How Much National Insurance Do I Pay? A Small Business Owner’s Guide
When asking how much National Insurance do I pay as a small business owner, the answer depends entirely on how you take your income: Class 4 applies to self-employed profit, Class 1 to a director’s salary, employer NI to staff wages, while dividends are not subject to National Insurance.
National Insurance helps fund the State Pension and NHS, and these figures reflect the 2026/27 HMRC rates.
Key Takeaways
- How much National Insurance self-employed people pay starts with Class 4 at 6% on profits between £12,570 and £50,270, falling to 2% on profits above £50,270, while Class 2 has not been compulsory since April 2024.
- How much National Insurance a company director pays depends on their salary: there is no employee NI up to £12,570 a year, followed by 8% up to £50,270 and 2% above that, while dividends carry no National Insurance.
- Employers pay 15% National Insurance on staff earnings above £5,000 a year, though the Employment Allowance can offset up to £10,500 of that bill.
How Much National Insurance Do I Pay?
National Insurance is not one flat charge on income; the amount depends on how that income is received. If you are wondering how much National Insurance do I pay, the calculation splits across four main categories: self-employed profit, a director’s salary, staff wages, or dividends.
The system dates back to the National Insurance Act 1911, although it does not work like the personal savings pot that some people assume it is.
HMRC calculates these National Insurance contributions (NICs) differently for each route, and the table below sets out the 2026/27 position for each one. These figures cover the tax year running from 6 April 2026 to 5 April 2027.
| Income type | National Insurance charged | Who pays it |
|---|---|---|
| Self-employed profit (sole trader) | 6% on £12,570–£50,270, 2% above | Individual, via Self Assessment |
| Director’s salary (PAYE) | 0% to £12,570, 8% to £50,270, 2% above | Individual, via payroll |
| Staff wages (employer) | 15% above £5,000 a year, no upper limit | The company |
| Dividends | 0%, no National Insurance charged | Nobody, dividend tax applies instead |
The sections below look at each of these four positions in turn, starting with sole traders.
National Insurance for Sole Traders: Class 4 Rates and Thresholds
If you are operating as a sole trader and asking how much National Insurance do I pay, your bill depends on your profit rather than your turnover:
- 0% on profit up to £12,570 a year (the Lower Profits Limit)
- 6% on profit between £12,570 and £50,270
- 2% on profit above £50,270
- Class 2 National Insurance became voluntary from April 2024 — profit above the £7,105 Small Profits Threshold earns a State Pension qualifying year automatically, with no payment required
- Below £7,105, you can still pay voluntary Class 2 at £3.65 a week to protect your National Insurance record
Maintaining these qualifying years is central to retirement planning alongside understanding how much can a pensioner earn before paying tax on post-work income.
National Insurance for Company Directors: How Salary Is Taxed
How much National Insurance a company director pays depends on the salary they receive. HMRC calculates Class 1 National Insurance the same way it does for employees, but across the full tax year rather than pay period by pay period.
When founders first explore how to register a company in UK, Companies House records you as an official director, but it is HMRC’s payroll rules, not Companies House, that determine your National Insurance liability.
- Your company works out your National Insurance using annual National Insurance thresholds — £12,570 as the Primary Threshold and £50,270 as the Upper Earnings Limit — rather than a weekly or monthly figure.
- Salary up to £12,570 a year carries no employee National Insurance, though it still counts toward your State Pension record.
- Salary between £12,570 and £50,270 is charged at 8% through PAYE, then 2% above that.
- Because the calculation is made annually, you can take an uneven salary during the year, such as a lump sum towards the end of the tax year, without triggering the extra National Insurance that a regular employee might face.
Most directors use National Insurance category letter A unless a specific exemption applies.
National Insurance and Dividends: Why the Split Matters
Dividends carry no National Insurance; neither the director receiving them nor the company paying them pays NI on the dividend. They are a distribution of profit after Corporation Tax has been paid, rather than earnings from employment, so National Insurance does not apply.
Instead, dividend income above the £500 Dividend Allowance is taxed at separate dividend tax rates based on the recipient’s Income Tax band.
This distinction also sits within the company law framework set out in the Companies Act 2006, which treats dividends as a return to shareholders rather than employment income.
If you are weighing up salary against dividends, this is one of the main reasons the balance between the two can affect your National Insurance bill.
Employer National Insurance: What It Costs to Hire Staff
As an employer, you pay 15% National Insurance on each employee’s earnings above £5,000 a year, with no upper limit.
