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UK National Insurance Calculator

See how much employee National Insurance you pay in the 2026/27 tax year — split by band, with monthly and weekly figures.

Your earnings

£

Your gross annual earnings subject to Class 1 employee National Insurance.

Employee National Insurance for 2026/27 Effective rate —
£—
8% (up to £50,270)£—
2% (above £50,270)£—
Earnings below the threshold (no NI)£—
Per month £— · Per week £—
Class 1 employee rates (category A). National Insurance is the same UK-wide, including Scotland.

National Insurance rates and thresholds apply to the 2026/27 tax year (6 April 2026 – 5 April 2027). Source: GOV.UK — Rates and allowances: National Insurance contributions. Rules and thresholds can change — check the latest official guidance before making financial decisions.

How it works

Enter your annual earnings and the calculator works out your Class 1 employee National Insurance for 2026/27. You pay nothing on earnings up to the Primary Threshold (£12,570), then 8% on earnings between £12,570 and £50,270, and 2% on anything above £50,270. The result shows each band separately plus your monthly and weekly contributions.

Example calculation

For annual earnings of £50,000 in 2026/27:

  • Earnings below the Primary Threshold: £12,570 — no NI
  • 8% on £50,000 − £12,570 = £37,430: £2,994.40
  • 2% band: £0 (earnings not above £50,270)
  • Total National Insurance: ≈ £2,994.40 a year, about £250 a month and £58 a week
  • Effective rate: about 6% of earnings

Example is for 2026/27 Class 1 employee rates (category A). Income Tax is separate — use the UK Salary Calculator for full take-home pay.

Methodology & formula

Employee National Insurance (Class 1, category A) is calculated on gross earnings as:

NI = 8% × (min(E, UEL) − PT) + 2% × max(0, E − UEL)
  • E = gross annual earnings
  • PT = Primary Threshold = £12,570 (where employees start paying)
  • UEL = Upper Earnings Limit = £50,270 (where the 2% rate starts)

Unlike Income Tax, National Insurance is charged on gross earnings, not on income above a Personal Allowance. Monthly = annual ÷ 12; weekly = annual ÷ 52.

Assumptions: standard Class 1 rates for a non-deferred employee (category A). It ignores married women's reduced rate, deferred contributions, directors' rules and the self-employed (Class 2/4) regime.

UK-specific information

  • Class 1 employee: 8% between the Primary Threshold and Upper Earnings Limit, 2% above. Rates and thresholds are frozen until at least April 2031 (only the Lower Earnings Limit changes). GOV.UK · 2026/27
  • Primary Threshold: £12,570 a year (£242 a week / £1,048 a month) — below this, no employee NI. GOV.UK · 2026/27
  • Upper Earnings Limit: £50,270 a year (£967 a week / £4,189 a month) — above this, only 2%. GOV.UK · 2026/27
  • Self-employed: Class 4 NI is 6% on profits between £12,570 and £50,270 and 2% above; there is also a flat Class 2 rate. This calculator covers employees only.
  • National Insurance is UK-wide — unlike Income Tax, it does not differ in Scotland.

Frequently asked questions

Do I pay National Insurance on my whole salary?
No. Employee National Insurance starts once earnings pass the Primary Threshold (£12,570/year in 2026/27) and drops from 8% to 2% above the Upper Earnings Limit (£50,270/year).
Is National Insurance the same as Income Tax?
No. Income Tax uses your Personal Allowance and 20/40/45% bands; National Insurance is charged on gross earnings at 8% and 2% and is calculated independently. Both are usually deducted through PAYE.
Does National Insurance count towards my pension?
Yes. Paying NI builds your National Insurance record, which counts towards the State Pension. You need roughly 35 qualifying years for the full new State Pension.
Do self-employed people pay National Insurance?
Yes, but differently — Class 4 on profits (6% between £12,570 and £50,270, 2% above) plus a flat Class 2 rate. This calculator covers employees (Class 1).
Why do I pay less NI above £50,270?
The Upper Earnings Limit caps the 8% rate. Above £50,270 you pay only 2%, so National Insurance is effectively capped — unlike Income Tax, which keeps rising.
Will National Insurance rates change soon?
For 2026/27 the rates (8% and 2%) and thresholds are frozen until at least April 2031, except the Lower Earnings Limit. Always check the latest official guidance.

Related calculators

UK Salary Calculator · UK Income Tax Calculator · UK Savings Calculator · Home

Sources

  • GOV.UK — Rates and allowances: National Insurance contributions: gov.uk (accessed 2026, 2026/27 tax year)
  • House of Commons Library — Direct taxes: Rates and allowances for 2026/27: commonslibrary.parliament.uk

Casvia provides educational calculators and general information. It does not provide personal financial, tax or investment advice. Rules and thresholds can change — always check the latest official guidance.