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$460,000 in cash (25% down + BSD ~S$44,600 + 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?
Run the same S$1.8 million condo through three different yield metrics and you get three different verdicts on whether it is a good investment. Gross yield says 3.8%. Net yield says 2.7%. Cash-on-cash return says the deal loses money every year. All three numbers are correct — they are just answering different questions, and only one of them tells a leveraged buyer what actually lands in the bank account.
Cash-on-cash return (CoC) measures your annual pre-tax cash flow against the actual cash you put into the deal — not the property's purchase price, and not its current market value. That distinction matters because most Singapore condo buyers finance 75% of the purchase (as of 2026-07, the maximum Loan-to-Value ratio for a first housing loan from a bank under MAS's financing and Loan-to-Value framework) through a mortgage. Gross and net yield both divide by the full S$1.8 million price. CoC divides by the far smaller sum you actually wrote cheques for: the downpayment, Buyer's Stamp Duty (BSD), any Additional Buyer's Stamp Duty (ABSD), and legal costs.
Cash-on-cash return = annual pre-tax cash flow ÷ total cash invested × 100
For an all-cash buyer, CoC and net yield converge because the cash invested is close to the full price. For a leveraged buyer, CoC falls below net yield whenever the mortgage's annual cost exceeds what leverage saves on cash invested — mortgage principal and interest payments consume rental income while the denominator shrinks. This is why comparing a highly-geared condo against a fully-paid one on gross yield alone compares the wrong things entirely.
How to Calculate CoC
CoC has two moving parts: the cash you put in once, and the cash flow you collect every year after that. Both need to be built up from real line items — not the headline purchase price.
- Step 1 — Total cash invested. Add downpayment (25% of price for a bank loan at 75% LTV, of which at least 5% of the price must be cash) + Buyer's Stamp Duty + any Additional Buyer's Stamp Duty + legal and valuation fees (S$2,500–S$3,500). These come from the tiered BSD/ABSD schedules — the site's stamp duty tool computes the exact amount for your price and buyer profile.
- Step 2 — Annual gross rent. Twelve months of rent at your expected rate, minus a vacancy allowance — one month a year is a common planning assumption for a well-located unit.
- Step 3 — Annual outgoings. Mortgage principal and interest (both, not interest-only — principal repayment is still cash leaving your account each month), MCST maintenance fees, and property tax at the non-owner-occupier rate. Model your loan repayment with the mortgage repayment calculator using your actual bank quote.
- Step 4 — Net annual cash flow. Gross rent (post-vacancy) minus every outgoing in Step 3.
- Step 5 — Divide. Net annual cash flow ÷ total cash invested from Step 1, ×100 for a percentage.
Two figures trip people up. First, ABSD belongs in Step 1 even though it feels like a one-off tax rather than an "investment" — it is cash you deployed to close the deal, and excluding it inflates CoC artificially. Second, mortgage principal is not a loss — it is building equity — but it is still cash leaving your pocket this year, so it belongs in Step 3 for a cash-flow calculation (a separate return-on-equity figure would add principal repayment back in).
CoC vs Gross Yield vs Net Yield
Three metrics, three denominators, three very different pictures of the same condo. The gross vs net rental yield comparison covers the first two in depth; here is where cash-on-cash return fits alongside them.
| Metric | Formula | Denominator | What it hides |
|---|---|---|---|
| Gross yield | Annual rent ÷ price | Full purchase price | Every holding cost and financing cost |
| Net yield | (Rent − MCST − property tax) ÷ price | Full purchase price | Financing structure — identical whether you pay cash or borrow 75% |
| Cash-on-cash return | (Rent − MCST − property tax − mortgage) ÷ cash invested | Downpayment + BSD + ABSD + legal only | Nothing on the cash side — but ignores equity growth and capital appreciation |
Gross yield is a fast screening tool for comparing districts or unit types — use the rental yield calculator for that first pass, cross-checked against URA's private residential transaction data for your district. Net yield strips out running costs but still assumes an all-cash purchase, which describes almost no leveraged Singapore buyer. Cash-on-cash is the only one of the three that answers the question an investor actually cares about: for every dollar tied up to make this deal happen, how much comes back each year?
The trade-off is that CoC says nothing about capital appreciation or the equity built through mortgage repayment — a condo with negative CoC can still be a sound long-term holding if the price appreciates, or if the goal is ABSD-adjusted portfolio value over annual cash. That is a portfolio-strategy question, not a cash-flow one.
