How Much National Insurance Should I Pay? UK 2026/27 Guide

How Much National Insurance Should I Pay on My Salary?

The following examples use the 2026/27 rates and show annual, monthly, and weekly National Insurance for a range of common salaries. These are employee Class 1 NI figures only. You can verify these using our National Insurance calculator for your exact figures.

£20,000 Salary

NI is charged at 8% on the portion of earnings between £12,570 and £20,000.

• NI-liable earnings: £20,000 minus £12,570 = £7,430
• Annual NI: 8% of £7,430 = £594.40
• Monthly NI: approximately £49.53
• Weekly NI: approximately £11.43

£30,000 Salary

• NI-liable earnings: £30,000 minus £12,570 = £17,430
• Annual NI: 8% of £17,430 = £1,394.40
• Monthly NI: approximately £116.20
• Weekly NI: approximately £26.82

£40,000 Salary

• NI-liable earnings: £40,000 minus £12,570 = £27,430
• Annual NI: 8% of £27,430 = £2,194.40
• Monthly NI: approximately £182.87
• Weekly NI: approximately £42.20

£50,000 Salary

At £50,000, all earnings remain below the Upper Earnings Limit of £50,270, so the full amount above £12,570 is taxed at 8%.

• NI-liable earnings: £50,000 minus £12,570 = £37,430
• Annual NI: 8% of £37,430 = £2,994.40
• Monthly NI: approximately £249.53
• Weekly NI: approximately £57.58

£75,000 Salary

At £75,000, earnings cross the Upper Earnings Limit of £50,270. NI is split across two bands.

• Band 1 (8%): £50,270 minus £12,570 = £37,700. NI = £3,016
• Band 2 (2%): £75,000 minus £50,270 = £24,730. NI = £494.60
• Annual NI total: £3,016 + £494.60 = £3,510.60
• Monthly NI: approximately £292.55
• Weekly NI: approximately £67.51

It is worth noting that the jump in take-home pay between £50,000 and £75,000 is greater than it might appear, because NI drops from 8% to 2% on earnings above £50,270. The effective NI burden does not keep rising in the same way income tax does.

Summary Table: Annual NI by Salary (Employee, 2026/27)

The effective rate actually falls at £75,000 compared to £50,000 because the 2% band kicks in and covers a large portion of those higher earnings. For a complete picture of take-home pay at your salary, including both income tax and National Insurance, use our income tax calculator.

National Insurance for Self-Employed Workers

Self-employed workers pay National Insurance differently from employees. Rather than automatic monthly deductions through PAYE, self-employed NI is calculated annually as part of your self assessment tax return and paid to HMRC alongside income tax. Our self-employed tax calculator can show you a combined estimate of income tax and NI based on your profit level.

Class 4 NI for Self-Employed Workers

Class 4 is the main National Insurance charge for self-employed workers. It applies to your annual profit, not gross turnover. The rates for 2026/27 are:

• 6% on profits between £12,570 and £50,270
• 2% on profits above £50,270

Note that the Class 4 rate is lower than the employee Class 1 rate (6% versus 8% in the main band). This reflects the fact that self-employed workers do not have employers matching their contributions. However, self-employed workers also do not accumulate entitlement to Statutory Sick Pay or Statutory Maternity Pay in the same way employees do.

Class 2 Contributions

From April 2024, Class 2 NI is no longer mandatory. For 2026/27, if your profits exceed the Small Profits Threshold of £7,105, HMRC treats Class 2 contributions as credited automatically, protecting your State Pension and benefit entitlement at no cost. If your profits fall below £7,105, you can choose to pay voluntary Class 2 contributions at £3.65 per week to keep your record intact. This is worth doing if you are close to State Pension age and have gaps you want to fill.

Self-Employed NI Example

Suppose you are a freelance graphic designer with annual profits of £38,000 after expenses.

• Class 4 NI at 6%: £38,000 minus £12,570 = £25,430. NI = £1,525.80
• Class 2: credited automatically (profits above £7,105)
• Total NI for the year: £1,525.80

Compare this with an employee on £38,000, who would pay 8% on the same band, giving £2,034.40 in Class 1 NI. The self-employed saving on NI is £508.60 per year in this case. For the full income tax and NI breakdown on any self-employment income, our self-employed tax calculator handles both calculations together.

When Self-Employed NI Is Paid

Class 4 NI is paid as part of your self assessment tax bill. The payment schedule is:

• 31 January following the end of the tax year (balancing payment)
• 31 July (second payment on account, where applicable)

If your tax bill exceeds £1,000 and more than 80% was not collected at source, HMRC will require you to make payments on account for the following year. This means your January payment may be larger than just the previous year's liability. For a full explanation of the self assessment process, see our self assessment complete guide.

