Managing Sequencing Risk in Pension Drawdown: Practical Strategies

The greatest financial risk in pension drawdown is not that markets deliver low average returns over 25 years — it is that markets deliver poor returns in the first few years of drawdown, when the fund is large and withdrawals are being made. This is sequencing risk, and it is the principal threat to a sustainable retirement income.

Understanding sequencing risk — and the strategies available to manage it — is essential for anyone planning to use drawdown as their primary source of retirement income.

Why the Sequence of Returns Matters

Two retirees both start with a £500,000 drawdown pension on the same date. Both withdraw £20,000 per year (indexed to inflation). Both achieve an average annual investment return of 5% over 25 years. But one has the good luck to experience strong early returns and poor later returns; the other experiences the reverse.

After 25 years, the outcomes are dramatically different. The retiree whose strong returns came early ends up with a much larger remaining fund — or at least runs out of money much later — than the one who experienced poor early returns. The arithmetic works against the unfortunate retiree because they were forced to sell more units at low prices to fund withdrawals, leaving fewer units to benefit from the eventual recovery.

This is sequencing risk. It means that two retirees with identical portfolios, identical withdrawal rates, and identical average returns can have very different outcomes solely because of the order in which those returns arrived.

The Mathematics of Forced Selling

The reason sequencing risk is so damaging lies in the asymmetry of drawdown. When you are not withdrawing (in accumulation), a fall in markets is an opportunity — you continue buying units at lower prices, and a subsequent recovery benefits you. When you are withdrawing (in drawdown), a fall in markets is a problem — you must sell units at depressed prices to fund withdrawals, and you have fewer units left to benefit from the recovery.

Example: A retiree withdraws £20,000 per year from a £500,000 portfolio.

Year 1: Markets fall 30%. Portfolio value: £350,000 – £20,000 withdrawal = £330,000. Year 2: Markets rise 10%. Portfolio value: £363,000 – £20,000 = £343,000.

Now reverse the sequence: Year 1: Markets rise 10%. Portfolio value: £550,000 – £20,000 = £530,000. Year 2: Markets fall 30%. Portfolio value: £371,000 – £20,000 = £351,000.

After two years with identical returns in different orders, the sequence that started badly (down 30%) produces a fund of £343,000; the sequence that started well (up 10%) produces £351,000. A small difference after two years — but the effect compounds over decades.

Research by pension academics suggests that the first decade of drawdown is the critical period. Poor returns in years 1–10 can be permanently damaging even if markets recover strongly thereafter.

Strategy 1: The Cash Buffer

The simplest protection against sequencing risk is maintaining a cash reserve equivalent to 1–2 years of planned withdrawals outside of the invested portfolio. During a market downturn, you draw from the cash buffer rather than selling equities at depressed prices. When markets recover, you refill the buffer by selling some equity or bond holdings.

Advantages: Simple to understand and implement; requires no complex portfolio structure; provides psychological reassurance.

Limitations: Cash earns low returns and is eroded by inflation over time; maintaining too large a cash buffer permanently drags on portfolio performance; requires discipline to refill the buffer after markets recover.

Strategy 2: The Bucket Approach

The bucket strategy is an extension of the cash buffer concept. It divides the drawdown portfolio into three compartments with different risk levels and time horizons:

Bucket 1 — Short-term (0–3 years): Cash, money market funds, short-term gilts. Provides 1–3 years of living expenses without any exposure to equity market risk. This is the "spending bucket."

Bucket 2 — Medium-term (3–10 years): Investment-grade bonds, diversified income funds, infrastructure, property REITs. Provides both income and moderate capital protection. This bucket is the "bridge" — it refills Bucket 1 and provides a buffer for the equity portfolio.

Bucket 3 — Long-term (10+ years): Global equities, growth assets. This is the engine of long-term real (after-inflation) return. It is not accessed during market downturns — it is given time to recover.

The refilling rule: When Bucket 1 is depleted, refill it from Bucket 2. When Bucket 2 falls below target, refill it from Bucket 3 during a period of market strength. Never refill from Bucket 3 during a market downturn.

Advantages: Provides a clear mental model for managing the portfolio through market cycles; reduces the emotional pressure to sell equities in downturns; aligns time horizon to risk level.

Limitations: The bucket boundaries are notional — in practice, all the assets are in one SIPP or pension account; rebalancing rules can become complex; the returns in Bucket 1 and 2 may be very low in some interest rate environments.

Strategy 3: Natural Yield

The natural yield approach generates income from the portfolio's dividends, interest, and other distributions — without selling any underlying assets. The withdrawal is funded entirely by income produced naturally by the portfolio, rather than by "eating into" the capital.

