Singapore TDSR Calculator
Calculate your Total Debt Servicing Ratio and check property loan eligibility under MAS guidelines
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Singapore TDSR Calculator: Check Your Property Loan Eligibility Instantly
Planning to purchase property in Singapore? Understanding your Total Debt Servicing Ratio (TDSR) is essential before approaching any financial institution for a home loan. The TDSR framework, introduced by the Monetary Authority of Singapore (MAS) in 2013, ensures that borrowers do not overextend themselves financially when taking on property-related debt. Our Singapore TDSR Calculator helps you determine your borrowing capacity and assess whether you meet the 55% threshold required for loan approval.
What is Total Debt Servicing Ratio (TDSR)?
The Total Debt Servicing Ratio is a measure that financial institutions use to assess your ability to service all debt obligations, including the property loan you are applying for. Unlike the Mortgage Servicing Ratio (MSR), which only considers housing loan repayments, TDSR takes into account your entire debt profile. This includes car loans, personal loans, credit card outstanding balances, student loans, renovation loans, and any other secured or unsecured borrowings.
MAS introduced this framework to strengthen credit underwriting practices among financial institutions and encourage financial prudence among borrowers. The regulation aims to ensure long-term sustainability in the property market by preventing over-leveraging. When you apply for a property loan, the bank must calculate your TDSR and ensure it does not exceed 55% of your gross monthly income.
As of 2025, the TDSR cap remains at 55% of gross monthly income. This means your total monthly debt repayments, including your new mortgage, cannot exceed 55% of your gross monthly income before tax.
How Does TDSR Differ from MSR?
While both TDSR and MSR are loan affordability measures implemented by MAS, they serve different purposes and apply to different property types. The Mortgage Servicing Ratio applies specifically to HDB flats and Executive Condominiums purchased directly from developers, with a cap of 30% of gross monthly income. TDSR, on the other hand, applies to all property loans and considers your total debt burden.
For HDB flat purchases and Executive Condominiums, you must satisfy both MSR and TDSR requirements. This means your monthly housing loan repayment alone cannot exceed 30% of your income (MSR), and your total monthly debt obligations including the housing loan cannot exceed 55% of your income (TDSR). For private property purchases, only TDSR applies.
Components of Monthly Debt Obligations
Understanding what counts towards your monthly debt obligations is crucial for accurate TDSR calculation. Financial institutions consider all outstanding debt obligations when computing your TDSR, not just property-related loans. Here is a comprehensive breakdown of what gets included in the calculation.
Property-related loans include the mortgage you are applying for, any existing home loans, and loans secured against property. Car loans and hire purchase agreements contribute to your monthly obligations. Credit card outstanding balances are calculated based on the minimum payment required or a percentage of the outstanding amount. Personal loans, whether secured or unsecured, add to your debt burden. Student loans, renovation loans, and any revolving credit facilities are also factored into the calculation.
For credit card debt, banks typically use 3% to 5% of your outstanding balance as the assumed monthly repayment when calculating TDSR. Even if you pay your cards in full each month, the credit limit may still impact your TDSR if you carry any balance.
Stress Test Interest Rate Explained
When calculating your monthly property loan instalments for TDSR purposes, banks do not use the current interest rate you will be paying. Instead, they apply a stress test interest rate to ensure you can still afford repayments even if rates increase. As of September 2022, MAS increased this medium-term interest rate floor from 3.5% to 4% per annum.
Banks must use the higher of the medium-term interest rate floor (currently 4%) or the thereafter interest rate of your loan package when calculating your monthly repayment for TDSR assessment. This conservative approach protects borrowers from potential financial stress if interest rates rise during the loan tenure. The stress test rate applies only to the property loan being applied for, not to existing property loans in your TDSR calculation.
How Variable Income Affects TDSR
Not everyone receives a fixed monthly salary. If your income includes variable components such as commissions, bonuses, allowances, or rental income, financial institutions must apply a haircut of at least 30% to these amounts. This means only 70% of your variable income counts towards your gross monthly income for TDSR calculation.
Self-employed individuals and freelancers face similar treatment, with only 70% of their declared income being considered. This conservative approach accounts for the inherent uncertainty in variable income streams. If your income fluctuates significantly month to month, banks may average your earnings over a longer period or use more conservative estimates.
Michelle, a freelancer, earns S$7,000 monthly with an existing car loan of S$1,000.
Eligible Income = 70% x S$7,000 = S$4,900
Maximum Total Debt = 55% x S$4,900 = S$2,695
Available for Housing = S$2,695 - S$1,000 = S$1,695
Michelle can afford a maximum monthly mortgage payment of S$1,695.
