MSR & TDSR Guide: Understanding Your Housing Loan Limits
Before I help you shortlist a property, I encourage you to understand how much you can realistically borrow—and comfortably repay.
Two important measures are the Mortgage Servicing Ratio (MSR) and Total Debt Servicing Ratio (TDSR). These help determine how much of your income can go towards loan repayments.
In this guide, I explain the difference, illustrate how the calculations work and outline what I would check before committing to a purchase.
1. What Is MSR?
MSR measures the proportion of your gross monthly income used to service property loans, including the proposed housing loan.
The applicable MSR cap is 30%. It applies to housing loans for HDB flats and Executive Condominiums (ECs) where the EC’s minimum occupation period has not expired, including new ECs purchased from developers.
MSR = Monthly property loan repayments ÷ Gross monthly income × 100%
Illustration: If your combined gross monthly income recognised for assessment is S$10,000, the 30% cap gives an assessed mortgage repayment ceiling of S$3,000 per month, assuming no other property loan repayments.
We use this as an initial planning check. It does not establish the loan amount your lender will approve or the repayment level that best suits your household.
2. What Is TDSR?
TDSR measures the proportion of your gross monthly income used to service all monthly debt obligations, including the proposed housing loan.
The general TDSR threshold for property loans granted by financial institutions is 55%, subject to applicable rules and exemptions. Debt obligations can include housing loans, car loans, personal loans and credit card commitments.
TDSR = Total monthly debt repayments ÷ Gross monthly income × 100%
Illustration: With recognised gross monthly income of S$10,000, a 55% threshold allows total assessed monthly debt repayments of S$5,500.
If your other assessed monthly debt repayments total S$1,500, the remaining capacity for the proposed housing loan would be S$4,000 per month under TDSR alone.
We would then check whether MSR or other lending requirements further restrict your borrowing.
Which Rules Apply to My Purchase?
| Purchase and financing | MSR cap | TDSR threshold |
|---|---|---|
| HDB flat with an HDB loan | 30% | Not applicable |
| HDB flat with a bank loan | 30% | 55% |
| New EC from a developer, with a bank loan | 30% | 55% |
| Private condominium or landed home, with a bank loan | Generally not applicable | 55% |
These are the general rules for typical new-purchase situations. Refinancing, exemptions and individual circumstances require separate assessment.
3. What Happens When Both Limits Apply?
When both MSR and TDSR apply, your proposed loan must satisfy both assessments. We check which limit leaves less room for your mortgage repayment.
Using the earlier income example:
| Assessment | Other monthly debts: S$1,500 | Other monthly debts: S$3,000 |
|---|---|---|
| Recognised gross monthly income | S$10,000 | S$10,000 |
| Mortgage repayment ceiling under MSR | S$3,000 | S$3,000 |
| Total debt repayment ceiling under TDSR | S$5,500 | S$5,500 |
| Remaining mortgage repayment capacity under TDSR | S$4,000 | S$2,500 |
| Indicative mortgage repayment ceiling after both checks | S$3,000 | S$2,500 |
| More restrictive measure | MSR | TDSR |
In the first scenario, MSR is more restrictive. In the second, higher existing debt repayments make TDSR more restrictive.
These are simplified calculations. They assume no other property loan commitments and that the stated income is fully recognised for assessment. They do not confirm your eligibility or approved loan amount.
Our analysis: Existing debts can reduce your housing loan capacity even when your income remains unchanged. We therefore review your debt commitments alongside your property budget.
4. Why These Calculations Do Not Confirm Your Maximum Loan
A monthly repayment ceiling and an approved loan amount are different measures.
Your lender must also assess factors such as:
The loan tenure.
The interest rate used for affordability assessment.
Your recognised income.
Your existing debts and credit profile.
The property’s valuation and applicable Loan-to-Value (LTV) limit.
These factors affect how much you can borrow.
We therefore use online calculations to explore possible budgets. Before you commit, we encourage you to obtain a financing assessment and ask your lender to explain its assumptions and approval conditions.
5. How We Help You Prepare Before Buying
Our suggested preparation process is:
Confirm your property and loan type.
Establish which financing rules apply to your intended purchase.Prepare your income documents.
Ask your lender how much income it will recognise, particularly if you receive commissions, bonuses or variable earnings.List your existing debts.
Include monthly repayments and outstanding credit commitments so your assessment reflects your financial position.Obtain an early financing assessment.
For an HDB purchase, apply for your HDB Flat Eligibility (HFE) letter. For bank financing, seek an In-Principle Approval and check its conditions. A valid HFE letter is required before you obtain an Option to Purchase for a resale HDB flat.Check your upfront funding.
Budget for the down payment, stamp duties, legal fees and other purchase expenses. Confirm how much cash and eligible CPF savings you can use.Set a comfortable monthly budget.
Allow for living expenses, family responsibilities, savings and emergencies. We also suggest testing how your budget would cope with lower income or higher repayments.
6. Our View: A Loan Limit Is Not a Spending Target
We believe your property budget should reflect your circumstances and priorities, alongside the financing available to you.
Our priority is to help you assess whether the monthly commitment fits your lifestyle, family responsibilities and longer-term plans. In our view, a manageable purchase should leave you with financial breathing room.
When reviewing your options, we encourage you to ask:
“If our circumstances change, can we still manage this home comfortably?”
Let’s Review Your Property Budget
If you are unsure how MSR and TDSR affect your purchase, we can help you organise your budget and identify the financing questions to confirm with your lender before shortlisting properties.
Disclaimer
This website is independently managed by Albert Leow (CEA Reg. No. R012699G), a registered real estate salesperson with Huttons Asia Pte Ltd, and is not the developer’s official website.
All information, including project details, prices, floor plans, images and availability, is provided for general reference only and may change without prior notice. While reasonable care is taken to ensure accuracy, no guarantee is made regarding the completeness or reliability of the information.
Images and illustrations are for reference only. Interested buyers should verify all details against the developer’s latest official information before making any purchase decision.
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