Singapore mortgage affordability checks in 2026 still centre on two ratios: Total Debt Servicing Ratio (TDSR) and Mortgage Servicing Ratio (MSR). TDSR looks at all monthly debt repayments against gross monthly income, while MSR focuses on the housing loan instalment for HDB flats and certain Executive Condominium cases. A borrower can pass one ratio and still be limited by the other, so the practical loan amount depends on income, existing debts, property type, tenure, interest-rate assumptions and the lender’s own credit assessment.
TDSR: 55%
MSR: 30%
HDB / EC Checks
Mortgage Rule Snapshot
Not more than 55% of gross monthly income for total monthly debt obligations, including the proposed property loan.
Not more than 30% of gross monthly income for the monthly housing loan instalment on HDB flats and ECs where the EC minimum occupation period has not expired.
TDSR is the main affordability ratio for private residential bank loans. MSR does not usually apply to private residential purchases.
Both MSR and TDSR can matter. The lower usable monthly repayment figure normally sets the practical cap.
These ratios are not mortgage approval promises. Banks and financial institutions can also assess loan-to-value limits, property valuation, borrower age, loan tenure, credit history, CPF usage, employment income and other debt commitments.
How TDSR Works in Singapore
TDSR Formula
TDSR = Total monthly debt payments ÷ Gross monthly income × 100%
Debt payments can include the new mortgage, existing home loans, car loans, personal loans, credit card debt, renovation loans and other monthly credit obligations assessed by the lender.
What the 55% Cap Means
If gross monthly income is S$8,000, the total debt repayment room under a 55% TDSR cap is S$4,400 per month. Existing debts reduce the space left for the new property loan.
For a borrower comparing a bank mortgage with a public housing loan route, TDSR should be read together with fixed and floating home loans, because the assessed repayment may differ from the headline rate shown in a package advertisement.
How MSR Works for HDB and EC Buyers
MSR Formula
MSR = Monthly mortgage repayment ÷ Gross monthly income × 100%
The MSR check is narrower than TDSR because it looks at the housing instalment for the relevant HDB or EC property, not every debt the borrower has.
What the 30% Cap Means
If gross monthly income is S$6,000, the MSR cap is S$1,800 per month. For an HDB flat or relevant EC, a bank may still need to check TDSR after the MSR figure is calculated.
For buyers deciding between public and bank financing, the loan route can change the affordability checks. The comparison is closely linked to HDB and bank loan differences, especially for downpayment, refinancing flexibility and future interest-rate exposure.
TDSR vs MSR Comparison Table
| Feature | TDSR | MSR | Borrower Check |
|---|---|---|---|
| Full Name | Total Debt Servicing Ratio | Mortgage Servicing Ratio | Use the correct ratio name when comparing bank loan calculations. |
| 2026 Cap | 55% of gross monthly income | 30% of gross monthly income | The lower usable repayment amount can determine the practical loan ceiling. |
| Debt Included | All monthly debt obligations assessed by the lender | Monthly repayment for the relevant housing loan | Credit card balances, car loans and personal loans can reduce TDSR space. |
| Property Scope | Property loans taken from financial institutions | HDB flats and ECs where the EC minimum occupation period has not expired | Private residential purchases normally focus on TDSR, not MSR. |
| HDB Loan Treatment | Not usually shown as applicable in the HDB loan comparison table | Applies at 30% | Use HDB’s current HFE and loan assessment for the actual amount. |
| Bank Loan for HDB Flat | Applies at 55% | Applies at 30% | Both ratios can limit the loan; the bank will also assess LTV and tenure. |
| Practical Effect | Existing debts reduce the available monthly mortgage amount | Housing instalment is capped even if the borrower has little other debt | Run both calculations before committing to a purchase budget. |
No matching rows found.
Ratio Caps as a Monthly Income Share
| Ratio | Monthly Income Share | Plain-English Meaning |
|---|---|---|
| TDSR | 55% | Total monthly debt repayments should not exceed this share of gross monthly income. |
| MSR | 30% | The relevant housing loan instalment should not exceed this share of gross monthly income. |
Which Rule Applies by Property and Loan Type
| Property / Loan Case | TDSR | MSR | Practical Note |
|---|---|---|---|
| Private residential property with bank loan | Applies at 55% | Usually not applicable | The bank still checks LTV, age, tenure, income documents and credit commitments. |
| HDB flat with HDB housing loan | Not usually applicable under the HDB comparison table | Applies at 30% | HDB’s HFE and credit assessment determine the final loan amount. |
| HDB flat with bank loan | Applies at 55% | Applies at 30% | Borrowers should test both ratios before comparing bank packages. |
| Executive Condominium where MOP has not expired | Can apply when financed by a financial institution | Applies at 30% | Check the project stage, MOP status and lender treatment before relying on estimates. |
| Owner-occupied refinancing | May be assessed under specific MAS and lender rules | Depends on property and loan case | Refinancing and repricing are not the same; compare lock-in, legal costs and clawback terms. |
No matching rows found.
Borrowers comparing a new package after the lock-in period should separate affordability rules from bank package mechanics. A repayment estimate can look acceptable under the ratios but still carry refinancing costs, so it is useful to review mortgage repricing and refinancing before switching.
