Additional Conveyance Duties (ACD) Singapore

Last updated: September 2026

Additional Conveyance Duties (ACD) is a Singapore stamp duty charged on the acquisition or disposal of equity interests, such as shares or units, in a Property-Holding Entity (PHE), an entity where at least 50% of total tangible assets are residential property in Singapore, designed to prevent buyers from avoiding standard property stamp duties by purchasing the company instead of the property.

Not financial advice. All figures for educational reference only. Data as at September 2026.

Table of Contents

What Is Additional Conveyance Duties?

Before 2017, a buyer wanting exposure to a specific piece of Singapore residential property could, in some cases, sidestep the usual Buyer’s Stamp Duty (BSD) and Additional Buyer’s Stamp Duty (ABSD) that apply to a direct property purchase by instead buying shares in the company that owned the property. Since share transfers historically attracted only a much lower 0.2% stamp duty, this structuring route offered a meaningful tax saving compared to a direct property acquisition, particularly for larger transactions or for foreign buyers who would otherwise face steep ABSD rates.

Additional Conveyance Duties (ACD), introduced on 11 March 2017, closed this gap by imposing an extra duty on transfers of equity interests in what the law defines as a Property-Holding Entity (PHE): broadly, an entity where at least 50% of total tangible assets consist of prescribed immovable property in Singapore that is largely residential in nature. The effect is that acquiring a controlling or substantial stake in a PHE now triggers duties calculated in a manner closely mirroring what would apply had the buyer purchased the underlying property directly.

ACD sits alongside other Singapore property structuring safeguards, including the ABSD 99-to-1 co-ownership crackdown and the Qualifying Certificate regime for foreign-linked developers, all of which reflect a broader regulatory pattern of closing structuring routes that would otherwise let buyers minimise property-related stamp duties through creative corporate or ownership arrangements.

How It Works in Singapore

ACD applies to both the buyer’s side, an Additional Buyer’s Conveyance Duty broadly mirroring BSD and ABSD, and the seller’s side, an Additional Seller’s Conveyance Duty mirroring Seller’s Stamp Duty (SSD), when equity interests in a PHE change hands. For the seller’s side specifically, the current rules distinguish based on when the equity interest was originally acquired: for equity acquired between 11 March 2017 and 3 July 2025, the Additional Seller’s Conveyance Duty is a flat 12% if disposed of within 3 years of acquisition; for equity acquired on or after 4 July 2025, the rate rises to a flat 16% if disposed of within a longer 4-year holding period.

Critically, ACD is not calculated on the share price paid in the transaction. It is calculated on the prevailing market value of the PHE’s underlying residential property at the time of the equity transfer, then pro-rated according to the percentage of beneficial interest in the PHE that changed hands. This means the duty tracks the real estate’s value directly, closing off any attempt to minimise the tax base by pricing the share transaction below the property’s true worth.

ACD is payable in addition to, not instead of, the standard stamp duty already applicable to share transfers generally, which is 0.2% of the higher of the consideration paid or the shares’ net asset value. In 2025, the regime was further extended to capture equity interests in PHEs that are transferred into living trusts, closing another structuring avenue that had emerged as estate and wealth planning trusts became more commonly used alongside direct property holdings.

Worked Example

Suppose an investor acquires a 100% stake in a private company whose sole asset is a Singapore residential property currently valued at S$10 million, with the equity itself changing hands for S$9.5 million (reflecting some company-level liabilities). If this investor later disposes of that full stake within 3 years of a 2024 acquisition, the Additional Seller’s Conveyance Duty is calculated as 12% of the property’s prevailing market value at the time of disposal, pro-rated to the 100% interest transferred, potentially over S$1.2 million if the property’s value has since risen, plus the standard 0.2% share transfer stamp duty on top.

Now suppose the same investor had instead acquired only a 40% stake in that PHE. On disposal within the applicable holding period, ACD would be calculated on 40% of the property’s prevailing market value, since the duty is pro-rated strictly to the percentage of beneficial interest actually transferred, not the full property value.

If that same 40% stake had been acquired on or after 4 July 2025 instead, the applicable Seller’s rate would rise to 16% (if disposed of within the new 4-year window), reflecting the rate increase introduced for equity acquired from that date onward.

Advantages

• Closes a real historical loophole. ACD ensures that structuring a property purchase through a company shell no longer meaningfully reduces the stamp duty payable compared to a direct purchase.
• Levels the playing field between direct and indirect property acquisition. Investors can no longer gain a material tax advantage purely by choosing a corporate holding structure over direct ownership.
• Transparent, published rate structure. IRAS publishes clear ACD rate tables and worked calculation guidance, reducing ambiguity for conveyancing lawyers and corporate transaction advisers.
• Extended to trusts in 2025, closing a newer gap. The 2025 amendment addressing living trust transfers shows the regime continuing to adapt as new structuring patterns emerge.

Risks and Limitations

• Easy to overlook in corporate M&A due diligence. Buyers acquiring a company for reasons unrelated to its property holdings can be caught off guard by a substantial, unexpected ACD liability if that company happens to qualify as a PHE.
• Valuation disputes. Because ACD is based on the property’s prevailing market value rather than the transaction price, disagreements can arise over the correct valuation basis used for the duty calculation.
• Compounds with standard share stamp duty. ACD is additive, not a replacement, so total stamp costs on a PHE share transfer can be substantially higher than either a standard share transfer or a standalone property purchase in isolation.
• Rate increase for newer holdings. The July 2025 rate rise to 16%, coupled with a longer 4-year holding period, increases the cost and duration of exposure for anyone acquiring PHE equity going forward.
• Complexity in determining PHE status. The 50% tangible asset threshold requires careful accounting analysis, and an entity’s PHE status can change over time as its asset composition shifts.

Additional Conveyance Duties vs Standard Share Stamp Duty

The Bottom Line

For Singapore investors and corporate dealmakers, Additional Conveyance Duties are the reminder that buying the company instead of the property no longer meaningfully reduces stamp duty exposure once that company qualifies as a Property-Holding Entity. Anyone acquiring or disposing of equity in a business with substantial Singapore residential property holdings should factor ACD into deal economics from the outset, not discover it as a surprise during closing.

Related Terms:

• Additional Buyer’s Stamp Duty (ABSD) Singapore
• ABSD 99-to-1 Trust Loophole Singapore
• Stamp Duty on Shares Singapore

Frequently Asked Questions