A maximum loan is not the same as an affordable home
When planning a home purchase, it is easy to focus on how much a lender may allow you to borrow. But the monthly instalment is only one part of owning a home. There are also upfront costs, insurance, property tax, maintenance charges, utilities, repairs and the possibility of a higher payment if a floating rate rises.
MoneySense recommends planning for both upfront expenses and ongoing ownership costs, and asking whether income is steady or commission-based. Keep enough cash for the deposit and other costs, but also consider whether the household could make payments during a period of reduced income.
MSR looks at the mortgage
The Mortgage Servicing Ratio (MSR) compares the monthly mortgage repayment with gross monthly income. MoneySense says an HDB or Executive Condominium instalment must not exceed 30% of gross monthly income when buying an HDB flat or an EC still within its minimum occupation period.
The MSR is a lending rule; it does not calculate your own comfortable spending level. A household with childcare costs, debt repayments or variable income may need to keep its mortgage payment below the maximum permitted ratio.
TDSR looks at all monthly debt
The Total Debt Servicing Ratio (TDSR) compares all monthly debt payments—not just the mortgage—with gross monthly income. MoneySense states that the current TDSR threshold is 55% for property loans. Other loan payments such as car, credit-card and personal-loan commitments can therefore affect how much additional housing debt a lender may approve.
These two tests answer different questions: MSR focuses on the mortgage for specified HDB/EC purchases; TDSR considers a borrower’s overall monthly debt. Eligibility also depends on lender assessment and other rules, so a calculator result is only an estimate.
LTV and cash needs are different again
Loan-to-Value (LTV) compares the loan amount with the property value used for assessment. MoneySense explains that bank-loan LTV limits vary with the number of outstanding housing loans, the loan tenure and the borrower’s age. A lower permitted LTV means a larger downpayment may be needed. Check the applicable rules and cash minimum for your own case rather than applying a single percentage to every purchase.
Even an eligible borrower should compare a proposed instalment with the whole household budget. Add taxes, insurance, management fees, renovation costs and expected repairs. Then leave room for an emergency reserve and existing goals. CPF savings may help with some approved expenses, but they do not cover every housing cost.
Make a conservative affordability test
Try a budget at the expected payment, then stress it with a lower income month or higher floating-rate instalment. If the budget works only when there are no surprises, it is tight. Ask the lender for a repayment schedule and review the property loan fact sheet, which MoneySense says shows the loan’s key terms and an illustration of how rate changes may affect repayments.
The useful question is not only “Can I get this loan?” It is “Can I keep this home while paying for the rest of life?” A slightly smaller loan can leave a household more room to absorb surprises and pursue other goals.
Sources
- MoneySense: Buying a property—how much can you afford? — MSR, TDSR, LTV and housing-budget guidance; verified 15 Oct 2026.