Why Your National Insurance Changes Month to Month

Many people notice their National Insurance varies even when their salary stays the same, or jumps significantly in months where they receive a bonus or overtime. Here is why that happens.

Salary Increases

A pay rise moves more of your earnings into the 8% NI band, or potentially above the Upper Earnings Limit into the 2% band. The increase in NI is proportional and usually modest compared with income tax, but it is noticeable on your payslip.

Bonuses and Overtime

Bonuses and overtime are paid on top of your regular salary in a single pay period. National Insurance is calculated on each pay period's gross earnings independently. A bonus of £3,000 paid in a single month effectively pushes your monthly NI-liable earnings up sharply, even though your annual salary has not changed. This can result in a noticeably higher NI deduction in that month.

Multiple Jobs

If you have two jobs, each employer applies the NI thresholds to the earnings from that job alone. They do not know about each other's payments. This can mean you pay less NI than you should if both jobs individually fall below the Primary Threshold, or occasionally that you overpay if both jobs separately apply the threshold without coordinating. HMRC reconciles multiple-job NI situations after the tax year and issues refunds where overpayments occurred. Our guide to National Insurance explained for employees covers multiple job situations in more detail.

Payroll Period Differences

The Primary Threshold is applied on a per-period basis. For a monthly-paid employee, that threshold is £1,047.50 per month. For a weekly-paid employee, it is £241.73 per week. If your pay periods are irregular or you receive backdated pay, the threshold for that specific period applies, which can produce an unusual NI figure that is technically correct.

Tax Year Changes

Changes in NI rates or thresholds announced in the Budget or Autumn Statement take effect from 6 April each year. April payslips often show different NI deductions from March simply because the new tax year's rules have come into effect. This is normal and expected.

National Insurance vs Income Tax

National Insurance and income tax both appear on your payslip and both reduce your take-home pay, but they work differently and serve different purposes. Many workers treat them as interchangeable when checking their deductions, which can lead to confusion when one changes and the other does not.

One of the most significant differences becomes apparent at higher incomes. While income tax increases to 40% above £50,270 and then to 45% above £125,140, National Insurance actually falls to just 2% above £50,270 and stays at 2% no matter how high your earnings go. This is why the combined effective deduction rate for a very high earner is lower for NI than for income tax.

Another practical difference: National Insurance does not apply to pension income, savings interest, dividends, or rental income. Income tax applies to all of these. For anyone with income from multiple sources, the distinction matters for planning purposes.

How to Check Your National Insurance Contributions

Verifying your National Insurance contributions is straightforward through a few different channels.

Your Payslip

Your payslip should show the amount of National Insurance deducted for the current period and the cumulative total for the year to date. The deduction line is usually labelled NI or National Insurance. Understanding how to read your payslip properly is the first step to catching errors. Our PAYE payslip guide covers each line in detail.

Your HMRC Personal Tax Account

At gov.uk/personal-tax-account, you can log in with your Government Gateway details and check your National Insurance record. This shows each tax year going back to when you first started contributing, whether each year is complete or has a gap, and how many qualifying years you have accumulated.

Your National Insurance Record and State Pension Forecast

The Check Your State Pension tool at gov.uk/check-state-pension uses your NI record to show you a personalised State Pension forecast. It tells you how many qualifying years you currently have, how many more you need for the full new State Pension (35 years), and when you are expected to reach State Pension age. This is particularly useful for anyone who has had periods of self-employment, breaks from work, or years of lower earnings.

Identifying Gaps

A gap year in your NI record means that year does not count toward your State Pension. Gaps can arise from periods of unemployment, self-employment below the Small Profits Threshold, being abroad, or simply earning below the Lower Earnings Limit without receiving NI credits. HMRC allows you to buy back certain gap years with voluntary Class 3 contributions (£17.45 per week in 2026/27), though there are time limits and not all years are worth filling. It is worth checking before assuming gaps need to be addressed.

What Happens If You Pay Too Much or Too Little NI?

Overpayments

Overpaying National Insurance most often happens when you have multiple jobs. If each employer deducts NI based on their own employment records without knowledge of your other jobs, you may end up paying NI below the Primary Threshold multiple times, or paying the full 8% rate across a higher combined total than the single-job calculation would produce. HMRC reconciles this after the tax year and issues a refund. You can also contact HMRC during the year if you believe you are overpaying.

Underpayments

Underpaying NI is less common for employees, since PAYE handles deductions automatically. Self-employed workers are more at risk of underpaying if they underestimate their profit for the year or file their self assessment late.

Effect on Benefits and State Pension

The impact of gaps in your NI record on the State Pension is real and financially significant. Missing a single qualifying year, where a year counts as complete if you have paid or been credited with NI on earnings of at least £6,396, reduces your eventual State Pension by around one thirty-fifth of the full amount. Over decades, a few gap years can mean a meaningfully lower weekly pension income in retirement.

