How does property decoupling work in Singapore?
Decoupling means one co-owner transfers their share of a property to the other, so only one name remains on it. This frees the exiting owner to buy another home as a "first" purchase, avoiding Additional Buyer's Stamp Duty. The buying-out owner pays Buyer's Stamp Duty on the transferred share, and Seller's Stamp Duty may apply if sold within four years.
The full rules
What decoupling involves
Decoupling is when two co-owners restructure ownership so that one person buys out the other's share. The person who exits no longer owns the property and may then purchase a separate home.
Costs that apply when decoupling
| Cost | Who pays | Based on |
| Buyer's Stamp Duty (BSD) | The owner buying the share | Value of the share transferred |
| Seller's Stamp Duty (SSD) | The owner selling the share | Applies if the property was held under 4 years |
| Additional Buyer's Stamp Duty (ABSD) | May apply | Depends on how many properties the buying party already owns |
Buyer's Stamp Duty rates
| Portion of price or value | Rate |
| First $180,000 | 1% |
| Next $180,000 (up to $360,000) | 2% |
| Next $640,000 (up to $1,000,000) | 3% |
| Next $500,000 (up to $1,500,000) | 4% |
| Next $1,500,000 (up to $3,000,000) | 5% |
| Above $3,000,000 | 6% |
Seller's Stamp Duty (for property bought on/after 4 Jul 2025)
| Held for | Rate |
| Up to 1 year | 16% |
| Over 1 to 2 years | 12% |
| Over 2 to 3 years | 8% |
| Over 3 to 4 years | 4% |
| More than 4 years | 0% |
Why owners decouple
Once one owner is fully out of a property, buying another home can count as their first purchase. For a Singapore citizen, ABSD on a first residential property is 0%, compared with 20% on a second.
> Decoupling rules for HDB flats differ from private property. Confirm your eligibility directly with HDB before proceeding.
Worked example
Worked example
A married couple jointly own a private condominium worth $2,000,000 in equal shares. The husband wants to buy out the wife's half so she can purchase a new home in her own name.
Value of the share transferred: 50% × $2,000,000 = $1,000,000
Buyer's Stamp Duty the husband pays on the $1,000,000 share:
| Band | Calculation | Duty |
| First $180,000 | 1% | $1,800 |
| Next $180,000 | 2% | $3,600 |
| Next $640,000 | 3% | $19,200 |
| Total BSD | $24,600 |
Seller's Stamp Duty: If the couple bought the condo more than 4 years ago, no SSD applies. If bought within the last year, the wife's transferred share could attract 16% SSD.
ABSD: As the husband already owns this property, he pays no further ABSD on consolidating it. The wife, now owning no property, can buy a first home with 0% ABSD as a citizen.
What this means for you
Which situation fits you?
Married couple planning a second property
If one spouse transfers their share to the other, the exiting spouse can buy a new home as a first purchase, with 0% ABSD for a citizen instead of 20% on a second property. Weigh this against the BSD payable on the transferred share.
Recently purchased the property
If you bought within the last four years, Seller's Stamp Duty applies on the transferred share — up to 16% in the first year. Decoupling may be costly until the holding period passes.
HDB flat owners
Decoupling of HDB flats follows different rules from private property. Check directly with HDB whether your flat qualifies before making any plans.
Related questions
Does decoupling help avoid ABSD?
It can. Once one owner fully exits a property, their next purchase may count as a first home. For a Singapore citizen, ABSD on a first residential property is 0%, versus 20% on a second.
Who pays stamp duty when decoupling?
The owner buying the share pays Buyer's Stamp Duty on the value of that share. The owner selling may pay Seller's Stamp Duty if the property was held for less than four years.
Will Seller's Stamp Duty apply?
Only if the property was bought within the last four years. For properties bought on or after 4 Jul 2025, rates are 16% in year one, 12% in year two, 8% in year three and 4% in year four.
Can I decouple an HDB flat?
HDB flats follow different rules from private property. Confirm your eligibility directly with HDB before planning any transfer.
How is BSD on the transferred share calculated?
It is based on the value of the share being transferred, using the same tiered rates as any purchase — from 1% on the first $180,000 up to 6% above $3,000,000.
More answers: Can a foreigner buy a condo in Singapore? · Can a PR buy a condo in Singapore? · Can a PR buy a resale HDB flat? · Can I buy a condo while owning an HDB flat?
Sources: IRAS — Additional Buyer's Stamp Duty · IRAS — Buyer's Stamp Duty · IRAS — Seller's Stamp Duty · Last verified 2026-10-19