Investing Basics

Sequence risk: why timing matters when you start taking money out

Sequence risk can hurt retirement withdrawals when losses land early. Learn why timing matters, how cash buffers help and what UK investors should check.

By Ben Walker · June 14, 2026

Sequence risk sounds technical, but the idea is plain: bad returns early in retirement can do more damage than the same bad returns later on.

Reviewed by Sarah Okafor, Editor. June 14, 2026, 09:09 UTC.

In this article

The Short Version

Key Takeaways

Sequence risk is the danger of getting poor investment returns early while you are withdrawing money.
Early losses matter because withdrawals can lock them in before the portfolio has time to recover.
The risk is highest when someone depends on the portfolio for income and has limited flexibility.
Cash buffers, sensible spending rules and realistic asset allocation can reduce the damage.

What Sequence Risk Actually Means

Sequence risk is the risk that the order of investment returns will matter to your outcome once you start taking money out. If markets fall early, withdrawals can leave less money behind to benefit from the recovery.

That is why this is mostly a retirement-income problem, not a simple accumulation problem. When you are still adding money, weak early returns can even help because new contributions buy more units at lower prices. When you are withdrawing, the same fall can work against you.

The practical point is that average return alone is not enough. Two investors can earn the same long-term average return and still finish with very different outcomes if one of them is forced to sell assets after a bad start.

The MoneyHelper guide to retirement income choices is useful here because it explains the real-world decisions people face when they move from building wealth to drawing on it.

Why Early Losses Can Hurt More Than Later Ones

Imagine a portfolio falls in year one of retirement and you still need to take the same income from it. You are not just suffering a paper loss. You are also selling more units when prices are lower.

That leaves fewer assets in the portfolio for the rebound. Even if markets recover later, there may be less capital left to participate in that recovery.

The same fall arriving ten years later can be easier to absorb if the portfolio has already grown, withdrawals have been adjusted, or other assets are available.

This is the key reason sequence risk is about timing, not only about performance. The first years of drawdown can be especially fragile because mistakes and bad luck have less room to heal.

It also explains why a retirement plan should not be judged only by the headline return from the fund or the market. The withdrawal pattern matters just as much.

Where UK Investors Usually Meet This Risk

UK investors most often meet sequence risk when drawing from a pension, ISA portfolio or taxable investment account to fund living costs. The issue tends to matter most when portfolio withdrawals are regular and non-negotiable.

Someone bridging the gap between work and State Pension age can face it. So can an investor using dividend income plus fund sales to top up household spending. The risk is not confined to wealthy retirees. It appears whenever a portfolio becomes part of the monthly budget.

It is also more visible when cash reserves are thin. If every market wobble forces a sale, the investor has less control over timing.

The FCA investing basics guidance is useful background because it reminds readers that risk is not only about choosing assets. It is also about whether the money is needed and when it is needed.

What Can Reduce The Damage

There is no perfect defence, but several sensible habits can reduce the damage. The first is holding an appropriate cash buffer so near-term spending does not always require selling investments in a falling market.

The second is being realistic about withdrawal rates. Taking too much, too early, puts pressure on the plan even if markets behave well. Sequence risk becomes harsher when the spending target was already stretched.

The third is keeping asset allocation aligned with the job the portfolio has to do. Too much risk can make early losses severe. Too little growth can leave the portfolio unable to keep up with inflation over time. The answer is not zero risk. It is balanced risk.

This is where related Cristoniq guides on rebalancing a portfolio and diversification are helpful. They explain how structure can support better decisions when markets are uncomfortable.

A fourth defence is flexibility. If spending can be reduced for a period after a bad year, the portfolio may get more time to recover. That is not always possible, but where it is possible it matters.

A Worked Example

Imagine two retirees each start with GBP 500,000 and both aim to withdraw GBP 20,000 a year. Over the long run, both portfolios earn the same average return. On paper, the plans look identical.

But Investor A suffers a sharp market fall in the first two years of retirement. They still need the income, so assets are sold while prices are weak. Investor B gets the same bad years much later, after a decade of better returns and some portfolio growth.

Even if the long-term average return ends up matching, Investor A may finish with much less money because the early withdrawals locked in losses. Investor B had more capital in place by the time the difficult years arrived.

That is sequence risk in plain form. The order of returns changed the outcome, even though the average return did not.

This example is simplified, but it captures the core lesson. Retirement planning is not only about what return you might earn. It is about when that return arrives relative to the money you need to take out.

What This Means For You

If you are years away from needing portfolio income, sequence risk is something to understand rather than fear. It becomes more important as withdrawals move from theory to schedule.

If you are close to drawdown, ask practical questions. How much of the next one to three years of spending would need to come from investments if markets fell? How flexible is that spending? How much cash or low-volatility reserve is already available?

It is also worth checking whether the plan relies on a heroic return assumption. A drawdown strategy that only works if markets behave kindly is weaker than it looks.

The aim is not to predict crashes. The aim is to build a plan that can survive a bad start without forcing panicked decisions.

In Plain English

Sequence risk means bad timing can hurt a withdrawing investor more than the same bad returns would hurt someone who is still saving.

The danger is selling investments after early losses and leaving too little in the portfolio for the recovery.

That is why cash buffers, sensible withdrawal rates and a realistic mix of assets matter. They do not remove the risk, but they can stop one bad stretch from doing permanent damage.

The useful takeaway is simple: retirement income planning is about timing as well as return. If you may need to sell assets soon, the order of market returns matters.