Estate Planning Over 40 UK (2026): What You Need to Put in Place

For most people in the UK, the 40s represent the convergence of the highest financial risk with the greatest accumulation of assets: (1) Peak mortgage debt and property ownership: many people in their 40s own their main residence (often with a significant mortgage) and may be acquiring buy-to-let or second properties. The family home is typically the largest single asset — and the largest single IHT exposure. The Residence Nil-Rate Band (RNRB) rewards passing the family home to direct descendants, making it critical to have the right will in place; (2) Rapidly growing pension wealth: auto-enrolment and 20+ years of contributions mean that workplace and personal pensions are often the second largest asset. In your 40s, the pension fund is growing at its fastest rate (compounding over the next 20–30 years before retirement). Making the right expression of wishes now — and understanding how pension funds interact with IHT from April 2027 — matters more than ever; (3) Dependants at their most vulnerable: children are likely in school or secondary education. A parent's death or incapacity at this stage would have the most severe practical impact — children are too young to fend for themselves, and they face 10–15 more years of financial dependence. Guardian appointment and children's trusts in the will are urgent priorities; (4) Longest gifting runway: IHT planning benefits from time. The seven-year rule (PETs) and normal expenditure out of income exemption (IHTA 1984 s.21) both work through consistency over time. Starting IHT gifting in your 40s gives a 20–25 year runway before the most common age of death — dramatically more effective than waiting until your 60s; (5) Health and insurability: life insurance and income protection are most affordable (lowest premiums) in your 40s compared to your 50s or 60s. Every year you delay increases premiums and the risk of becoming uninsurable due to health conditions; (6) Least planning done: research consistently shows that people in their 40s are the least likely to have a current will, LPAs, or life insurance in trust — despite having the most to lose.

For someone in their 40s with a partner and young children, the will needs to address several specific priorities: (1) Guardian appointment (Children Act 1989 s.5): naming a guardian for minor children is the highest priority. Without this, the court decides. The will must name a primary guardian and a fallback. Always have the conversation with the proposed guardian before naming them; (2) Trust for minor children: do not leave assets outright to children who are under 18 — they cannot legally hold significant assets. A bereaved minor's trust (IHTA 1984 s.71A) holds the assets until the child is 18 with no IHT periodic charge; an age-25 trust (s.71D) delays payment to 25 with a modest exit charge. Consider whether 18 is an appropriate age for your children to receive potentially substantial wealth; (3) Mirror wills and the RNRB: for married couples, mirror wills (leaving everything to each other, then to children) are common and often appropriate. This ensures the full RNRB and transferable NRB (up to £1 million combined) are available on second death. However, consider: (a) what if the survivor remarries — does the second spouse take everything under the new will? A life interest trust in the family home protects the children's ultimate inheritance; (b) mutual will risk — mirror wills are not mutual wills; the survivor is free to change their will; (4) Business interests: if you run a company or are a partner, the will needs to address the business. Does Business Property Relief (BPR) apply? Is there a shareholder agreement with buy-out provisions? Does the executor have power to continue trading? (5) Digital assets: cryptocurrency, online accounts, IP, royalties — are they documented and accessible to the executor? Include a digital assets letter of wishes alongside the will; (6) Review frequency: wills written in your early 40s should be reviewed: on the birth of each child; on any divorce/separation; when buying or selling property; when assets change significantly; as children approach 18; every 5 years regardless.

