HDB Affordability Calculator Singapore 2026
Check your MSR and TDSR eligibility before applying for an HDB flat — free calculator with real-time results in SGD.
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Understanding HDB Affordability for Singapore Buyers
For most Singaporeans, buying an HDB flat is the single largest financial commitment of their lives. With resale flat prices averaging S$560,000–S$730,000 for 4-room flats in 2026, and Build-to-Order (BTO) prices ranging from S$200,000 to over S$650,000 in prime locations, understanding what you can realistically afford before committing is essential. The Monetary Authority of Singapore (MAS) regulates affordability through two key ratios: the Mortgage Servicing Ratio (MSR) and the Total Debt Servicing Ratio (TDSR). This calculator checks both in real time, giving you a clear picture of your eligibility before you apply.
Not financial advice. All figures are for educational reference only. Data current as at Q2 2026 unless noted. Please consult a licensed financial adviser for personalised guidance.
The Mortgage Servicing Ratio (MSR) Framework
The MSR is a macro-prudential measure introduced by MAS in 2013 that caps your monthly mortgage repayment at 30% of your gross monthly income for HDB flat purchases. It applies exclusively to HDB flats — not private property. The purpose is to ensure buyers do not overextend on housing at the expense of retirement savings. For example, if your combined household income is S$8,000 per month, your maximum monthly HDB repayment is S$2,400. The MSR stress test for bank loans uses a 4% interest rate floor, even if your actual rate is lower — this is worth factoring into your planning.
The Total Debt Servicing Ratio (TDSR) Framework
The TDSR caps total monthly debt obligations — including the mortgage, car loan, personal loans, and minimum credit card payments — at 55% of gross monthly income. Unlike MSR, TDSR applies to all property loans (HDB and private). If you have a car loan of S$800 per month and a personal loan of S$400 per month, that S$1,200 of existing debt eats directly into your TDSR headroom. Buyers who are debt-free often find TDSR is not a constraint, but for those with vehicle financing, it can reduce the maximum loan amount significantly. Use this calculator’s “Other Monthly Debt” field to check your TDSR with existing obligations factored in.
How to Use This HDB Affordability Calculator
- Enter monthly gross income: Use your combined household income if applying as a couple. This is your pre-tax salary before CPF deductions.
- Enter the HDB loan amount: Typically the flat purchase price minus your CPF savings, grants, and cash down payment. HDB loans go up to 80% of the flat’s purchase price or value (whichever is lower).
- Set the loan tenor: HDB loans allow up to 25 years, while bank loans on HDB flats allow up to 30 years (subject to age restrictions — the tenor cannot extend beyond 65 years of age for the youngest borrower).
- Choose loan type: The HDB concessionary loan rate is fixed at 2.6% p.a. (CPF OA rate of 2.5% + 0.1%). Bank loans are variable/fixed; 3.5% p.a. is a representative current rate for 2026.
- Add other monthly debt obligations: Include your car loan instalment, personal loan repayment, and minimum credit card payments for an accurate TDSR calculation.
The calculator shows your monthly repayment, MSR ratio, TDSR ratio, and the maximum loan you can afford under the 30% MSR rule — all updated instantly as you adjust the sliders.
Pro tip: Use this alongside our CPF Housing Grant Calculator to factor in your EHG and Family Grant eligibility, which directly reduces your loan amount.
Contents — Click to Expand
What Is HDB Affordability?
HDB affordability refers to whether your household income and savings are sufficient to purchase and service a Housing Development Board flat in Singapore without financial strain. The HDB and MAS assess affordability through a combination of down payment capacity, monthly repayment ratios, and debt obligations. In 2026, an average 4-room resale HDB flat in mature estates like Bishan, Toa Payoh, or Queenstown costs between S$650,000 and S$850,000, while newer BTO flats in non-mature estates are priced from S$250,000 to S$480,000 depending on flat size and location.
For an HDB loan, you can borrow up to 80% of the flat’s purchase price or market valuation (whichever is lower). This means buying a S$500,000 resale flat with an HDB loan requires a minimum 20% down payment of S$100,000 — which can be fully paid using CPF OA savings. Bank loans allow up to 75% LTV for HDB flats, requiring a 25% down payment, of which at least 5% must be in cash. Here is a quick comparison:
| Item | HDB Loan | Bank Loan |
|---|---|---|
| Max LTV | 80% | 75% |
| Min Down Payment | 20% (CPF OK) | 25% (5% cash) |
| Max Tenor | 25 years | 30 years |
| Interest Rate (2026) | 2.6% p.a. (fixed) | ~3.0–3.8% p.a. |
How MSR and TDSR Are Calculated: The Maths Behind Affordability
The MSR and TDSR use the same underlying formula — your monthly repayment as a percentage of gross income — but applied to different loan scopes.
MSR Formula: MSR (%) = (Monthly Mortgage Repayment ÷ Gross Monthly Income) × 100
TDSR Formula: TDSR (%) = (Total Monthly Debt Obligations ÷ Gross Monthly Income) × 100
Let’s use a worked example. A couple with combined income of S$9,000 per month wants to buy a S$560,000 resale flat with an HDB loan at 2.6% p.a. over 25 years. They have a car loan costing S$900/month.
- Loan amount: S$560,000 × 80% = S$448,000
- Monthly repayment: S$2,024
- MSR: 2,024 ÷ 9,000 = 22.5% ✅ (below 30%)
- TDSR: (2,024 + 900) ÷ 9,000 = 32.5% ✅ (below 55%)
For bank loans, MAS applies a stress test — even if your bank rate is 3.0%, the TDSR calculation uses a minimum floor rate of 4.0%. For HDB concessionary loans, the actual rate of 2.6% is used without a floor. This makes HDB loans more accessible for first-time buyers with moderate incomes. You can verify both scenarios with the calculator above by switching the loan type selector.