Worked Examples
Consider an SC investor buying a S$1.8 million condo as a second property, financed at 75% LTV. This is where the gap between gross yield and cash-on-cash return shows up in dollars rather than percentages.
Cash invested. Downpayment is 25% of price. Because this is a second residential property for a Singapore Citizen, ABSD is charged at 20% (as of 2026-07) on top of the standard BSD.
| Line item | Basis | Amount |
|---|---|---|
| Downpayment | 25% of S$1,800,000 (75% LTV) | S$450,000 |
| Buyer's Stamp Duty | Tiered BSD schedule | S$59,600 |
| ABSD (SC, 2nd property) | 20% of S$1,800,000 | S$360,000 |
| Legal & valuation | Illustrative estimate | S$3,000 |
| Total cash invested | S$872,600 |
Annual cash flow. Rent of S$5,700 a month gives S$68,400 a year before vacancy — a 3.8% gross yield. The mortgage is the S$1,350,000 loan balance (75% of price), repaid over 30 years at an illustrative 2.0% p.a. floating rate — check current bank packages on the mortgage calculator before assuming this rate applies to you. MCST and property tax are illustrative figures for this unit type and should be checked against your own MCST budget and IRAS's current property tax bands.
| Line item | Amount |
|---|---|
| Gross rent (12 months) | S$68,400 |
| Less: vacancy allowance (1 month/yr) | −S$5,700 |
| Less: mortgage (principal + interest) | −S$59,880 |
| Less: MCST maintenance | −S$4,200 |
| Less: property tax (non-owner-occupier) | −S$9,300 |
| Net annual cash flow | −S$10,680 |
Net annual cash flow of −S$10,680 divided by S$872,600 cash invested gives a cash-on-cash return of −1.2% — a deal that looks like a solid 3.8% gross yield is running a cash deficit every year once ABSD-inflated cash invested and full mortgage service are counted. The investor is still building equity through the loan's principal repayment, but no cash comes back until rent rises, the loan is refinanced down, or the balance is paid down further.
Leverage Impact on CoC
The same condo, bought by the same SC investor as a second property but paid fully in cash, tells a different story. ABSD still applies at 20% since it depends on buyer profile and property count, not financing method — only the downpayment percentage and the mortgage cost change.
| Scenario | Cash invested | Net annual cash flow | Cash-on-cash return |
|---|---|---|---|
| 75% LTV mortgage | S$872,600 | −S$10,680 | −1.2% |
| All-cash, no loan | S$2,222,600 | S$49,200 | 2.2% |
Leverage cuts both ways. It shrinks the denominator dramatically — cash invested drops from S$2,222,600 to S$872,600, a 61% reduction — but it also adds a large, fixed annual outgoing that the all-cash scenario does not carry: the mortgage's principal and interest. Here, that outgoing outweighs the denominator benefit and CoC turns negative. Whichever effect dominates depends on the spread between gross rental yield and the true cost of servicing the loan; when the yield comfortably clears that cost, leverage amplifies CoC, and when it does not, leverage destroys it — exactly what happens here at a 3.8% gross yield against a fully-amortising 75%-geared loan.
This is the mechanism behind positive versus negative cash flow property decisions: two investors can hold the identical unit and one has positive cash flow while the other is cash-flow negative, purely because of how much they borrowed.
When CoC Matters Most
CoC is not equally important in every buying decision. It matters most in three situations.
Comparing leveraged properties against each other. If you are choosing between two condos financed at similar LTV, CoC ranks them by actual cash return far more usefully than gross yield, which ignores financing entirely.
Building a multi-property portfolio. Each additional residential property raises your ABSD tier — 30% for an SC's third property, as of 2026-07 — which inflates cash invested and depresses CoC on every subsequent purchase even at an identical price and rent. The multi-property portfolio ABSD strategy guide covers how to sequence purchases around this.
Assessing near-term affordability. A negative CoC does not mean a bad investment — but it means the property will not fund itself, and spare monthly cash flow from salary or other assets is needed to service the shortfall for as long as it persists.
