immediately after incorporation affect how easily you can pay yourself, claim expenses, deal with HMRC and keep the paperwork under control.

For tradespeople, contractors, landlords and owner-managed businesses, the goal is not simply to get a company number. It is to start with a set-up that works when you are busy earning, quoting for jobs, running a cab, managing tenants or keeping a team paid.

Is a limited company right for you?

Before registering, be clear about why you are changing structure. A limited company is legally separate from its owners. It can enter into contracts, own assets and make profits in its own name. In most cases, this means shareholders have limited liability, although directors can still be personally responsible where they give guarantees, act improperly or fail to meet legal duties.

A company can be a sensible option where profits are consistently above the amount you need to take home, where clients prefer dealing with a company, or where you want to bring in a business partner. It may also suit a subcontractor moving into larger contracts, or a landlord building a portfolio, although property incorporation needs careful tax advice before any transfer.

It is not automatically cheaper in tax. Companies pay Corporation Tax, and directors may pay tax personally on salary and dividends. There are also annual accounts, a Company Tax Return, a confirmation statement and company record-keeping to manage. The best choice depends on your profit level, household income, plans for the business and how much cash you need personally.

Step by step limited company formation: the key decisions

1. Choose a company name

Your name must be available and cannot be too similar to an existing registered company or contain restricted words without permission. Most private companies end in “Limited” or “Ltd”.

Choose something you will still be comfortable putting on invoices, a van, a website and supplier accounts in two years’ time. Check that it does not suggest a connection with government or a regulated trade when none exists. A company name is not the same as a trade mark, so a separate trade mark check can be worthwhile if branding is central to your plans.

2. Decide who will run and own the company

You need at least one director. Directors are responsible for running the company and meeting filing duties, even if an accountant prepares the paperwork. They must provide a service address, which appears on the public register, and give Companies House the required personal details.

You also need at least one shareholder. The shareholder owns the company, while the director manages it. In a small business, it is common for one person to be both. If a spouse, partner, investor or colleague will own shares, agree the split properly at the start. A casual 50/50 arrangement can become difficult if one person later wants out, contributes less time or disagrees on dividends.

You must also identify people with significant control, often called PSCs. This usually includes anyone holding more than 25% of shares or voting rights, or otherwise exercising significant influence over the company.

3. Set the share structure

Many new companies issue one ordinary share at £1. That is straightforward where there is one owner, but it is not the only option. If there are two owners, the number and type of shares determine ownership, voting rights and dividend entitlement.

Do not copy a share split from a friend’s company without thinking it through. Different share classes can offer flexibility, but they need to be set up correctly and are not a shortcut around tax rules. Where ownership is shared, written agreements and clear expectations are often as valuable as the incorporation documents.

4. Choose your registered office and business activity

Every company needs a registered office address in the UK jurisdiction where it is incorporated. Official post from Companies House and HMRC goes there, and the address is publicly visible. It can be your home address, a business premises or an appropriate accountant’s address where this service is provided.

You will also select a SIC code describing the company’s main activity. This is an administrative classification, not a detailed business plan. Pick the code that most closely reflects what you expect to do and update it if the business changes direction.

5. Incorporate with Companies House

To register, submit the company name, registered office, director details, shareholder information, PSC details, share structure, SIC code and governing documents. Most companies use standard articles of association, but bespoke articles may be needed where there are multiple owners or unusual rights.

Once Companies House approves the application, the company receives a certificate of incorporation and company number. Keep these safely. Incorporation confirms the company exists, but it does not complete the tax and operational work.

What to do straight after formation

This is where many new directors lose momentum. They register a company, then carry on using a personal bank account and mixing receipts with household spending. That makes bookkeeping harder, weakens the audit trail and can create unnecessary questions later.

Open a business bank account as soon as possible. Pay customer income into it and pay genuine business costs from it. Keep copies of receipts and invoices, including digital copies where they are clear and complete. If you pay a business cost personally, record it properly rather than guessing at year end.

Register the company for Corporation Tax when it starts trading. HMRC needs to know about the start of business activity, which can include buying stock, providing services, advertising or employing someone. The company will have an accounting period and deadlines for filing accounts and its Company Tax Return. These dates are easy to miss in the first year because the accounts filing deadline and tax payment deadline are not the same.

If the company will pay you or anyone else a salary, set up PAYE before the first payday. A director’s pay is not simply a weekly cash withdrawal. Salary, dividends, expense reimbursements and money you take as a director’s loan are all treated differently. Getting this right from day one prevents avoidable tax bills and payroll corrections.

VAT registration is compulsory once taxable turnover passes the registration threshold, but voluntary registration can suit some businesses below it. It depends on your customers, your costs and whether your prices can absorb or pass on VAT. Construction businesses should also consider CIS obligations, particularly where they pay subcontractors or work within the scheme.

Build a simple record-keeping routine

Good records are not about creating paperwork for its own sake. They show what the company earned, what it spent and what it owes. They also make it far easier to spot cash-flow pressure before the VAT or Corporation Tax bill arrives.

At a minimum, keep sales invoices, purchase receipts, bank statements, mileage records where relevant, payroll records, VAT paperwork and details of money introduced to or taken from the company. Reconcile the bank account regularly, ideally monthly. Waiting until the end of the year turns a manageable task into a costly clean-up exercise.

Set aside money for tax as you are paid. A busy month does not always mean spare cash, particularly if customers pay late or you have materials, fuel, insurance and wages to cover. A separate tax pot can stop money earmarked for HMRC being spent on day-to-day costs.

Common formation mistakes that cost time later

The most common problem is treating company money as personal money. Paying for private costs from the business account can lead to director’s loan issues and extra tax consequences. The reverse is also true: business costs paid personally should be recorded, so you are not left out of pocket.

Another mistake is assuming every expense is allowable because it feels work-related. The tax rules look at whether an expense is wholly and exclusively for the business, with further rules for areas such as travel, home working, vehicles and clothing. A branded uniform may qualify where ordinary clothing usually does not.

Finally, do not leave statutory post unopened. Companies House and HMRC letters often contain deadlines that cannot be ignored. Late filing can bring penalties even where little or no tax is due.

A company should support the way you work, not create another job at the end of every month. If you want practical help with formation, payroll, VAT, CIS or ongoing accounts, call Short and Sons Accountants for a free no obligation quote if you have further questions on any topics covered in this article. Starting with the right records and a clear plan gives you more time to focus on the work that brings money in.

Resource material

• Companies House, guidance on incorporating and running a limited company.

• HM Revenue & Customs, guidance on registering for Corporation Tax and filing Company Tax Returns.

• HM Revenue & Customs, PAYE guidance for employers and company directors.

• HM Revenue & Customs, VAT registration guidance and Making Tax Digital requirements.

• HM Revenue & Customs, Construction Industry Scheme guidance for contractors and subcontractors.