Why does complex wealth create tax risk?
The more moving parts your wealth has, the more room there is for something to come up. Income from a business, investments, property, and pensions can interact in ways you never intended – tipping you over a threshold, gradually stripping away an allowance, or landing a gain in a year you would rather it hadn't. Few people set out to create these outcomes. They simply emerge, quietly, as your wealth grows and diversifies.
Business ownership adds a further dimension, as do trusts, defined contribution and defined benefit pensions, property portfolios, and overseas assets. Each carries its own rules, reporting obligations, and reliefs. Held together, without a coordinating view, they can pull in different directions.
Then there's the pace of legislative change. A structure that was entirely appropriate when it was established may no longer serve its original purpose. Reliefs are reformed, rates move, and the treatment of certain assets or residency positions can shift significantly.
This isn't abstract. With reforms to reliefs underway, and unused pensions due to fall within the scope of inheritance tax from April 2027, many families are already revisiting arrangements that once felt settled.
The risk is rarely that a plan was wrong when it was made – it's that it was never revisited. What worked a decade ago isn't guaranteed to work now, and complexity makes that gap harder to spot without a deliberate look.
When should you review your tax and estate plan?
Perhaps the single most valuable habit for anyone with complex affairs is to treat wealth planning as an ongoing discipline rather than a one-off exercise. It's not "set it and forget it". Your life keeps moving, and your plan should move with it.
Certain moments are natural prompts for a thorough review, including:
- The sale of a business, which can transform your balance sheet and liquidity almost overnight.
- An inheritance, which may introduce new assets, new structures, or new obligations.
- Marriage or divorce, both of which can materially change ownership, entitlement, and intentions.
- Retirement, when income needs, pension decisions, and drawdown strategies come to the fore.
- Moving country, where residence and domicile can reshape your entire tax position.
- Significant changes in tax legislation, which may open new opportunities or close existing ones.
Think of the business owner in the weeks after completion, suddenly holding cash when they once held a company – the plan that suited the entrepreneur rarely suits the person they've just become. The value of reviewing at moments like these isn’t simply to recalculate a tax bill. It’s to check that the whole structure – ownership, wrappers, succession plans, and documentation – still reflects your life as it actually is today.
Which tax-efficient wrappers protect your wealth?
Where you hold your wealth can be as important as what you hold. The right wrappers and structures can help your assets be held more efficiently and passed on more smoothly, provided they genuinely fit your circumstances. As with any investment, their value can fall as well as rise, and you may get back less than you put in.
Depending on your situation, the tools available might include:
- Individual savings accounts (ISAs), for accessible, tax-efficient growth and income.
- Pensions and self-invested personal pensions (SIPPs), which can be valuable long-term planning vehicles for many people, though access is age-restricted and the rules can change.
- Offshore bonds, where appropriate to your residence and objectives.
- Investment companies and Family Investment Companies, which can offer control and flexibility for larger, intergenerational portfolios.
- Trust structures, which can help with succession, protection and the timing of wealth transfer.
The important principle here is suitability, not fashion. No single wrapper is inherently "best". A Family Investment Company might suit one family's succession goals perfectly and be entirely unnecessary for another. The right answer depends on your assets, your family, your intentions, and your appetite for complexity.
Structures such as trusts and Family Investment Companies carry their own set-up and running costs, so they’re only worthwhile when the benefits clearly justify them.
Which of these is right for you – if any – depends entirely on your own circumstances, and each should only be considered as part of personalised advice.
How to reduce inheritance tax and protect your estate
For many wealthy families, inheritance tax represents one of the largest single risks to the wealth they’ve built. Left unaddressed, it can significantly reduce what passes to the next generation, and can force difficult decisions at a difficult time. Starting early tends to give more room to act.
Several approaches can help, often in combination – though each depends on your circumstances and qualifying conditions, and should be considered only with professional advice:
- Gifting strategies. These can reduce your taxable estate over time – provided you live for seven years after making a gift – while allowing you to support family when it matters most.
- Trust planning, to manage how and when wealth passes, and to whom.
- Business Relief, which may be available when you hold qualifying business assets – though eligibility rules can, and do, change.
- Life assurance, which can provide the funds to meet a tax bill without forcing the sale of treasured or hard-to-sell assets It’s often written in trust, to be effective for inheritance tax.
- Intergenerational wealth transfer, planned deliberately rather than left to chance.
The aim isn't to strip an estate of value, but to ensure that your wealth reaches the people you intend, smoothly and without complication.
How should wealth be owned? Personal, joint, trust, or corporate
Just as you'd diversify your investments, it's worth considering how ownership itself is arranged. The same asset can behave very differently depending on how it's held.
Broadly, wealth can be held:
- Personally, in your own name
- Jointly, with a spouse, partner, or family member
- In trust, for the benefit of others across generations
- Through a corporate structure, such as an investment or family company
Each of these can offer different outcomes for tax, succession, and asset protection. Spreading ownership thoughtfully – rather than defaulting everything to personal holding – can build real resilience into your wider position, though the right approach always depends on individual circumstances.
What is family governance and why does it matter?
This is the area most often overlooked, and frequently the one that decides whether wealth endures. Even the most elegant structure can falter if the family around it doesn't understand it, or isn't ready for it. Picture a family gathered around the kitchen table who have never actually discussed the trust that will one day shape their lives – the intention was sound, but the conversation never happened.
Strong family governance involves:
- Ensuring family members understand how the wealth is structured, and why
- Preparing the next generation to receive and steward wealth responsibly
- Documenting your wishes and succession plans clearly, so intentions are not lost or disputed
- Putting powers of attorney and contingency plans in place, so the family can act if you can’t
Governance isn't about control from beyond; it's about clarity, continuity, and confidence. Families who talk openly about wealth tend to protect it far better than those who leave it unspoken.
How your financial adviser can help
Finally, complex affairs are rarely served well by advice taken in isolation. Real value tends to emerge when the right professionals work together around a shared understanding of your goals – typically your wealth manager, tax adviser, solicitor, trustees and, where relevant, family office professionals. This is how we work with our clients.
Mistakes most often arise at the seams: when a tax decision is made without regard to the succession plan, or a trust is established without considering the investment strategy, or a business is sold without a thought about the inheritance tax bill it may create. A coordinated approach closes those gaps. It ensures each decision strengthens the whole, rather than solving one problem while quietly creating another.
Protecting wealth with complex tax affairs
You don't have to do everything at once. A few things, done well and revisited often – keeping your plan in step with your life, holding your wealth in a way that genuinely suits you, planning succession sooner rather than later, and making sure your advisers actually talk to each other – are what turn complexity from a worry into something you can manage with confidence.
The families who protect their wealth best aren't chasing the lowest tax bill – they plan well, structure their assets thoughtfully, and revisit that plan often.
If you'd like to talk through your own circumstances, and how well your current arrangements still fit them, your Rathbones adviser would be glad to help. Sometimes the most valuable step is simply to start the conversation.
