What Stress Test Interest Rate Do Banks Use for TDSR in Singapore?
Banks assess affordability using a higher rate than the headline package rate. That higher test rate can materially cut the loan amount you qualify for.
For Singapore bank home loans, TDSR is assessed using a stressed mortgage rate, not just the advertised package rate. Under MAS rules, residential property loans from banks are assessed at a medium-term interest rate floor of 4% p.a. or the loan's thereafter rate, whichever is higher (the 4% floor has applied since Sep 2022, as of 2026), and individual banks may still apply their own buffers or underwriting assumptions on top. Confirm the current assessment rate with MAS and your bank before you rely on a budget or loan quantum.
Banks do not qualify a home loan using only the headline package rate. For TDSR, they assess affordability at a higher stressed mortgage rate, which raises the assumed monthly instalment and lowers the loan amount you may qualify for.
The key point is simple: the qualification rate is not the payment rate. If you budget off the package rate alone, you can end up shopping above your real financing range. As of 2026, MAS uses a medium-term rate floor of 4% for residential loans in this assessment; verify the current figure on MAS.
What does the stress test interest rate mean in a home loan application?
It is the higher assumed interest rate a bank uses to test affordability for TDSR. It is a qualification rate, not necessarily the rate the borrower will actually pay after disbursement.
Think of the stress test interest rate as the bank’s affordability buffer. The bank is not only asking, “Can you pay the instalment at today’s package rate?” It is also asking, “Can you still carry the loan if repayments are assessed more conservatively?”
That distinction matters because TDSR is an approval test, not a marketing comparison. You may see an attractive package rate in a loan quote, but the bank can still assess affordability using a higher notional rate — a medium-term floor of 4% as of 2026 (verify on MAS).
Short version: the bank prices the loan one way, but qualifies the loan more cautiously. For a broader overview of where this fits within Singapore financing rules, see Singapore Property Loan Rules: TDSR, MSR and LTV Explained.
Why do banks use a stressed rate for TDSR instead of the headline loan rate?
Banks use a stressed rate to build in a buffer against future interest-rate changes and borrower overextension. It is a risk-control tool, not a penalty.
Home loans run for many years, so the bank is not underwriting only for today’s promotional rate. It is underwriting the borrower through a rate cycle.
That is why the stressed rate exists. It helps the bank check whether repayment still looks reasonably affordable under a tougher assumption. If you only look comfortable at the teaser rate, the bank may treat that as too thin a margin.
A plain way to put it: “The advertised rate shows what the package may cost now. The stressed rate is what the bank uses to see whether the loan is still manageable if conditions are less favourable.”
For a consumer-friendly reference on why banks stress mortgage affordability, CNA’s explainer is a useful supporting read. For a broader overview, see How to Calculate TDSR for a Home Loan in Singapore.
What stress test rate do Singapore banks use for TDSR?
Under MAS rules, bank residential property loans are assessed at a medium-term floor of 4% p.a. or the loan’s thereafter rate, whichever is higher (the 4% floor has applied since Sep 2022, as of 2026). Verify the current figure with MAS and confirm the bank's own assessment.
Under MAS rules, residential property loans from banks are assessed at a medium-term interest rate floor of 4% p.a. or the loan’s thereafter rate, whichever is higher. The 4% floor has applied since Sep 2022. (Non-residential property loans use a higher 5% floor.) These are MAS figures as of 2026 and can change, so verify the current floor on MAS.
Treat the 4% figure as the regulatory baseline, not proof that every bank assesses every file identically today.
| Item | What it means in practice |
|---|---|
| MAS framework | Sets the regulatory affordability baseline for eligible bank housing loans |
| Stress test rate | Uses a higher notional rate (a 4% floor as of 2026) than the headline package rate |
| Borrower impact | Higher assessed instalment usually means lower maximum loan quantum |
| Bank variation | Internal underwriting buffers and income treatment can still differ |
A sensible approach: use the MAS 4% floor to understand the concept, then confirm the current bank-specific assessment with the actual lender before settling on a price range. Start with MAS’s TDSR calculation explainer.
Scope note: this article is about bank loan affordability checks. The same explanation does not carry over to HDB-specific financing without separating the rules first. If the frameworks are getting mixed up, see TDSR vs MSR: What's the Difference?. For a broader overview, see What Is In-Principle Approval (IPA) for a Home Loan in Singapore?.
How does the stress test reduce borrowing power?
A higher assumed rate raises the test instalment, which leaves less affordability headroom. Same income, higher assessment rate, smaller approved loan.
The mechanics are straightforward:
- Same income
- Higher stressed rate
- Higher monthly instalment used in the TDSR test
- Less room within the affordability limit
- Lower loan amount approved
This is one of the most common reasons a loan estimate feels "too low" compared with what the package rate suggested.
Typical scenarios:
- A buyer sees a low package rate online and assumes that is also the qualification rate.
- A couple looks comfortable on salary alone, but the bank’s stressed repayment assumption (a 4% floor as of 2026) pulls the approved quantum down.
- A buyer who wants to stretch for a unit near the top of budget finds that the stressed instalment leaves too little room once other debts are included.
Useful line to remember: banks are not only pricing the loan. They are stress-testing repayment capacity. For a broader overview, see How Banks Assess Income for a Home Loan in Singapore.
What parts of a buyer’s finances affect the TDSR result?
TDSR looks at total monthly debt obligations against the gross monthly income the bank accepts, capped at 55%. Both income treatment (variable income is discounted by at least 30%) and existing debts can materially change the result.
It helps to look at both sides of the equation: what income the bank is likely to recognise, and what monthly obligations it must count. Under TDSR, total monthly debt must stay within 55% of gross income (as of 2026; verify on MAS).
