Flexi-Access Drawdown Investment Strategy: A Practical Framework

Flexi-access drawdown — the ability to take variable amounts of pension income directly from an invested pension fund — transformed UK retirement planning when it was introduced by the pension freedoms legislation in 2015. For the first time, pension savers were not required to purchase an annuity with their pension fund. They could remain invested throughout retirement, taking income as and when needed, and leave the remainder to their beneficiaries on death.

The freedom is genuine, and the flexibility is valuable. But the investment challenge is significant and is often underestimated. A pension in drawdown is not an investment problem in the ordinary sense — it is an investment problem with the added complication of regular withdrawals from an invested, fluctuating pool of assets. Managing it well requires a deliberate strategy.

The Unique Challenge of Drawdown Investing

During the accumulation phase, the approach to investing is relatively straightforward: hold diversified assets weighted towards equities, accept volatility, reinvest returns, and allow time to smooth out market cycles. Market falls during accumulation are not catastrophic — ongoing contributions buy assets at lower prices.

In drawdown, this comfortable dynamic reverses. You are no longer contributing — you are withdrawing. Every pound taken from the pension is a pound that cannot benefit from any future recovery. And critically, the order in which returns arrive — not just the average level — determines how long the money lasts.

Sequence-of-Returns Risk

Consider two investors who both achieve an average annual return of 5% over 20 years of drawdown. Investor A experiences strong early returns followed by a market downturn late in retirement. Investor B experiences the downturn first, followed by strong recovery.

Investor A ends the 20-year period with substantially more money. Investor B may run out of money before the 20 years is complete, even though the average return is identical.

This is sequence-of-returns risk. It arises because selling assets to fund income during a market downturn permanently reduces the number of units held in the portfolio. When the market recovers, there are fewer units participating in the recovery. The compounding effect of this cannot be reversed.

A severe market fall in the first three years of drawdown is among the worst outcomes a drawdown investor can experience. A 30% fall early in retirement, combined with continued withdrawals, can be sufficiently damaging to render even a recovery inadequate.

The Bucket Strategy

The most widely used framework for managing sequence-of-returns risk in drawdown is the bucket strategy, which segregates pension assets by time horizon.

How the Buckets Work

Short-term bucket (0 to 3 years): This bucket holds one to three years of expected income requirements in cash, money market funds, or short-duration bonds. It is the buffer. When you need to take income, you take it from here — not by selling equities. During a market downturn, this bucket is what sustains you while you wait for equities to recover.

Medium-term bucket (3 to 7 years): This bucket holds three to seven years of income reserves in bonds, multi-asset funds, and lower-volatility income-generating assets. It provides a middle layer — more stable than equities, more growth-oriented than cash. As the short-term bucket is drawn down, the medium-term bucket is used to replenish it during or after periods of market stress.

Long-term bucket (7+ years): This bucket holds the long-duration growth assets — predominantly global equities. Its job is to grow. It should not be touched during a downturn. It is refilled only when markets are performing well and the short-term bucket needs replenishment from surplus growth.

Maintaining the Buckets

The bucket strategy requires periodic rebalancing and disciplined management. When equity markets are performing well, excess growth in the long-term bucket is used to refill the short-term bucket. When markets fall, you stop drawing from the long-term bucket and live off the short-term reserves.

The key discipline is never selling equities in a downturn to fund income. If the short-term cash buffer is maintained, this discipline is achievable without any reduction in income.

Sustainable Withdrawal Rates

A sustainable withdrawal rate is the percentage of the initial pension pot that can be withdrawn annually — increased with inflation each year — without exhausting the fund over the retirement period. The widely cited benchmark is the "4% rule", derived from US historical data in the 1990s by financial planner William Bengen.

For UK pensioners, the 4% rule needs adjustment. UK historical equity returns and bond yields differ from those in the US, and the current low-yield environment in government bonds creates additional uncertainty. UK financial planners commonly use 3.5% as a more conservative starting point for a 30-year drawdown horizon.

At 3.5%, a pension pot of:

• £300,000 supports annual withdrawals of approximately £10,500
• £500,000 supports approximately £17,500
• £1,000,000 supports approximately £35,000

These figures are starting points for a 30-year period at a balanced allocation (roughly 50 to 60% equities). They are not guarantees — they are based on historical analysis and reasonable assumptions about future returns. Withdrawal rates should be reviewed annually.

