If you have a pension, know someone with a pension, or hope to leave money to your family one day, there is a major change coming that deserves far more attention than it is getting.
On 6 April 2027, the UK government will fundamentally change how many pensions are treated when someone dies. For decades, pensions—particularly Self-Invested Personal Pensions (SIPPs)—have enjoyed a unique advantage. In many cases, they could be passed on to beneficiaries outside of the inheritance tax system.
That advantage is about to disappear for many families.
The change may sound technical, but its impact is surprisingly simple. Someone who spent years carefully building a £400,000 pension pot could leave a very different inheritance after April 2027 than they would have under today’s rules.
Families who assumed their pension would pass largely untouched to children or grandchildren may discover that a significant portion is now exposed to inheritance tax. What makes this story remarkable is not just the size of the change. It is how few people seem aware of it.
While headlines have focused on inflation, mortgages, and the state pension, one of the biggest estate-planning changes in a generation has been quietly moving through Parliament. The reforms were announced in the Autumn Budget 2024, legislated through Finance Act 2026, and will take effect for deaths occurring on or after 6 April 2027.
HMRC has already published detailed technical guidance explaining how the new system will work. This is not a minor adjustment around the edges. It changes how many people will think about retirement, inheritance, tax planning, and even how quickly they spend their pension savings.
So what exactly is changing?
How Pension Inheritance Works Today
To understand the significance of the new rules, it helps to understand why pensions became such a powerful inheritance planning tool in the first place.
Traditionally, pensions were designed for one purpose: providing an income in retirement. However, a series of pension reforms over the last decade transformed how flexible pensions became. Savers gained greater freedom over how and when they accessed their pension money.
At the same time, unused pension funds often remained outside the deceased person’s estate for inheritance tax purposes. That created an interesting outcome. Many retirees began spending other assets first.
Rather than drawing heavily from their pension, they would often use cash savings, investment portfolios, or other taxable assets during retirement. The pension was left largely untouched because it sat outside the inheritance tax net.
Financial planners frequently referred to pensions as one of the most tax-efficient assets to pass on to future generations. For many families, the pension effectively became the last pot of money they wanted to spend.
That is precisely the behaviour the government is now trying to change.
Why Is The Government Changing The Rules?
According to HMRC, the government believes pensions have increasingly been used as a vehicle for transferring wealth between generations rather than fulfilling their original purpose of funding retirement.
In its technical guidance, HMRC specifically stated that the reforms are intended to remove distortions that have led pensions to be used and marketed as inheritance planning tools rather than retirement income vehicles.
In simple terms, the government believes pensions have become too attractive as an inheritance tax shelter.
From the government’s perspective, two people with identical wealth could face very different inheritance tax outcomes simply because one person’s wealth was held inside a pension while the other’s was held elsewhere.
The reforms aim to create a more consistent tax treatment across different types of assets. Whether you agree with that objective depends on your perspective. The government sees a tax loophole being closed.
Many pension savers see a long-established planning strategy being removed. Both viewpoints can be true at the same time.
What Changes On 6 April 2027?
From 6 April 2027, most unused pension funds and pension death benefits will be included within the value of a deceased person’s estate for inheritance tax purposes. That means pension wealth that was previously outside the estate may now become part of the inheritance tax calculation.
The key phrase here is “unused pension funds.” The government is primarily targeting pension money that remains unspent when someone dies. For many SIPP holders, this will mean their pension can no longer be viewed as a separate inheritance vehicle sitting safely outside the estate.
Instead, it becomes another asset that potentially contributes towards inheritance tax liability. The practical effect is that more estates will become liable for inheritance tax, and many existing inheritance tax bills will become larger.
Government estimates suggest around 10,500 estates each year will become liable for inheritance tax when they previously would not have been. Around 38,500 estates are expected to pay more inheritance tax than under the current rules. HMRC estimates the average increase in inheritance tax liability could be around £34,000 for affected estates.
Those figures alone illustrate why this reform matters.
What This Means For A £400,000 Pension Pot?
Let’s look at a simplified example.
Imagine someone dies with:
A home and other assets worth £300,000.
A SIPP worth £400,000.
Under the current system, the pension may largely sit outside the inheritance tax calculation. The estate for inheritance tax purposes might effectively be £300,000.
After April 2027, the position could be very different. The £400,000 pension may now be included within the estate valuation. Suddenly, the estate is worth £700,000 instead of £300,000. That does not automatically mean inheritance tax will be due, because;
- Inheritance tax allowances still exist.
- Spousal exemptions still exist.
- Various reliefs still apply.
However, many estates that previously sat comfortably below inheritance tax thresholds may find themselves much closer to them—or pushed beyond them entirely.
