Contractors

When do I need a Limited company as a contractor?

There is no single income threshold that triggers the need for a limited company, but most UK contractors benefit from incorporating once earnings consistently exceed the VAT registration threshold. A limited company offers corporation tax rates, dividend tax planning, and expense flexibility that sole trader or umbrella arrangements cannot match. IR35 status, client expectations, and long-term earning trajectory should all factor into the timing decision.

By Jordan Macey MAAT Reviewed by Noor Fiaz Updated 16 Apr 2026 1

Key takeaways

Most contractors benefit from a limited company once annual net income consistently exceeds around 50,000 pounds, though individual circumstances vary.
Operating through a limited company gives access to corporation tax rates, salary and dividend splitting, and a wider range of claimable business expenses.
If you are inside IR35 on most engagements, an umbrella company may be more cost-effective than running your own limited company.
Some clients and agencies require contractors to invoice through a limited company rather than as a sole trader, making incorporation a practical necessity.
Setting up a limited company through Companies House costs as little as 12 pounds and can be completed online in under 24 hours.

There is no clear cut time as to when you should start working through your own limited company. With other routes available—such as operating as a sole trader, or working through an umbrella company—it is always worth weighing up what is best for you and your circumstances.

With that being said, if you plan to work as an independent contractor for the foreseeable future, opening your own limited company at the early stages can maximise your opportunities for reaping the benefits of having your own company straight away.

Frequently asked questions

At what income level should a contractor set up a limited company?

There is no fixed threshold, but accountants typically recommend incorporating once your annual contractor income consistently exceeds 50,000 pounds before expenses. At that level the tax savings from paying corporation tax on company profits and extracting income through a combination of salary and dividends usually outweigh the additional compliance costs and administration involved in running a limited company.

Can I switch from sole trader to limited company mid-contract?

Yes. You can incorporate at any time and assign your existing contracts to the new limited company, although you should notify your client or recruitment agency of the change. Your accountant can help with opening balances, transfer of business assets, and ensuring your self-assessment obligations for the sole trader trading period are closed properly with HMRC.

Is a limited company better than an umbrella company for contractors?

A limited company usually offers greater tax efficiency and more flexibility over how you extract income, but it comes with additional admin and compliance responsibilities. If most of your contracts fall inside IR35, an umbrella company may be simpler and nearly as cost-effective because the main tax advantages of operating a limited company are largely removed by the off-payroll rules.

What are the ongoing costs of running a contractor limited company?

Typical annual costs include accountancy fees of 100 to 250 pounds per month, the Companies House confirmation statement fee of 13 pounds, professional indemnity insurance premiums, and business banking fees. Total overhead usually ranges from 1,500 to 4,000 pounds per year depending on your chosen accountant, insurance requirements, and whether you add optional services like IR35 contract reviews.

Do I need a business bank account to run a contractor limited company?

Legally you are not required to have a separate business bank account, but in practice it is essential for running your company properly. HMRC expects clear separation between personal and company finances, and mixing transactions across accounts makes bookkeeping, VAT returns, and tax calculations significantly harder and more time-consuming for both you and your accountant.

How quickly can I set up a limited company as a contractor?

You can register a limited company with Companies House online in under 24 hours for a fee of 12 pounds using the standard digital service. Once registered, you will need to open a business bank account, register for corporation tax and VAT if applicable, and arrange any required professional insurance before you can start invoicing your first client.

What happens to my limited company if I go back to permanent employment?

You can make the company dormant, which pauses all trading activity while keeping it registered at Companies House. Filing requirements reduce to a dormant accounts submission and annual confirmation statement each year. If you do not plan to contract again in the future, you can formally close the company through a voluntary strike-off application or members voluntary liquidation process.