How BSD, ABSD and SSD stack together

By Winfred Quek · CEA R073319H · Published 1 September 2026

Rates and thresholds change. The current figures are kept in one place: the Singapore property rules reference.

Facts verified against the sources linked throughout this guide.

Buyers often talk about stamp duty as if it were one number. It is not, it is three separate duties, each with its own trigger, its own formula, and its own point on the timeline of owning a property. This guide is a companion to the BSD calculator and ABSD calculator, it lays the three out side by side so the relationship between them, not just each one in isolation, is clear.

Three duties, one timeline

The clearest way to see how the three relate is to place them where they actually sit in a property's life, rather than treating them as three versions of the same tax.

Notice the shape of this table. BSD and ABSD sit at the same point in time, the purchase, both due within 14 days of exercising the Option to Purchase. SSD sits at a completely different point, a future sale, and for many owners who hold long term, it never applies at all. Treating all three as a single upfront cost is the most common way buyers misjudge what a purchase actually requires in cash.

BSD: the one everyone pays

Buyer's Stamp Duty applies to every buyer of Singapore property, with no exemption based on citizenship or how many properties you already hold. It is calculated progressively, meaning each tier of the price is taxed at its own rate, not the whole amount at a single rate.

On a $1.5 million purchase, that works out to $1,800 plus $3,600 plus $19,200 plus $20,000, a total of $44,600. BSD is assessed on the higher of the purchase price or IRAS's market value assessment, so a related party transaction priced below market does not reduce the duty owed. It is due within 14 days of signing the Sale and Purchase Agreement or exercising the Option to Purchase, whichever is earlier, and it is not refundable on a completed transaction.

ABSD: the conditional layer

Additional Buyer's Stamp Duty sits on top of BSD, and unlike BSD it is not universal, it depends entirely on who you are and how many residential properties you already own. It is also calculated differently, a single flat rate on the entire purchase price, with no tiering at all.

The property count behind this table is worldwide, not just Singapore, and it includes partial interests of 1% or more, properties held on trust, and any HDB flat you still own. Nationals of the United States, Switzerland, Norway, Iceland and Liechtenstein are treated at the Singapore Citizen rate under free trade agreements, provided the purchase is made in a personal name.

One remission exists that many married couples use: a Singapore Citizen married couple buying a replacement matrimonial home can claim a full ABSD refund, provided both spouses are on the new title, neither owns another property at the time of purchase, and the existing matrimonial home is sold within 6 months of the new property's purchase date, or within 6 months of Temporary Occupation Permit or Certificate of Statutory Completion for an uncompleted property, whichever comes earlier. That 6 month window is strictly enforced.

SSD: the exit side duty

Seller's Stamp Duty is the one duty on this page that a buyer does not encounter at all on the day they buy. It only comes into play if and when the property is later sold, and only if that sale happens within a defined holding period, measured from the date the original purchase's Option to Purchase was exercised, or the Sale and Purchase Agreement was signed, whichever is earlier.

SSD is computed on the higher of the sale price or market value, and it applies to residential property only, commercial and industrial property are outside the SSD framework entirely. HDB flats are effectively outside it too, since the 5 year Minimum Occupation Period already prevents an open market resale within an equivalent window, though HDB applies its own separate rules for a very early exit. For an owner who holds a private property past the applicable window, SSD simply never applies, it is not a cost of ownership, only a cost of an early exit.

How the three actually combine

Because BSD, ABSD and SSD sit at different points on the timeline, the way they combine depends on what you are actually doing, not on a single formula that adds all three together.

How much of the total is actually payable from CPF varies by duty and by transaction, so confirm the current position with your conveyancing lawyer before you set your cash budget, rather than assuming BSD, ABSD and any legal fees can all be funded the same way. The one constant across all three duties is timing discipline: BSD and ABSD are due within a fixed 14 day window that starts the moment you exercise the Option to Purchase, and late payment attracts penalties regardless of how the rest of the transaction is going.

Frequently asked questions

Do I pay BSD, ABSD and SSD all at the same time?

No. BSD and ABSD, if it applies to you, are both due within 14 days of exercising the Option to Purchase, at the point you buy. SSD only comes into play if and when you later sell, and only if that sale happens within the applicable holding period. A buyer who holds a property for the long term may never encounter SSD at all, while BSD is unavoidable and ABSD depends entirely on your profile and property count.

Is ABSD calculated the same way as BSD?

No, and this is the most common mixup. BSD is progressive, different tiers of the purchase price are taxed at different rates, from 1 percent up to 6 percent. ABSD is a single flat rate applied to the entire purchase price at once, based on your citizenship or entity type and how many residential properties you already own. There is no tiering in ABSD, the applicable rate applies to every dollar of the price.

Does everyone pay Seller's Stamp Duty when they sell?

No. SSD only applies if you sell within the holding period counted from when you exercised the Option to Purchase to buy, or signed the Sale and Purchase Agreement, whichever is earlier, which is currently 4 years for property bought on or after 4 July 2025, or 3 years for property bought before that date. Sell after the applicable window closes and SSD is 0 percent. HDB flats are effectively outside the SSD framework, since the 5 year Minimum Occupation Period already prevents an open market sale within the equivalent window, though HDB applies its own separate early disposal rules.

Can a single transaction trigger both BSD and SSD?

Yes, in specific situations such as a share transfer between spouses, sometimes called restructuring. Transferring a share in a property is itself a dutiable transaction, so BSD is assessed on the value of the share transferred, at market value. If that transfer happens within the applicable SSD holding period of the original purchase, SSD can also apply to the transferred share at the rate for that year. The two duties are calculated on different bases but can both be triggered by the same document.

What is the property count based on for ABSD purposes?

It counts every residential property you own worldwide at the time you exercise the Option to Purchase, not just in Singapore. This includes partial interests of 1 percent or more, properties held on trust, and HDB flats you still own. A property bought decades ago and forgotten about still counts, which is why confirming your exact property count before making an offer matters more than most buyers expect.

Winfred Quek is an Associate Marketing Consultant at Crestbrick Pte Ltd (CEA Licence No. L31010886H), CEA Registration No. R073319H. The information on this page is general and does not constitute financial, legal or tax advice. Always conduct independent due diligence and consult qualified professionals, including your conveyancing lawyer, before making any property decision.