How much retirement income can a £400,000 pension pot generate?

A £400,000 pension pot can generate meaningful retirement income, but how much depends on your drawdown rate, investment returns, and how long you need it to last.
Using a 4% drawdown rate, a £400,000 pot produces around £16,000 per year. Add the full new state pension of £12,548 per year (2026/27) and a single retiree reaches approximately £28,548. Pension calculators ask you to input your pot value, contributions, and target lifestyle to estimate this.

Key takeaways

• A £400,000 pension pot at 4% draw down generates around £16,000 per year in retirement income.
  
  
• The PLSA comfortable retirement standard is £45,400 for a single person and £62,700 for a couple.
  
  
• Investment charges can reduce a £400,000 pot by hundreds of thousands over 25 years.
  
  
• Sequence of returns, inflation, and care costs are the three risks most retirement plans underestimate.

Getting the most from a pot this size depends on more than the number itself. The difference between an efficient and an inefficient withdrawal strategy, accounting for tax, timing, and the right income mix, can run to tens of thousands of pounds over a retirement.

Minimising the tax on what you draw is a genuinely consequential decision, and it's the area where Netwealth's financial planners spend the most time with clients.

What retirement income can I expect from a £400,000 pension pot?

The 4% rule is the most widely used framework for estimating sustainable drawdown. It suggests withdrawing 4% of your pot annually, a rate that has historically sustained a portfolio for around 30 years across most market conditions.

At 4%, a £400,000 pot produces £16,000 per year. That sits above the PLSA minimum standard of £13,900 for a single person but well below the moderate standard of £32,700 and the comfortable standard of £45,400.

State pension entitlement depends on your National Insurance record, and the figures below are illustrative. The table shows how combined income changes across different pot sizes.

In our experience, clients in this pot range often underestimate the impact of state pension timing on their tax position in the first years of drawdown.

How much do I need in my pension to retire comfortably? Retirement lifestyle standards explained

The Pensions and Lifetime Savings Association publishes annual benchmarks based on research by Loughborough University. The figures represent estimated annual expenditure, not income after tax, and assume outright homeownership with no mortgage.

• Minimum: £13,900, covers basic needs with a little left over for leisure
  
  
• Moderate: £32,700, more financial security, including an annual overseas holiday
  
  
• Comfortable (single): £45,400, greater financial freedom, multiple breaks, higher leisure spending
  
  
• Comfortable (couple): £62,700, with both partners receiving the full state pension, needs a combined pot of roughly £940,000
  
  
• With the state pension included, a single person needs around £821,000 to reach the comfortable standard of £45,400. Reaching that from drawdown alone, with no state pension, requires approximately £1.1 million.

How long will a £400,000 pension pot last? Retirement savings, pension calculators, and longevity

At 4% drawdown with no investment growth, a £400,000 pot lasts exactly 25 years. Investment returns can extend that; poor returns or higher withdrawals shorten it. In practice, the clients we work with are often more concerned about running out of money in their 80s than about maximising income in their 60s.

Someone retiring at 60 needs their savings to last up to 35 years. To build a £400,000 pot by age 65 starting at age 45, you'd need to save approximately £1,000 per month assuming 5% annual growth.

If you plan to retire at 55, a withdrawal rate of 3% to 4% per year helps preserve longevity. Planning for the longer end of that range, even if it feels conservative, tends to give people more confidence in what they're spending today.

With a defined contribution pension or SIPP, you can take up to 25% as a tax-free lump sum under the lump sum allowance (LSA), capped at £268,275. For a £400,000 pot, that's £100,000 tax-free. Taking it in stages keeps the rest invested in flexi-access drawdown.

How to model retirement income and retirement planning from £400,000 to £750,000

Modelling retirement income isn't simply a case of dividing your pot by the years you expect to live. The key variables are drawdown rate, investment return, inflation, and charges, alongside every income source you have, including the state pension, ISA savings, and any defined benefit pension.

The 4% rule draws on US historical data and doesn't account for UK tax or individual longevity. Morningstar's UK-specific research puts a more sustainable starting point at 3% to 3.5%, lower than the US-derived 4% rule, largely because UK equity returns have historically lagged the US and UK charges add extra drag. At 3.5%, a £400,000 pot generates £14,000 per year; at 3%, it generates £12,000.

