National Insurance Guide UK 2026/27 — Classes, Rates, Thresholds and What You Pay

Most people think their NI contributions go straight to the NHS. They don't. The NHS is funded from general taxation — income tax, VAT, corporation tax — not from the National Insurance Fund. What NI actually funds is more specific, and it matters because your contribution record directly affects what you get back.

Your National Insurance contributions (NICs) are notionally ring-fenced to pay for:

• The State Pension — £241.30 per week in 2026/27, your biggest potential return on decades of contributions
• Contributory Employment and Support Allowance (ESA)
• Maternity Allowance, Bereavement Support Payment, and Jobseeker's Allowance (contribution-based)

That's it. The £25 billion raised by the employer NI hike in the Autumn Budget 2024 went into general spending, not the NI Fund. The full picture of UK taxation is covered in our tax hub — NI is just one piece of a system where the lines between contributions and general taxation have blurred almost completely.

And here's the uncomfortable reality: HMRC's own figures show the NI Fund has been in structural deficit since 2021 — benefit payouts exceed contribution income. The Treasury makes up the shortfall from general taxation, which means the "contributory principle" (you pay in, you get out) is already eroded.

Introduced by Lloyd George in 1911 as a mutual insurance scheme, National Insurance was designed so workers and employers paid into a dedicated pot that funded specific benefits. Over a century later, the lines between NI and income tax have blurred almost to nothing — except for one crucial difference: you stop paying employee NI at State Pension age, while income tax follows you to the grave.

The 2026/27 tax year runs from 6 April 2026 to 5 April 2027. The core employee and employer rates are unchanged from 2025/26 — locked in by the Autumn Budget 2024. Class 2 and Class 3 rates, however, have risen with inflation.

Employee Class 1 (deducted via PAYE)

Earnings between the Lower Earnings Limit (£129/week, £6,708/year) and the Primary Threshold don't trigger NI deductions, but they still count as qualifying years for your State Pension — a detail worth knowing if you work part-time.

Employer Class 1

Employers pay 15% on all earnings above the Secondary Threshold of £96 per week (£5,000 per year). This is the rate that jumped from 13.8% and whose threshold was slashed from £9,100 in the Autumn Budget 2024. It's now the single biggest tax-raising measure of this parliament.

On a £35,000 salary, the employee pays £1,794 in NI while the employer pays £4,500. Combined NI (£6,294) actually exceeds the income tax bill (£4,486) on this salary. On £50,000, the employee pays £2,994 in NI, the employer pays £6,750 — a combined £9,744 before a penny of income tax.

Self-employed (Class 2 + Class 4)

A self-employed person with £35,000 in taxable profits pays £1,345.80 in Class 4 NICs plus £189.80 in Class 2 — £1,535.60 total, roughly £259 less than an equivalent employee. That gap, once much wider, is now modest. Class 4 was 9% as recently as 2023/24.

Voluntary Class 3

£18.40 per week (£956.80 per year) for 2026/27. You can pay for gaps going back six tax years — and under a temporary extension, some people can fill gaps back to April 2006.

National Insurance and income tax share the same Personal Allowance threshold (£12,570) and are both collected via PAYE. The similarities end there. The structural differences create a tax system where marginal rates zigzag wildly — and where the highest earners actually pay the lowest NI rate as a share of total income.

NI is calculated per job, not per person. Someone with two part-time jobs each paying £12,000 pays zero NI (both below the PT) but owes income tax on the combined £24,000. Conversely, someone with one job paying £50,000 pays 8% NI on £37,430 of it. The per-job rule creates winners and losers with no policy justification.

The 2% upper rate is absurdly low. Once you earn above £50,270, your marginal NI rate drops from 8% to 2%. Someone on £150,000 pays 8% on the first £37,700 of taxable earnings and 2% on the remaining £99,730 — an effective NI rate of about 3.5% on their total salary. Someone on £40,000 pays an effective rate of about 5.5%. That's backwards.

At £40,000, you're paying 5.5% of your total income in NI. At £150,000, it's 3.5%. The system is upside down by design.

NI stops at State Pension age. From the tax year after you hit State Pension age — currently 67 for those reaching it from 2026 onwards — you stop paying employee Class 1 and Class 4 contributions entirely. Income tax continues. This is the single biggest tax cut most people will ever receive, and almost nobody talks about it.

