Class 2 NIC for the Self-Employed: What You Need to Know in 2025/26

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If you’re self-employed in the UK whether as a freelancer, sole trader, or contractor you’ve probably come across Class 2 National Insurance Contributions (NICs). But what exactly are they, how much do you pay, and why are they so important?

This post explains what Class 2 NIC means for self-employed people, what’s changing in 2025/26, and how to stay compliant with HMRC.

What Are Class 2 NICs?

Class 2 National Insurance Contributions (NICs) are weekly payments that self-employed people in the UK pay to build up entitlement to certain state benefits.

If you’re self-employed, paying Class 2 NICs helps you qualify for:

  • The State Pension your contributions count towards your National Insurance record, which affects how much State Pension you’ll receive when you retire.
  • Maternity Allowance financial support for self-employed mothers who meet certain conditions.
  • Employment and Support Allowance (ESA) which may be available if you’re unable to work due to illness or disability.

Unlike Class 4 NICs  which are calculated as a percentage of your profits (and work more like an extra tax) Class 2 NICs are flat-rate payments, usually paid through your Self Assessment tax return.

Key point: Keeping up with your Class 2 NICs helps you protect your eligibility for basic state benefits. If your profits are below the Small Profits Threshold, you can still pay voluntarily to maintain your National Insurance record.

For the latest rates and thresholds, check GOV.UK: National Insurance for Self-Employed or speak to an accountant for advice on whether you should pay voluntarily.

Who Pays Class 2 NIC?

You must pay Class 2 National Insurance Contributions if you’re:

  • Self-employed for example, as a sole trader, freelancer, or contractor.
  • Earning profits above the Small Profits Threshold for the tax year (the threshold can change each year, so it’s important to check the current limit on UK).

If your profits are below the Small Profits Threshold, you don’t have to pay Class 2 NICs, but you may choose to pay them voluntarily to protect your entitlement to certain state benefits, such as the State Pension.

Tip: Many self-employed people find it worthwhile to pay Class 2 NICs voluntarily if they’re under the threshold, so they don’t end up with gaps in their National Insurance record.

For more details on whether you need to pay, see National Insurance for the self-employed or speak with an accountant to check what’s best for your situation.

Class 2 NIC Rates and Thresholds (2025/26)

For the tax year 6 April 2025 to 5 April 2026:

ThresholdDetail
Weekly Rate£3.45 per week
Small Profits Threshold£6,725 annual profits

This means:

  • If your profits are £6,725 or more, you must pay Class 2 NIC.
  • If your profits are below £6,725, you don’t have to pay but you can voluntarily pay to protect your National Insurance record.

GOV.UK – National Insurance for self-employed

Why Should You Pay Class 2 NIC If Under the Threshold?

If your self-employed profits are below the Small Profits Threshold, you don’t have to pay Class 2 National Insurance Contributions (NICs) but in many cases, it’s wise to pay them voluntarily.

Here’s why:

Your Class 2 NIC payments help you build up entitlement to:

  • The State Pension you usually need at least 10 qualifying years of contributions to get any State Pension, and 35 years for the full amount.
  • Maternity Allowance financial support for self-employed mothers who meet the contribution conditions.
  • Contributions-based Employment and Support Allowance (ESA) if you can’t work due to illness or disability.

Key point: If you don’t pay Class 2 NIC and you don’t build enough qualifying years through other employment, you could miss out on part of your State Pension later on.

If your profits are under the Small Profits Threshold but you want to protect your record, you can opt in to pay Class 2 NIC voluntarily when you file your Self Assessment tax return each year.

For more information, see GOV.UK: National Insurance if you’re self-employed or ask your accountant for advice.

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How Do You Pay Class 2 NIC?

You don’t pay Class 2 NIC separately it’s calculated and collected automatically when you submit your annual Self Assessment tax return.