Charges have an outsized impact over long retirement periods. On a £400,000 pot at 5% annual return over 25 years, the difference between 0.75% and 1.75% in total annual charges produces approximately £1,132,000 versus £890,000, a gap of around £242,000 from charges alone.

Netwealth's retirement planning tools let you model your own pot across different drawdown rates, charge levels, and time horizons. The table below illustrates how this plays out across a range of starting pot sizes.

In our experience, looking at these variables one at a time can give a misleading picture of where you actually stand. Netwealth brings them together so you can see how your income holds up across different scenarios.

How employer contributions and tax relief boost your pension savings

Pension tax relief and employer contributions boost pension savings well beyond what you actually put in. Basic rate taxpayers get 20% relief automatically, so an £800 contribution becomes £1,000 in the pot. Higher rate taxpayers can claim an additional 20% through self-assessment.

The annual allowance is £60,000 (or 100% of earnings if lower), and you can carry unused allowance forward up to three years. Always contribute enough to secure the full employer match.

Once you start drawing taxable pension income, the money purchase annual allowance (MPAA) limits further contributions to £10,000 per tax year.

The state pension, ISAs, and managing tax in retirement

The state pension is guaranteed, inflation-linked via the triple lock, and arrives regardless of investment performance. State pension age is currently 66, with a phased rise to 67 through 2026 to 2028. Check your state pension forecast on GOV.UK.

Pension income is taxable. The state pension of £12,548 uses most of the personal allowance of £12,570 (2026/27), so additional pension withdrawals above that threshold attract 20% income tax. Basic rate tax applies up to £50,270; higher rate tax of 40% applies above that.

ISA withdrawals are entirely tax-free. View our ISA page and note you can contribute up to £20,000 per tax year. The personal savings allowance lets basic rate taxpayers earn up to £1,000 in savings interest tax-free each year, and higher rate taxpayers up to £500.

What does a comfortable retirement income look like for a couple with £750,000 in assets?

A couple both receiving the full state pension has a combined income of approximately £25,096 per year. The PLSA comfortable standard for a two-person household is £62,700, leaving a gap of around £37,604 to fund from pension savings and other sources.

At 4% drawdown, bridging that gap requires a combined pot of approximately £940,000. Pension drawdown combined with ISA savings, defined benefit income, and tax-free cash gives couples a wide range of income options to close or exceed that gap.

In our experience, couples often plan as a single unit rather than two separate tax positions, which leaves money on the table. Treating each partner's allowances individually is a simple way to improve a retirement income plan.

How do I work out what income I will need in retirement? Income options and planning

Start with your current essential spending and estimate how it changes at different retirement lifestyle stages. Mortgage payments may end and commuting costs fall, but leisure spending often rises before declining later.

Map your expected state pension, pension pots, and ISA savings against your income requirements in today's terms, using the PLSA benchmarks as a guide. Care costs tend to rise significantly from the mid-70s onwards, so factor in a buffer.

A financial planner can model multiple scenarios across different drawdown rates and income sources. The conversations we find most useful start not with a pot size but with a spending number: what does a good retirement actually cost you, in your life, and how does that change across different stages?

Read our retirement planning guide for more on structuring income in retirement.

What are the inheritance tax implications of a large pension pot?

Until now, most defined contribution pension pots have sat outside a person's estate for IHT purposes. Under Finance Act 2026, from 6 April 2027, most unused defined contribution pension funds will be brought into the estate for IHT purposes.

The IHT nil rate band is £325,000 per person, with a residence nil rate band of up to £175,000 where a property passes to direct descendants. For a couple, combined allowances can reach £1 million, and from 2027 a large pension pot could trigger a 40% IHT charge on the excess.

If the holder dies before age 75, beneficiaries draw the inherited pension free of income tax. At 75 or older, withdrawals attract tax at their marginal rate. This income tax rule remains in place after April 2027, alongside the new IHT exposure.

Read our guide on whether to draw your pension or your ISA first under the 2027 rules.

How to stress-test your retirement income against the unexpected

Retirement income plans that rely on a single set of assumptions are fragile, and most plans underestimate the same three risks: sequence of returns, inflation erosion, and the rising cost of care in later life.

