Key entity types and their tax implications
Below is a quick guide to the most common legal structures for new businesses in the UK:
| Entity Type | Liability | Taxation | Administrative burden |
|---|---|---|---|
| Sole Trader | Full personal liability | Self-assessment: income tax plus Class 2 & 4 NI on profits over thresholds | Easiest to set up; simplest accounts; fewer filings |
| Partnership or LLP | Partners’ liability (unlimited or limited via LLP) | Income tax on profit shares (no company tax) | More complex than sole trader; LLP requires filings; profit splitting rules |
| Private Limited Company (Ltd) | Separate legal entity; shareholders’ liability limited | Corporation tax on profit; PAYE & dividend tax for directors/shareholders | Accounts, corporation tax return, filings at Companies House, compliance standards |
| Public Limited Company (PLC) | Limited liability; ability to raise capital publicly | Same as Ltd but more regulatory oversight | Higher minimum capital, stricter reporting, shows on market publicly |
Recent changes affecting entity choice
- From 6 April 2026, voluntary National Insurance (NI) contributions (Class 2 for most self-employed abroad) will be removed; new applications for Class 3 NI for periods abroad will require 10 years’ continuous UK residency or NIC record. This impacts sole traders and non-resident self-employed choosing between UK tax and overseas residency models. (gov.uk)
- From 6 April 2026, changes to the claims process for Creative Industries tax reliefs and expenditure credits: submission of a new CT600P page with the corporation tax return will be mandatory. Additional information form updated to avoid duplication. (gov.uk)
Choosing the right entity: what to focus on
Tax efficiency
- Limited companies often enjoy lower corporation tax rates, and you can extract profits via dividends (which may be taxed at lower rates than income).
- Sole traders/partnerships avoid double taxation but must pay personal income tax and significant NICs; less scope for tax planning.
Liability and risk
- High risk ventures—litigation, financial risk—point toward Ltd or LLPs. If low risk and smaller scale, sole tradership may work.
Compliance & administrative costs
- Ltd companies require preparation of statutory accounts, corporation tax returns, possibly audits, fulfilling Companies House obligations.
- Sole traders have much lighter duty—simple self-assessment, less paperwork.
Funding and scaling
- If raising capital or having multiple owners, Ltd or PLC structures are more flexible. Tax reliefs, share schemes, investor confidence all better with corporate forms.
Practical steps to set up correctly
- Decide ownership & control: will there be multiple shareholders or single person? Shareholder agreement matters.
- Register with Companies House (for Ltd/PLC/LLP) and HMRC for tax accounts.
- Choose accounting basis: cash vs accrual; make sure software for CT return supports new CT600P changes (from April 2026).
- Consider eligibility for reliefs (e.g., R&D, creative industries)—check that entity satisfies conditions.
Example comparison
- Jane wants to launch a small design agency; all income via contracts; low cost equipment → Sole trader keeps overheads low; profits taxed personally.
- Tom and Mary want to start a tech startup; intending to bring on investors, possibly issue shares → A private limited company likely better; supports share option schemes and allows investor equity.
In summary
Choosing the right structure isn’t just about tax today—it’s about your growth path, risk exposure, how you want to be taxed, and how easy or burdensome compliance will be. With changes coming in April 2026—especially for NI and relief‐filing requirements—don’t delay evaluating entity forms now.