UK pension IHT 2027: spend ISA or pension first?

A retired UK couple has enough secure income to pay most bills, but the old estate-planning habit of preserving the pension is no longer a simple rule. These variants compare three drawdown styles: spend ISA and taxable assets first, draw pension earlier, or hold the current order while the April 2027 implementation is checked.

The couple are around 70, mortgage-free, and have roughly £950,000 of investable wealth across DC pension, ISA, taxable investments, and cash. Their secure income floor is about £4,174/month before tax from two full new State Pensions plus a DB/annuity income stream. The model then layers in £4,200-£4,300/month of normal spending, family gifts, home-refresh costs, accessibility work, and a late-life care reserve.

The question is not whether they can retire. It is whether the published plan to bring most unused pension funds and pension death benefits into Inheritance Tax from 6 April 2027 should make them stop spending ISA first. That policy date and the high-level IHT treatment are sourced in the research brief, but administration, scheme process, and any later guidance still need verification before acting.

Quick variant comparison

The simulator pools all investable assets, so it cannot calculate wrapper-level Income Tax, Capital Gains Tax, or Inheritance Tax. Treat the table as a resilience comparison: how much spending, gifting, tax friction, and care reserve each drawdown style can carry before age 95.

Who this scenario is for

• A UK retired or nearly retired couple with meaningful DC pension, ISA, taxable investment, and cash balances.
• You own your home and expect inheritance tax or beneficiary timing to matter, but you still want to protect care and longevity flexibility.
• You have adult children or other intended beneficiaries, yet you do not want to turn a public tax headline into a brittle withdrawal rule.
• You need an educational model to discuss with an adviser, not legal, tax, or estate-planning advice.

Financial profile

• Secure income: two full new State Pensions are modeled at about £2,091/month combined, using the research brief's 2026-27 figure of £12,547.60/person/year. DB/annuity income adds £2,083/month.
• Spending anchor: the research brief points to a two-person retired household spending band around £3,650-£5,100/month, so the branches use £4,200-£4,300/month before gifts and tax friction.
• Asset mix: the modeled £950,000 is an investable pool, not house value. The source brief frames this as above-median but plausible for an asset-rich UK homeowner couple with a meaningful DC pension.
• Care reserve: every branch includes home-refresh costs, accessibility work, and a late-life care reserve because the biggest planning error is giving or drawing too aggressively before care needs are known.

What the numbers show

All three base branches remain comfortable in the model because secure income covers most recurring spending. The choice is therefore about trade-offs, not survival.

• ISA first carries the highest ongoing gifting pace: £1,000/month through age 82. It deliberately shrinks non-pension assets sooner while keeping the pension as a later-life reserve. That fits the old planning habit, but the 2027 pension-IHT reform means the estate advantage of an untouched pension is no longer automatic.
• Pension early reduces the instinct to leave the DC pension untouched. The model adds £450/month of tax friction through age 83 and cuts gifts to £500/month, reflecting the real-world cost of drawing taxable pension income sooner.
• Wait/review is the conservative administrative branch. It trims spending to £4,200/month, gifts £600/month, pays a short advice/admin review cost, and holds a larger £150,000 care reserve. It is not procrastination; it is a way to avoid overreacting before scheme and HMRC processes are clearer.

The base-case analyzer output shows all three branches finish age 95 with substantial capital: roughly £1.44m for ISA first, £1.44m for Pension early, and £1.55m for Wait/review. That does not mean the largest balance is the best plan. A larger balance can simply mean the couple spent less, gave less, or delayed a decision that may still matter for beneficiaries.

The strategy

ISA first: familiar, liquid, but less obviously tax-optimal after 2027

This branch keeps the old drawdown order: use ISA and taxable assets for gifts and discretionary withdrawals, while the DC pension remains the reserve of last resort. It is easiest to understand and may keep taxable pension income lower during life.

The risk is that old guidance can be stale. ISAs are already normally inside the estate for IHT, and the research brief cites HMRC's published measure bringing most unused pension funds and death benefits into IHT from 6 April 2027. If that implementation lands as described, preserving the pension purely for IHT reasons may be weaker than it used to be.

Pension early: act on the reform, but do not ignore tax drag

This branch starts using pension wealth earlier and treats some extra Income Tax as the cost of reducing future pension concentration. It may suit a couple whose pension is large relative to ISA and cash, or whose beneficiaries would otherwise inherit a complicated pension-heavy estate.

The model intentionally does not show a magic win. Earlier taxable withdrawals can push income into higher tax bands, reduce future pension shelter, and still leave the household with enough taxable wealth to face IHT. Use this branch to test a gradual band-management plan, not a one-off pension raid.

Wait/review: protect optionality until implementation details are checked

This branch keeps the current order for now, schedules review costs, and holds the largest explicit care reserve. It fits couples who know the headline reform matters but do not yet know scheme rules, beneficiary forms, personal representative duties, or the final administrative guidance.

Waiting has a cost: if the pension is very large, another year of inaction can leave the estate more concentrated. But it may be the least damaging default when the alternative is making irreversible gifts or taxable withdrawals based on rules that still need verification for the household's exact scheme.

UK-specific notes

• Pension IHT reform: the research brief cites HMRC material saying most unused pension funds and pension death benefits are due to enter IHT scope from 6 April 2027. Treat scheme-level process, beneficiary timing, and later implementation updates as needs verification before making decisions.
• IHT thresholds: the research brief records the nil-rate band at £325,000 and residence nil-rate band at £175,000, with unused allowances normally transferable between spouses or civil partners and a potential combined qualifying allowance up to £1 million. Eligibility and tapering still depend on facts.
• ISA treatment: ISAs stay tax-free for Income Tax and Capital Gains Tax while held, but the research brief notes they are normally part of the estate for IHT after death.
• Pension withdrawals: pension income is taxable. The model's tax-friction line is only a proxy; it does not calculate personal allowance, basic-rate band, Scottish bands, lump-sum allowance, or scheme-specific death benefits.
• Gifts and care: regular gifts, potentially exempt transfers, and care-fee planning are advice-sensitive. Do not copy the gift entries without checking affordability, records, and survivor needs.

Personalise this for your own plan

• Replace the £950,000 pooled balance with your actual split between DC pension, ISA, GIA, and cash.
• Change the DB/annuity income first. If secure income is lower than £4,174/month, the drawdown-order question becomes a retirement-sustainability question.
• Stress-test one partner living to 98 or 100, and move the care reserve earlier than 2042.
• If your DC pension is much larger than the ISA, compare Pension early against Wait/review before assuming ISA first remains best.
• If your estate is likely below the IHT thresholds after housing, spouse transfers, and gifts, simplify the plan around spending confidence and care resilience rather than tax headlines.

This is an educational model, not personal tax, legal, investment, or estate-planning advice. UK pension, IHT, ISA, gifting, and care rules are simplified and should be checked with a qualified adviser before acting.