Singapore Mortgages: MAS TDSR 55%, HDB MSR 30%, and CPF Ordinary Account Financing

How MAS regulations govern Singapore home financing: Total Debt Servicing Ratio (TDSR), Mortgage Servicing Ratio (MSR) for HDB flats, CPF OA usage, and ABSD stamp duty tiers.

Updated 2026-09-06 · Reviewed against Monetary Authority of Singapore (MAS) and Housing & Development Board (HDB) statutory guidelines. · Fact-Checked Lending Norms

MAS Total Debt Servicing Ratio (TDSR 55%)

The Monetary Authority of Singapore (MAS) caps the Total Debt Servicing Ratio (TDSR) at 55% of verifiable monthly gross income. TDSR includes all debt obligations: home loans, car loans, student loans, and credit card facilities. Under MAS stress-testing rules, banks must evaluate residential loan repayments at an interest rate floor of at least 4.0%.

Mortgage Servicing Ratio (MSR 30%) for HDB & EC

When financing Housing & Development Board (HDB) flats or new Executive Condominiums (ECs), buyers face an additional cap: the Mortgage Servicing Ratio (MSR), which mandates that monthly mortgage installments cannot exceed 30% of gross monthly household income.

Central Provident Fund (CPF) Ordinary Account

Buyers can utilize their CPF Ordinary Account (OA) savings for initial down payments and monthly loan repayments, subject to the Valuation Limit (VL - 100% of property purchase price or valuation) and the Withdrawal Limit (WL - 120% of valuation). First-time buyers can also qualify for Enhanced CPF Housing Grants (EHG) up to S$80,000.

Buyer's Stamp Duty (BSD) and ABSD

Transaction costs include Buyer's Stamp Duty (BSD) tiered from 1% up to 6% for high-value properties, plus Additional Buyer's Stamp Duty (ABSD) based on residency and property count (Singapore Citizens pay 0% on 1st property, 20% on 2nd; Foreigners pay 60% on any residential purchase).

ℹ️ Statutory Notice & Methodology

Global Finance Calculator provides mathematical estimates for education, planning, and comparison — not regulated financial advice or credit pre-approval. Tax legislation, statutory central bank buffers, and underwriting criteria change. Confirm critical figures with official regulatory publications or a licensed mortgage broker before signing contracts.