How UK Pensions Work

The Three Pillars of UK Pensions

The UK pension system rests on three pillars. Understanding how they fit together is the first step to planning your retirement income.

• State pension: A flat-rate weekly payment from the government, based on your National Insurance record. It provides a basic income but is rarely enough to live comfortably on.
• Workplace pension: A pension arranged by your employer, with contributions from both you and your employer. Since auto-enrolment was introduced, almost all employees are enrolled in one of these.
• Personal pension: A pension you set up yourself, such as a Self-Invested Personal Pension (SIPP). Anyone can contribute to one regardless of employment status.

Most people will rely on a combination of all three. The state pension provides a foundation, your workplace pension builds on top of it, and a personal pension can fill any remaining gap.

Auto-Enrolment

Since 2012, employers have been legally required to enrol eligible workers into a workplace pension scheme. This is called auto-enrolment, and it has dramatically increased the number of people saving for retirement.

You are eligible for auto-enrolment if you are:

• Aged between 22 and state pension age
• Earning at least £10,000 per year
• Working in the UK

If you are under 22 or earn less than £10,000, you can still ask to join your employer’s scheme. Your employer must allow you to join and must contribute if your earnings are above the lower qualifying earnings threshold of £6,240.

Minimum Contribution Rates

The minimum total contribution into an auto-enrolment pension is 8% of qualifying earnings (earnings between £6,240 and £50,270). This is split as follows:

Many employers go beyond the minimum. Some match your contributions up to a certain percentage, and others offer fixed contributions regardless of what you pay in. Check your scheme details — you may be leaving money on the table if you are not contributing enough to get the full employer match.

Pension Tax Relief Explained

Pension tax relief is the biggest incentive to save into a pension. When you contribute to a pension, the government effectively refunds the income tax you paid on that money. This makes pensions far more tax-efficient than saving into an ISA or a standard savings account.

There are two methods of delivering tax relief, and which one applies depends on how your employer’s scheme is set up.

Relief at Source

Under relief at source, your pension contribution is taken from your net (after-tax) pay. The pension provider then claims basic rate tax relief (20%) from HMRC and adds it to your pension pot. If you are a basic-rate taxpayer, this means a £100 pension contribution only costs you £80.

If you are a higher-rate (40%) or additional-rate (45%) taxpayer, you can claim the extra tax relief through your Self Assessment tax return. A £100 contribution effectively costs a higher-rate taxpayer £60 and an additional-rate taxpayer £55.

Net Pay Arrangement

Under a net pay arrangement, your contribution is deducted from your gross pay before income tax is calculated. This means you automatically receive full tax relief at your marginal rate, whether you are a basic, higher, or additional-rate taxpayer. There is nothing to claim separately.

The downside of net pay is that if you earn below the personal allowance, you do not get the 20% tax relief that you would receive under relief at source. The government has introduced a top-up payment to address this from 2025/26.

Salary Sacrifice

Salary sacrifice (sometimes called “salary exchange”) is an arrangement where you agree to reduce your contractual salary, and your employer pays the difference directly into your pension. Because your gross salary is lower, you save both income tax and National Insurance on the sacrificed amount. Your employer also saves on employer NI.

For example, if you earn £50,000 and sacrifice £5,000 into your pension, you pay income tax and NI on £45,000 instead of £50,000. The combined saving for a higher-rate taxpayer would be:

• Income tax: 40% × £5,000 = £2,000
• Employee NI: 2% × £5,000 = £100 (already above UEL)
• Total employee saving: £2,100
• Employer NI saving: 15% × £5,000 = £750

Many employers share their NI saving by adding it to your pension, making salary sacrifice even more attractive. You can model this using our pension calculator.

The Annual Allowance

There is a limit on how much you can contribute to pensions each year while still receiving tax relief. For 2025/26, the annual allowance is £60,000 or 100% of your earnings, whichever is lower. This covers the total of your contributions and your employer’s contributions.

If you exceed the annual allowance, you face an annual allowance charge. This effectively claws back the tax relief on the excess, so there is no benefit to over-contributing.

Carry Forward

If you did not use your full annual allowance in the previous three tax years, you can carry the unused amount forward. This is useful if you receive a large bonus or windfall and want to make a one-off pension contribution. You must have been a member of a registered pension scheme in each year you are carrying forward from.

Tapered Annual Allowance

If your adjusted income exceeds £260,000, your annual allowance is reduced by £1 for every £2 above that threshold. The minimum tapered allowance is £10,000, which kicks in at an adjusted income of £360,000. Threshold income must also exceed £200,000 for the taper to apply.

