The rule that decides everything: ABSD is worked on how many homes each buyer owns. A Singapore Citizen who owns none pays 0%, and one who owns one pays 20% on the second. Every route below either changes who owns what, or times a purchase and a sale. IRAS treats a genuine change of ownership differently from an arrangement made to avoid duty.
Decoupling a private home
Who can decouple. Private property: yes. HDB: no, except on divorce, death, financial hardship, renunciation of citizenship or medical grounds, and it has been blocked otherwise since April 2016. An executive condominium: only after its minimum occupation period, with the SSD clock running from the original purchase date.
What it costs. One spouse transfers their share to the other, so the remaining owner holds it alone and the spouse who left can buy as someone who owns nothing.
| Item | Typical |
|---|---|
| Buyer's Stamp Duty on the transferred share | The full residential scale: a $2.5M share is $94,600 |
| Legal fees | $5,000 to $6,500, with two separate firms required |
| CPF refund by the outgoing spouse | Principal plus accrued interest |
| Seller's Stamp Duty | The four-year schedule can apply, and can wipe out the saving |
| Loan | The remaining spouse must pass TDSR alone |
A citizen who owns only that one property pays no ABSD on taking the rest of it, but BSD is payable on the share, on the higher of price and market value.
Worked example. A $5.0M landed home, held jointly. The husband buys his wife's $2.5M share: BSD of about $94,600 plus legal fees of about $6,000, about $100,600. The wife then buys a $1.5M condominium in her sole name at 0% ABSD rather than 20%, which is $300,000. The saving is about $199,400, before financing costs and the effect of the CPF refund.
The 99-1 line
- Decoupling is a genuine part-sale at market value, with beneficial ownership matching legal title.
- A contrived 99-1 is a clean-profile buyer buying alone, then transferring 1% days later to a higher-ABSD party. IRAS treats that as tax avoidance under section 33A of the Stamp Duties Act.
What IRAS has done about it:
- 187 cases reviewed by April 2024; 166 found to be tax avoidance; about $60 million recovered.
- A 50% surcharge on the additional duty, with penalties of up to four times the duty if unpaid. There is no time limit on stamp duty audits.
- February 2025: the first criminal prosecution, of a mother and son, over about $200,000 in ABSD and surcharges. It ended in jail terms and criminal records.
- IRAS's whistleblower reward is 15% of the tax recovered, up to $100,000.
- Wong Mei Lee Millie v Ngor Shing Rong Jake [2026] SGCA 27: the Court of Appeal confirmed that courts may refuse to recognise hidden beneficial ownership where it supports an ABSD-avoidance arrangement.
Selling one HDB flat and buying two private homes
How it works. A couple sells their jointly owned HDB flat. Each spouse then buys separately, in sole name. Each counts as a first property, so each pays 0% ABSD and can borrow up to 75% LTV.
What it needs.
- Each spouse passes TDSR on their own. Income is not pooled, which rules the route out for most single-earner households.
- The CPF refund from the HDB sale, principal plus accrued interest, goes back to each Ordinary Account, not to cash.
- Two sets of 5% cash, two Buyer's Stamp Duty bills and two sets of legal fees.
- Only one spouse's CPF Ordinary Account can fund each property.
- Vacancy, interest-rate and rental-yield risk on the property that is let out.
- Sole ownership means sole legal title.
A 2026 caution. MAS has publicly cautioned against overextending through this route. With non-landed private prices softening in the Outside Central and Rest of Central regions and about 61,000 completions ahead, the rental income assumed for the second home is the least certain figure in the plan.
Upgrading: four ways to sequence it
| Path | ABSD | Trade-off |
|---|---|---|
| Sell first, then buy | 0% | The cleanest route, but you need somewhere to live in between. |
| Buy first, then sell | 20% paid up front, refunded if the first home is sold within 6 months | You carry the ABSD, for example $300,000, for 6 to 12 months. |
| One name on the HDB flat | The spouse who is not on it buys a condominium as a first-timer, at 0% | The essential occupier must still serve the minimum occupation period. |
| Executive condominium | None up front | The HDB flat must be sold within 6 months of the EC's TOP. Income ceiling $16,000 a month, or $18,000 for sites tendered from 24 August 2026. |
The ABSD refund for a married couple
A married couple buying a second home jointly can have the ABSD refunded by selling the first home:
- within 6 months of buying the second home (a completed resale), or
- within 6 months of its TOP or CSC, whichever is earlier (a new launch).
Refunds are applied for within 6 months of the sale, and are paid about 6 weeks after stamping. The couple must be Singapore Citizen with Singapore Citizen or PR, married when they bought, holding the second property in both names only, with no other property acquired since. IRAS does not extend the 6-month period.
The duties themselves are set out in what it costs to buy and sell, and the HDB rules in Buying an HDB flat.