Employer NI is economically a tax on employees. The OBR and IFS both treat employer NI as a tax on labour — it raises the cost of employing someone, which in the long run depresses wages. The Autumn Budget 2024's employer NI hike is expected to reduce real wage growth by approximately 0.3 percentage points per year according to OBR analysis.

This is the part that actually matters for your retirement. Every qualifying year of National Insurance contributions — whether from employment, self-employment, credits, or voluntary payments — adds 1/35th of the full State Pension to your eventual entitlement.

The full new State Pension for 2026/27 is £241.30 per week, or £12,547.60 per year. To get it, you need 35 qualifying years (if your NI record started after April 2016) or potentially more if you were contracted out before 2016.

Each additional qualifying year is worth roughly £6.89 per week — £358.50 per year. Over a 20-year retirement, that's £7,170 in today's money for a single year of contributions. The Triple Lock means the State Pension rises each year by the highest of inflation, wage growth, or 2.5%, so the real-terms value grows over time.

How to check your record: The GOV.UK Check your State Pension forecast service shows your current qualifying years, any gaps, and a projection of what you'll receive. It takes three minutes. If you haven't checked, do it now — many people discover gaps they had no idea existed.

How gaps happen: Career breaks, studying, caring for family, living abroad, or years earning below the Lower Earnings Limit all create gaps. You get NI credits automatically if you claim Child Benefit (for children under 12), certain benefits, or are a registered carer — but many people who qualify for credits don't claim them.

What if you're short? If your forecast shows fewer than 35 years, you have two main options: work more years (each year employed above the LEL adds one qualifying year), or pay voluntary Class 3 contributions to fill the gaps. That's what the next section covers.

Class 3 voluntary National Insurance contributions cost £18.40 per week for 2026/27 — £956.80 for a full year. In return, each year you buy adds roughly £358.50 per year (inflation-protected) to your State Pension for the rest of your life.

The maths is brutal in your favour:

• Cost: £956.80 (one-off, for one year's contribution)
• Annual return: £358.50 (inflation-linked, for life)
• Breakeven: 2 years and 8 months
• 20-year return: £7,170 (inflation-adjusted, since the Triple Lock typically delivers real growth)

There is no annuity on the market that comes close. A £956.80 single-premium annuity for a 66-year-old would pay perhaps £50-£60 per year — one-sixth of what Class 3 delivers. The reason is simple: the State Pension is subsidised by current taxpayers. You're buying into a system where today's workers fund yesterday's contributors.

The State Pension deferral alternative: You can also boost your State Pension by deferring when you claim. For every 9 weeks you defer, your pension increases by 1% — equivalent to about 5.8% per year of deferral. The breakeven on deferral is around age 84. If you're in good health and don't need the income immediately, deferral can make sense. But Class 3 contributions are simpler, earlier, and the breakeven is dramatically shorter.

When Class 3 doesn't make sense: If you're already on track for 35 qualifying years by State Pension age, buying additional years adds nothing — you can't exceed the full rate. If you're more than 10 years short of the minimum (10 years to get anything at all), you'll need to prioritise reaching that threshold first. And if you're in seriously poor health with a reduced life expectancy, the breakeven calculation changes.

How to pay: Use the HMRC National Insurance enquiries service to get a statement of what you owe and whether paying will actually boost your pension. Do NOT pay before confirming this — not all gaps can be filled, and some won't increase your forecast.

This section discusses pension-related decisions. The State Pension rules and Triple Lock are subject to future government policy change. Past inflation-linking is not a guarantee of future increases.

The Autumn Budget 2024 delivered the largest employer National Insurance increase in decades: the rate rose from 13.8% to 15%, and the threshold at which employers start paying collapsed from £9,100 to £5,000 per employee. The OBR estimates this raises £25 billion per year — equivalent to roughly 1% of GDP.

Here's what that means in practice for a small business with five employees each earning £30,000:

• Before the hike (2024/25): 13.8% × (£150,000 - £45,500) = £14,421
• After the hike (2026/27): 15% × (£150,000 - £25,000) = £18,750
• Additional cost: £4,329 per year

That's real money. It affects hiring decisions, salary budgets, and the viability of labour-intensive businesses. The hospitality, retail, and care sectors — where the threshold cut bites hardest because many staff work part-time — have been among the loudest critics.

