Free guide to starting a UK plant hire companyUpdated October 2026 · Browse all guides

Starting out

Sole trader or limited company for plant hire?

Sole trader or limited company for a new plant hire business: liability, tax, finance, contracts and admin compared, and the steps to set up either.

Guide specPHSUG-09
Read time8 min
LevelBeginner
Incorporation£100 online
UpdatedOct 2026

Key takeaways

  • Sole trader: simplest to start, but you are personally liable for business debts.
  • Limited company: the company is liable, which matters when you finance plant and hire it out.
  • Most plant hire firms become limited companies early because of asset finance, contracts and risk.
  • Incorporating online costs £100, and directors must verify their identity with Companies House.
  • Ask an accountant to compare the tax for your expected profit before deciding.

The short answer

If you're hiring out one or two machines you already own, starting as a sole trader is quick and cheap. If you're financing several machines, hiring to contractors on credit or employing people, a limited company is usually the better fit.

Side by side

Sole traderLimited company
Personal liabilityUnlimited: your own assets are at riskLimited to the company, unless you give personal guarantees
Set-upRegister for Self Assessment with HMRCIncorporate at Companies House (£100 online)
Tax on profitsIncome Tax and Class 4 National InsuranceCorporation Tax (19%–25%), then tax on what you take out
AdminLight: one tax return a yearHeavier: accounts, confirmation statement, company tax return, payroll
PrivacyName and address stay privateDirectors and accounts are on the public register
Credibility with contractorsFine for small jobsOften expected by larger customers
Selling the business laterHarderEasier: sell the company or its shares

Corporation Tax is 19% on profits up to £50,000 and 25% above £250,000, with marginal relief between. Check current rates on GOV.UK.

Liability and risk

Plant hire carries real risk: a machine can damage property, be stolen, or a large customer can fail to pay. As a sole trader those debts are yours personally. A limited company separates them, although lenders often ask directors of new companies for personal guarantees on finance, so the protection is never complete.

Tax

As a sole trader you pay Income Tax and Class 4 National Insurance on all profit, whether you take it out or not. A company pays Corporation Tax on profit, and you pay personal tax on salary and dividends you draw. Which works out cheaper depends on your profit, what you draw and your other income, and the rules change regularly, so get your accountant to run both.

VAT, PAYE and CIS apply in similar ways to both. See VAT, PAYE and CIS for plant hire.

Finance and contracts

  • Most plant lenders deal with both, but limited companies can access a wider range of products.
  • Larger contractors and housebuilders often prefer or require limited company suppliers.
  • Trade credit and supplier accounts can be easier to open as a company.

How to set up each

Sole trader

  1. 01

    Register for Self Assessment

    With HMRC, once trading income goes over £1,000 a year.

  2. 02

    Open a business bank account

    Keep hire income and costs separate.

  3. 03

    Set up bookkeeping

    Track hire income, deposits, repairs, fuel and finance.

Limited company

  1. 01

    Verify your identity

    Every director must complete Companies House ID verification.

  2. 02

    Incorporate

    Choose a name, registered office, directors and shareholders; £100 online.

  3. 03

    Register for Corporation Tax

    Within three months of starting to trade.

  4. 04

    Open a company bank account

    In the company's name.

  5. 05

    Set up payroll

    Register as an employer before paying any salary, including your own.

Switching later

Many people start as sole traders and incorporate once the business grows. Moving machines and finance agreements into a new company can have tax and lender consequences, so plan the switch with your accountant and tell your finance companies before you do it.

FAQs

Common questions

Should a plant hire business be a limited company?
Usually yes once you finance several machines, hire to contractors on credit or employ people, because the company rather than you is liable for business debts. A sole trader can work for a very small start using machines you already own.
How much does it cost to set up a limited company?
Incorporating online with Companies House costs £100. Every director must also verify their identity with Companies House. Accountancy fees are extra.
Do I still need a personal guarantee if I'm a limited company?
Often, for a new company. Finance lenders commonly ask directors to guarantee agreements until the company has a trading history.

This guide is general information for people setting up a plant hire business in the UK. It is not legal, tax, insurance or financial advice. Rules and thresholds change, so check current guidance on GOV.UK and take advice from an accountant, solicitor or broker before acting.