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Investing in retirement: rules, asset allocation and making your money last

Investing in retirement often requires a different approach than when you were earning, especially as you focus more on wealth preservation and on ensuring your assets generate enough income for you to enjoy life after work. 

We look at how to balance risks with your retirement goals, and where to get help building and maintaining your investment portfolio.

Updated: 03.08.26

By Nicholas Powell

This content was factually correct when written but may not reflect current developments or information.

Investing in retirement

How does investing change after you retire?

Investing before retirement gives you more time to generate returns. It may be appropriate to invest in higher-risk assets such as stocks and shares, because you usually have time to wait for markets to recover if there is a downturn.

Reaching retirement fundamentally means shifting from saving and accumulating wealth to converting those assets into income (decumulation) to fund your retirement. With that in mind, investing typically focuses on maintaining the wealth you’ve built so that you can live the retirement lifestyle you want.

That said, your investment decisions will also need to take into account:

  • Whether you want to help support children or grandchildren, or pass on your wealth to them.

  • Whether you need to save for healthcare (for example, if you want in-home support or move into a care home).

  • Any debts you need to pay off, such as a mortgage, car loan, or credit cards.

What should a retirement portfolio look like?

There are numerous different types of investment, and there’s no strict rule about what your portfolio should look like during retirement compared to when you’re working. The right combination of assets (asset allocation) depends on your retirement goals. However, for many people nearing or at retirement age, risk tolerance declines.

Reduced risk tolerance often means moving away from a split of 70% of your funds invested in stocks and 30% in fixed interest investments like bonds. Switching to a 60/40 split is often preferred.

Fundamentally, the right mix depends on your risk tolerance, your age at retirement, and how long you need your pension to last.

Bear in mind that holding all your wealth in cash is generally not recommended as inflation erodes the value of savings over time.

It is also important to distinguish between cash held as a long-term investment and cash held as a practical reserve. While too much cash can reduce long-term growth potential, having accessible cash available can help meet planned withdrawals, unexpected costs and short-term income needs without forcing you to sell investments at an unfavourable time.

Why an emergency fund matters in retirement

A suitable emergency fund is essential throughout retirement. Once you start drawing income from pensions and investments, market downturns can be more damaging because you may need to sell assets while values are temporarily depressed. This is sometimes known as sequencing risk: poor returns in the early years of retirement, combined with withdrawals, can have a long-term impact on how long your money lasts.

Holding an appropriate cash reserve can give you breathing space during periods of volatility. For example, keeping enough accessible cash to cover several months of essential expenditure, and in some cases one to two years of planned withdrawals, may allow you to reduce or pause withdrawals from invested assets while markets recover. The right amount will depend on your income needs, guaranteed income, expenditure, health, dependants and wider assets.

The aim is not to hold excessive cash indefinitely, as inflation can erode its value, but to maintain a sensible buffer as part of a wider retirement income plan. This reserve should be reviewed regularly and replenished when markets are more favourable or when income needs change.

How much can you safely withdraw?

How much you can ‘safely’ withdraw ultimately depends on how much you have to start with. When it comes to being cautious, the 4% rule is often described as the safest withdrawal strategy.

What is the 4% pension rule?

The 4% pension rule is often used as a broad guide to sustainable withdrawals from a pension fund. In simple terms, withdrawing around 4% of your fund in the first year of retirement, then adjusting that amount for inflation each year, is intended to help investments last for around 30 years.

The model assumes that your investments are spread evenly between stocks and bonds (50/50) and that you don’t change how much you withdraw or how you allocate your investments. It does allow for roughly 2% inflation each year to meet any rising living costs.

Here’s how the model works:

  • You have £500,000 in pension funds.

  • In your first year of retirement, you withdraw 4%: £20,000

  • In your second year, you withdraw 4% again: £20,000

  • You also need to take out the cash equivalent of 2% for inflation: £400 (2% of £20,000)

  • Your total withdrawal in year two of retirement is: £20,400

The main drawback of the 4% rule is that it’s a broad model that doesn’t consider individual lifestyles, age at retirement, or any other income you may have.

It also assumes that inflation stays relatively stable and that investment returns are strong enough to support ongoing withdrawals. In reality, markets can fall sharply, particularly in the early years of retirement, and selling investments during a downturn can lock in losses. This is why withdrawal levels, cash reserves and asset allocation should be reviewed together, rather than considered in isolation.

The rule also doesn’t consider any lifestyle changes or adapt to changing needs. For example, you might need to support family members or cover unforeseen healthcare costs.

What is the 30:30:30:10 rule?

The 30:30:30:10 rule is another pension investment model using a specific asset allocation framework:

  • 30% on stocks and shares (for growth)

  • 30% on bonds (for fixed income returns)

  • 30% on property (to counter inflation)

  • 10% in cash (for immediate access)

As with the 4% rule, this model has the same drawbacks, and whether it’s suitable for you will depend on your risk tolerance, age, and personal and financial circumstances.

The risks of investing in retirement

All investments come with risk, no matter how old you are or when you start. Challenges to consider include:

  • Inflation – investing cash in savings accounts tends not to keep up with inflation.

  • Longevity – the longer you live, the more income you need.

  • Illiquid assets – some investments can’t be converted into cash quickly and, depending on when you sell, may experience a loss of value (such as property). To combat this, you can keep part of your portfolio in liquid assets.

  • Tax – it’s crucial to be aware of the implications of your investments and lump-sum withdrawals, so always get advice from an independent financial adviser (IFA) before making any decisions.

  • Market challenges – some investments are highly sensitive to market conditions, but a diversified portfolio is often less impacted by a market downturn.

  • Sequencing risk – if markets fall early in retirement while you are drawing income, your portfolio may have less opportunity to recover. A cash reserve, flexible withdrawals, and regular reviews can help reduce this risk.

To manage these risks, it is important to regularly review your portfolio, keep a suitable emergency fund, and adjust withdrawals where necessary. Financial planning and cashflow modelling can help you stress-test different scenarios, including market downturns, inflation, care costs, and changes in spending.

FAQs

Financial advice for the retirement you want

There’s no right or wrong way to invest, but your investments should meet your needs and priorities. While there’s nothing to stop you from investing on your own, building a successful portfolio takes time, skill, and experience.

For tailored advice specific to your retirement goals and circumstances, an independent financial adviser can help you with your retirement planning. An IFA can use cashflow modelling to test different scenarios, such as higher inflation, lower investment returns, unexpected care costs, changes in spending, or a market downturn early in retirement. This can help you understand how much income may be sustainable, how much cash reserve is appropriate, and when your plan may need to be adjusted.

For tailored advice specific to your retirement goals and circumstances, an independent financial adviser can help you with your retirement planning. An IFA will be able to model different scenarios, including using cashflow modelling, so you can visualise how far your money will go based on your own personal circumstances and goals.

To find out how we can help find a pension solution that suits you, take a look at our wealth management adviser service or call us on 01603 967967.

The value of investments and any income from them can go down as well as up and you might not get back the original amount invested. The past is not a guide to the future. The value of tax benefits depends on your individual circumstances. Tax laws can change.

Seeking financial advice

If you’d like more advice on investing during retirement, Alan Boswell Group can help you. Our independent financial advisers can help you create and manage a portfolio with the level of risk you’re comfortable with, which is designed to help you meet your retirement goals. We can also help with retirement planning and cashflow modelling to help you to live the retirement lifestyle you envision.

To learn more, call a member of our team today.

Speak to us:  01603 967967

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