Who actually pays? The employer writes the cheque to HMRC, but the economic incidence falls on workers through lower wages, on consumers through higher prices, or on shareholders through lower profits. The IFS concluded that around 70-80% of employer NI increases are ultimately borne by employees through slower wage growth. In plain English: your employer's 15% NI bill is partly funded by the pay rise you didn't get.

Employment Allowance: Small employers can claim up to £5,000 off their employer NI bill through the Employment Allowance. For 2026/27, this is worth up to £5,000 and is available to employers with Class 1 NI liabilities under £100,000 in the previous tax year. If you're a sole director with no other employees, you can't claim it.

Self-employed workers pay two types of National Insurance: Class 2 (a flat weekly rate of £3.65) and Class 4 (a percentage of profits). For 2026/27, Class 4 is 6% on profits between £12,570 and £50,270, falling to 2% above that.

A self-employed person earning £35,000 in annual profits pays:

• Class 2: £3.65 × 52 = £189.80
• Class 4: 6% × (£35,000 - £12,570) = £1,345.80
• Total: £1,535.60

An employee on the same gross pay would pay £1,794.40 in Class 1 NI — about £259 more. The gap exists because self-employed workers don't receive employer NI contributions (no one is paying that 15% on their behalf) and historically had fewer benefit entitlements. However, since April 2024, self-employed workers do accrue State Pension qualifying years through Class 4 alone — Class 2 is now essentially optional for those with profits above the Small Profits Threshold.

The trend: The self-employed NI advantage has narrowed significantly. In 2023/24, Class 4 was 9% (not 6%), and there was an additional 2.25% Health and Social Care Levy layer. The combined employee/employer NI burden has grown while the self-employed rate has shrunk — a deliberate policy choice to encourage entrepreneurship, but one that creates a genuine tax incentive to be self-employed rather than employed.

Directors: If you're a company director taking a combination of salary and dividends, NI interacts with your remuneration strategy. Salary above the Primary Threshold triggers employee and employer NI. Dividends don't attract NI — which is why the classic director's strategy of low salary (£12,570) plus dividends remains popular, though the dividend tax rates (8.75% basic, 33.75% higher, 39.35% additional) erode some of the advantage. See the next section for the full breakdown.

If you run your own limited company, National Insurance is the single biggest factor determining how you should pay yourself. Get it right, and you save thousands every year. Get it wrong, and you're donating unnecessarily to HMRC.

The standard strategy — and why it works: Take a salary at or just above the Primary Threshold (£12,570), and extract the rest as dividends. Here's why:

• Salary up to £12,570: £0 employee NI, £0 income tax (consumes Personal Allowance)
• Additional salary above PT: 8% employee NI + 20% income tax = 28% marginal rate, PLUS 15% employer NI
• Dividends instead of salary: 0% NI (either side) + 8.75% dividend tax (basic rate) = 8.75% marginal rate

The combined marginal rate on salary above £12,570 is effectively 43% once you add employee NI (8%), employer NI (15%), and income tax (20%). Dividends at 8.75% are less than a quarter of that.

The numbers for a director taking £50,000 total:

Salary-only route:

• Employee NI: 8% × (£50,000 - £12,570) = £2,994
• Employer NI: 15% × (£50,000 - £5,000) = £6,750
• Income tax: 20% × (£50,000 - £12,570) = £7,486
• Total tax: £17,230

Salary (£12,570) + dividends (£37,430) route:

• Employee NI: £0
• Employer NI: 15% × (£12,570 - £5,000) = £1,136
• Income tax on salary: £0
• Dividend tax: 8.75% × (£37,430 - £500 dividend allowance) = £3,231
• Corporation tax saved (19% on the salary that became a dividend): 19% × £37,430 = -£7,112 reduction in CT
• Total tax: approximately £4,367 less than salary-only (net of CT saving)

That's a saving of over £350 per month. This isn't a loophole — it's the intended design of a system that taxes employment income and investment income differently.

