HM Revenue and Customs (HMRC) has published additional guidance on forthcoming inheritance tax reforms that will incorporate the majority of untouched pension funds into estate calculations from April 6, 2027.
Analysts claim the announcement represents one of the most substantial shifts in inheritance tax planning for years, potentially exposing numerous families to unforeseen tax obligations when transferring wealth across generations.
Andy Wood, the tax expert at Tax Barrister UK, described the reforms as a fundamental change to the post-death treatment of pensions.
He said: “For many years, pensions have been one of the most tax-efficient ways to pass wealth to the next generation because they generally sat outside of a person’s estate for inheritance tax purposes.
Analysts warn families with ‘substantial pension savings’ face a big inheritance tax bill
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“From April 2027, that position changes dramatically. Many families who have built up substantial pension savings could find a larger proportion of their estate becoming liable for inheritance tax.”
The Government initially unveiled these changes as part of broader efforts to prevent pensions from being utilised primarily as inheritance planning tools rather than sources of retirement income.
Under the revised regulations, most unspent pension funds and death benefits will factor into estate value assessments for inheritance tax calculations.
Mr Wood noted that individuals who have intentionally safeguarded their pension wealth in later life may feel the effects most acutely.
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He explained: “A lot of retirees have chosen to draw income from other assets while leaving their pensions untouched because pensions offered valuable inheritance tax advantages.
“Those strategies may become far less effective once pensions are brought into scope for inheritance tax.”
HMRC has confirmed that executors will bear responsibility for locating pension assets, determining their value, and ensuring any inheritance tax owed is settled.
Mr Wood cautioned that this requirement could impose significant administrative burdens on families already coping with bereavement.
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He shared: “Many people have accumulated multiple workplace pensions throughout their careers. Tracking down historic schemes, obtaining valuations and dealing with several providers could become a time-consuming process for executors.
“Families should make sure records of pension arrangements are kept up to date and easily accessible to avoid unnecessary complications.”
Mr Wood observed that beneficiaries may consequently face delays receiving inherited pension funds compared with current arrangements.
Despite the reforms, certain existing protections will continue to apply, with exemptions preserved for transfers to spouses and civil partners as well as most death-in-service benefits.
The tax expert emphasised that while not every household will be affected, those holding substantial pension savings should act promptly.
“These changes will not affect every family, but anyone with significant pension savings should review their estate planning arrangements sooner rather than later,” he advised.

