Cash-on-cash return measures how much cash your invested downpayment earns each year from net rental income — not the property’s total value. As of 2026-Q2, Singapore condo investors using leverage typically see cash-on-cash returns between 3–9%, depending on district, unit size, and SORA-linked mortgage rate. The metric is essential for buy-to-let decisions because gross yield routinely flatters while cash-on-cash exposes the true drag of debt service, ABSD, and holding costs.
What if the condo you bought for S$1.5 million is technically “yielding” 3.8% gross — yet after your mortgage, maintenance, and property tax, you’re netting less than S$5,000 a year on S$450,000 of cash you’ve deployed? That is exactly the trap gross yield sets for leveraged investors in Singapore, and cash-on-cash return (CoC) is the single number that makes it visible.
With 3-month compounded SORA sitting at approximately 1.00% as of 2026-05 and all-in mortgage rates at roughly 1.70%–2.20% for floating packages, the cost-of-leverage picture has shifted meaningfully from the 3%+ rates of early 2025. Understanding how that shift flows through to CoC — and how to model it before you commit to a deal — is what this guide covers.
The formula. Cash-on-cash return is calculated as:
CoC = (Annual Net Cash Flow ÷ Total Cash Invested) × 100
Where Annual Net Cash Flow = Gross Annual Rent − Mortgage Interest (P&I) − Property Tax − Maintenance / MCST fees − Agent fees − Insurance − Vacancy allowance. And Total Cash Invested = Downpayment + Buyer’s Stamp Duty + ABSD (if applicable) + Legal fees + Renovation.
How it differs from gross yield. Gross yield divides annual rent by the full purchase price, ignoring leverage and costs entirely. A S$1.5M condo renting at S$4,800/month produces a gross yield of 3.84% — which looks acceptable. But if 75% is mortgage-financed, the buyer deployed roughly S$530,000 in cash (25% down + BSD ~S$39,600 + legal ~S$5,000 + renovation ~$35,000). After mortgage interest (~S$19,500/year at 1.95%), property tax (~S$4,200), maintenance (~S$3,000), agent fees and vacancy (~S$4,800), annual net cash flow is approximately S$25,100 (as of 2026-Q2 rate assumptions). That gives a CoC return of ~4.7% — better than gross yield implies, but only because SORA is low. Stress-test at 2.8% (comparable to early 2025 peak): net cash flow drops to roughly S$15,400 and CoC falls to ~2.9%.
For foreign buyers subject to 60% ABSD (as of 2026-04), the “total cash invested” denominator balloons by S$900,000 on a S$1.5M property, collapsing CoC to below 1% even on the same rental income. URA REALIS data confirms that foreign buyer transaction volume has fallen sharply since the April 2023 ABSD hike, consistent with this CoC destruction.
What Is Cash-on-Cash Return?
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How to Calculate CoC
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CoC vs Gross Yield vs Net Yield
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Worked Examples
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Leverage Impact on CoC
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When CoC Matters Most
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Improving Your CoC Return
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Common Calculation Mistakes
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Singapore CoC benchmarks by district segment (as of 2026-Q1 URA REALIS rental data):
| Segment | Typical Gross Yield | All-in Mortgage Rate | Estimated CoC (25% down) | Notes |
|---|---|---|---|---|
| CCR (D1–D4, D9–D11) | 2.5%–3.2% | ~1.95% | 1.5%–4.0% | High entry cost, high ABSD exposure for foreigners |
| RCR (D5, D7–D8, D12–D15, D20) | 3.0%–3.8% | ~1.95% | 3.5%–6.0% | Best CoC/yield balance for Singapore PRs and citizens |
| OCR (D16–D19, D21–D28) | 3.5%–4.5% | ~1.95% | 5.0%–9.0% | Highest CoC; driven by strong HDB upgrader rental demand |
These ranges assume a Singapore citizen second-property buyer (20% ABSD) using a 75% LTV mortgage at a SORA-linked rate. Use the Cash Flow Calculator to model your specific deal, or the ROI Calculator to compare CoC across holding periods.
Unit-size effect. Studio and 1-bedroom units in OCR districts 14, 15, and 19 consistently post the highest gross yields (4.0%–4.5% as of 2026-Q1) because rental demand from young professionals and expats supports rents disproportionate to purchase price. However, for leveraged CoC, the higher ABSD on smaller-unit investors (if it is a second property) offsets some of this advantage. The Studio vs 1-Bed vs 2-Bed investment guide models this trade-off in detail.
Rental tax drag. IRAS taxes net rental income at the property owner’s personal income tax rate, after deducting allowable expenses (mortgage interest, property tax, fire insurance, maintenance, agent fees). At a 22% marginal rate on S$25,000 net rent, tax payable is roughly S$5,500 — reducing after-tax CoC by approximately 0.9 percentage points on a S$600,000 cash outlay. See the IRAS rental income tax guide for the full deduction schedule.
- Calculate your real cash outlay first. Total up: downpayment, BSD, ABSD (if any), legal fees, renovation, agent fees. This is your true denominator. Use the Total Acquisition Cost Calculator to avoid missing line items.
- Model three SORA scenarios. Base case: 3M compounded SORA at 1.00% (as of 2026-05). Bear case: SORA reverting to 2.0% (comparable to 2024-H2). Stress case: 3.0% (2025-Q1 peak). A deal that only “works” at sub-1.5% SORA carries meaningful refinancing risk. Run the numbers in the Mortgage Calculator across all three assumptions.
- Include a 5% vacancy allowance. Singapore MOM and URA data show average private residential vacancy at 5%–7% in recent quarters. Modelling 100% occupancy inflates CoC by 0.2–0.4 percentage points.
- Check your TDSR headroom. A second investment property must still clear TDSR 55%. Use the TDSR Calculator before committing to a purchase price, since a lower loan quantum changes both debt service and CoC.
- Compare CoC across districts using yield maps. The Rental Yield Map and Rental Yield by District tool let you screen districts by gross yield as a starting point, then apply your personal cost structure to narrow to a CoC shortlist.
- Run a holding-period sensitivity. CoC is a year-one snapshot. Holding Period Returns analytics show how Singapore condo values have trended across 5-, 7-, and 10-year windows, giving context for whether capital appreciation closes any CoC gap.