Mortgage Servicing Ratio (MSR) in Singapore: Your Questions Answered

Updated 5 Oct 2026 in Property & HDB

These are the questions people ask most often about mortgage servicing ratio (msr). Each answer is short; follow the links for the full detail.

What does a mortgage servicing ratio (msr) calculation tell me?

MSR caps the instalment on HDB flats and ECs bought from developers at 30% of gross monthly income.

What is the formula?

Maximum instalment = 30% × gross monthly income.

What do I need to enter?

Gross monthly household income (S$).

Should I rely on this before signing?

Use it to plan, then confirm the figures with your banker, lawyer or the IRAS stamp duty calculator before you exercise an option to purchase.

Can you show an example?

For example, with these inputs:

the calculator returns:

Any tips?

Background

Beyond the price, buyers should budget for legal fees, valuation, home insurance, renovation and furnishing. Running the figures in advance helps you decide how much cash to hold back and whether a smaller loan or longer tenure makes more sense.

Singapore's property market is shaped by cooling measures introduced since 2009, including Additional Buyer's Stamp Duty, loan-to-value limits and debt servicing ratios. These rules are adjusted when the market runs hot, so the numbers you see today may differ from what friends paid a few years ago.

CPF Ordinary Account savings can pay for the downpayment, stamp duties and monthly instalments, but using CPF reduces the money compounding for retirement, and the amount withdrawn plus accrued interest must be refunded to your CPF account when you sell.

Related calculations

Try it yourself with the Mortgage Servicing Ratio (MSR) Calculator.

Run your own numbers: Mortgage Servicing Ratio (MSR) Calculator

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