The trap: Take too little salary and you won't accrue a qualifying year for your State Pension. The sweet spot is salary at or above the Lower Earnings Limit (£6,708/year) but at or below the Primary Threshold (£12,570). That way you get your NI stamp without paying NI.

IR35 changes the maths entirely. If you're caught by IR35 (off-payroll working rules), you're taxed like an employee regardless of your company structure. The dividend strategy evaporates. Our self-employment tax guide covers IR35 in detail.

This section describes general principles of UK tax law. Individual circumstances vary. You should consult a qualified accountant before structuring director remuneration.

These are the NI errors we see repeatedly — and each one can cost thousands over a working lifetime.

1. Assuming your employer is handling everything. Your employer deducts NI through payroll, but they don't check your State Pension forecast or tell you about gaps. That's on you. Over 2 million people have gaps in their NI record they don't know about, according to HMRC data.

2. Not claiming NI credits you're entitled to. If you're a parent claiming Child Benefit for a child under 12, you get automatic Class 3 NI credits. If you're a registered carer for 20+ hours a week, you get credits. If you're on certain benefits including Universal Credit, you may get credits. But Child Benefit is the big one — and high-earning parents who opt out of receiving Child Benefit payments (to avoid the High Income Child Benefit Charge) often accidentally opt out of the NI credits too. You can claim the credits without receiving the payments — fill in form CF411A.

3. Paying Class 2 when you don't need to. Since April 2024, self-employed workers with profits above the Small Profits Threshold (£7,105 in 2026/27) automatically get a qualifying year through Class 4 contributions. Class 2 at £3.65/week is now mainly for those with profits between the Small Profits Threshold and the Lower Profits Limit — or those who want to accrue NI credits for other benefits. Don't pay it for pension credits you're already getting.

4. Paying Class 3 for years that won't boost your pension. Not all gaps can be filled, and not all filled gaps increase your forecast. If you were contracted out before 2016, you might need more than 35 years — and some pre-2016 years may not count. Always get a statement from the Future Pension Centre before paying.

5. Ignoring the per-job NI rule. If you have multiple jobs, each one has its own £12,570 Primary Threshold for NI (but only one Personal Allowance for income tax across all jobs). Two jobs paying £15,000 each means you pay NI of just 8% × £2,430 per job = £388.80 total — far less than one job paying £30,000, which triggers £1,394.40 in NI. The flip side: if one job pays £12,000 and another pays £60,000, you'll hit the 2% upper rate on the second job much faster.

6. Forgetting about NI after State Pension age. Yes, employee NI stops. But employer NI doesn't — and if you're self-employed, your Class 4 liability also stops. This creates an incentive to keep working past State Pension age (you keep more of what you earn) but also an incentive for employers to hire older workers (no employer NI on their earnings if they're over State Pension age — actually, check this: employer NI is still payable, the exemption only applies to the employee side).

Correcting any one of these errors can add thousands to your retirement income. The State Pension forecast is the starting point for all of them.

National Insurance rates have been on a rollercoaster since 2022. Understanding where we've been helps you understand where we might be going — and who's been picking up the tab.

The story in this chart: employee NI was cut twice in early 2024 (from 12% to 10% in January, then to 8% in April). Self-employed Class 4 was cut from 9% to 8% then to 6%. Both are political cuts dressed as tax simplification — but they coincided with fiscal drag pulling more people into higher brackets as thresholds froze.

Meanwhile, employer NI went the other direction — up from 13.8% to 15% in the Autumn Budget 2024, with the threshold halved. The net effect: the tax burden shifted from visible employee deductions to invisible employer costs. Workers saw their payslip NI go down. Employers saw their payroll costs go up. Economics says those two things are the same thing in the long run.

What's frozen: The Primary Threshold (£12,570) and Upper Earnings Limit (£50,270) have been frozen since 2022/23 and are scheduled to remain frozen until at least April 2028. That's six years of fiscal drag — pulling more people into paying NI, and more people into the full 8% rate, as wages rise with inflation.

If your salary was £48,000 in 2022/23 and is now £54,000 in 2026/27 (roughly tracking inflation), your NI bill has gone from about £2,365 to about £3,034 — a 28% increase — even though the headline rate fell from 12% to 8%. Fiscal drag is the tax rise nobody votes on.