Using Financial Assets to Improve TDSR
If your TDSR exceeds 55% based on income alone, you may be able to include certain financial assets to boost your effective income. MAS allows financial institutions to add a portion of eligible financial assets to your gross monthly income, subject to a minimum haircut of 30%. These assets must be liquid and can include fixed deposits, stocks, bonds, unit trusts, and other investment products.
The asset inclusion works by converting your pledged or unpledged assets into an equivalent monthly income stream. For pledged assets (those offered as collateral to the bank), a smaller haircut may apply. For unpledged assets, banks typically apply the 30% minimum haircut. This flexibility allows borrowers with substantial savings but lower income to qualify for loans they might otherwise be denied.
For unpledged assets used in TDSR computation, banks must verify that these assets are still in your account before disbursing the loan. Assets used for downpayment cannot be counted towards your TDSR income calculation.
TDSR Exemptions and Special Cases
While TDSR applies broadly to property loans, certain exemptions exist. Owner-occupied residential properties purchased before 29 June 2013 (when TDSR was introduced) may be exempt from the framework when refinancing, provided the loan amount and tenure are not increased. This allows existing homeowners to refinance for better rates without being subject to TDSR requirements that might disqualify them.
Repricing your loan (switching loan packages within the same bank) for owner-occupied homes is generally not subject to TDSR rules if the loan tenure and amount remain unchanged. For investment properties, owners may be exempted if they commit to a debt reduction plan requiring at least 3% principal reduction annually. Loans for non-residential properties such as commercial and industrial units may have different TDSR thresholds.
Impact of Existing Property Loans on TDSR
If you already own property and have an existing home loan, how does this affect your ability to purchase a second property? Generally, your existing mortgage payments must be included in your total monthly debt obligations when calculating TDSR for a new loan. However, MAS provides some relief in specific situations.
If you can demonstrate that the existing property will be sold or the loan fully discharged, the monthly obligations from that property may be excluded from your TDSR calculation. This typically requires showing a sale agreement or evidence of pending discharge. Without such proof, your existing mortgage payments will reduce the amount available for your new property loan, potentially limiting your purchasing power significantly.
Maximum Loan Amount Calculation
Determining your maximum loan amount involves working backwards from the TDSR limit. First, calculate 55% of your gross monthly income to find your maximum allowable monthly debt. Subtract your existing monthly debt obligations from this amount. The remainder represents the maximum monthly payment you can afford for a new property loan.
Converting this monthly payment into a loan amount depends on the interest rate and loan tenure. Using the stress test rate of 4% and your chosen tenure (maximum 30 years for private property, 25 years for HDB), you can determine the principal amount that corresponds to your affordable monthly payment. Online calculators like ours perform these calculations instantly, accounting for all relevant factors.
Strategies to Improve Your TDSR
If your TDSR exceeds 55%, several strategies can help improve your ratio before applying for a property loan. The most direct approach is to reduce existing debts. Paying off car loans, clearing credit card balances, and settling personal loans will free up more capacity for your mortgage. Consider which debts carry the highest monthly obligations relative to their outstanding principal.
Extending the tenure of your proposed loan reduces monthly payments, thereby improving TDSR. However, this comes at the cost of paying more interest over the loan's lifetime. Another option is making a larger downpayment to reduce the loan quantum needed. If you have a co-borrower or guarantor with income, adding them to the application increases total household income available for debt servicing.
Start reviewing your debt profile at least 6 months before planning to purchase property. Clearing unnecessary debts and avoiding new credit commitments will maximise your borrowing capacity under TDSR rules.
Joint Borrower and Guarantor Considerations
Adding a joint borrower can significantly improve your TDSR by pooling income from multiple parties. When two or more individuals apply for a loan together, the bank considers the combined gross monthly income when calculating TDSR. However, the debts of all borrowers are also combined, so adding someone with substantial existing debts may not help.
A guarantor provides additional security but typically does not contribute income to the TDSR calculation unless they become a co-borrower. The guarantor's role is to repay the loan if the primary borrower defaults, but their income is not usually added when determining loan eligibility. If you need to boost income for TDSR purposes, adding a co-borrower rather than a guarantor is more effective.
TDSR and Loan-to-Value Ratio Interaction
TDSR works alongside the Loan-to-Value (LTV) ratio to determine your maximum borrowing amount. While TDSR limits how much you can borrow based on your income and debts, LTV limits how much you can borrow based on the property's value. You must satisfy both requirements, and the lower limit applies.