Dynamic Withdrawal Strategy

A rigid withdrawal rate is not always optimal. A dynamic withdrawal strategy adjusts the amount taken each year based on portfolio performance:

• In years of good portfolio growth, take the planned withdrawal or slightly more.
• In years of poor performance, reduce withdrawals temporarily — even by 10 to 20% — to preserve the fund.

This flexibility significantly extends the period over which the fund can sustain income and reduces the risk of running out of money in a prolonged poor-return environment.

Natural Yield vs Total Return

Two broad philosophical approaches exist for managing drawdown income:

Natural Yield

The natural yield approach invests in income-generating assets — high-dividend equities, corporate bonds, infrastructure, commercial property — and lives off the income they produce without drawing on capital. The capital appears intact throughout.

Advantages: psychologically straightforward; income is relatively predictable; capital is not being eroded.

Disadvantages: forces a yield-driven portfolio that may sacrifice total return; dividend income is not guaranteed (dividends were cut across many sectors during the 2020 pandemic); high-yield assets are often more volatile than a diversified portfolio; the capital appearing "intact" in nominal terms may be significantly eroded in real terms by inflation over a 30-year retirement.

Total Return

The total return approach treats the pension fund as a single pool of assets aimed at the best risk-adjusted return, with income derived from a combination of natural income and selective capital disposal. Each year, the income requirement is met partly from dividends and coupons and partly by selling whichever assets represent the best sale — perhaps assets that have risen significantly, or asset classes that are overweight following market movements.

Advantages: more flexible and generally more efficient; does not force a yield-constrained portfolio; allows genuine portfolio optimisation.

Disadvantages: requires active management; can feel psychologically uncomfortable when you are "spending capital"; requires discipline to avoid selling in a downturn.

For most drawdown investors, a hybrid approach works well: maintain a natural yield income layer from bonds and income equity funds, supplement with selective capital disposal from the long-term bucket during strong markets, and use the cash buffer to avoid forced selling in weak markets.

Asset Allocation Across the Drawdown Period

Asset allocation in drawdown should not be static. At age 65, a 30-year drawdown horizon is realistic, and a heavy cash or bond allocation would sacrifice substantial growth. At age 85, the time horizon is much shorter and the need for liquid, stable assets increases.

A broadly sensible trajectory for a healthy 65-year-old in drawdown might be:

• Age 65: 55 to 65% global equities; 25 to 35% bonds and multi-asset; 10% cash buffer
• Age 75: 45 to 55% equities; 30 to 40% bonds; 10 to 15% cash
• Age 85: 30 to 40% equities; 40 to 50% bonds; 15 to 25% cash

These allocations depend significantly on other income sources (state pension, DB pension, rental income), risk tolerance, health, and whether leaving a legacy is a priority. A drawdown investor with a full state pension and a DB pension covering most basic costs can afford to be more aggressive with the SIPP drawdown fund. One who is entirely reliant on the SIPP needs a more conservative allocation.

Annual Review Checklist

A drawdown pension requires an annual review — not simply an annual statement review, but a deliberate assessment of the following:

1. Current withdrawal rate: is it still sustainable given the current fund value and life expectancy?
2. Portfolio performance: has allocation shifted significantly? Do the buckets need rebalancing?
3. Health and life expectancy: have circumstances changed? Are the long-term assumptions still reasonable?
4. Tax efficiency: are withdrawals being timed to use the personal allowance? Is income being drawn efficiently across tax years?
5. Death benefits: are expression of wishes nominations current? Are beneficiaries aware?
6. Inflation: is the income level keeping pace with the cost of living?

How Global Investments Can Help

Global Investments advises clients on the investment and income strategy for their drawdown pensions, including internationally mobile clients with complex tax situations. We can help you assess whether your current withdrawal rate is sustainable, review your asset allocation, and ensure your drawdown strategy is structured for both efficiency and resilience.

For expats in drawdown, we also address the interaction with overseas tax rules and double taxation treaties — ensuring that pension income is drawn in the most tax-efficient manner in your country of residence.

Pension investments can fall as well as rise in value. Past performance is not a guide to future results. The value of tax relief depends on individual circumstances and may change. This guide reflects the rules as at 2026, and you should seek regulated financial advice before making investment or withdrawal decisions.