Pensions · March 2026 · 13 min read

Defined Benefit Pensions Explained

If you have a Defined Benefit pension, you’re holding one of the most valuable financial assets available in the UK. Here’s how they work, what the jargon means, and what you need to know before making any decisions.

What is a Defined Benefit pension?

A Defined Benefit (DB) pension — sometimes called a “final salary” or “career average” pension — promises you a specific annual income in retirement, based on your salary and years of service. Unlike a Defined Contribution (DC) pension, where your income depends on how your investments perform, a DB pension gives you a guaranteed amount for life.

The employer (and the scheme’s investment fund) bear the investment risk. If markets fall, the employer must make up the shortfall. This is why DB pensions have become increasingly rare in the private sector — they’re expensive to provide. Most private sector DB schemes are now closed to new members, and many are closed to future accrual (meaning existing members can no longer build up new benefits).

DB pensions remain common in the public sector. The NHS Pension Scheme, the Teachers’ Pension Scheme, the Civil Service pension, the Local Government Pension Scheme (LGPS), and the Armed Forces pension are all DB schemes.

Final salary vs career average (CARE)

There are two main types of DB pension, and the difference matters significantly:

Final salary

Your pension is calculated based on your salary at (or near) the point you leave the scheme or retire. The formula is:

Annual pension = (Years of service) × (Accrual rate) × (Final salary)

For example, with a 1/60th accrual rate and 30 years of service on a final salary of £60,000:

30 × (1/60) × £60,000 = £30,000 per year

Final salary schemes are the most generous type of DB pension, particularly for people whose salary increases substantially during their career. Most private sector final salary schemes closed to new members in the 2000s.

Career Average Revalued Earnings (CARE)

Instead of using your final salary, a CARE scheme calculates your pension based on your average salary across your entire membership. Each year, a slice of pension is earned based on that year’s salary and the accrual rate. These slices are then revalued (increased) each year to account for inflation or salary growth.

For example, in a CARE scheme with a 1/57th accrual rate (like the NHS 2015 scheme), earning £45,000 in a given year earns you:

£45,000 × (1/57) = £789.47 of annual pension for that year, revalued each year by CPI + 1.5%.

Most public sector schemes reformed in 2015 moved from final salary to CARE.

Accrual rates: how fast your pension builds

The accrual rate determines how much pension you earn for each year of service. Common accrual rates include:

Accrual ratePension per year of service (£60,000 salary)Common in
1/80th£750Older public sector schemes, some private sector
1/60th£1,000Many private sector final salary schemes
1/57th£1,053NHS 2015 scheme
1/49th£1,224LGPS

A higher accrual rate means your pension builds faster. The LGPS at 1/49th is one of the most generous currently available. Schemes with a 1/80th accrual rate often also provide a separate tax-free lump sum (typically 3/80ths of final salary per year of service), which partly compensates for the lower accrual.

Revaluation: protecting your pension from inflation

If you leave a DB scheme before retirement (a “deferred member”), your accrued pension needs to keep pace with inflation. This is done through revaluation — annual increases applied to your deferred pension.

Statutory minimum revaluation for deferred pensions is CPI capped at 5% for benefits accrued between April 2009 and April 2030, and CPI capped at 2.5% for benefits accrued after April 2030 (for schemes that use statutory revaluation). Some schemes offer more generous terms.

In payment, DB pensions typically increase annually. Public sector schemes generally increase pensions in line with CPI. Private sector schemes vary — some increase by CPI (capped at various levels), some by a fixed percentage (e.g., 3% or 5%), and some provide no increases at all for benefits earned after a certain date.

Why revaluation matters

A pension of £20,000 today will buy significantly less in 20 years. At 2.5% annual inflation, it would have the purchasing power of roughly £12,200. A DB pension with full CPI increases maintains its real value; one with no increases loses purchasing power every year. When valuing a DB pension, always check what increases apply.

Commutation: taking a tax-free lump sum

Most DB schemes allow you to commute part of your annual pension for a tax-free lump sum when you retire. This means giving up some annual income in exchange for a one-off cash payment.

The exchange rate is called the commutation factor. A typical factor might be between 12:1 and 20:1, meaning for every £1 of annual pension you give up, you receive between £12 and £20 as a lump sum.

Example

James has a DB pension of £25,000 per year with a commutation factor of 15:1. He decides to take the maximum tax-free cash:

Whether commutation is worthwhile depends on the commutation factor, your tax position, your health, and what you plan to do with the lump sum. A factor above 20:1 is generally considered good value; below 12:1 is typically poor value.

Some older schemes (particularly those with 1/80th accrual) automatically provide a tax-free lump sum in addition to the pension, without requiring commutation. Check your scheme rules.