Can You Reduce National Insurance Legally?

There are legitimate ways to reduce National Insurance, most of which involve structuring your remuneration in ways that HMRC does not treat as earnings in the traditional sense.

Salary Sacrifice Arrangements

Salary sacrifice means agreeing to take a lower gross salary in exchange for a non-cash benefit. Common examples include workplace pension contributions, childcare vouchers, cycle-to-work schemes, and electric car leasing. Because your contractual gross pay is reduced, both your income tax and your National Insurance liability fall. This is fully permitted by HMRC and is widely used by employers as a cost-effective way to enhance benefits packages.

The NI saving on salary sacrifice is particularly valuable. If you sacrifice £5,000 of salary into a pension, you save 8% NI on that £5,000, which is £400 per year, on top of the income tax saving. Your employer also saves 15% employer NI on the sacrificed amount, which is why many employers are willing to pass some of that saving to employees.

Pension Contributions Outside Salary Sacrifice

If you make personal pension contributions directly, those are tax-relieved for income tax purposes but do not reduce National Insurance. Only salary sacrifice reduces both. This is an important distinction when comparing pension funding options.

Business Structure for Self-Employed Workers

Self-employed sole traders pay Class 4 NI at 6% in the main band. Directors of limited companies who pay themselves a small salary and take the rest as dividends pay Class 1 NI only on the salary portion, and dividends carry no National Insurance liability at all. This is a legitimate difference in how the tax system treats different business structures, but it comes with other obligations, including corporation tax, dividend tax, and additional accountancy costs. Our self-employed tax calculator allows you to model sole trader figures, and our self assessment guide covers the reporting requirements for each structure.

Common National Insurance Mistakes

A number of straightforward errors come up regularly among employees and self-employed workers when it comes to National Insurance.

Confusing NI With Income Tax

When checking a payslip, many people see a combined deduction and mentally group NI and income tax together. This makes it difficult to spot an error in either. Check each line separately and compare it with what the correct figure should be for your salary. Our income tax calculator shows both deductions side by side so you can cross-reference each one.

Ignoring NI Record Gaps

Many workers do not check their NI record until they approach retirement, by which point filling gap years may be time-limited or no longer possible. Checking your record every few years through your HMRC personal tax account costs nothing and can highlight issues early enough to address them.

Multiple Job Overpayments Going Unclaimed

Workers with more than one job sometimes assume any overpayment will sort itself out, which it usually does through the annual reconciliation process. However, if you have significantly overpaid, contacting HMRC during the year and requesting a refund in-year is faster than waiting for the end-of-year process.

Missing Self-Assessment NI Obligations

Self-employed workers who are new to self assessment sometimes focus only on income tax and overlook Class 4 NI. Class 4 is calculated automatically when you complete your self assessment return, but if you have been estimating your tax liability manually or using an incomplete tool, you may be underprepared for the actual bill. Always account for both income tax and Class 4 NI when setting aside money from your self-employment income.

Assuming NI Stops With Retirement Age Immediately

National Insurance stops when you reach State Pension age, but your employer does not automatically know your date of birth. If you have recently passed State Pension age and NI is still being deducted from your payslip, inform your employer's payroll department and provide evidence of your age. Any NI deducted after State Pension age is refundable.

Final Thoughts

National Insurance is one of those deductions that most people pay without giving it much thought, but it is worth understanding properly. The amount you pay is tied directly to your earnings and employment type, and the contributions you make throughout your working life have a direct bearing on your future State Pension and benefit entitlement.

For employees, the key thresholds in 2026/27 are straightforward: you pay 8% on earnings between £12,570 and £50,270, and 2% above that. For self-employed workers, the Class 4 rate is slightly lower at 6% in the main band. Both groups stop paying National Insurance once they reach State Pension age at 66.

Checking your payslip regularly, understanding how bonuses and overtime affect your NI in a given month, and keeping an eye on your NI record for gaps will put you in a much stronger position, both for managing your current take-home pay and for protecting your State Pension further down the line.

To see the exact National Insurance and income tax deductions for your salary, use our National Insurance calculator or the full income tax calculator which shows both deductions together. If you are self-employed, our self-employed tax calculator handles Class 4 NI and income tax in one calculation. And for those wanting to understand how NI sits alongside their full payslip deductions, our guide to reading a PAYE payslip covers every line you will encounter.

Official Sources and Further Reading

GOV.UK Official Guidance:

• National Insurance rates and thresholds - Official rates for employees and employers
• Self-employed National Insurance - Class 2 and Class 4 guidance
• Check your National Insurance record - View your contributions online
• State Pension - How your NI record affects your pension

This guide provides general information about National Insurance for 2026/27. Individual circumstances vary. For personalised advice about your specific situation, consult a qualified tax adviser or accountant. Always check GOV.UK for current rates and guidance.