GOV.UK publishes the current National Insurance rates and Secondary Threshold each tax year, and HMRC expects this to be reported through your Full Payment Submission on or before every payday.
- Take an employee earning £30,000 a year, or £2,500 a month.
- Subtract the monthly Secondary Threshold of £417 from their monthly pay: £2,500 − £417 = £2,083.
- Multiply that figure by 15%: £2,083 × 15% = £312.45 a month.
- Across the year, that comes to roughly £3,749 in employer National Insurance for this one employee, on top of their gross salary.
Applying the same calculation across your payroll gives you the total employer National Insurance bill, which forms part of broader staffing overheads alongside statutory obligations such as managing how many sick days per year staff can take.
Employment Allowance: Cutting Your Employer NI Bill
The Employment Allowance can reduce your employer National Insurance bill by up to £10,500 a year, but not every business qualifies. HMRC requires you to claim it fresh every tax year.
- Most employers with at least one employee, other than a sole director, paid above the Secondary Threshold can claim it
- The £100,000 employer NI liability cap on eligibility was removed from April 2025, so larger small businesses can now claim too
- You must claim the Employment Allowance each tax year through your payroll software — it is not applied automatically
- A company where the only person paid above the Secondary Threshold is a single director cannot claim the allowance at all
This single-director rule can catch out small companies, so check it carefully before assuming you qualify for the allowance.
Salary vs Dividends: Which Combination Costs You Less National Insurance?
For small business owners, the salary-dividend split can matter more than almost any other single decision when planning their National Insurance.
Many limited company directors pay themselves a low salary, commonly around £12,570, topped up with dividends, as this combination can minimise National Insurance while still protecting the State Pension record.
The Federation of Small Businesses has highlighted this as an important decision for new directors during their first year of trading.
| Myth | Reality |
|---|---|
| National Insurance builds a personal savings pot, like a private pension | It funds current state spending; contributions don’t sit in a personal account |
| Self-employed people must still pay a weekly Class 2 charge | Class 2 has been voluntary since April 2024 for profits above the Small Profits Threshold |
| Directors and regular employees pay National Insurance the same way | Directors use an annual earnings period, not a per-payslip calculation |
| Taking a salary instead of dividends always means more take-home pay | Dividends often produce higher take-home pay precisely because they avoid National Insurance entirely |
| The Employment Allowance is automatic once a business has staff | It must be actively claimed through payroll software every tax year |
Taking £10,000 as salary rather than dividends can cost a director more than £2,300 in combined employee and employer National Insurance once the 8% employee charge and 15% employer charge are taken into account.
Dividends avoid this National Insurance cost because dividend income is not subject to National Insurance.
Run the numbers for your own profit level before settling on a salary figure, as the most suitable split can change as income grows.
Conclusion
Understanding how much National Insurance do I pay comes down to structuring your business income effectively: Class 4 on profit, Class 1 on salary, employer NI on staff wages, and nothing on dividends. Checking the current GOV.UK thresholds each tax year will help keep your calculation accurate.
For small business owners, the National Insurance bill in 2026/27 depends on which income route applies.
FAQ
How much National Insurance do I pay on dividends?
No. Dividends are not classed as earnings from employment, so neither the recipient nor the company pays National Insurance on them. Dividend income is taxed separately through dividend tax rates instead.
Can a sole director claim Employment Allowance?
No, in most cases. A company where the only person paid above the Secondary Threshold is a sole director cannot claim the Employment Allowance, even if that director is the company’s only employee. Taking on a second paid employee can change the position.
What happens if a business doesn’t pay National Insurance on time?
HMRC can charge penalties and interest when employer National Insurance payments are made late, with penalties starting at around £100 a month for smaller employers. Persistent non-payment can lead to a formal HMRC debt determination, so contacting HMRC early if cash flow is tight is the safer option.
Do sole traders need to register for National Insurance separately from Self Assessment?
No. Once registered for Self Assessment as self-employed, HMRC calculates and collects Class 4 National Insurance automatically as part of the same tax return. There is no separate National Insurance registration step required.
Can someone be a sole trader and a company director at the same time for National Insurance purposes?
Yes. How much National Insurance you pay in this situation is assessed separately for each role: Class 4 applies to sole trader profit, while Class 1 applies to any director’s salary, with HMRC applying an annual maximum to prevent contributions being duplicated beyond the relevant limits.
Disclaimer: This article is for informational purposes only and does not constitute formal tax, legal, or accounting advice; please consult a qualified professional or HMRC for guidance on your specific circumstances.
