There is a specific wealth band where the structural gap is largest and the round-robin is most likely to happen. It sits between £2m and £10m in business and personal wealth. The people in this range are not too small for the architecture. They are exactly who the architecture was designed for. But they are also the people most likely to have been through the round-robin and come out the other side with something that does part of the job — and not know it.
What the round-robin looks like
It starts with the accountant. The business is growing. The owner raises the question of structure. The accountant recommends a holding company. The holding company is set up. The accountant files the returns. The question of what sits above the holding company — the constitutional layer, the succession instrument, the share class design — is never asked, because nobody in that conversation was ever hired to ask it.
A year later, the owner raises it again. The accountant refers them to a solicitor. The solicitor recommends a trust. The trust is drafted. The question of how the trust connects to the holding company, how it governs succession, how it protects the assets from the next generation's creditors — is never asked, because the solicitor was asked to draft a trust, not to design an architecture.
A year after that, the owner raises it with their IFA. The IFA recommends a family investment company. The FIC is set up. The question of what happens when the FIC grows beyond the BPR threshold, what happens if there is a divorce in the next generation, what happens when the owner is not in the room — is never asked, because the IFA was asked to manage the investment, not to design the system above it.
This is not a failure of any individual adviser. It is a structural gap in the way financial advice is organised. Each professional does their job correctly. Nobody was hired to connect the layers.
Why this band is the most exposed
Below £2m, the architecture is often not yet necessary. The wealth is still concentrated in the trading business. The priority is growth, not protection. The instruments that matter most — the holding company, the basic succession plan — are either in place or straightforward to install.
Above £10m, the wealth is usually complex enough that the owner has been forced to engage specialist advisers. The complexity of the situation has made the gap visible. The round-robin has either already happened and been resolved, or the owner has enough exposure to have found the right people independently.
Between £2m and £10m, the wealth is large enough that the gap is expensive, but not so large that the complexity forces resolution. The owner has good advisers. The advisers are doing their jobs. The gap is invisible because nobody has ever been asked to look for it.
This is the Dunning-Kruger effect playing out in financial architecture. The owner knows enough to sense something is off. They do not know enough to know what it is. Every adviser they ask gives them a partial answer. The partial answers accumulate. The gap remains.
What the FIC does and what it misses
The family investment company is the most common instrument offered to business owners in this wealth band. It is a genuine instrument with genuine uses. It allows the next generation to participate in the economic growth of the family's assets while the parents retain voting control. It is a sensible first step for succession planning.
But it has two limitations that are rarely explained at the point of sale.
First, the FIC has two share classes: voting shares held by the parents, non-voting shares held by the children. That is the instrument. It is not an architecture. The question of what happens when the FIC grows beyond the £2.5m Business Property Relief threshold — when the assets inside it are no longer fully sheltered from IHT — is not answered by the instrument. It requires a strategy.
Second, the FIC does not freeze the estate. The existing value of the assets contributed to the FIC still sits inside the estate of the person who contributed them. The IHT exposure on the contributed assets is unchanged. The FIC only prevents future growth from accumulating inside the estate of the original owner — and only if the structure is designed correctly.
Having a FIC and having the right structure are two different things. The gap between them is where most of the value in this wealth band lives.
What the architecture actually addresses
The three-layer architecture — trading entity, capital layer, constitutional layer — is designed to answer the questions the FIC cannot. What happens if the portfolio grows beyond the BPR threshold? What happens if there is a divorce in the next generation? What happens if the owner dies unexpectedly before the succession plan is complete?
The constitutional layer is the piece that is almost always missing. It is the shareholder agreements, the bespoke articles of association, the governance documents that determine what happens when something unexpected occurs. It is not a product. It is not an instrument. It is the strategy that holds the instruments together.
The estate freeze technique, built into the capital layer, locks the value of the assets at today's figure. All future growth — every pound of appreciation, every reinvested profit, every new asset acquired after the structure is in place — sits outside the estate from the moment the structure is installed. The IHT on that growth never materialises.
The cost of the lull
Consider a business owner with £5m in combined business and personal wealth, growing at 8% per year. They are 48 years old. They have a holding company and a trust. They believe they are structured.
Without the architecture, in 15 years the estate is worth approximately £15.9m. The IHT liability on death is approximately £6.1m (assuming nil-rate bands of £650,000 for a couple).
With the architecture in place today, the existing £5m value remains in the estate. The future growth — approximately £10.9m — sits outside it. The IHT liability on death is approximately £1.74m (on the frozen £5m value less nil-rate bands).
The difference is approximately £4.36m. That is the cost of the lull.
The qualifying period for IHT ring-fencing begins the day the structure is in place. Not the day you decide to act. Every month of the lull is a month of growth that accumulates inside the estate instead of outside it.
The audit shows you where you are
The structure audit maps your current position across three dimensions: your income tax position, your IHT exposure, and the architecture that addresses the gap. It calculates your specific numbers — your wealth, your growth rate, your timeline, your family situation. The output is a precise picture of what your current structure is costing you and what the architecture changes.
It takes two minutes. It requires no commitment. If the numbers suggest a conversation is worth having, we will say so. If they do not, we will say that too.
The lull is not permanent. But it is expensive. The audit shows you the number.