Equity and Trust – The Rule in Clayton’s Case


Case Scenario


Two separate trusts are managed by the same trustee, Daniel.


⸻


Trust A


Contains:
£100,000


⸻


Trust B


Contains:
£100,000


Daniel improperly mixes both trust funds into one bank account.


The transactions occur in the following order:


⸻


Step 1 – Trust A Money Deposited


Account balance:
£100,000


⸻


Step 2 – Trust B Money Deposited


Account balance:
£200,000


⸻


Step 3 – Daniel Withdraws Money


Daniel spends:
£100,000


on personal expenses, rent, and luxury holidays.


The remaining balance in the account is:


£100,000


The court must determine:

• which trust owns the remaining money;

• whether Trust A or Trust B bears the loss;

• and how mixed innocent-party funds should be allocated.

⸻


The Rule in Clayton’s Case


Definition


The rule in Clayton’s Case states:


“first in, first out.”


This means:


the money first paid into the account is treated as the first money withdrawn.


⸻


Devaynes v Noble


Lord Grant MR explained:


“the sum first paid in is the first drawn out.”


⸻


Application to the Scenario


Step 1


Trust A deposits:
£100,000


⸻


Step 2


Trust B deposits:
£100,000


⸻


Account Total


£200,000


⸻


Step 3 – Withdrawal


Daniel withdraws:
£100,000


⸻


Clayton Analysis


Under the first in first out rule:

• Trust A’s money entered first;

• therefore Trust A’s money is treated as withdrawn first.

⸻


Result


Trust A


❌ loses entire £100,000.


⸻


Trust B


✅ retains the remaining £100,000.


⸻


Why This Is Problematic


The rule may produce harsh or arbitrary outcomes.


Trust A bears the entire loss simply because its money entered the account first.


⸻


Practical Problem


Suppose Daniel later uses the remaining:


£100,000


to buy shares now worth:


£300,000


Under Clayton:

• Trust B alone would benefit from tracing into the profitable investment;

• Trust A receives nothing.

⸻


Criticism of Clayton’s Rule


The rule is often criticised because:

• it can produce unfair results;

• it operates mechanically;

• it may ignore the intentions of the parties;

• it may favour later contributors unfairly.

⸻


Rule of Convenience


Modern courts regard Clayton as:


a rule of convenience rather than an absolute rule.


It may therefore be displaced where inappropriate.


⸻


Pro Rata Distribution


Alternative Approach


Instead of applying first in first out, courts may divide remaining funds proportionately.


This is called:


pro rata distribution.


⸻


Example Using Pro Rata Allocation


Total Contributions


Trust A:
£100,000


Trust B:
£100,000


⸻


Total Mixed Fund


£200,000


⸻


Amount Remaining


£100,000


⸻


Proportional Allocation


Each trust contributed:


50%


Therefore each trust receives:


£50,000


⸻


Result


Trust A


Recovers:
£50,000


⸻


Trust B


Recovers:
£50,000


⸻


Why Courts Prefer Pro Rata Sometimes


Pro rata distribution may:

• produce fairer outcomes;

• reflect collective investment intentions;

• avoid arbitrary loss allocation.

⸻


Barlow Clowes International Ltd v Vaughan


Facts


Thousands of investors contributed funds into mixed accounts.


The investment scheme collapsed.


Insufficient money remained to repay everyone.


⸻


Decision


The court rejected strict application of Clayton because:

• it would be impractical;

• unfair;

• contrary to the collective nature of the scheme.

⸻


Result


The remaining funds were distributed:


✅ pro rata.


⸻


Example With Figures


Investor A


Contributed:
£40,000


⸻


Investor B


Contributed:
£60,000


⸻


Remaining Fund


£50,000


⸻


Proportional Recovery


Investor A receives:
£20,000


Investor B receives:
£30,000


⸻


Why?


Because contributions were allocated proportionately.


⸻


Further Cases Rejecting Clayton


National Crime Agency v Robb


The court applied:


✅ pro rata allocation


in a fraud and property investment scheme.


⸻


Russell-Cooke Trust Co v Prentis


Clayton was rejected because:

• first in first out analysis would be excessively complicated and expensive.

⸻


Case Applying Clayton


Commerzbank Aktiengesellschaft v IMB Morgan Plc


The court applied Clayton where:

• no sufficient reason existed to displace it.

⸻


Key Principle


Modern courts apply Clayton flexibly.


The rule may be displaced where:

• impractical;

• unfair;

• inconsistent with parties’ intentions;

• or contrary to justice.

⸻


Importance in Equity


Mixed fund cases involve balancing:

• fairness between innocent parties;

• proprietary rights;

• practical administration;

• commercial reality.

⸻


Key SQE Principles


Clayton Rule


First in, first out.


⸻


Pro Rata Rule


Proportional sharing between innocent contributors.


⸻


Modern Judicial Approach


Courts increasingly favour:


✅ fairness and practicality


over rigid mechanical application.


⸻


Conclusion


The rule in Clayton’s Case provides a traditional method for allocating losses where funds belonging to multiple innocent parties are mixed in a bank account. Under the first in first out principle, the earliest deposited funds are treated as withdrawn first. However, modern courts increasingly treat Clayton as a flexible rule of convenience rather than an absolute principle and may instead adopt pro rata distribution where this better reflects fairness, practicality, and the intentions of the parties involved.