National Insurance Calculator 2026-27
Calculate your Class 1 National Insurance contributions as an employee for the 2026/27 tax year.
By Konstantin Iakovlev · Founder, Calks.uk
Last updated: · Verified against HMRC and GOV.UK 2026/27 rates
Quick Answer
UK employee National Insurance (Class 1) in 2026/27 is 8% on earnings between £12,570 and £50,270, then 2% above £50,270. There is no NI below the £12,570 Primary Threshold.
Disclaimer
This calculator is provided for informational purposes only and should not be considered as financial or tax advice. All calculations are performed locally in your browser — no personal data is collected or sent to our servers. Rates and thresholds are sourced from HMRC and GOV.UK and are updated for the current tax year. Always verify results with HMRC or consult a qualified professional before making financial decisions.
How It Works
Class 1 Employee National Insurance is charged on earnings above the Primary Threshold of £12,570 per year. For the 2026/27 tax year, the rate is 8% on earnings between £12,570 and £50,270 (the Upper Earnings Limit), then 2% on everything above £50,270.
NI is calculated on a per-pay-period basis, so weekly and monthly thresholds differ slightly from the annual figures. This calculator uses annualised thresholds for simplicity, which gives results that match HMRC's annual calculation to within a few pence.
You stop paying employee NI when you reach State Pension age, even if you continue working. The calculator assumes you are below State Pension age.
Why Class 1 NI is structured the way it is. Employee NI was originally designed to fund contributory benefits (State Pension, ESA, JSA). The 8% main rate on £12,570-£50,270 (Primary Threshold to Upper Earnings Limit) reflects the principle that NI taps middle earnings most heavily. Above £50,270 the rate drops to 2% — historically because higher earners already pay 40% income tax and the regressive design dampens it. Earnings between £6,708 (LEL) and £12,570 (PT) pay no cash NI but earn qualifying years toward State Pension.
The 2024 NI rate cut and what changed. Until November 2023 the main rate was 12%; then 10% (Jan 2024); then 8% (April 2024). The cuts were estimated to save median earners around £450-£900/year. The Conservative government framed these as personal-tax cuts; critics noted that frozen thresholds (Personal Allowance, Higher Rate threshold) created 'fiscal drag' that offset most of the rate cuts. As of 2026/27 the 8% rate remains; freezing continues until at least April 2028 under current policy.
NI after State Pension age. You stop paying employee NI on or after your State Pension age (currently 66, rising to 67 between 2026-2028). You still pay income tax. Employers continue to pay employer NI on your earnings regardless of your age. You can request HMRC form CA4140 to get a refund if your employer incorrectly continues deducting NI after pension age. Self-employed Class 4 NI also stops at pension age (Class 2 was abolished April 2024).
Contracted-out vs current arrangements. Pre-April 2016 you could be 'contracted out' of the additional State Pension (SERPS/S2P) in exchange for a lower NI rate. This ended with the new flat-rate State Pension. If you contracted out before 2016, your State Pension may include a 'Contracted-Out Deduction' but you may also have an additional defined benefit/contribution scheme that replaced the additional pension. Check your State Pension forecast at gov.uk/check-state-pension to see your exact entitlement.
Example: £35,000 annual salary
- Earnings below Primary Threshold (£12,570): £0 NI
- Earnings £12,571–£35,000 at 8%: £22,430 × 0.08 = £1,794.40
- Total NI: £1,794.40 per year (£149.53/month)
Frequently Asked Questions
- UK NI rates 2026/27.
- Employee Class 1: 8% on earnings £12,570-£50,270, then 2% above £50,270. Employer Class 1 (secondary): 15% on earnings above £5,000 Secondary Threshold (raised from 13.8% / £9,100 in April 2025). Self-employed Class 4: 6% on profits £12,570-£50,270, then 2% above. Class 2 abolished from 6 April 2024 — no longer payable. Employment Allowance £10,500/year reduces employer Class 1 NI for eligible small employers.
- Why am I paying NI but my colleague isn't?
- Possible reasons: (1) You earn over £12,570 PT, they don't; (2) They're above State Pension age (66) so exempt; (3) Different NI category (apprentices under 25, married women's reduced rate pre-1977); (4) Salary sacrifice reduces their pay below thresholds; (5) Statutory absence (SMP, SSP) — pay reduced but NI still on earnings; (6) Working overseas under bilateral agreement.
- How NI builds State Pension entitlement.
- 35 qualifying NI years needed for full State Pension (£241.30/week in 2026/27). Each year of NI = ~£6.89/week added to pension. Years you pay NI count automatically. NI credits (without payment) available if: receiving Child Benefit (until youngest is 12), Universal Credit, Carer's Allowance, Jobseeker's Allowance, Statutory Sick Pay, or earning between Lower Earnings Limit £6,708 and Primary Threshold £12,570. Check at gov.uk/check-state-pension.