Finance · 6 min read

UK National Insurance Rates 2026/27

National Insurance shows up on almost every UK payslip, right next to income tax, but the two work very differently. Understanding that difference, and how NI connects to your future State Pension, matters more than any single number, which changes from one tax year to the next anyway. For your exact deduction, use our take-home pay calculator.

National Insurance is not income tax

Income tax goes into general government revenue and pays for everything from the NHS to defence to schools. National Insurance is structurally different: it's a contributions system that funds specific benefits, most notably the State Pension, along with certain other welfare benefits. That's why your National Insurance record, not just how much tax you've paid, determines things like your State Pension eligibility later in life.

Who actually pays it

Three groups can pay National Insurance: employees, employers, and self-employed people. Employees have it deducted automatically through PAYE alongside income tax. Employers also pay their own separate NI contribution on top of what they pay you, which is a cost to the business rather than something deducted from your pay. Self-employed people pay NI themselves, generally worked out through Self Assessment rather than automatic deduction.

The Primary Threshold: pay nothing below it, a percentage above it

There's a threshold, generally called the Primary Threshold for employees, below which no National Insurance is due at all. Once your earnings go above that threshold, NI is charged as a percentage of the amount above it. We're intentionally not stating a specific pound threshold or percentage rate here, since both are reviewed and can be changed by the government each tax year. Check gov.uk for the current figures, or run your own salary through our take-home pay calculator to see the actual deduction applied to your pay.

Class 1 versus Class 2 and Class 4

The class system separates how NI applies to different groups. Class 1 is what employees pay, deducted through PAYE, with employers paying a related but separate contribution on top. Self-employed people generally deal with Class 2 and Class 4 instead, both handled through Self Assessment rather than payroll deduction, and structured differently from Class 1. If you're moving between employment and self-employment, or doing both at once, it's worth understanding which class applies to which income so nothing gets missed on your return.

Why National Insurance is really about more than take-home pay

It's easy to think of NI purely as a deduction that reduces your payslip, similar to income tax, but that misses half the picture. Every qualifying year of National Insurance contributions or credits builds toward your entitlement to the State Pension. Most people need a substantial number of qualifying years, commonly cited as 35, to get the full new State Pension, with a lower minimum needed to get any pension at all. For the full breakdown of how qualifying years work, see our state pension guide.

Gaps in your NI record

Periods of low income, unemployment, or time spent caring for someone can leave gaps in your National Insurance record if you're not earning enough to pay it or receiving credits automatically. Some situations, such as claiming certain benefits or receiving Child Benefit for a young child, generate NI credits that fill these gaps without you paying anything directly. It's worth periodically checking your National Insurance record on gov.uk to spot any gaps early, since you may be able to fill older gaps with voluntary contributions.

Seeing your own numbers

Because NI thresholds and rates move with government policy, the most reliable way to know exactly what you'll pay is to calculate it against the current year's figures rather than relying on a number you saw somewhere else. Our take-home pay calculator applies the current thresholds and rates automatically, showing your National Insurance deduction alongside income tax so you can see your true monthly take-home in one place.

Recap

National Insurance is a separate deduction from income tax, funding specific benefits like the State Pension rather than general spending. There's a threshold below which nothing is due, above which a percentage applies, and the exact figures are reviewed annually so check gov.uk or our take-home pay calculator for the current numbers. Beyond your payslip, your NI record quietly determines your future State Pension entitlement, which makes keeping an eye on it worthwhile even when your current pay isn't your main concern.

Frequently asked questions