A negative CoC compounds if CPF funded the downpayment. Every dollar of CPF Ordinary Account withdrawn accrues interest at 2.5% p.a. (as of 2026-07) that must be refunded to CPF when the property is sold, per CPF's rules on using OA savings for property — on top of the cash shortfall already being funded monthly. That refund reduces eventual sale proceeds, so a negative-CoC, CPF-funded purchase draws down two different pools of money at once.
CoC matters least for an owner-occupier rather than a landlord — there is no rental income to net against outgoings, so the metric collapses to how much the property costs to hold, which is a budgeting question rather than a return calculation.
Improving Your CoC Return
Four levers move CoC, and they interact with each other more than most investors realise.
- Refinance when rates fall. Cutting the mortgage rate directly lowers the numerator's largest outgoing without touching cash invested. Compare current packages against the existing loan before the lock-in period ends.
- Extend the loan tenure. A longer tenure — up to 30 years for a private property loan — lowers the monthly instalment and therefore the annual mortgage outgoing, at the cost of paying more total interest over the life of the loan.
- Reduce vacancy. Every month a unit sits empty removes a full month of gross rent from the numerator with no matching reduction in mortgage, MCST, or property tax. Pricing rent to clear the market quickly often beats holding out for a marginally higher rate.
- Increase the downpayment. Putting down more than the 25% minimum raises cash invested but cuts the loan and its interest cost — work through the numbers on the total cost of ownership calculator before assuming this always helps.
Model CoC before exercising the Option to Purchase, not after. Once ABSD and legal fees are paid, cash invested is fixed — the only levers left are negotiating rent or refinancing, both of which move CoC far less than choosing a lower price or a smaller loan would have upfront.
Common Calculation Mistakes
The same handful of errors distort CoC in almost every DIY spreadsheet.
- Leaving ABSD out of cash invested. Treating ABSD as a tax rather than deployed capital inflates CoC by understating the denominator — sometimes dramatically, since ABSD alone can exceed the downpayment on a second or third property.
- Using interest-only mortgage cost. Principal repayment is still cash leaving your account this year. An interest-only figure overstates net cash flow; use the full instalment from the mortgage schedule.
- Skipping vacancy. A model built on 12 months of continuous occupancy every year is not a cash flow forecast — it is a best case.
- Guessing property tax instead of checking current bands. IRAS revises Annual Value bands periodically, and the non-owner-occupier schedule is materially higher than the owner-occupier one — check the current-year figures directly rather than reusing an old year's rate.
- Ignoring CPF accrued interest as a future cash-flow drag. It does not hit the annual CoC calculation directly, but it reduces the cash walked away with at sale, which matters if the holding-period plan depends on that exit proceeds figure.
Run the calculation once with an actual mortgage quote, MCST budget, and current IRAS property tax bands, and CoC becomes the most honest single number in an investment case — more honest than gross yield, and more actionable than net yield, because it is denominated in the only currency actually spent: real cash.
Frequently Asked Questions
What is a good cash-on-cash return?
A good cash-on-cash return is one that clearly beats risk-free alternatives — CPF Ordinary Account pays 2.5% p.a. (as of 2026-07), so any leveraged property return below that means the debt isn't earning its keep. There's no official Singapore benchmark for this metric; what counts as good depends on your loan rate, rental income and cash outlay, not a fixed percentage. If your cash-on-cash return sits below your mortgage rate, you're relying on capital appreciation alone, not income, to make the deal work.
How is CoC different from rental yield?
Cash-on-cash return and rental yield measure different things: gross rental yield is annual rent divided by the property's purchase price or value, ignoring financing entirely, while cash-on-cash return is annual net cash flow (rent minus mortgage payments, property tax and maintenance) divided by the actual cash you put in — the down payment plus buyer's stamp duty and legal costs. Because Singapore buyers can finance up to 75% of a private property (LTV, as of 2026-07), cash-on-cash return isolates how hard your smaller cash outlay is actually working, something yield alone can't show.
Does leverage improve CoC?
Yes — leverage amplifies cash-on-cash return whenever your rental income after expenses exceeds your mortgage interest cost, because you're earning that spread on a much smaller cash base, as little as 25% of the price under the 75% LTV cap (as of 2026-07). But leverage cuts both ways: if rents dip, rates rise, or vacancy hits, the same smaller cash base means losses are magnified too. Always stress-test your cash-on-cash figure at the 4.0% medium-term stress-test rate used for TDSR, not just your current mortgage rate.