The Lifetime Allowance — Abolished

The lifetime allowance (LTA) was a cap on the total amount you could build up in pensions over your lifetime without facing a tax charge. It was effectively abolished from 6 April 2024. While some transitional rules remain (particularly around tax-free lump sum limits), there is no longer a lifetime limit on pension savings.

The tax-free lump sum is now capped at £268,275 for most people (25% of the old £1,073,100 lifetime allowance). Existing protections may give some individuals a higher limit.

Types of Workplace Pension

There are two main types of workplace pension:

Defined Contribution (DC)

This is by far the most common type for private sector employees. You and your employer contribute to a pension pot, which is invested in funds you choose (or a default fund chosen by the scheme). The amount you end up with depends on how much goes in and how the investments perform. There is no guarantee of a specific income in retirement.

Defined Benefit (DB)

Also known as a final salary or career average pension, this type promises a specific income in retirement based on your salary and years of service. DB pensions are increasingly rare in the private sector due to their cost, but they are still common in the public sector (NHS, teachers, civil service, local government).

DB pensions are generally more valuable than DC pensions because the employer bears the investment risk. If you have a DB pension, think very carefully before transferring out of it.

Personal Pensions and SIPPs

A personal pension is one you set up yourself, independent of your employer. A Self-Invested Personal Pension (SIPP) is a type of personal pension that gives you a wider choice of investments, including individual shares, funds, investment trusts, and bonds.

Personal pensions are useful if:

• You are self-employed and do not have a workplace pension
• You want to consolidate old workplace pensions into one place
• You want more investment choice than your workplace scheme offers
• You want to make additional contributions beyond your workplace pension

Contributions to a personal pension receive tax relief at source — the provider claims 20% from HMRC, and higher-rate taxpayers claim the rest through Self Assessment.

The State Pension

The state pension is a regular payment from the government that you receive when you reach state pension age. It is funded by National Insurance contributions from current workers — it is not a savings pot.

State Pension Age

The current state pension age is 66 for both men and women. It is scheduled to increase to 67 between May 2026 and March 2028. A further increase to 68 is planned, though the exact timing is subject to government review.

How Much Is It?

The full new state pension for 2025/26 is £230.25 per week, which is about £11,973 per year. This is the maximum you receive if you have 35 qualifying years of National Insurance contributions. If you have between 10 and 35 qualifying years, you receive a proportionally reduced amount.

The state pension increases each year by the “triple lock” — the highest of 2.5%, CPI inflation, or average earnings growth. This has made the state pension increasingly generous in recent years.

Building Your Record

You build qualifying years by paying National Insurance, receiving NI credits (for example, while claiming Child Benefit for a child under 12), or making voluntary Class 3 contributions. You can check your record and get a state pension forecast through your personal tax account on the HMRC website.

Accessing Your Pension

From age 57 (rising from 55 in April 2028), you can access your defined contribution pension. There are several options:

• Tax-free lump sum: Take up to 25% of your pension as a tax-free cash sum (capped at £268,275 for most people).
• Drawdown: Keep your pension invested and withdraw income as you need it. Withdrawals above the tax-free portion are taxed as income.
• Annuity: Buy a guaranteed income for life from an insurance company. The income is fixed and depends on interest rates and your age at purchase.
• Cash out entirely: Withdraw the whole pot. 25% is tax-free and the rest is taxed as income. Be careful — a large withdrawal in one year can push you into a higher tax band.

There is no requirement to access your pension at any specific age. You can leave it invested for as long as you like, and unused pension pots can be passed on to beneficiaries free of inheritance tax if you die before 75.

How Much Should You Be Saving?

A commonly cited rule of thumb is to halve your age when you start saving and contribute that percentage of your salary for the rest of your working life. If you start at 30, that means 15%. If you start at 20, it is 10%. This includes your employer’s contribution.

The auto-enrolment minimum of 8% is a starting point, not a target. For most people, it will not be enough to maintain their current standard of living in retirement. If you can afford to contribute more, especially early in your career when compound growth has the longest to work, it makes a significant difference.

To model the impact of different contribution rates and see the tax relief you receive, try our pension calculator.

Key Points to Remember

• Auto-enrolment means most employees are in a workplace pension with a minimum 8% contribution (5% employee, 3% employer).
• Tax relief makes pensions significantly cheaper than other forms of saving — a £100 contribution costs a basic-rate taxpayer £80.
• Salary sacrifice saves NI as well as income tax, making it the most efficient way to contribute if your employer offers it.
• The annual allowance for 2025/26 is £60,000 (tapers for high earners).
• The lifetime allowance has been abolished, but the tax-free lump sum is capped at £268,275.
• The full state pension is £230.25 per week and requires 35 qualifying years of NI.
• You can normally access your pension from age 57 (from April 2028).
• Starting early and contributing consistently is far more important than trying to time investment markets.