A high-profile lawsuit involving Huttons Asia, a property agent and a conveyancing law firm has reignited debate over Singapore’s controversial “99-1” property ownership structure. The case centres on a condominium purchased by a foreigner and a Singaporean student, where the ownership was allegedly arranged in two stages — a move that later triggered tax enforcement action.

The dispute raises an important question for property buyers: Is a 99-1 arrangement legal, or does it amount to stamp duty avoidance?

This commentary breaks down what the 99-1 structure is, why it is used, why enforcement happens, and what buyers should understand before considering such arrangements. (This article is for informational purposes only and does not constitute legal advice.)

What Is a 99-1 Property Ownership Structure?

In Singapore, “99-1” refers to an ownership split where one buyer holds 99% of a property and another holds 1%.

On paper, unequal ownership is perfectly legitimate. Co-owners are allowed to hold different shares for various reasons — financial contribution differences, estate planning, risk management or succession purposes.

However, controversy arises when the 99-1 structure is executed in two steps:

1. Step One: The party with the more favourable stamp duty profile (for example, a Singapore citizen buying their first property) purchases 100% of the property.

2. Step Two: Shortly after completion, a small share (often 1%) is transferred to the second party — frequently a foreigner or someone who would otherwise incur higher Additional Buyer’s Stamp Duty (ABSD).

The perceived benefit? The second party may only pay ABSD on the 1% share rather than the full property value.

Why Buyers Consider This Arrangement

Singapore’s ABSD framework is intentionally strict. It is designed to cool property speculation and prioritise housing access for citizens.

Foreign buyers, in particular, face significantly higher ABSD rates compared to Singapore citizens purchasing their first property. The tax can amount to hundreds of thousands — or even millions — of dollars depending on property value.

Given such large sums, some buyers look for structural methods to reduce exposure. The 99-1 method gained traction years ago when buyers believed that splitting ownership in stages could legally minimise stamp duty liability.

In theory, if two transactions are separate and compliant individually, some assumed the structure would be safe.

But tax law does not only examine form — it also examines intent.

Why Enforcement Happens

Singapore’s Inland Revenue Authority of Singapore (IRAS) has powers under Section 33A of the Stamp Duties Act to disregard arrangements that are primarily designed to avoid tax.

This means even if each step appears legally valid on its own, authorities can look at the overall purpose of the transaction.

If IRAS determines that:

• The steps were pre-planned,

• The small share transfer occurred shortly after completion,

• The arrangement’s main purpose was reducing ABSD,

it may treat the deal as a single joint purchase from the start.

When that happens, the authorities can:

• Reassess ABSD based on full ownership,

• Impose backdated tax,

• Add a 50% surcharge penalty.

In several publicised cases, significant clawbacks have occurred. That enforcement backdrop explains why lawsuits sometimes follow — buyers who face large tax bills may seek to recover losses from professionals involved in the transaction.

What Is the Legal Issue in This Case?

The current lawsuit reportedly involves a foreigner and a Singaporean student who purchased a private condominium using a 99-1 structure. After enforcement action and penalties were allegedly imposed, the buyers sued the estate agency, the agent, and the law firm involved.

Such disputes typically revolve around questions like:

• Was the arrangement properly explained?

• Were risks of anti-avoidance provisions highlighted?

• Did the professionals recommend or facilitate the structure?

• Did the buyers understand the potential tax consequences?

Ultimately, these are matters for the courts to decide. Allegations in civil suits do not automatically mean wrongdoing — they reflect claims to be tested through legal proceedings.

Is a 99-1 Arrangement Illegal?

The answer is nuanced.

Not Automatically Illegal

There is nothing inherently unlawful about co-owning property in unequal shares. Many legitimate reasons exist for 99-1 ownership splits.

For example:

• One party contributes significantly more capital.

• Estate planning requires specific ownership ratios.

• Asset protection strategies are involved.

In such cases, unequal ownership alone does not breach the law.

Potentially Problematic If Tax-Driven

However, when the arrangement is structured primarily to reduce ABSD exposure — especially via staged transfers shortly after purchase — it may fall foul of anti-avoidance rules.

The legal issue hinges on intent and substance rather than the percentage split itself.

In simple terms:
If the structure exists mainly to save tax, enforcement risk increases significantly.

Why Timing Matters

One of the red flags authorities often examine is timing.

If a 1% transfer happens very shortly after completion, it may indicate the second step was always planned. That weakens any argument that the transfer was an independent or later decision.

In contrast, if ownership changes years later due to genuine life events — marriage, restructuring, inheritance planning — the circumstances are very different.

Context matters.

Why Professionals Are Being Sued

When enforcement leads to large financial consequences, affected buyers sometimes pursue negligence or misrepresentation claims.

They may argue that:

• They relied on advice from property agents.

• They were assured the structure was compliant.

• They were not informed of anti-avoidance risks.

• They believed the arrangement was common practice and acceptable.

Whether such claims succeed depends on evidence — written communications, documentation, and whether independent legal or tax advice was properly provided.

Broader Implications for Singapore’s Property Market

This lawsuit is not just about one transaction. It signals a broader regulatory stance:

Singapore takes stamp duty enforcement seriously.

The government has repeatedly stated that cooling measures are meant to maintain housing stability and fairness. Attempts to engineer around them are scrutinised closely.

For investors and buyers, the takeaway is clear:

Creative structuring does not override anti-avoidance laws.

Key Lessons for Property Buyers

1. Do not rely solely on informal advice.
   Always seek independent legal and tax counsel before implementing ownership structures.

2. Understand anti-avoidance provisions.
   Laws are drafted to address schemes designed primarily for tax reduction.

3. Document genuine commercial reasons.
   If unequal ownership is legitimate, ensure the rationale is clear and defensible.

4. Be cautious of “too good to be true” strategies.
   If the savings appear significant and effortless, regulatory risk may follow.

Pinery Residences

Final Thoughts

The lawsuit involving Huttons Asia, a property agent and a law firm over a 99-1 condo purchase underscores a critical reality in Singapore real estate: compliance is not just about following steps mechanically — it is about the substance behind them.

While unequal ownership structures can be lawful, using staged transfers primarily to reduce ABSD can trigger serious consequences under Singapore’s stamp duty framework.

For buyers navigating today’s high-stakes property environment, prudence, transparency and professional advice are essential safeguards.

(This commentary is intended for informational purposes only and does not constitute legal advice. Buyers should consult qualified legal and tax professionals for specific guidance.)