Static TDSR and MSR Examples
The examples below are simplified monthly calculations. They do not include CPF usage limits, bank stress-rate assumptions, valuation checks, legal fees, stamp duties, insurance, credit scoring or any bank-specific approval rule.
| Gross Monthly Income | Existing Monthly Debts | TDSR Room at 55% | Remaining TDSR Room | MSR Cap at 30% | Likely Ratio Cap for HDB / EC |
|---|---|---|---|---|---|
| S$5,000 | S$600 | S$2,750 | S$2,150 | S$1,500 | S$1,500 before other checks |
| S$6,000 | S$0 | S$3,300 | S$3,300 | S$1,800 | S$1,800 before other checks |
| S$8,000 | S$1,200 | S$4,400 | S$3,200 | S$2,400 | S$2,400 before other checks |
| S$12,000 | S$3,000 | S$6,600 | S$3,600 | S$3,600 | S$3,600 before other checks |
Do not use these sample numbers as a loan offer. A lender may use a different assessed instalment because of tenure, income type, interest-rate floor, co-borrower details, existing credit facilities or internal credit standards.
What Banks and HDB May Review
Income Evidence
Fixed salary, variable income, self-employed income, rental income and overseas income may be treated differently. The bank may ask for payslips, CPF contribution records, tax documents or bank statements.
Existing Credit
Credit cards, personal loans, renovation loans, car loans and other property loans can reduce the monthly room left under TDSR. Borrowers considering other credit should compare the effect with personal loans and credit lines.
Loan Tenure
A longer tenure can reduce the monthly instalment, but may raise total interest paid and can affect loan-to-value treatment when age and maximum tenure limits are considered.
Interest-Rate Assumption
For private financial institution property loans, the assessment can use a regulatory medium-term interest rate floor or the thereafter rate, rather than only the promotional rate shown at application.
Property Valuation
The loan amount is not based only on income ratios. A lower valuation, cash-over-valuation for resale HDB flats or loan-to-value limits can raise the cash or CPF amount needed.
Loan Purpose
Purchase, refinancing, repricing, equity withdrawal, bridging finance and renovation finance may be assessed under different bank product rules. Buyers using short-term property funding should also review bridging loan basics.
How TDSR and MSR Differ From LTV
TDSR and MSR test monthly repayment ability. Loan-to-value limits test how much of the property value or price can be financed. A borrower may pass TDSR and MSR but still need more cash or CPF because the LTV cap is lower than expected.
| Rule | What It Measures | What Can Reduce the Loan Amount |
|---|---|---|
| TDSR | Total monthly debt repayment as a share of gross monthly income | Existing debts, assessed interest rate, shorter tenure or lower recognised income |
| MSR | Monthly housing instalment as a share of gross monthly income | HDB or EC property type, loan tenure, assessment rate or income recognition |
| LTV | Loan amount as a share of property value or price | Outstanding housing loans, long tenure, borrower age, property valuation or policy limits |
For a wider mortgage planning view, compare affordability ratios with early repayment penalties, especially where the loan has a lock-in period or subsidy clawback terms.
What to Check Before a Mortgage Application
Include the new mortgage estimate, other property loans, car loan, renovation loan, personal loan, credit card minimum payment and any other monthly credit obligation.
Do not assume every income source will be counted at face value. Ask the bank how it treats bonuses, commissions, rental income and self-employed income.
For HDB flats and applicable ECs, calculate MSR first, then test whether total monthly debt still fits within TDSR if a bank loan is used.
Even when the monthly ratio looks acceptable, LTV limits, valuation gaps, stamp duties and legal costs can change the upfront amount needed.
Interest rate type, repricing fees, lock-in period and early repayment conditions affect the cost after approval. This is separate from passing TDSR or MSR.
Applicants planning renovation spending after purchase should avoid treating the full TDSR space as mortgage room. A later renovation loan, card balance or credit line can affect cash flow even if it was not part of the first home loan estimate. For renovation finance context, see renovation loan expectations.
Verification Notes
For official checks, use the MAS overview of MSR and TDSR rules, the MAS TDSR explainer, the MoneySense property affordability page, the HDB credit to finance a flat purchase page and the CPF mortgage calculator.
Rules, rates, assessment floors and product terms can change. Check the current official pages and the bank’s Residential Property Loan Fact Sheet before signing a loan letter of offer.
FAQ
Is TDSR still 55% in Singapore in 2026?
Yes. Public official materials continue to show the TDSR threshold as 55% of gross monthly income for total monthly debt commitments, subject to detailed MAS and lender rules.
Is MSR still 30% in Singapore in 2026?
Yes. MSR is shown as 30% of gross monthly income for HDB flats and EC cases where the EC minimum occupation period has not expired.
Do private property buyers need MSR?
Private residential buyers usually focus on TDSR, LTV, tenure and bank credit assessment. MSR is mainly linked to HDB flats and relevant EC cases.
Can I pass MSR but fail TDSR?
Yes. This can happen for an HDB or EC buyer with other debt commitments. The housing instalment may fit under 30% MSR, while total debt repayments exceed the 55% TDSR cap.
Does TDSR decide the final home loan amount?
No. TDSR is one affordability check. The final loan amount can also be affected by LTV rules, valuation, age, tenure, income recognition, credit records and the lender’s product terms.
