Intergenerational wealth is one of the biggest financial conversations happening in the UK right now. Over the next 30 years, an estimated £5.5 to £7 trillion will pass from Baby Boomers to Millennials and Gen Z. That is the largest transfer of wealth in British history, and it is already underway.
Inheritances in the UK now total more than £100 billion every year, and that number is climbing. If you are building wealth today, the question is not just how to grow it. It is how to pass it on without HMRC taking a chunk.
This guide covers what intergenerational wealth actually means, the tax rules you need to know, and the practical steps to protect what you build.
What Is Intergenerational Wealth?
Intergenerational wealth refers to assets passed from one generation to the next. That includes property, savings, investments, pensions, and business interests. It is how wealth compounds across lifetimes rather than being built and spent within a single generation.
Baby Boomers currently hold more than half of the UK’s total wealth, estimated at around £5.1 trillion. As they age, that wealth moves downward through inheritances and lifetime gifts. For context, more than £1 trillion was expected to transfer by the end of 2025 alone.
However, the picture is more complicated than the headlines suggest. The median inheritance for a typical 61-year-old in the UK is around £33,000 according to HMRC and ONS data. The big transfers are concentrated at the top. Wealthier families are significantly more likely to be recipients, with the richest fifth of earners twice as likely to receive a significant transfer as the poorest fifth.
Why Inheritance Tax Is the Biggest Threat to Family Wealth
The UK’s inheritance tax rate is 40% on everything above the nil-rate band. That is a serious number, and it catches more estates every year because the thresholds have been frozen since 2009 while property prices have continued to rise.
Here is how the current system works for 2025/26:
The Nil-Rate Band
Every individual has a nil-rate band of £325,000. Anything above that is taxed at 40% on death. This threshold will remain frozen until April 2030.
The Residence Nil-Rate Band
An additional £175,000 allowance applies if you leave your main home to direct descendants such as children or grandchildren. This takes your personal tax-free threshold to £500,000. For couples, both allowances can be combined, meaning up to £1 million can be passed on completely free of inheritance tax. However, this tapers away on estates worth more than £2 million, reducing by £1 for every £2 above that figure.
The Seven Year Rule
Gifts made to individuals during your lifetime are known as Potentially Exempt Transfers. If you survive for seven years after making the gift, it falls outside your estate entirely. If you die within that window, the gift may be included in your estate and subject to inheritance tax. A sliding taper relief applies after three years, reducing the tax charge gradually before it disappears at year seven.
Smart Ways to Pass Wealth Down
Understanding the rules opens up a range of legitimate planning tools. None of these require offshore structures or expensive schemes. They are built into the UK tax system and available to anyone who plans ahead.
Step 1 – Use Your Annual Gift Allowance
Every year, you can give away £3,000 completely free of inheritance tax. If you did not use the previous year’s allowance, you can carry it forward once, allowing a maximum of £6,000 in a single year. You can also make small gifts of up to £250 per person per year to as many people as you like, as long as they have not already received part of your £3,000 allowance.
On top of that, regular gifts made from surplus income are exempt with no upper limit, provided they are habitual, consistent, and do not affect your standard of living. Monthly contributions to a grandchild’s Junior ISA, for example, can qualify under this rule. Keep proper records.
Step 2 – Gift on Marriage
Gifts made in connection with a wedding or civil partnership carry their own exemptions. Parents can give up to £5,000, grandparents up to £2,500, and anyone else up to £1,000.
Step 3 – Max Out ISAs for Long Term Growth
If you are building wealth to pass on, ISAs are one of the most efficient vehicles available. There is no income tax or capital gains tax on growth inside an ISA, and the current annual allowance is £20,000 per person. For a couple, that is £40,000 a year sheltered from tax. If you want to understand more about which ISA works best for your situation, our guide on the different types of ISAs breaks this down clearly.
Step 4 – Think About Pensions Differently
Pensions sit outside your estate for inheritance tax purposes for now, making them a powerful tool for passing wealth down. From April 2027 this is set to change, with pension assets brought into the scope of inheritance tax for the first time. That gives a limited window to review how your pension interacts with your overall estate plan.
For anyone in their 30s or 40s thinking about this now, our post on pension contributions in your early 30s covers how to approach this while time is on your side.
Step 5 – Consider Trusts for Complex Situations
Trusts allow you to pass assets across generations while maintaining some level of control over how and when they are distributed. They are useful for protecting assets for younger children, managing wealth across multiple generations, or handling more complex family arrangements. They require proper legal advice and come with their own tax implications, but for larger estates they can be highly effective.
The Assets Being Passed Down
Most intergenerational wealth in the UK sits in three main buckets.
Property makes up around 45% of total UK net wealth. Most of that is tied up in primary residences, which are not liquid until they are sold or borrowed against. For many families, the main home is the single largest asset changing hands.
Pensions are the other major driver. According to ONS data, the wealthiest decile of UK households holds around 50% of their wealth in pensions. The tax relief on contributions, combined with compound growth over decades, makes a pension pot one of the most valuable things you can pass on.
Investments, including stocks, funds, and business assets, round out the picture. These are often where the real wealth building happens across generations because they compound without the illiquidity of property.
The Reality Behind the Headlines
The £5.5 trillion figure gets a lot of coverage, but it is worth being clear about who actually benefits. Fewer than one in three UK adults expect to receive a meaningful inheritance in their lifetime according to Resolution Foundation research. Most of the big transfers happen within already wealthy families.
That means if you are building wealth from scratch, you cannot count on an inheritance. You are creating intergenerational wealth for the next generation, not receiving it from the previous one. The goal is to make sure your children or grandchildren are in a different position to the one you started from.
On top of that, Boomers are living longer and spending more. A recent survey found that 75% of older respondents said they intended to enjoy their retirement, with leaving money to their children not being a priority. The wealth transfer will happen, but it will be gradual, and it will be smaller for most people than the headlines suggest.
Start the Conversation Early
The biggest mistake families make with intergenerational wealth is leaving the conversation too late. Wills become outdated. Allowances go unused. Seven year clocks never start. Tax bills land that could have been reduced or avoided entirely.
The practical steps are not complicated. Use your annual gift allowance. Review your will. Understand where your estate stands against the nil-rate band. Think about how your pension fits into the picture before the 2027 rule change. If your estate is approaching £1 million or above, get proper advice.
Content on IceburgWealth.com is for informational purposes only and not intended as investment advice. While we strive to provide accurate and up-to-date information, Iceburg Wealth is not responsible for any errors or omissions, or for outcomes resulting from the use of this information. Readers should seek professional advice before making any financial decisions.