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Transfer values (CETV): should you transfer out?

A Cash Equivalent Transfer Value (CETV) is the lump sum a DB scheme would pay if you chose to transfer your benefits to a DC pension. It represents the scheme’s estimate of the cost of providing your promised benefits.

How CETVs are calculated

The CETV is based on the present value of your future pension payments, discounted using assumptions about investment returns, inflation, and life expectancy. When interest rates are low, CETVs tend to be higher (because it costs more to fund the same income). When rates rise, CETVs fall.

CETVs fell significantly in 2022-2023 when interest rates rose sharply, and have stabilised since. A CETV is typically expressed as a multiple of the annual pension. For example, a £20,000/year pension with a CETV of £400,000 represents a 20x multiple.

When transferring might make sense

When transferring usually doesn’t make sense

Legal requirement

If your DB pension benefits are worth more than £30,000, you are legally required to take advice from an FCA-regulated financial adviser before transferring. This is to protect you from making an irreversible decision that could leave you worse off. The vast majority of transfers are not in the member’s best interest.

Pension sharing on divorce

DB pensions are often the second-largest matrimonial asset after the family home. On divorce, there are three main ways to deal with a DB pension:

1. Pension sharing order

The court orders a percentage of the pension to be transferred to the ex-spouse. The ex-spouse receives a pension credit — either within the same scheme (an “internal transfer”) or transferred to their own pension arrangement. This provides a clean break.

2. Pension offsetting

The pension stays intact, and other assets (often the family home) are redistributed to compensate. For example, one party keeps the £500,000 pension; the other gets additional equity in the house. The risk here is that pensions and property don’t always have equivalent value.

3. Pension attachment order

The scheme is directed to pay a portion of the pension income to the ex-spouse when the member retires. This doesn’t provide a clean break — payments stop if the member dies, and the ex-spouse cannot control when payments start.

Pension sharing orders are the most common approach and are generally considered the fairest. Valuing a DB pension for divorce purposes is complex and usually requires an actuary.

GMP equalisation

Between 1978 and 1997, many employees were “contracted out” of the State Earnings-Related Pension Scheme (SERPS) through their employer’s DB scheme. In return, the DB scheme had to provide a Guaranteed Minimum Pension (GMP) — a minimum level of pension benefits.

However, the GMP rules were different for men and women (different State Pension ages, different accrual rates). A landmark 2018 court case (Lloyds Banking Group) ruled that schemes must equalise benefits so that men and women receive the same overall pension for the same service.

GMP equalisation is an enormously complex administrative exercise. Many schemes are still working through it. If you were a member of a contracted-out scheme between 1978 and 1997, you may receive a small uplift to your pension as a result of equalisation. Your scheme should write to you if this affects you.

DB pensions and the State Pension

If you were contracted out of the additional State Pension (SERPS or S2P) through your DB scheme, your State Pension may be lower than the full amount. You’ll see a “Contracted Out Pension Equivalent” (COPE) amount on your State Pension statement. This isn’t additional money — it’s the amount your DB scheme was expected to provide instead of the additional State Pension.

The full new State Pension is £230.25 per week (£11,973/year) in 2025/26, rising to £241.30 per week (£12,548/year) in 2026/27. If you were contracted out, your starting amount may be less than this — but your DB pension should more than compensate.

Normal retirement age and early/late retirement

Every DB scheme has a Normal Retirement Age (NRA) — the age at which you can take your full pension without any reduction. Common NRAs are 60, 65, or State Pension age.

If you retire before your NRA, your pension is usually reduced to reflect the longer period it will be paid. A typical early retirement reduction is 3-6% per year before NRA. So retiring 5 years early at a 5% per year reduction would reduce your pension by 25%.

If you retire after your NRA, your pension may be increased (a “late retirement factor”) to reflect the shorter payment period. Not all schemes offer late retirement increases.

DB pension death benefits

DB pensions typically provide:

From April 2027, DB pensions may be included in your estate for Inheritance Tax purposes, alongside DC pensions. The exact treatment of DB death benefits under the new rules is still being clarified.

Practical tips for DB pension holders

Key takeaways

To see how your DB pension fits alongside your other income sources, model it in the context of a full retirement plan. Our guide on how much you need to retire can help you understand what your total income needs to be.

Not financial advice

This article is for general information only and does not constitute financial, investment, tax, or legal advice. Isaac is not authorised or regulated by the Financial Conduct Authority. Projections and figures are illustrative and not guaranteed. Pensions and investments can go down as well as up. For decisions about your specific circumstances, please consult a qualified, FCA-regulated financial adviser.

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