TDSR, MSR, and Affordability

What Is TDSR and How Does It Affect You?

The TDSR framework was introduced to ensure borrowers do not take on more debt than they can comfortably manage. Under current MAS guidelines, your total monthly debt obligations — covering all loans including car loans, personal loans, student loans, and credit card commitments — cannot exceed 55% of your gross monthly income.

To illustrate: if you earn $8,000 per month, your total debt repayments across all obligations cannot exceed $4,400. The portion available for your mortgage will depend on what other debts you are already servicing. This is why clearing outstanding loans before applying for a home loan can meaningfully improve your borrowing capacity.

TDSR applies to all property types, whether you are buying an HDB flat, an Executive Condominium (EC), or private property.

What Is MSR and When Does It Apply?

The MSR is a more targeted rule that applies specifically to loans for HDB flats and ECs. It limits the amount of your gross monthly income that can go toward mortgage repayments to 30%. Using the same example, a buyer earning $8,000 per month can allocate no more than $2,400 toward their HDB or EC mortgage.

Crucially, both TDSR and MSR apply simultaneously for HDB and EC purchases — and it is the more restrictive of the two that governs your borrowing limit. In practice, MSR tends to be the binding constraint for most HDB buyers, as 30% is a tighter ceiling than the 55% TDSR threshold.

MSR applies whether you are buying a new Build-To-Order (BTO) flat, a resale HDB flat, or an EC within its minimum occupation period (MOP), so it is not limited to new launches alone.

Other Factors That Shape Your Loan

Beyond TDSR and MSR, two additional factors significantly influence what you can borrow. The Loan-to-Value (LTV) ratio caps how much of the property price a lender will finance. For bank loans on private property, this is typically up to 75% for borrowers with no outstanding loans, meaning you would need to fund at least 25% through cash and CPF. HDB loans also offer an LTV of up to 75% for eligible buyers, making them accessible for first-time flat purchasers.