Buy vs rent and invest the difference.
Verdict
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Buy: net wealth
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Rent + invest
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Your breakdown
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The honest version of the rent-versus-buy fight
The instinct in Singapore is that renting is throwing money away and owning is always smarter. That is too simple. The fair comparison is not buying against renting, it is buying against renting plus investing every dollar you did not sink into the property. The down payment alone is a six-figure sum that, left in the market, compounds on its own. This tool runs both paths off the same starting cash and tells you which leaves you wealthier at the end of your chosen horizon. It deliberately keeps things clean by leaving stamp duties and tax out of the model, so treat the verdict as the investment-versus-investment core of the decision, not the full closing-cost picture.
One feature of Singapore that quietly favours the owner is that there is no capital gains tax. When your home appreciates, the entire gain is yours on sale, untaxed. The flip side is that the same is true of your investment portfolio: gains on shares and ETFs are also not taxed here, and under the one-tier system local dividends arrive in your hands free of further tax. So neither side of this comparison loses anything to a capital gains charge, which is exactly why the two paths can be compared on pre-tax growth alone.
A $1.5 million home against renting at $4,000 a month
Take the defaults: a $1.5 million property, $400,000 of down payment and costs, a 3.5 percent mortgage over 25 years, against renting at $4,000 a month while investing the $400,000 plus any monthly surplus at 6 percent. Assume the home grows 3 percent a year and you hold for 10 years.
On these assumptions buying ends $369,049 ahead. The reason is the forced saving inside the mortgage: each repayment chips at the loan and builds equity, while the leveraged home grows on its full $1.5 million value rather than just your $400,000 stake. The lines below show the two net-wealth paths diverging over the decade.
Where the verdict flips
Do not read one result as a universal law. The answer is exquisitely sensitive to three dials. Push the investment return well above the property growth rate and renting starts to win, because the surplus you invest outruns the home’s appreciation. Shorten the horizon and renting also tends to win, since the heavy upfront costs of buying have not had time to be outweighed by equity build, and a short hold is exactly when a transaction-cost-heavy purchase looks worst. Stretch the horizon out, and ownership usually pulls ahead and stays there. Try setting the horizon to three years versus fifteen with the same other inputs and watch the verdict change.
A practical caution this model does not capture: the real-world cost of buying is front-loaded by Buyer’s Stamp Duty, legal fees, and renovation, and a second property attracts Additional Buyer’s Stamp Duty that can run to a fifth of the price or more for a citizen’s second home. If you are deciding on an investment property rather than a home to live in, those entry costs materially blunt the buying case, so add them mentally to the down payment figure before trusting the verdict.
Does using CPF for the mortgage change the comparison?
It changes the cashflow but not cleanly in your favour. CPF Ordinary Account money used for the home would otherwise have earned 2.5 percent guaranteed, and there is an accrued interest rule: when you sell, you must return to your CPF account the amount you withdrew plus the interest it would have earned. That return reduces the cash you walk away with. This tool models a straightforward cash-and-loan purchase, so if you intend to fund heavily from CPF, treat the buy-side wealth here as somewhat optimistic.
Why does the tool grow my rent each year?
Because rents in Singapore do not stay flat over a decade. The calculation nudges the monthly rent up by 3 percent a year, which shrinks the surplus available to invest as time passes and is a realistic drag on the rent-and-invest path. If your lease is unusually stable or you expect rents to fall, the rent-and-invest side would look slightly stronger than the default output suggests.