Decoupling stamp duty
Buying out a co-owner’s share of the home, often called decoupling? Estimate the Buyer’s and Additional Buyer’s Stamp Duty on the share.
BSD plus any ABSD after the IRAS remission for acquiring more of a home you already part-own.
How this estimate works
Duty is charged on the higher of the price paid and the market value of the share acquired. BSD uses the standard residential rates. For ABSD, IRAS’s examples and the remission for acquiring an additional interest in a property you already part-own give: Singapore Citizens who own only this home pay no ABSD; with 2 homes 20% (30% less 10%); with 3 or more 30%. Permanent Residents with 1 home pay 5% (30% less 25%); with 2 homes 30% (35% less 5%); with 3 or more 35%. Foreigners pay 60% and entities 65%.
The remission has conditions: the share is in a single residential property you already have an interest in, the property is not held on trust or as partnership property, and any joint buyers have a lower ABSD rate. Decoupling also has legal, CPF and loan steps; your conveyancing lawyer confirms the duty.
Official references: IRAS ABSD, IRAS remission for additional interest, IRAS BSD. Rules checked 3 November 2026.
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