Common items that affect the outcome:
- Fixed salary and other stable, verifiable income
- Bonus, commission, overtime, rental income, and self-employed income, which are typically discounted by at least 30% under MAS rules (variable income is averaged over the last 12 months)
- Car loans, personal loans, study loans, and other instalment debt
- Credit card balances and other revolving commitments
- Whether you are buying alone or with a co-borrower
A good headline salary does not automatically translate into a high loan. The bank cares about accepted income, not claimed income, and total debt, not just the new mortgage.
Two practical checks before shortlisting homes:
- Work out what part of your income is fixed versus variable (the variable part is usually haircut by at least 30%).
- Total up all monthly debt obligations, not just existing property loans.
For a deeper breakdown of how income is typically assessed, see How Banks Assess Income for a Home Loan in Singapore. For a bank-side overview of TDSR mechanics, DBS also has a useful TDSR guide. For a broader overview, see TDSR vs MSR: What's the Difference?.
How can you make sense of the gap between the expected and approved loan amount?
The bank approves what fits its affordability rules, not a hoped-for budget. Reset the search range using verified borrowing capacity, not the package rate.
A simple way to frame it: “The bank has assessed the file using its affordability rules and a stressed repayment assumption, so the approved amount reflects what it is comfortable lending, not just what the package rate appears to support.”
The usual reasons the approved amount comes in lower are practical, not mysterious:
- Not all income is counted in full (variable income is discounted by at least 30% under MAS rules)
- Existing debts consume the 55% TDSR headroom
- The mortgage is assessed at a higher stress test rate (a 4% floor as of 2026) than the headline package rate
Then move to action steps:
- Rework a realistic purchase budget
- Check whether any short-term debts can be reduced before reapplying
- Ask the bank whether full documentation could change the view
- Avoid making an offer based on an optimistic estimate alone
For the mechanics, pair this with How to Calculate TDSR for a Home Loan in Singapore.
What is the practical difference between the stress test rate and the actual package rate?
The stress test rate is used to qualify the borrower, while the package rate is the rate attached to the approved loan. They are related, but they are not the same thing.
This is where many buyers get mixed up.
| Item | Stress test rate | Actual package rate |
|---|---|---|
| Main purpose | Affordability screening | Pricing of the loan |
| Used for | TDSR assessment | Instalments after disbursement |
| Main effect | Can reduce borrowing power | Affects what the borrower pays |
| Common misunderstanding | Buyers think this is the payable rate | Buyers think this alone determines approval |
A borrower can therefore be assessed at one rate and pay another. That is normal.
The practical point is simple: do not build your maximum budget off the package rate alone. Use the bank’s assessed affordability range. For help with common loan terms while comparing packages, PropertyGuru’s glossary of housing loan terms is a useful plain-language reference.
What should you watch out for when relying on a banker-generated loan estimate?
Treat any indicative estimate or IPA as a working number, not a final guarantee. The approved amount can still change when the bank reviews full documents, debts, ownership structure, or underwriting assumptions.
This is the main transaction risk. Searching at the edge of an indicative number can leave you overcommitted if the final assessment comes in lower.
Watch for changes in income documents, missed debt obligations, co-borrower structure, or bank assessment assumptions. A safe rule of thumb: use the estimate to guide your search, but keep your offers within the verified comfort range until the full application is assessed. If you are still early in the process, see What Is In-Principle Approval (IPA) for a Home Loan in Singapore?.
How can you prepare before checking loan eligibility?
Collect income, debt, and borrower-structure details first, then sanity-check the target budget using a conservative buffer. That helps avoid showing homes above likely loan capacity.
- ✓Collect gross monthly income details for all intended borrowers.
- ✓Note which income is fixed and which is variable, commission-based, bonus-based, or self-employed (variable income is typically discounted by at least 30% under MAS rules).
- ✓Gather recent loan statements or rough monthly repayments for existing debts, since TDSR caps total debt at 55%.
- ✓Note car loans, personal loans, study loans, and other instalment commitments.
- ✓Check for credit card balances or revolving facilities that may affect affordability.
- ✓Confirm whether the purchase will be under a single borrower or co-borrowers.
- ✓Flag any rental income or side income that may not be fully accepted by the bank.
- ✓Confirm whether you are taking a bank loan or an HDB financing route, so the frameworks do not get mixed up.
- ✓Use a conservative affordability buffer (a 4% stress-test floor as of 2026) instead of the headline package rate.
- ✓Reconfirm the practical budget with the bank before you make an offer.
Will every bank use the same TDSR stress test rate?
No, not exactly. Banks must meet MAS requirements (a 4% floor for residential loans, as of 2026), but their internal underwriting assumptions and income treatment can still differ.
The regulatory framework sets the baseline — a medium-term rate floor of 4% for residential loans, as of 2026 — but banks do not necessarily assess every borrower in exactly the same way. Outcomes can differ because lenders may apply different internal buffers, treat variable income differently, or take a more conservative view of existing debts.
That is why two buyers with similar salaries can still receive different loan estimates across banks. The practical move is simple: do not assume one bank’s indicative number will carry over to another. If you are serious about a purchase, confirm the assessment with the actual lender you plan to use, verify the current floor on MAS, and keep the budget slightly below the top-end estimate until the file is fully reviewed.
Methodology: where these figures come from and what we did not claim
Where every figure comes from — and what we deliberately did not claim.
Verified figures. Financing figures here come from MAS (TDSR/LTV rules) and CPF — as of 2026; loan rules and rates change, so confirm the current limits with MAS and your bank before you rely on them.
What we have not claimed: the loan amount or approval for any specific borrower (check your bank); a rate quote; or financial advice — a practical explainer only.
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Take any point from this analysis and apply it to your own project, budget or decision.
PropKakiFor most buyers this year, staying well within budget beats trying to time the market.