Decoupling, 99-1, and owning two

Decoupling, 99-1, and enforcement

Eligibility: Private — yes. HDB — NO (blocked since April 2016; only divorce, death, financial hardship, renunciation of citizenship, medical grounds). EC — only after MOP, with the SSD clock running from original purchase date.

Costs to model:

Break-even: only proceed where net saving after all costs is ≥ ~$100,000. Commit to the second purchase first, structure second.

Worked: $5.0M landed, jointly held. Husband buys wife's $2.5M share → BSD ~$94,600 + legal ~$6,000 = ~$100,600. Wife then buys a $1.5M condo in sole name at 0% ABSD instead of 20% ($300,000). Net saving ≈ $199,400 before financing cost and CPF refund impact.

⚠️ The 99-1 line:

• Legitimate decoupling = genuine part-sale at market value, beneficial ownership matching legal title.
• Contrived 99-1 = clean-profile buyer buys alone, then transfers 1% days later to a higher-ABSD party. Tax avoidance under s.33A Stamp Duties Act.

Enforcement record:

• 187 cases reviewed by Apr 2024; 166 found to be tax avoidance; ~$60M clawed back.
• 50% surcharge on additional duty; penalties up to 4× if unpaid. No statutory time limit on stamp duty audits.
• Feb 2025: first criminal prosecution — mother and son, ~$200k in ABSD and surcharges, jail time, criminal records.
• IRAS whistleblower reward: 15% of tax recovered, up to $100,000.
• Wong Mei Lee Millie v Ngor Shing Rong Jake [2026] SGCA 27 — Court of Appeal confirmed courts may refuse to recognise hidden beneficial ownership where it supports an ABSD-avoidance arrangement.

Sell 1 HDB → buy 2 condos

Mechanic: couple sells jointly-owned HDB → each spouse buys separately in sole name → each counts as a first property → 0% ABSD each, 75% LTV each.

Hard prerequisites:

1. Each spouse must pass TDSR independently. No income pooling. This kills most single-earner households.
2. CPF refund on the HDB sale — principal + accrued interest — returns to each OA, not to cash.
3. Two sets of 5% cash, two BSD bills, two sets of legal fees.
4. Only one spouse's CPF OA can fund each property.
5. Vacancy, rate and yield risk on the investment leg.
6. Sole ownership means sole legal title. Discuss it openly.

2026 caution: MAS has publicly cautioned on overextending via this route. With OCR/RCR non-landed softening and ~61,000 completions ahead, the rental assumption is the fragile variable. Model at 80% occupancy.

Alternative upgrade paths:

ABSD Married Couple Remission: sell the first property within 6 months of the second property's purchase/completion (completed resale) or within 6 months of TOP/CSC, whichever is earlier (new launch). Refund application within 6 months of sale; auto-refunded ~6 weeks from stamping. Requires SC+SC or SC+PR, married at purchase, second property in both names only, no other property acquired since. IRAS will not extend the 6-month timeline. Ever.

Stamp duties — the complete picture

Buyer's Stamp Duty (BSD) — residential, unchanged since 15 Feb 2023

Worked: $500k → $9,600 · $1.0M → $24,600 · $1.5M → $44,600 · $2.0M → $69,600 · $2.5M → $94,600 · $3.0M → $119,600

Additional Buyer's Stamp Duty (ABSD) — unchanged since 27 Apr 2023; no change in Budget 2026

• Computed on higher of price or market valuation.
• Joint purchase → highest applicable rate among all buyers applies to the whole price.
• FTA exemption (treated as SC): nationals of USA, Iceland, Liechtenstein, Norway, Switzerland.
• Due within 14 days of OTP exercise / S&P.

Seller's Stamp Duty (SSD) — two regimes, always check acquisition date

Announced 3 Jul 2025 (MAS/MOF/MND). No transition period. Trigger is the date of acceptance/exercise of OTP. HDB effectively unaffected — the 5-year MOP exceeds the SSD window. Applies to post-MOP ECs, condos, landed, and sub-sales of uncompleted units.

Mortgage Stamp Duty (the one everybody forgets)

• 0.4% of the loan amount, capped at $500. Payable by the borrower.
• Applies to both HDB (Deed of Assignment) and private property mortgages.
• Payable by cash or CPF for residential.

Lease / Tenancy Stamp Duty (Deck 4)

• Base = contractual or market rent, whichever is higher. Rent includes maintenance/service charges, furniture & fittings charges, A&P charges. Excludes GST.
• Where rent is stepped or there's a rent-free period, IRAS uses Average Annual Rent — e.g. 24 months at $4,000 with 1 month free → effective rent $92,000, AAR $46,000.
• Due within 14 days of signing (30 days if signed overseas). Late penalty: higher of $10 or the duty amount up to 3 months late; up to 4× the duty beyond.
• By convention the tenant pays, but both parties are jointly liable under the Stamp Duties Act. The TA should state it explicitly.
• Minimum $1, rounded down to the nearest dollar.

Worked (put these on the slide):

(Note: a widely-circulated PropertyGuru example applies 0.4% to year one and 0.2% to year two. That is incorrect for a definite lease of ≤4 years. IRAS applies 0.4% to the total rent for the period. Use the table above.)