When starting or growing your business, one of the most important decisions you’ll face is choosing between operating as self-employed or setting up a limited company. Both structures come with their own tax implications, and the right choice can affect your take-home pay, responsibilities, and overall profitability.
In this post, we’ll break down the key tax differences between being self-employed and running a Ltd company, helping you make the best decision for your situation.
Self-employed: simple and flexible
Being self-employed (as a sole trader) is the most straightforward way to start working for yourself. It’s popular among CIS subcontractors, freelancers, and small business owners who want low admin and full control.
Key tax features of self-employment:
- Pay Income Tax on profits through the Self Assessment system
- Pay Class 2 and Class 4 National Insurance
- Can deduct allowable business expenses
- No need to register a separate business entity
Ltd company: More control, more responsibility
Setting up a limited company means your business is legally separate from you. This can offer tax benefits and added credibility but comes with more admin and regulation.
Key tax features of Ltd companies:
- Pay Corporation Tax (currently 19%-25%) on profits
- Directors take salary + dividends (which are taxed separately)
- Must file annual Company Tax Returns and Company Accounts
- Directors must also file a Self Assessment tax return
- Can claim a wider range of allowable expenses
Which is more tax-efficient?
There’s no one-size-fits-all answer it depends on your income level and business goals.
- The real efficiency of registering a limited company starts once you reach the additional rate tax band, income over £50,270. To see even a small financial benefit, you’d typically need to be earning at least £60,000–£70,000 a year for it to make sense.
- At income levels around £40,000–£50,000, there’s generally no tax advantage to running a limited company compared to staying self-employed.
Keep in mind: Running a Ltd company requires filing annual accounts and managing payroll if you pay yourself a salary.
Legal and reporting responsibilities
As self-employed:
- Register with HMRC
- Submit annual Self Assessment return
- Keep business records and expense receipts
As a Ltd company:
- Register with companies house
- File corporation tax return (CT600)
- Submit confirmation statement & annual accounts
- Manage payroll if drawing a salary
Don’t forget VAT
If your business earns over £90,000/year (threshold as of 2025), you must register for VAT, whether you’re self-employed or running a Ltd company. This adds another layer of tax complexity but could also bring savings if you reclaim VAT on expenses.
Need help deciding?
Choosing between self-employment and forming a limited company has long-term implications. At Tax2u, we guide self-employed individuals, CIS subcontractors, and small business owners through tax decisions, helping them:
- Understand tax implications
- Register with HMRC or Companies House
- Maximise tax efficiency
- File accurate returns on time
Speak to a Tax2u expert today – We’ll help you choose the best structure for your business.