This is why commentators describe the change as a major shift. The pension itself has not changed, neither has investment performance nor the beneficiaries. Yet the inheritance outcome can be dramatically different.
Does This Mean Everyone Will Lose 40% Of Their Pension?
No. it does not. This is one of the biggest misconceptions surrounding the reform. The headlines often make it sound as though every pension pot will suddenly face a 40% tax charge. That is not how inheritance tax works.
The actual impact depends on numerous factors including:
- The total value of the estate.
- Whether assets pass to a spouse or civil partner.
- Available nil-rate bands.
- Residence nil-rate band eligibility.
- Other estate planning arrangements.
For some families, the change may have little practical effect. For others, it could increase inheritance tax liabilities by tens of thousands of pounds. The difference depends entirely on individual circumstances.
Who Is Most Likely To Be Affected?
The people most exposed to the changes tend to fall into three groups.
The first group consists of individuals who intentionally left their pension untouched during retirement. Many affluent retirees followed a strategy of spending ISA money, cash savings, or taxable investments first while preserving their pension for inheritance purposes.
That strategy becomes significantly less attractive after 2027.
The second group includes people whose estates sit close to inheritance tax thresholds. A pension pot that was previously ignored for inheritance tax purposes may suddenly push an estate above the threshold.
The third group includes those who viewed their pension as a family wealth-transfer vehicle. Some families expected pension wealth to pass efficiently through multiple generations. The tax calculations behind that strategy are now changing.
Who Is Not Affected?
Contrary to some alarming headlines, not everyone will feel the impact. Many estates remain well below inheritance tax thresholds. Many retirees spend most of their pension during retirement anyway. Spouses and civil partners continue to benefit from important inheritance tax exemptions.
Certain pension-related benefits are also excluded from the reforms. For example, government guidance states that death-in-service benefits paid from registered pension schemes will remain outside inheritance tax.
As a result, millions of pension savers may notice little practical impact on their family finances. The people most affected are generally those with substantial unused pension wealth remaining at death.
What Does This Mean For Retirement Planning?
This may be the most important question of all. For years, retirement planning often followed a relatively straightforward hierarchy;
- Spend taxable assets first.
- Leave the pension alone.
- Pass the pension to the next generation.
The new rules challenge that approach. Many advisers now expect retirees to think more carefully about balancing withdrawals across different accounts. Instead of preserving pensions at all costs, some retirees may decide to draw pension income earlier.
Others may increase gifting during their lifetime. Some may use pension funds more actively rather than treating them as an inheritance vehicle.
Interestingly, there is already evidence of behavioural change. Financial advisers have reported increased interest in pension withdrawals, gifting strategies, and annuities as savers reassess how best to use their retirement assets before the new rules arrive.
Is This Good News Or Bad News?
The answer depends entirely on who you are. For the Treasury, it is good news. The reforms are expected to raise significant tax revenue while reducing what policymakers view as unfair advantages within the inheritance tax system.
For retirees who planned to use their pension primarily for retirement income, the change may have little effect.
For retirees who planned to leave substantial pension wealth to children or grandchildren, it is undoubtedly less welcome. The reality sits somewhere in the middle. The reform does not destroy the value of pensions.
Pensions remain one of the most powerful retirement savings vehicles available in the UK. They still offer income tax relief on contributions. They still provide tax-efficient investment growth. They still remain central to retirement planning. What has changed is their role in inheritance planning.
What Should You Do Before April 2027?
The worst response is panic. The best response is preparation. The rules do not take effect until 6 April 2027, which means there is still time to review your position carefully. Start by understanding the likely size of your estate, including your pension.
Review your pension beneficiary nominations and expression-of-wish forms. Check that your will remains appropriate. Consider whether your retirement withdrawal strategy still makes sense under the new rules. Think about whether lifetime gifting might play a role in your broader plans.
Most importantly, avoid making major decisions based purely on tax. Your pension still needs to provide financial security throughout retirement.
A strategy that reduces inheritance tax but leaves you short of income later in life is rarely a good trade-off.
The Bottom Line
The April 2027 pension inheritance tax reform is one of the most significant changes to UK retirement and estate planning in decades. For years, pensions occupied a special place in the tax system. They were not only retirement savings vehicles but also powerful inheritance planning tools.
From 6 April 2027, that changes. Unused pension funds—including many SIPPs—will generally become part of the inheritance tax calculation when someone dies. For some families, the impact will be modest. For others, it could alter inheritance outcomes by tens of thousands of pounds.
The important point is not that pensions have suddenly become bad. They have not. The important point is that the rules have changed, and strategies built around the old rules may need to change too. The people who understand this now have time to prepare. The people who discover it after 6 April 2027 may wish they had paid attention sooner.