How it works: Construct the drawdown portfolio to produce approximately 3–4% per year in natural income — through dividend-paying equities, bonds, property funds, and infrastructure. Draw only this natural income as pension withdrawals. The capital base is not eroded, so sequencing risk — which arises from forced capital sales — is greatly reduced.

Advantages: Elegant simplicity; the portfolio provides a self-sustaining income regardless of capital values; avoids the psychological pressure of selling assets in downturns.

Limitations: Natural yield of 3–4% requires a specific portfolio construction that may not suit all risk profiles; dividend cuts (common in market downturns) can reduce income unexpectedly; the inflation-adjusted purchasing power of a fixed yield may decline over time.

Strategy 4: Flexible Withdrawal Rates

A sustainable withdrawal rate is not a fixed pound amount — it is a percentage of the portfolio's current value. Adjusting withdrawals downward when the portfolio falls, and upward when it recovers, is one of the most effective sequencing risk mitigants.

The Guyton-Klinger rules: A framework for flexible withdrawals that adjusts the annual withdrawal based on portfolio performance:

• If the portfolio has fallen more than 10% from its starting value, reduce withdrawals by 10%
• If the portfolio has risen significantly, allow a modest increase in withdrawals
• Set a "floor" withdrawal below which reductions do not apply (to protect essential spending)

This requires flexibility in lifestyle spending — something not all retirees can achieve — but even modest flexibility in discretionary spending dramatically reduces the probability of portfolio depletion.

Strategy 5: Guaranteed Income Flooring

The most complete solution to sequencing risk is to ensure that essential living costs are met by guaranteed income — income that does not depend on market performance:

• State pension: A guaranteed, inflation-protected income from State Pension age (currently 66, rising to 67 between April 2026 and March 2028) — up to approximately £12,547 per year in 2026/27 for the full new state pension. The single most effective guaranteed income floor available.
• Annuity: Purchasing an annuity (or partial annuity) with a portion of the drawdown fund converts some of the portfolio from variable to guaranteed. Following the rise in gilt yields since 2022, annuity rates have improved substantially from the lows of the previous decade — making this a more attractive option than it was for much of the 2010s, for those who can tolerate giving up flexibility.
• Defined benefit pension: If you have a DB pension from a former employer, this provides a guaranteed income floor that allows the drawdown portfolio to take more risk (because essential needs are already met).

Once essential costs are covered by guaranteed income, the drawdown portfolio covers only discretionary spending — and a market downturn that forces a reduction in discretionary spending is tolerable in a way that a reduction in essential spending would not be.

The Withdrawal Rate Question in 2026

The "4% rule" — which suggests a 4% initial withdrawal rate, adjusted annually for inflation, has a very high probability of lasting 30 years — was developed by William Bengen using US historical data from the 1920s. In the UK context, and given current market conditions, the rule has been widely questioned:

• Lower expected equity returns going forward may suggest a lower sustainable rate
• Longer life expectancies mean portfolios may need to last 35–40 years
• High initial valuations in global equity markets may suppress future returns
• Rising annuity rates (due to higher gilt yields) make annuities more competitive with drawdown as an income source

Many UK financial planners now model withdrawal rates of 3–3.5% as a baseline for long-term planning, with 4% used only where significant guaranteed income (state pension, DB pension) is already in place. At 3% from a £500,000 portfolio, annual withdrawals are £15,000. At 4%, they are £20,000.

The appropriate withdrawal rate is not a universal number — it depends on the investment portfolio, the client's flexibility to vary spending, the presence of guaranteed income, and the client's life expectancy and health.

The International Dimension

For UK expats drawing pension income from abroad, sequencing risk has an additional layer: currency risk. A drawdown fund denominated in GBP, where income is spent in euros, dirhams, or baht, means that exchange rate movements add volatility to the real spending power of withdrawals. A falling GBP amplifies the effective withdrawal rate in foreign currency terms.

Managing this requires either:

• Holding some assets in the local currency within the drawdown portfolio
• Maintaining a foreign currency cash buffer for near-term spending
• Considering a QROPS in the local currency (which removes GBP-denominated assets but introduces other considerations)

How Global Investments Can Help

Sequencing risk management is at the heart of our drawdown planning service. Our advisers help clients:

• Design drawdown portfolios appropriate to their income needs, risk tolerance, and time horizon
• Structure bucket approaches and withdrawal policies for phased retirement
• Model sustainable withdrawal rates given clients' specific income profile (state pension, DB pension, annuity, drawdown)
• Assess the case for partial annuitisation to create an income floor that reduces reliance on equity markets for essential spending
• Manage the currency dimension for expats drawing pension income across different currencies

The guidance in this article is general in nature. Investment returns are uncertain and past performance is not a guide to future returns. This article does not constitute regulated financial advice or investment advice. We recommend taking professional, regulated advice before making any drawdown investment strategy decisions.