£100,000: Weighing Drawdown Against an Annuity
At £100k the two routes finally produce incomes big enough to shape your lifestyle, which makes the choice feel weightier — get it wrong and you either give up growth and inheritance you could have kept, or carry investment risk you never needed.
What follows compares both structures using this pot size throughout: the yearly income, the failure modes, the tax mechanics and the middle ways.
Side by Side: the £100k Income Numbers
| Route | Income in Year 1 | Income in Year 10 | Income in Year 20 | Guaranteed? |
|---|---|---|---|---|
| Level annuity | £3,900 | £3,900 | £3,900 | Yes |
| RPI-linked annuity | £2,625 | £3,528 | £4,741 | Yes |
| Drawdown at 4% | £3,000 | £3,314 | £3,661 | No |
| Drawdown at 3.5% | £2,625 | £2,900 | £3,203 | No |
Treat the drawdown rows as illustrations, not promises: they rest on 5% annual growth and an unwavering withdrawal rate. A rough patch early in retirement would drag the real outcome below what the table shows.
What Drawdown Offers a £100k Saver
- An adjustable income: dial withdrawals up for the kitchen refit, down when little is happening — the income fits your life instead of the reverse.
- Continued investment: the undrawn balance stays in the market, so the income base can keep expanding through retirement.
- A legacy option: what you never spend goes to your beneficiaries — untaxed if you die before 75, at their marginal rate thereafter.
- Reversibility: ownership stays with you; the strategy, including a later annuity purchase, can change at any time.
What an Annuity Offers a £100k Saver
- Certainty for life: £3,900 a year, every year, regardless of what markets do or how long you live.
- Freedom from investing: no allocations, no downturn anxiety, no decisions after day one.
- Hands-off by design: a purchased annuity needs no maintenance whatsoever.
- Longevity cover: reach a great age and the payments simply keep coming, where an invested pot might have run dry.
- Steady-state budgeting: knowing the income to the pound makes planning bills trivial.
The Downside Ledger at £100k
Drawdown's exposures
Holding £100k in drawdown means accepting:
- Market drawdowns: a 30% slump in year one takes £75,000 down to £52,500 — and a fixed 4% withdrawal from the reduced fund quickens depletion.
- Outliving the money: an invested pot carries no promise of lasting as long as you do.
- Human nature: spending freely when markets are kind is exactly what leaves pots short when they turn.
- Cost erosion: at a 0.75% annual charge, roughly £563 leaves a £100k pot in the first year alone — and the drag compounds.
An annuity's exposures
The guaranteed route is not risk-free either:
- Purchasing-power decay: a level £3,900 will be worth about £2,145 in today's money after 20 years at 3% inflation.
- Early-death regret: die soon after buying and the insurer keeps the balance, unless you paid for a guarantee period.
- A permanent rate: whatever rate you secure is fixed forever; later improvements pass you by.
- No estate value: standard terms leave beneficiaries nothing.
Tax: Same Rates, Different Control
Income tax draws no distinction between the two — annuity payments and drawdown withdrawals are both taxed as earnings at your marginal rate. The lever drawdown adds is timing: you decide which tax year each pound of income falls into.
With £100k behind you that lever is worth pulling. Draw harder in low-income years to fill the basic-rate band cheaply; ease off when other earnings would push you toward the higher-rate line. Done consistently, the saving ranges from hundreds to thousands of pounds annually.
Splitting the Difference
Nothing forces an all-or-nothing decision, and with £100k a partial approach is common advice:
- Buy guaranteed cover for the bills that never pause — rent or housing costs, utilities, groceries
- Run the remainder as an invested drawdown fund for flexible and discretionary spending
- Postpone further annuitisation: rates improve as you age, so converting later usually buys more income per pound
A Framework for the £100k Decision
Lean drawdown when guaranteed income already exists elsewhere in your finances, when volatility does not cost you sleep, and when leaving something behind is part of the plan.
Lean annuity when certainty is the whole point, when the State Pension is your only other reliable income, or when health issues unlock an enhanced rate worth taking.
And keep the hybrid on the table — for many £100k retirees the strongest structure is some of each, sized with help from a regulated adviser.