Annuity vs Drawdown at the Retirement Crossroads: A Rigorous Comparison

The pension freedoms of 2015 ended the near-universal default of annuity purchase at retirement. In the years following, drawdown displaced annuities as the dominant choice for defined contribution retirees — by 2023, drawdown outnumbered new annuity purchases by roughly four to one. Yet the financial case for annuities has strengthened considerably since 2022, and the FCA's Thematic Review of Retirement Income Advice (TR24/1, published in 2024) found that many retirees had chosen drawdown without fully understanding the risks they were accepting.

This guide compares annuities and drawdown rigorously — including the mortality pooling advantage of annuities that is almost never discussed in consumer literature, the inflation erosion risk in fixed annuities, and the pound-cost ravaging effect in drawdown that can derail even a well-invested portfolio in a bad sequence of returns.

The Annuity Advantage Nobody Discusses: Mortality Pooling

An annuity's fundamental economic advantage is mortality pooling — sometimes called the "mortality credit" or "longevity insurance premium." When you buy an annuity, you are not merely converting your capital into income: you are pooling your longevity risk with thousands of other policyholders.

Consider a simple example. An insurer offers a lifetime annuity to a group of 1,000 people aged 65, all with identical pots of £100,000. Actuarially, the insurer expects some to die early (within five years) and some to live very long (to 95 or beyond). The insurer can pay a higher income to all policyholders because those who die early effectively subsidise those who live long — the capital that would have been returned to early deaths' estates is instead pooled and used to extend income to survivors.

This mortality credit is equivalent to an additional investment return that drawdown — by its nature — cannot replicate. In a drawdown arrangement, there is no pooling: if you die early, the capital passes to your estate. If you live to 95, you bear the full investment risk alone.

Research by Professor Moshe Milevsky and others estimates that the mortality credit adds the equivalent of one to two per cent per year to the effective return achievable from an annuity relative to drawdown, for individuals at standard ages. For a 75-year-old, the mortality credit is substantially higher — the actuarial loading for longevity at advanced age is the primary reason annuity rates per pound increase significantly with purchase age.

This means that for very long-lived individuals — and neither you nor your adviser knows at retirement whether you will be one — the annuity is likely to pay out more total income than drawdown from the same pot, assuming the drawdown portfolio achieves typical returns. Drawdown outperforms only if you die relatively early or achieve above-market investment returns. Neither outcome should be planned for.

The Inflation Risk in Fixed Annuities

The conventional critique of annuities is correct: a level (fixed) annuity buys a fixed nominal income, which erodes in real terms with every year of inflation. A £12,000 per year annuity that feels comfortable at 65 is worth approximately £8,000 in today's purchasing power after twenty years of two per cent inflation. After thirty years, it is worth barely £6,700.

The maths is stark: two per cent annual inflation compounds to erode purchasing power by approximately:

• 22 per cent over 11 years
• 33 per cent over 20 years
• 45 per cent over 30 years

For a 65-year-old woman with a 25-year life expectancy, a fixed annuity carries substantial real-return risk.

The solution — an index-linked annuity or an annuity with a fixed annual escalation rate — addresses this but at a significant cost to initial income. An annuity with three per cent per year escalation typically pays initial income 30 to 35 per cent lower than a level annuity. Many retirees baulk at this trade-off and choose the higher initial income, accepting the long-term erosion of real value.

Index-linked annuities (rising with RPI or CPI) are the cleanest solution but carry the highest initial income penalty — typically 40 to 50 per cent below level income. In an environment where many retirees have discretionary expenses that will decline naturally with age, the financial justification for full inflation linkage is not always as clear as it might appear.

Sequencing Risk and Pound-Cost Ravaging in Drawdown

Drawdown's fundamental vulnerability is sequencing of returns risk — the risk that poor investment returns in the early years of retirement, combined with ongoing withdrawals, permanently impair the portfolio even if long-run average returns are acceptable.

The mechanism — sometimes called "pound-cost ravaging" — is the mirror image of pound-cost averaging. When a portfolio falls in value, a retiree making fixed withdrawals must sell more units to generate the same cash income. Those units are sold at a depressed price and are therefore unavailable to participate in the subsequent recovery. The portfolio is "hollowed out" from the bottom at exactly the wrong moment.

A simple illustration: two retirees each begin with £400,000 in drawdown and withdraw £20,000 per year. The long-run average investment return is five per cent per year for both. Retiree A experiences five per cent annual returns every year — the portfolio lasts comfortably beyond thirty years. Retiree B experiences a severe market fall of 30 per cent in years one and two, followed by the same long-run returns as Retiree A. Despite an identical average return, Retiree B's portfolio may be exhausted fifteen to twenty years earlier because of the sequence of those early losses.

The FCA's work on retirement outcomes (the Retirement Outcomes Review and the later Thematic Review of Retirement Income Advice) found that many drawdown customers were significantly underprepared for sequencing risk, and that existing drawdown products and advice were not doing enough to help customers understand or manage it. The FCA noted that customers were often overly reliant on assumed investment returns in illustrations that did not adequately model the downside scenario.

The FCA's Retirement Income Advice Review: Key Findings

The FCA's Thematic Review of Retirement Income Advice (TR24/1), published in 2024, is required reading for anyone advising on or choosing between annuities and drawdown. Key findings relevant to this comparison:

Non-advised customers are making poor decisions. The majority of consumers making drawdown and annuity decisions are doing so without taking regulated financial advice. Non-advised customers showed significantly higher rates of suboptimal outcomes — particularly in cash allocations, failure to shop around for annuities, and drawdown withdrawals at rates likely to exhaust savings prematurely.

