Disadvantages of Will Trusts: When They Work and When They Don’t

• A Will Trust does not legally exist until death
• Multiple Will Trusts are often aggregated for tax purposes
• Periodic trust charges can apply every 10 years at up to 6%
• Larger estates may face decades of repeated tax charges

Lifetime Trusts allow earlier certainty, flexibility, and protection

Will Trusts are commonly included in Wills to:

• Protect assets for minor children
• Provide for a disabled or vulnerable beneficiary
• Allow a spouse to occupy a property while preserving capital for children
• Prevent beneficiaries from receiving large sums too early
• Appoint professional trustees where family members are unsuitable

In these situations, a standard Will is often insufficient.

A Trust only comes into existence once assets are settled into it.

With a Will Trust:

• No settlement occurs during lifetime
• The Trust is created only on death
• All assets passing into trust do so at the same time

This timing has important tax consequences.

Where multiple Trusts are created under a single Will:

• HMRC generally aggregates them for inheritance tax
• The combined value is tested against one Nil Rate Band (£325,000)

If the total value exceeds this threshold, the Trust becomes subject to periodic charges.

Relevant Property Trusts are assessed every 10 years.

• Charge: up to 6%
• Applies to value above the Nil Rate Band
• Repeats at every 10-year anniversary

For large estates, this can mean:

• Multiple charges
• Over several decades
• Across children and grandchildren

This is often unintended and poorly understood.

Will Trusts can be effective for modest estates.

For estates exceeding £1 million, they can:

• Lock families into long-term tax exposure
• Reduce flexibility for individual beneficiaries
• Increase administrative and compliance burdens

Crucially, all planning happens too late – after death.

A Lifetime Trust is:

• Created during your lifetime
• Settled immediately (even with a nominal amount)
• Registered and recognised by HMRC from inception

This changes the planning dynamics entirely.

• Trusts can be created on different days, each with its own tax position
• Separate Trusts can be established for each child
• Costs and tax consequences are known upfront
• Greater flexibility for beneficiaries
• Reduced risk of future legislative change applying retrospectively

Lifetime Trusts can also be used to:

• Advance funds for property purchases
• Structure support as loans, not gifts
• Protect family wealth from divorce or creditor risk

This allows help without loss of control.

People assume Will Trusts are simpler and safer because they are written into the Will. In reality, they are often the least efficient structure for high-value estates because everything happens at once – too late to manage tax properly.

Before relying on a Will Trust, consider:

• Total estate value now and projected
• Number of intended beneficiaries
• Whether flexibility between beneficiaries matters
• Exposure to 10-year trust charges
• Desire for certainty during lifetime
• Risk of future legislative changes

If several apply, a Lifetime Trust strategy should be reviewed.

• Assuming multiple Will Trusts mean multiple Nil Rate Bands
• Using Will Trusts as a substitute for lifetime planning
• Ignoring long-term periodic charge exposure
• Mixing advisers without coordinated drafting
• Treating trusts as “set and forget” structures

Will Trusts remain useful and appropriate in many family situations. However, for higher-value estates, they often introduce avoidable tax inefficiencies and long-term complexity.

Lifetime Trust planning allows:

• Earlier certainty
• Better tax control
• Greater flexibility for future generations

Experienced, coordinated advice is essential to determine the right structure.

Disclaimer. The information in this article is general in nature and does not constitute personal financial, tax, or legal advice. UK tax legislation changes frequently, and the specific application of any rule or strategy depends on individual circumstances. Figures, thresholds, and reliefs mentioned are correct as of the 2026 to 2027 tax year unless otherwise stated. Before acting on any information here, consult a qualified adviser who has reviewed your full situation. Bluebond Tax Planning provides personal recommendations only under a signed client agreement, following a full review. Bluebond Tax Planning operates under UK legal frameworks and recognised professional conduct standards. Tax planning and legal work are not FCA regulated.