For example, if TDSR calculations allow you to borrow S$1.2 million but the property is valued at S$1.5 million with an LTV limit of 75%, your maximum loan is S$1.125 million (75% of S$1.5 million). Conversely, if the property is valued at S$2 million (allowing S$1.5 million loan at 75% LTV) but your TDSR only permits S$1 million, then S$1 million becomes your maximum. Always consider both constraints when planning your purchase.
Recent Changes and Updates to TDSR Framework
The TDSR framework has evolved since its introduction in 2013. The most significant recent change occurred in December 2021, when MAS reduced the TDSR threshold from 60% to 55% as part of cooling measures to address rising property prices. This 5-percentage-point reduction means borrowers can now qualify for smaller loans relative to their income.
In September 2022, MAS increased the medium-term interest rate floor from 3.5% to 4% for residential property loans. This adjustment reflected the rising global interest rate environment and ensures that borrowers are stress-tested at higher rates. Together, these changes have reduced maximum loan eligibility, requiring borrowers to have stronger financial positions or make larger downpayments.
Common Mistakes When Calculating TDSR
Many property buyers make errors when estimating their TDSR, leading to disappointment when their loan applications are rejected or approved for lower amounts than expected. One common mistake is using the promotional interest rate instead of the stress test rate when calculating monthly payments. Banks will use 4% or higher, not the 2% to 3% promotional rates advertised.
Another frequent error is forgetting to include all debt obligations. Credit cards, even when paid in full monthly, may still contribute to your TDSR calculation based on outstanding balances or credit limits. Hire purchase agreements, BNPL (Buy Now Pay Later) balances, and guarantor obligations can also affect your ratio. Underestimating your total debt burden leads to unrealistic borrowing expectations.
Review your credit report from Credit Bureau Singapore before applying for a property loan. This report shows all your credit facilities and outstanding balances, which banks will use when calculating your TDSR.
TDSR for Different Property Types
The TDSR framework applies universally to property loans in Singapore, but some nuances exist for different property categories. For HDB flats and Executive Condominiums purchased directly from developers, you must meet both TDSR (55%) and MSR (30%) requirements. The MSR specifically limits the mortgage repayment portion of your debt.
For private condominiums, landed properties, and resale Executive Condominiums, only TDSR applies without the additional MSR constraint. Commercial and industrial property loans may have different TDSR thresholds set by individual financial institutions, typically more stringent than the 55% residential limit. Always confirm the applicable rules for your specific property type before making assumptions about your borrowing capacity.
How Banks Verify Your Information
When you apply for a property loan, banks conduct thorough verification of the income and debt information you provide. They will request supporting documents including payslips, income tax assessments, bank statements, and employment letters. For self-employed individuals, financial statements and business records may be required.
Banks also check your debt obligations through the Credit Bureau Singapore. This centralised database contains records of your credit facilities, outstanding balances, and repayment history across all financial institutions. Any discrepancies between what you declare and what the credit bureau shows will be investigated and could delay or jeopardise your application.
Planning Your Property Purchase with TDSR in Mind
Successful property purchases in Singapore require careful financial planning that accounts for TDSR constraints. Start by calculating your current TDSR to understand your baseline borrowing capacity. Factor in the stress test interest rate, not promotional rates, to get realistic figures. Consider how your income and debts might change before and after the purchase.
If your TDSR is close to the 55% limit, build in some buffer for unexpected changes. Interest rates may rise, income may fluctuate, or new expenses may emerge. A comfortable TDSR of 45% to 50% provides breathing room for life's uncertainties while still allowing you to purchase property within your means. Our calculator helps you model different scenarios and find the optimal balance.
Frequently Asked Questions
Conclusion
Understanding Singapore's Total Debt Servicing Ratio framework is essential for anyone planning to purchase property with a bank loan. The 55% TDSR threshold, combined with the 4% stress test interest rate, determines your maximum borrowing capacity based on your income and existing debts. By calculating your TDSR accurately before approaching banks, you can set realistic expectations and take steps to optimise your borrowing position.
Our Singapore TDSR Calculator provides instant assessment of your loan eligibility, factoring in all relevant variables including the stress test rate, variable income haircuts, and existing debt obligations. Use this tool to plan your property purchase strategically, whether you are buying your first HDB flat, upgrading to a private condominium, or investing in additional properties. With proper preparation and understanding of TDSR rules, you can navigate Singapore's property financing landscape with confidence.