Annuity take-up has increased but remains below expected. Following the 2022 increase in annuity rates (driven by rising gilt yields), annuity sales increased substantially. Yet FCA modelling suggested that a significant proportion of drawdown customers — particularly those with smaller pots and lower investment sophistication — would likely achieve better outcomes from annuitisation.

Cash holding in drawdown is high. A significant proportion of drawdown portfolios remained heavily or entirely invested in cash after the onset of pension freedoms, representing a real-terms drag on portfolio growth. Drawdown is only preferable to an annuity if the portfolio is appropriately invested.

A Blended Strategy: The Case for Both

The false binary between "full annuity" and "full drawdown" is one of the most damaging framings in retirement planning. For most retirees, a blended approach is both intellectually and financially superior.

The core logic is as follows:

1. Identify essential fixed costs: Housing, utilities, food, healthcare premiums, council tax, and other non-discretionary expenses. These should ideally be covered by guaranteed income — income that arrives regardless of market conditions.

2. Layer guaranteed income to cover essential costs: The new State Pension (approximately £12,548 per year for 2026/27, at £241.30 per week) provides the first layer. A lifetime annuity can cover the remaining gap between State Pension and essential costs. The annuity amount should be calibrated to cover fixed costs, not aspirational expenditure.

3. Leave discretionary spending to drawdown: Holidays, gifts, home improvements, and other variable expenses can be met from the drawdown pot, which is invested and managed actively.

This approach — known as the "flooring" or "income floor" strategy — captures the mortality pooling benefit of annuities where it matters most (essential expenses) while retaining the flexibility and growth potential of drawdown for discretionary spending. It also manages the psychological cost of watching a drawdown portfolio decline: the essential bills are covered regardless.

The State Pension as Annuity Floor

The new State Pension is, structurally, an inflation-linked lifetime annuity. For the 2026/27 tax year, it pays £241.30 per week, approximately £12,548 per year. It is triple-locked, indexed to the highest of earnings growth, price inflation, or 2.5 per cent per year. It has no dependence on financial markets.

For individuals with a full new State Pension entitlement, this represents a capitalised value of approximately £230,000 to £270,000 in private market terms (depending on the annuity rate assumed). This is a substantial guaranteed income floor before any private pension is touched.

The implication for the annuity vs drawdown decision is clear: the State Pension already provides significant annuity-type income. The marginal value of additional annuity purchase is therefore lower for those with full State Pension entitlement than for those without, reducing the urgency of annuitising private pension savings.

Practical Decision Framework

A structured approach to the annuity vs drawdown decision might proceed as follows:

1. Quantify the guaranteed income floor: State Pension + any defined benefit pension income already secured.
2. Calculate the essential spending gap: Annual essential expenses minus the guaranteed income floor.
3. Assess annuity pricing: Get open-market annuity quotes for the amount needed to close the essential spending gap. Check for enhanced rates based on health.
4. Stress-test drawdown: Model drawdown at a withdrawal rate of 3 to 3.5 per cent of the portfolio in year one, adjusting for sequence risk. Is the pot sufficient to sustain income indefinitely under a pessimistic scenario?
5. Consider the blended strategy: Annuitise the essential income gap; drawdown the remainder.
6. Review at intervals: The annuity vs drawdown balance should be reviewed at least every five years. Annuity rates change. Health changes, affecting enhanced annuity eligibility. Spending patterns change with age.

Costs and Charges

Drawdown involves ongoing investment management charges — typically 0.5 to 1.5 per cent per year of assets under management plus platform charges, depending on provider and investment approach. Over a twenty-year retirement, these compounded costs represent a significant drag on portfolio value.

A lifetime annuity has no ongoing charge once purchased — the premium reflects the insurer's full cost of providing the income. The implicit cost is embedded in the rate offered relative to the risk-free return. In an environment where annuity rates are competitive, this can compare favourably to the compounding drag of ongoing drawdown charges.

Compliance Notes

The choice between an annuity and drawdown is an irreversible decision in respect of annuity purchase — once purchased, a lifetime annuity cannot be surrendered or converted back to a pot. This irreversibility is precisely why independent regulated advice is strongly recommended.

Pension Wise (via MoneyHelper) provides free guidance appointments for those over 50 approaching retirement. This is guidance, not advice. For a decision of this magnitude, regulated independent advice is preferable.

Annuity income and drawdown withdrawals are both taxed as income in the year of receipt under PAYE. The tax position should be carefully modelled as part of the comparison.

How Global Investments Can Help

Global Investments advises internationally mobile clients whose retirement income decisions are complicated by multiple jurisdictions, currency exposure, and the need to co-ordinate UK pension drawdown with overseas property income, investment portfolios, and tax residency.

We model the full retirement income picture — including State Pension, DB income, annuities, drawdown, property income, and offshore investments — to identify the optimal blend of guaranteed and flexible income for each client's specific situation. We are not tied to any annuity provider or investment platform, allowing us to give genuinely independent recommendations.

Nothing in this guide is personal financial advice. Annuity rates, drawdown returns, and tax rules can all change. Investment values can fall as well as rise. Please seek regulated advice before making any retirement income decision.