Artist’s impressionWork out the Buyer’s Stamp Duty and the GST on a strata office or shop at One Sophia. For the cash flow across the build, use the purchase calculator.
The calculator opens at an illustrative $3,000,000, a round figure for working the arithmetic; it is not a unit price at One Sophia. Enter your own price; the Sales Concierge sends the current price list on request.
One Sophia Stamp Duty and GST Calculator
Purchase price
Figures update as you type.
Illustrative figure, enter your own price.
BSD is assessed on the higher of the price or market value, before GST, and is payable within 14 days of exercising the option.
Buyer’s Stamp Duty payable
Commercial scale — the position on every duty, stated in full.
How the duty is built up
BSD is marginal — each band is charged at its own rate.
Swipe sideways to see the full table
| Band | Rate | Amount in band | Duty from band |
|---|
GST on the purchase
Charged because the developer is GST-registered; on a unit under construction it falls due instalment by instalment.
How the One Sophia Stamp Duty Calculator Works
Buyer’s Stamp Duty is computed on the commercial scale: 1% on the first $180,000, 2% on the next $180,000, 3% on the next $640,000, 4% on the next $500,000 and 5% above $1,500,000. Every band is shown, including any the price does not reach, so the marginal structure is clear. At the illustrative $3,000,000 the duty is $119,600, an effective rate of about 4.0%.
The Duty Position at One Sophia
No Additional Buyer’s Stamp Duty arises on a commercial purchase, and commercial property carries no Seller’s Stamp Duty, whatever the holding period. Both appear in the calculator as not applicable, so the full position is visible in one place. The stamp duty and GST page covers each duty.
GST on a Purchase at One Sophia
GST at 9% applies to the price; on a building under construction it is charged on each instalment of the payment scheme. At the illustrative $3,000,000 that is $270,000 across the purchase, for a price including GST of $3,270,000. An operating GST-registered company may generally recover it as input tax as incurred, while a non-operating company would not usually start until TOP, subject to the rules set by IRAS.
What the One Sophia Duty Calculator Leaves Out
Legal and conveyancing fees, valuation, bank charges and the duty on a later lease sit outside it, and IRAS assesses duty on the higher of the price or the market value.
One Sophia Stamp Duty Calculator FAQ
How much Buyer's Stamp Duty is payable on a $3,000,000 unit at One Sophia?
BSD of $119,600, assessed on the price before GST: $1,800 on the first $180,000, $3,600 on the next $180,000, $19,200 on the next $640,000, $20,000 on the next $500,000 and $75,000 on the $1,500,000 above that. The $3,000,000 is an illustrative figure, not a unit price.
Is any Additional Buyer's Stamp Duty payable at One Sophia?
No. No Additional Buyer's Stamp Duty arises on a commercial purchase, for any buyer profile: Singaporean, permanent resident, foreigner, individual or company.
Is Seller's Stamp Duty payable if a One Sophia unit is later sold?
No. Commercial property carries no Seller's Stamp Duty, whatever the holding period.
Calculator tools on this site produce indicative estimates only and must be confirmed with IRAS, MAS or your bank.
Request One Sophia Floor Plans
The offices of One Sophia are open for sale, and the Sales Concierge sends the current price list with the units still available on each storey. Showflat viewings are arranged by appointment through the Sales Concierge.
Sent on request
- The current price list with the units still available.
- The e-brochure and the floor plans you shortlist.
- A payment schedule with the GST and stamp duty on your unit.
- A showflat appointment at a time that suits you.
Request the Price List
No obligation. The Sales Concierge responds personally to every enquiry.
Prefer to speak to someone? Call +65 6200 6220, or send a WhatsApp message to the same number.