Forming a limited company is one of the most significant steps an entrepreneur can take. This pillar guide brings together everything you need to know — from understanding business structures, to registration, to your first year of compliance.
What This Guide Covers
Why Form a Limited Company?
A private limited company (Ltd) is a separate legal entity distinct from its owners. This separation provides limited liability protection — your personal assets (home, savings) are shielded from business debts. It also enables more tax-efficient income extraction, greater professional credibility, and cleaner arrangements for future investment or sale.
In the UK, there are approximately 5 million registered companies, with around 600,000 new incorporations every year. For most founders earning consistent profits above £30,000–£40,000, the tax and liability advantages of a limited company comfortably outweigh the additional administrative burden.
Sole Trader vs. Limited Company
Before incorporating, consider whether a limited company is the right structure for your situation. Sole traders have fewer obligations and lower costs, but pay more tax on higher profits and have unlimited personal liability.
| Factor | Sole Trader | Limited Company |
|---|---|---|
| Setup | Register with HMRC only | Register at Companies House |
| Liability | Unlimited personal liability | Limited to share capital |
| Tax on profits | Income Tax (20–45%) + NICs | Corporation Tax (19–25%) |
| Income extraction | All profit is personal income | Salary + dividends strategy |
| Admin burden | Low (Self Assessment only) | Higher (accounts, CT return, payroll) |
| Professional image | Moderate | High |
What You Need to Register
Before starting your application, gather the following:
Company Name
Unique, not already registered, compliant with Companies House rules
Registered Office Address
A physical UK address — your home or a professional address service
Director Details
Full name, date of birth, residential address, nationality, occupation
Shareholder Details
Full name, address, number and class of shares to be issued
SIC Code
Standard Industrial Classification code identifying your business activity
Share Structure
Number and value of shares to issue (typically 100 × £1 ordinary shares)
The Registration Process
Choose and check your company name
Search the Companies House register and check trademark and domain availability.
Confirm your registered office address
Decide whether to use your home address or a professional registered office service.
Confirm directors and shareholders
Gather all required personal details for directors and shareholders (PSCs).
Choose your Articles of Association
Most companies use the standard Model Articles provided by Companies House.
Submit your application
Apply online via Companies House (£12) or through Sterling Formations (free with Tide account).
Receive your Certificate of Incorporation
Your company is now officially registered. You will receive your company number and documents.
After Incorporation: Your First 90 Days
Registration is only the beginning. In your first 90 days, you should:
- Open a business bank account in the company's name
- Register for Corporation Tax with HMRC (within 3 months of trading)
- Set up PAYE if paying yourself or employees a salary
- Consider VAT registration (mandatory above £90,000 turnover)
- Set up accounting software (Xero, FreeAgent, QuickBooks)
- File your first Confirmation Statement (due annually, within 14 days of your confirmation date)
Deep-Dive Articles
How to Register a UK Limited Company: Complete 2025 Guide
A comprehensive, step-by-step guide to officially incorporating your business in the UK, from choosing a name to post-incorporation duties.
Sole Trader vs Limited Company: Which is Right for You?
Understand the key differences in tax, liability, and administration between operating as a sole trader and running a limited company.
How to Choose the Perfect Company Name in the UK
Tips for selecting a memorable business name, checking availability, and understanding Companies House naming restrictions.
What is a Registered Office Address? (And Why You Need One)
Every UK company requires a registered office address. Learn the legal requirements and why many founders choose not to use their home address.
Share Structure for UK Limited Companies: A Founders' Guide
A practical guide to structuring shares in your UK limited company, including ordinary shares, alphabet shares, and how to divide equity between founders.
What is a Memorandum of Association? UK Company Law Explained
The Memorandum of Association is a founding document of every UK limited company. Here is what it is, what it says, and why it matters.
Ready to incorporate?
Register your UK limited company after reviewing the current Companies House fee, provider terms, and ongoing responsibilities.
Start Application