Whether you’re self-employed or work for someone else, you have to pay National Insurance contributions (NICs). Your contributions go towards certain state benefits, including your state pension.
Here’s a look at National Insurance basics and a rundown of what you need to know if you’re self-employed.
Who pays National Insurance contributions?
You have to pay National Insurance contributions if you’re:
- Age 16 or over
- Employed and earn £162 or more a week
- Self-employed and make a profit of £6,365 a year or more (effective from 6 April 2019)
How much you pay depends on your earnings. We’ll come to that later.
There are a number of classes of NIC. Employees and agency workers pay National Insurance at a different rate from people who work for themselves.
When you reach state pension age, you can stop payingNational Insurance, even if you carry on working. That’s unless you’re payingClass 4 National Insurance — which is what self-employed people pay. You’ll have to keep paying this until the start of the next tax year after you reach state pension age.
What benefits do my NICs pay for?
Your National Insurance contributions count towards the following benefits:
- State pension
- Maternity Allowance
- Contribution-based Jobseeker’s Allowance
- Contribution-based Employment and Support Allowance
- Bereavement benefits
You can get these benefits only by making National Insurance contributions.
Benefits that DON’T depend on NICs include:
- Attendance Allowance and Disability Living Allowance
- Child benefit
- Guardian’s Allowance
- Income-based Jobseeker’s Allowance
- Industrial injuries
- Carer’s Allowance

What are the different classes of National Insurance contributions?
Which class of National Insurance you pay depends on your employment status, what you earn, and whether your National Insurance record has any gaps.
Here’s a look at the different classes and who they apply to:
National Insurance ClassApplies to
Class 1 - Employees under state pension age earning more than = £162/week. Deducted at source
Class 1A or 1B - Paid directly by employer on expenses or benefits
Class 2 - Self-employed – to qualify for benefits such as the state pension
Class 3 - Voluntary contributions, to fill gaps in your record
Class 4 - Self-employed with profits over £8,424 a year
What if I earn less?
If you’re self-employed and your profits fall below a certain limit, called the small profits threshold, you won’t have to pay Class 2 or Class 4 NICs. For 2018/19, that limit is£6,205. However, you can pay Class 2 NICs voluntarily.
In some circumstances, Class 2 NICs can also be paid by employed or self-employed people working overseas.
What are Class 4 NICs?
You pay Class 4 NICs on top of Class 2 NICs if you’re self-employed and earn more than £8,424 a year (this will go up to £8,632 from6 April 2019). This is called the Lower Profits Limit.
How do I pay National Insurance contributions when I’m self-employed?
When you’re self-employed, your Class 2 and Class 4National Insurance Contributions get calculated and paid with your income tax, through the self-assessment system. If you make payments on account, your Class 4 NICs will automatically be paid with these instalments.
If you don’t make payments on account, your Class 4 NICs will be due on 31 January after the relevant tax year (or three months earlier, on 31 October, if you file a paper return). Your Class 2 NICs are also due on31 January (or 31 October, if you file a paper return).
If you want to claim particular benefits, such as Maternity Allowance, you might need to pay your Class 2s before the self-assessment deadline. Alternatively, you can pay your Class 2 NICs regularly throughout the tax year, instead of a lump sum payment. Get in touch with HMRC to set this up.