Estate planning in your 40s goes beyond what happens when you die — it must also cover what happens if you lose capacity or ability to earn: (1) Lasting Powers of Attorney — both partners: both partners should register both a Property and Financial Affairs LPA and a Health and Welfare LPA. In your 40s, incapacity is more likely to result from accident or sudden illness than from dementia — the risk is very real. Cost: £82 per LPA per person (OPG fee; 2026/27) + professional help if needed. Registration: 4–16 weeks. The alternative if you lose capacity without an LPA — Court of Protection Deputyship — takes 6–12 months and costs £3,000–£5,000+; (2) Income protection insurance: if you earn £60,000/year and your family relies on that income, your incapacity for 6–12 months would be financially devastating. Income protection insurance pays a monthly income (typically 60–70% of gross earnings) after a 'deferred period' (1, 3, or 6 months) until you recover or retire. Unlike critical illness cover (which pays a lump sum for specific named conditions), income protection covers any illness or injury preventing you from working. Premiums in your early 40s are manageable; premiums rise steeply in your 50s. Buy now; (3) Critical illness cover: pays a lump sum on diagnosis of specific serious conditions (heart attack, stroke, cancer, etc.). Can be used to clear a mortgage. Combined with life insurance cover; often sold as an add-on or separate policy; (4) Life insurance in trust: term life insurance (level or decreasing term) to cover the mortgage and provide family income until children are independent. Written in trust so it pays out immediately without probate and outside the estate (no IHT). Both partners should have separate policies; (5) Death in service benefit: check what your employer provides. Typically 2–4× salary paid to your estate (or nominated person) on death while employed. Ask HR for the expression of wishes form and keep it updated — default nominees often go out of date after life changes.

The 40s offer the best opportunity to plan for IHT because time is the most powerful tool: (1) Understand your exposure: calculate your current estimated estate value (property equity + savings + investments + business interests + pension — note pension IHT changes from April 2027). Compare to the available NRB and RNRB. Even if you are not currently over the threshold, growth in property and pension values over 20–30 years may put your estate well into IHT territory at death; (2) Start regular gifting: the annual gift exemption (£3,000/year; unused allowance carries forward one year) is simple to use and completely IHT-free. Start now — 20 years of £3,000 gifts to children/grandchildren = £60,000+ removed from the estate tax-free. Additional small gifts of £250/person/year also exempt; (3) Normal expenditure out of income (IHTA 1984 s.21): if your income comfortably exceeds your expenditure, regular gifts from surplus income are exempt from IHT with no 7-year clock. These must be habitual, from income (not capital), and must not reduce your standard of living. Keep records — a simple spreadsheet showing annual income, expenditure, and the gifts made is sufficient evidence for HMRC; (4) Potentially exempt transfers (PETs): larger one-off gifts to individuals become fully exempt if you survive 7 years. At 45, a £100,000 PET to an adult child will be exempt from IHT if you survive until 52. At 65, the same gift needs survival to 72. Time is on your side; (5) Pension planning: maximise pension contributions (annual allowance: £60,000 in 2026/27) now — pension funds grow IHT-free (pensions are not included in the estate for IHT purposes until April 2027; from April 2027, undrawn pension funds will be included in the estate). Consider drawdown strategy carefully in anticipation of the April 2027 changes; (6) Business Property Relief: if you own qualifying trading company shares, BPR provides 100% IHT relief after 2 years. Ensure the shares qualify (mainly trading, not mainly investment). Review any shareholder agreements to ensure the shares remain in your hands (pre-emption rights on transfer); (7) Review the will for RNRB: ensure the family home will pass to direct descendants. The RNRB (£175,000 per person; transferable) specifically rewards this. If you leave your home to a discretionary trust, the RNRB may be lost.

If you are in your 40s and have not yet put estate planning in place, here is a practical priority order: (1) URGENT (do this week): write or update your will if you have children — especially guardian appointment. An out-of-date will that does not name a guardian leaves your children's future in the court's hands. Cost: from £35 (WillSafe UK DIY kit) or £200–£500 (solicitor); (2) URGENT (this month): register Lasting Powers of Attorney for both partners — both P&FA and H&W types. You need capacity to register an LPA — if an accident happens tomorrow, it is too late. Cost: £82 per LPA (OPG fee). Processing: 4–16 weeks; (3) HIGH PRIORITY (within 3 months): check life insurance: is it adequate? Is it in trust? Does it cover the mortgage? If not, arrange term life insurance written in trust. Also check income protection insurance; (4) HIGH PRIORITY (within 3 months): check pension expression of wishes forms — are they current? Does the pension trustee know who to pay? Update them with current nominated beneficiaries; (5) MEDIUM PRIORITY (within 6 months): start regular annual gifting (£3,000 annual exemption; gifts from surplus income). Keep a simple record; (6) ONGOING: review will and LPAs every 5 years or after major life events (new child; house purchase; divorce; business change; death of a beneficiary or executor). Review IHT position annually.