Question 1

What is National Insurance in the UK?

Accepted Answer

National Insurance (NI) is a tax on earnings and self-employed profits that funds state benefits including the State Pension, NHS, statutory sick pay, maternity pay, and unemployment support. It was introduced by the National Insurance Act 1911 under Lloyd George as part of the Liberal welfare reforms, becoming the foundation of the welfare state.

Question 2

How many qualifying years do I need for the full State Pension?

Accepted Answer

You need 35 qualifying years of National Insurance contributions to receive the full new State Pension (£230.25/week in 2025/26). You need at least 10 qualifying years to receive any State Pension at all. Gaps in your NI record can be filled by paying voluntary Class 3 contributions (£17.45/week in 2025/26).

Question 3

What are the National Insurance thresholds for 2025/26?

Accepted Answer

For employees: no NI below the Primary Threshold of £12,570/year. NI at 8% from £12,570 to the Upper Earnings Limit of £50,270. NI at 2% above £50,270. For employers: 15% on earnings above the Secondary Threshold of £5,000/year — the rate rose from 13.8% and the threshold dropped from £9,100 on 6 April 2025, and is frozen at £5,000 until April 2028.

Question 4

What is the difference between Class 1, 2, 3, and 4 NI?

Accepted Answer

Class 1: paid by employees and employers on wages. Class 1A/1B: employers pay on benefits in kind and PAYE settlements. Class 2: flat-rate weekly contribution paid by the self-employed (£3.45/week in 2025/26). Class 3: voluntary contributions to fill NI record gaps (£17.45/week). Class 4: percentage-based contribution paid by self-employed on profits.

Question 5

Can I check my National Insurance record?

Accepted Answer

Yes. You can view your NI record, see gaps, and get a State Pension forecast through your Personal Tax Account at gov.uk/check-national-insurance-record. You can also call HMRC's NI helpline. It shows contributions by year and whether each year is a qualifying year for State Pension purposes.

Question 6

What happens if I have gaps in my NI record?

Accepted Answer

You can fill gaps by paying voluntary Class 3 NI contributions. You generally have 6 years to fill gaps, but you can pay for gaps going back to 2006 until April 2025 (extended deadline). Check the cost of filling each gap against your State Pension increase — for most people it provides an excellent return on investment.

Question 7

Do I still pay NI after State Pension age?

Accepted Answer

No. Employees and self-employed people stop paying National Insurance once they reach State Pension age, even if they continue working. Employers, however, continue paying employer's Class 1 NI on the wages of employees who are past State Pension age.

Question 8

What is Employers NI and who pays it?

Accepted Answer

Employers pay Class 1 NI at 15% (raised from 13.8% on 6 April 2025) on employee earnings above £5,000/year. This is entirely separate from the employee's NI and is paid on top of wages — it represents the true employment cost above the salary itself. For a £50,000 salary, employer NI adds approximately £6,750 in additional cost.

Question 9

How does NI affect the self-employed differently?

Accepted Answer

Self-employed people pay Class 2 (flat £3.45/week if profits exceed £12,570) plus Class 4 (6% on profits between £12,570–£50,270, then 2% above). This is typically lower than the combined employee/employer NI rate. However, self-employed people historically received fewer benefits — maternity allowance rather than statutory maternity pay, for example.

Question 10

What is the Employment Allowance for NI?

Accepted Answer

The Employment Allowance allows eligible employers to reduce their employer NI liability by up to £10,500 per year (raised from £5,000 on 6 April 2025, when the £100,000 employer NI liability eligibility cap was also removed). Most businesses with at least one employee (other than the sole director) qualify. Single-director companies with no other employees are excluded.

Question 11

How is NI calculated on benefits in kind?

Accepted Answer

Employers pay Class 1A NI at 15% (raised from 13.8% on 6 April 2025) on most benefits in kind (company cars, private medical insurance, etc.) via the annual P11D process. Some benefits (mobile phones, workplace canteen, pension contributions) are NI-exempt. The value of the benefit uses specific HMRC rules, not necessarily the market value.

Question 12

What is the Married Women's Reduced Rate NI?

Accepted Answer

Historically, married women could elect to pay a reduced NI rate (the "small stamp") of 5.85% instead of the full rate. This election was abolished for new applicants in 1977 but existing electors were protected. Women who paid the reduced rate built up no State Pension entitlement of their own. By 2025, fewer than 5,000 women remain on this election.

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