Here’s how it works:

  1. Complete your Self Assessment online or through your accountant.
  2. HMRC will calculate your Class 2 NIC due, based on your declared profits.
  3. Pay the total tax bill (Income Tax, Class 2 NIC, and Class 4 NIC if applicable) by 31 January following the end of the tax year.

For example, for the 2025/26 tax year, you’ll pay by 31 January 2027.

Example Calculation

Let’s say you’re a self-employed graphic designer with profits of £12,000 in 2025/26.

  • Your profits are above £6,725 → you must pay Class 2 NIC.
  • £3.45 per week x 52 weeks = £179.40 for the year.
  • This is added to your Income Tax and Class 4 NIC on your Self Assessment bill.

Difference Between Class 2 and Class 4 NIC

Self-employed people often pay both. Here’s the difference:

FeatureClass 2 NICClass 4 NIC
Based onFlat ratePercentage of profits
PurposeBuilds state benefit entitlementsAdditional tax on profits
Rate (2025/26)£3.45/week9% on profits £12,570–£50,270, 2% over £50,270
How PaidSelf AssessmentSelf Assessment

What If You Forget to Pay?

If you submit your Self Assessment tax return late, you might miss paying your Class 2 National Insurance Contributions (NICs) for that year. Missing these payments can have consequences:

  • Leave gaps in your National Insurance record, which could mean you don’t have enough qualifying years for the full State Pension.
  • Reduce your future State Pension amount every missing year can lower what you receive in retirement.
  • Affect your entitlement to other benefits linked to NICs, like Maternity Allowance or contribution-based ESA.

If you do miss contributions, you may be able to:

  • Pay voluntary Class 2 NICs later, if HMRC allows you to.
  • Make up the gap with a Class 3 NIC top-up, but Class 3 contributions are usually more expensive than Class 2.

Tip: It’s always cheaper and easier to stay up to date by filing your Self Assessment on time and paying any Class 2 NIC due.

For more about topping up gaps, check GOV.UK: Voluntary National Insurance or speak to your accountant for help.

Can You Claim Back Class 2 NIC?

Generally, no once paid, Class 2 National Insurance Contributions (NICs) are not refundable. They count towards your National Insurance record and help you qualify for certain state benefits.

However, there are some exceptions where you may be able to claim a refund:

  • If you paid Class 2 NIC when you didn’t need to, for example if your profits turned out to be below the Small Profits Threshold but you paid automatically.
  • If HMRC reassesses your Self Assessment and adjusts your profit figures, which could reduce or remove your Class 2 NIC liability for that year.

Tip: Always double-check your income figures and Self Assessment before filing to avoid accidental overpayments. If you think you’ve overpaid, speak to your accountant or contact HMRC to see if you’re due a refund.

Tips for Managing Class 2 NIC

Staying on top of your Class 2 National Insurance Contributions is simple if you stay organised. Here are some practical tips:

  • Register for Self Assessment as soon as you become self-employed don’t leave it until the last minute.
  • Keep clear records of all your business income and expenses to ensure your profit figures are accurate.
  • Use accounting software like FreeAgent or The Balance App to track your profits and know if you’re over or under the Small Profits Threshold.
  • Check your National Insurance record regularly through your Personal Tax Account to see how many qualifying years you have towards your State Pension.
  • Plan ahead for your January tax bill set money aside through the year to avoid last-minute stress and late payment penalties.

Final Thoughts on Class 2 NIC for the self-employed

It might seem like a small cost, but it plays a big role in securing your State Pension and benefits.

If you’re earning just under the Small Profits Threshold, consider paying it voluntarily  it can be a low-cost way to protect your future entitlements.

How Accounting Wise Can Help

At Accounting Wise, we help freelancers, contractors and sole traders across the UK:

  • Calculate Class 2 and Class 4 NIC accurately
  • File Self Assessment returns on time
  • Understand how NIC affects your pension and benefits
  • Plan for tax liabilities so you’re never caught short

Need help understanding your business finances? Get started today for expert advice on improving your profits.

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