SSAS Arms-Length Rules: What They Mean in Practice

Understanding SSAS Arms-Length Rules

When a SSAS enters into any transaction with a connected party — such as purchasing property from the sponsoring employer or leasing premises back to the company — HMRC requires the deal to be conducted on arm's length terms. This requirement is perhaps the single most important compliance principle for SSAS trustees to understand.

But what does "arm's length" actually mean in the context of SSAS property transactions? And how do you demonstrate compliance to HMRC's satisfaction? This guide provides a practical breakdown.

The Legal Definition of Arm's Length

In the context of tax law and pension regulation, an arm's length transaction is one that is conducted as if the parties had no prior relationship — as if they were entirely independent commercial parties negotiating freely in the open market. The price, terms, and conduct of the transaction should reflect what two unrelated, commercially motivated parties would agree.

For SSAS connected party transactions, the arm's length principle applies to:

• The purchase price when a SSAS buys property from the sponsoring employer
• The rent level when a SSAS leases property to the sponsoring employer
• The interest rate when a SSAS makes a loanback to the sponsoring employer
• The terms of any other commercial arrangement between the scheme and a connected party

Why the Arm's Length Rule Exists

Pension schemes receive substantial tax advantages — income tax relief on contributions, tax-free growth, and (historically) tax-free lump sums at retirement. In return, HMRC requires that pension funds are managed genuinely for retirement savings, not as vehicles to provide current benefits to members and their associates.

Without the arm's length requirement, a business owner could, for example, sell a property to their SSAS at an inflated price (extracting value from the pension tax-free), or pay below-market rent (effectively receiving a subsidy from the pension fund). The arm's length rule prevents both of these outcomes.

"The arm's length rules are not designed to make connected party transactions difficult — they are designed to make them genuine. If you approach them with that mindset, compliance is straightforward." — Matt Lenzie, Former Banker & Corporate Finance Partner

How HMRC Assesses Arm's Length

HMRC does not monitor SSAS transactions in real time, but scheme administrators must report to HMRC and the scheme must submit annual returns. HMRC can and does investigate schemes where it suspects non-compliant transactions.

When assessing whether a transaction was arm's length, HMRC will look at:

Independent Valuation Evidence

The most important piece of evidence is an independent professional valuation. For property transactions, this means a RICS-qualified valuer providing a red book valuation of the capital value and a separate market rent assessment. HMRC expects this valuation to have been obtained before the transaction was agreed, not retrospectively.

Comparison with Market Transactions

HMRC may compare the terms of the connected party transaction with similar transactions in the open market. If your SSAS is paying substantially above or below market rent for a property, that discrepancy needs to be explained by genuine commercial factors, not simply the relationship between the parties.

Conduct Throughout the Transaction

Arm's length conduct is not a one-time test — it applies throughout the life of the arrangement. If the sponsoring employer falls into rent arrears and the SSAS trustees do not pursue enforcement action, that is evidence that the arrangement is not being conducted at arm's length. Similarly, if rent reviews are skipped or ignored, HMRC may question whether the original arm's length terms have been maintained.

Demonstrating Arm's Length Compliance

Good practice for demonstrating arm's length compliance includes:

Before the Transaction

• Obtain a full RICS red book valuation of the property
• Obtain a separate market rent assessment from an independent surveyor
• Ensure the trustee decision is documented, including consideration of the valuation evidence
• Use solicitors to draft the lease and acquisition documentation

During the Transaction

• Complete the transaction at the independently assessed price and rent
• Ensure all documentation is signed by all relevant parties in their correct capacities
• Register the lease at HM Land Registry where appropriate

Ongoing Management

• Implement rent review clauses and action them at the correct dates
• Monitor rent payment and enforce promptly if arrears arise
• Keep records of all trustee decisions relating to the connected party arrangement
• Commission fresh valuations when renewing or varying the lease

The Consequences of Non-Compliance

If HMRC determines that a connected party transaction was not arm's length, the consequences can be severe. Non-compliant transactions may be treated as unauthorised payments — which attract a tax charge of 40% on the amount of the payment, plus a 15% surcharge in serious cases. The scheme itself may also face a scheme sanction charge.

For more on the specific risks, see our guide to SSAS connected party pitfalls and our overview of SSAS connected party HMRC rules.

Common Misconceptions

"We can agree a discounted rent because we are related"

No. Any discount on market rent is an unauthorised benefit to the occupying company. The rent must reflect market value regardless of the relationship between the landlord (SSAS) and tenant (company).

"We can set the rent ourselves without a valuation"

This is technically possible but highly risky. Without an independent valuation, you have no evidence that the rent is market rate, and HMRC is unlikely to take your word for it. Always obtain a professional valuation.

"Once the lease is signed, we do not need to worry about arm's length anymore"

The arm's length obligation continues throughout the life of the arrangement. Rent reviews must be implemented, arrears must be pursued, and any changes to the lease terms must be on commercial terms.

Special Considerations for Multi-Member SSAS

Where a SSAS has multiple members (common in family businesses or partnership structures), the arm's length requirement applies equally. Even if only one member's company is the tenant, the transaction must be arm's length relative to all members — the SSAS cannot enter into a deal that benefits one member's company at the expense of the overall scheme.

Key Takeaways

• Arm's length means transacting as if the parties were entirely independent commercial parties
• HMRC requires independent valuations to support arm's length pricing
• The obligation is ongoing — conduct throughout the transaction must remain commercial
• Non-compliance can trigger unauthorised payment charges of 40% or more
• Proper documentation of trustee decisions is essential evidence of compliance

Need Guidance on SSAS Arm's Length Compliance?

Our team can help you structure your SSAS connected party transaction to meet HMRC's arm's length requirements from day one.

Get in touch to speak with a specialist, or read our related guide on SSAS independent valuations for connected party transactions.