MSR Calculator Singapore 2026
Mortgage Servicing Ratio — HDB & EC 30% Limit with TDSR 55% Dual-Gate Check
Calculate your Mortgage Servicing Ratio (MSR) under the MAS 30% framework for HDB flat and Executive Condominium (EC) purchases. The MSR limits the mortgage instalment alone to 30% of gross monthly income — a stricter inner gate on top of the 55% TDSR (Total Debt Servicing Ratio) that covers all debts. This dual-gate calculator checks both MSR and TDSR simultaneously, identifies which is the binding constraint, and calculates your maximum HDB/EC property budget based on the tighter of the two limits.
Combined fixed gross monthly salary for all borrowers (before CPF and tax deductions). For joint applications, add both incomes.
Monthly average of variable income (bonuses, commissions). MAS counts only 70% (30% haircut).
HDB loans: max 25 years. Bank loans for HDB: max 25 years (or 30 years for EC bank loans). If loan extends past age 65, LTV drops to 55%.
3.5% of outstanding balance = deemed monthly obligation for TDSR.
Enter your income, HDB/EC property details, and existing debts. The calculator checks both MSR (30% mortgage-only) and TDSR (55% all-debts) simultaneously and identifies which is the binding constraint on your borrowing capacity.
MSR Singapore 2026 — The 30% Mortgage Servicing Ratio for HDB Flat & Executive Condominium Buyers
The Mortgage Servicing Ratio (MSR) is a MAS-mandated affordability measure that applies only to HDB flats and Executive Condominiums (ECs). It limits the monthly mortgage instalment to 30% of the borrower’s gross monthly income. Unlike TDSR (which includes all debts), MSR considers only the new property loan instalment. HDB and EC buyers must pass both MSR (30%) and TDSR (55%) — a “dual-gate” system where the tighter of the two constraints determines the maximum borrowing. For private property (condos, landed), only TDSR applies — there is no MSR constraint. This is why HDB/EC buyers have a lower effective borrowing limit than private property buyers at the same income level.
MSR vs TDSR: The Dual-Gate System
| Feature | MSR (30%) | TDSR (55%) |
|---|---|---|
| What it limits | Mortgage instalment only | All monthly debts combined |
| Applies to | HDB flats & EC only | All property loans |
| Threshold | 30% of gross income | 55% of gross income |
| Stress-test (variable) | 4% medium-term rate | 4% medium-term rate |
| Income haircut (variable) | 70% of variable income | 70% of variable income |
| Private property | Not applicable | Applies |
| Binding when? | For buyers with no/low other debts | For buyers with high existing debts |
When MSR vs TDSR Is the Binding Constraint
For most HDB/EC buyers without significant other debts (no car loan, no personal loan), MSR is the binding constraint. If the mortgage is under 30% of income, it will automatically be under 55% since there are no other debts. But for buyers with large existing commitments (e.g., a S$2,000/month car loan), the TDSR can become binding even when the mortgage alone passes MSR. This calculator identifies which gate is tighter and calculates your maximum property budget accordingly.
How This MSR Calculator Works — Dual-Gate Check, Binding Constraint & Maximum Budget
Step 1 — Enter Income and HDB/EC Loan Details
Enter your gross monthly income (fixed + variable at 70%), select HDB or EC, choose your loan type, and enter the property price, down payment, rate, and tenure. The calculator computes the monthly instalment and applies the stress-test rate for variable loans.
Step 2 — Add Existing Debts for the TDSR Cross-Check
Enter all existing monthly debts. The calculator checks both MSR (mortgage alone vs 30%) and TDSR (all debts vs 55%) simultaneously, showing both ratios side by side with pass/fail verdicts.
Step 3 — See the Binding Constraint and Maximum Budget
The calculator identifies which gate — MSR or TDSR — is the binding constraint and calculates the maximum property price you can afford based on the tighter of the two limits. The stacked chart visualises mortgage, other debts, and headroom against both thresholds.
3 Real Singapore MSR Examples — HDB BTO First-Timer, EC Couple with Car Loan & HDB Upgrader
HDB BTO, S$6K Income, No Debts
EC Couple, S$12K + S$1.5K Car
HDB Upgrader, S$10K + S$2.5K Debts
3 Expert MSR Tips — Why MSR Limits HDB More Than Private, EC Income Ceiling & the Bank-vs-HDB Choice
MSR Is Why HDB Buyers Can Borrow Less Than Private Buyers at the Same Income
At S$10,000 gross income with no other debts: the MSR ceiling (30%) allows a maximum mortgage instalment of S$3,000/month, which supports a loan of about S$570,000 at 2.6%/25yr — an HDB up to about S$760,000 (at 75% LTV). But for a private condo buyer at the same income, there is no MSR — only TDSR (55%): the ceiling is S$5,500/month, supporting a loan of about S$1,045,000 and a property up to about S$1,393,000. The gap is enormous: the private buyer can afford a property 83% more expensive than the HDB buyer, purely because MSR does not apply to private property. This is a deliberate policy design — MAS applies MSR to HDB/EC to moderate public housing demand and ensure borrowers for subsidised housing maintain a conservative debt profile.
EC Income Ceiling: You Must Pass MSR AND Earn Under S$16,000
Executive Condominiums have a household income ceiling of S$16,000/month (gross) at the point of application. This ceiling applies on top of MSR and TDSR. A couple earning S$16,000 combined has an MSR ceiling of S$4,800/month (30% of S$16,000). At 3% over 25 years, that supports a maximum loan of about S$913,000, and at 75% LTV, a maximum EC price of about S$1,217,000. In practice, popular new-launch ECs are priced at S$1.1M–S$1.4M (for 3–4 bedroom units), meaning couples near the income ceiling can comfortably qualify, while couples at S$12,000–S$14,000 income may struggle with the larger units. If the mortgage fails MSR at the asking price, you must either increase the down payment (reducing the loan amount) or choose a smaller unit. You cannot increase the income ceiling — it is a hard cap for EC eligibility.
Bank Loan vs HDB Loan for MSR: Both Apply the Same 30% Limit
A common misconception: taking a bank loan instead of an HDB concessionary loan avoids the MSR. This is false. MSR applies to all loans for HDB flats and ECs, whether the loan is from HDB or a bank. The 30% limit is the same. However, the assessment rate differs: an HDB loan at 2.6% is assessed at 2.6% (actual rate), while a bank variable-rate (SORA) loan may be assessed at 4% (stress-test). This means the same loan amount can pass MSR with an HDB loan but fail with a bank variable-rate loan — because the stress-tested instalment is higher. For borderline MSR cases, the HDB concessionary loan at 2.6% is more likely to pass than a bank SORA package assessed at 4%. This is one reason many HDB buyers prefer the HDB loan despite potentially lower bank rates: the MSR assessment is more favourable.