Sequence of returns risk

A significant market fall early in retirement can permanently reduce your total income capacity. A 30% drop in year one leaves you drawing from a smaller pot that may take years to recover. Holding two to three years of living expenses in cash lets you avoid selling investments at a loss during market stress.

Inflation erosion

At 3% annual inflation, the purchasing power of a fixed £28,000 income halves in approximately 24 years. A £400,000 pot generating £16,000 today produces the equivalent of around £8,000 in real terms by around 2050 without any inflation adjustment.

Care costs

Residential care costs around £949 a week on average, around £49,300 a year, according to Age UK, though it varies considerably by care type, location, and whether costs are privately or council funded. A few years of that can take a serious bite out of a £400,000 pot.

An annuity for a portion of essential income guarantees core expenses regardless of markets, giving a valuable layer of financial security alongside a drawdown strategy.

At Netwealth, stress-testing against all three of these risks is built into every retirement plan, not just sequence of returns.

How do I know if my pension is invested in the right thing for my age?

The risk profile of your pension investments should evolve as you approach and enter retirement. The wrong strategy at the wrong time can materially reduce the income your pot generates.

Here are three common mismatches to check:

1. Too cautious

A pension heavily weighted towards bonds and cash when you're 15 or more years from retirement may significantly underperform a more equity-focused portfolio. Equity markets have historically delivered higher long-term returns and the time horizon to absorb volatility is still sufficient.

2. Too aggressive

If you're within five years of retirement and heavily invested in equities, you face a sequence of returns risk. A gradual de-risking over five to ten years before retirement, shifting towards a diversified mix of equities, bonds, and cash, is standard financial planning practice.

3. Default fund not reviewed

Many pension savers stay in their provider's default fund throughout their career without reviewing its suitability.

Default funds vary significantly in investment approach, charges, and performance, and the decisions being made on savers' behalf inside those funds matter more than most people realise.

Reviewing your fund's risk level, asset allocation, and cost structure is a high-value step, and one most people never take.

Plan your retirement income with Netwealth

Retirement income planning at this pot size involves more moving parts than most people expect. Charges, tax, sequencing, and longevity all interact in ways that are hard to model on a spreadsheet. Our digital planning tools give you a clear picture of where you stand, and our financial planners are on hand to help you act on it.

Start building your plan and secure your financial future.

Please note: the value of your investments can go down as well as up. Netwealth offers advice restricted to our services and doesn't provide independent advice across the market. This article doesn't constitute financial advice. Tax rules and thresholds are subject to change.

Frequently asked questions

How much income can I get from a £400,000 pension pot?

Using a 4% drawdown rate, a £400,000 pension pot generates approximately £16,000 per year. Add the full new state pension of £12,548 (2026/27) and a single retiree reaches around £28,548, above the PLSA minimum of £13,900 but below the moderate standard of £32,700.

Is a £400,000 pension pot enough to retire comfortably in the UK?

It depends on your retirement age, other income sources, spending needs, and how long the money must last. £400,000 gets a single person above the PLSA minimum at state pension age, though reaching the comfortable standard of £45,400 typically needs ISA savings or a larger pot.

How long will a £400,000 pension pot last in retirement?

At a 4% drawdown rate with no investment growth, a £400,000 pot lasts exactly 25 years. Investment returns can extend that; poor returns or higher drawdown shortens it. Most financial planners model retirements of 25 to 35 years, factoring in returns, charges, and inflation.

How does Netwealth help with retirement income planning?

Netwealth's financial planners model pension drawdown, state pension income, and ISA withdrawals across your full retirement plan. They also factor in the April 2027 IHT changes against your specific pot size and estate structure.

Find out more about our financial planning service.

Can Netwealth help me model retirement income across my pension pot, ISAs, and other assets?

Yes. Our financial planners model income options across defined contribution pensions, SIPPs, ISA savings, and defined benefit income, taking into account your tax position, retirement age, and income requirements. Speak to our team to build a plan for your circumstances.

Read more from Netwealth

• Who will inherit your pension?
  
  
• How to minimise tax on your pension
  
  
• Unlocking the benefits of pension consolidation
  
  
• Retirement planning: a complete guide