HDB Loan vs Bank Loan: Which Is More Affordable in 2026?
The choice between an HDB loan and a bank loan affects not just your monthly repayment but your total interest paid over the loan life. The HDB concessionary loan at 2.6% p.a. is currently the cheaper option compared to most bank packages in 2026. However, the 25-year cap on HDB loan tenor (vs 30 years for bank loans) means monthly repayments are slightly higher on the same loan amount.
For a S$400,000 loan at the respective rates over their maximum tenors:
| Loan Type | Rate | Tenor | Monthly | Total Interest |
|---|---|---|---|---|
| HDB Concessionary | 2.6% | 25 yrs | S$1,812 | S$143,600 |
| Bank Loan (3.5%) | 3.5% | 30 yrs | S$1,796 | S$246,560 |
The bank loan has a slightly lower monthly payment due to the longer tenor, but costs S$102,960 more in total interest. On the other hand, bank loans offer greater flexibility — you can refinance to better rates, and some packages offer fixed-rate periods that provide short-term certainty. Use our HDB Loan vs Bank Loan Calculator to compare your specific situation in detail.
Using CPF OA to Service Your HDB Loan
One of Singapore’s unique advantages is the ability to use CPF Ordinary Account (OA) savings — which earns 2.5% p.a. — to pay both the down payment and monthly mortgage instalments on an HDB flat. For employees under 35, the CPF contribution rate to OA is roughly 23% of gross salary (combined employer and employee shares), meaning CPF OA accumulates quickly enough to cover a significant portion of HDB loan repayments without touching take-home pay.
However, there is an important catch: the Valuation Limit (VL). Once you have used your CPF savings and the remaining outstanding loan together exceed the flat’s original purchase price, you can only continue using CPF if you set aside the prevailing Full Retirement Sum (FRS) in your CPF. This typically becomes a concern for flats with shorter remaining leases. If you are buying an older resale flat, plan for the possibility of paying cash for later instalments.
The interaction between CPF usage and retirement savings is a key planning consideration. Every dollar used from CPF OA for housing reduces the balance that could have compounded to fund your retirement. Use our CPF OA/SA Allocation Calculator to model the trade-off between housing and retirement savings.
HDB Grants That Boost Your Affordability in 2026
The Singapore government provides substantial grants to help first-time buyers and lower-income families afford HDB flats. These grants directly reduce the purchase price and, therefore, the loan amount you need. Here are the key grants available in 2026:
| Grant | Max Amount | Eligibility |
|---|---|---|
| Enhanced CPF Housing Grant (EHG) | S$80,000 | First-timers, household income ≤ S$9,000/mth |
| Proximity Housing Grant (PHG) | S$30,000 | Buying within 4km of parents/children |
| Family Grant (Resale) | S$80,000 | First-timer family buying resale flat |
| Singles Grant (Resale) | S$40,000 | First-timer single buying 2–5 room resale flat |
A couple with income of S$7,000/month buying their first resale flat near parents could qualify for S$80,000 (Family Grant) + S$30,000 (PHG) = S$110,000 in grants, directly reducing their loan from S$450,000 to S$340,000. At 2.6% over 25 years, that reduces the monthly repayment from S$2,037 to S$1,540 — a S$497/month saving. Use our CPF Housing Grant Calculator to estimate the exact grants you qualify for.
HDB Affordability and Long-Term Retirement Planning
Housing and retirement are deeply intertwined in Singapore because CPF funds both. Overstretching on an HDB flat today — particularly a large resale flat in a prime mature estate — can meaningfully reduce the CPF balance available at age 55 for the Retirement Account (RA), which funds CPF LIFE payouts in your 60s and beyond.
The prudent approach is to treat the MSR limit not just as a compliance threshold but as a genuine financial guideline. Many experienced Singapore investors prefer to target a monthly repayment well below 25% of income (rather than the maximum 30%), leaving more room for savings, investments, and emergencies. A flat that is affordable today should remain comfortable if one partner’s income reduces due to caregiving, career breaks, or health events.
For those in their 30s and 40s buying their first or second property, we recommend running the Retirement Planning Calculator in parallel — it models how much you need to retire at your target age and income level. Check that your projected CPF balance at 65 (factoring in housing CPF withdrawals and accrued interest) still meets the Full Retirement Sum. If it doesn’t, consider a smaller flat, a longer saving period, or supplementary investments via Syfe or Endowus to bridge the retirement gap.
Frequently Asked Questions
What is the MSR limit for HDB flats in Singapore?
The Mortgage Servicing Ratio (MSR) for HDB flats is capped at 30% of the borrower’s gross monthly income. For example, if your household earns S$8,000 per month, your maximum monthly HDB mortgage repayment is S$2,400. The MSR applies only to HDB flat purchases — it does not apply to private residential property loans. This limit was implemented by MAS in 2013 as a macro-prudential measure to prevent over-leveraging in public housing.
How is TDSR calculated for Singapore property loans?
The Total Debt Servicing Ratio (TDSR) is calculated as your total monthly debt obligations divided by your gross monthly income, expressed as a percentage. Total debt includes your mortgage repayment plus all other recurring debt — car loan instalments, personal loan repayments, student loans, and minimum credit card payments. Since 2022, the TDSR threshold is 55%. For bank loans, a stress test rate (minimum 4% p.a.) is applied even if your actual rate is lower.
Can I use CPF savings to pay my monthly HDB loan instalment?
Yes. CPF Ordinary Account (OA) savings can be used to service monthly instalments on both HDB loans and bank loans for HDB flat purchases. Many buyers cover their full monthly repayment from CPF OA, especially in their 30s when OA contributions are highest (about 23% of gross salary for those under 35). However, once the total CPF used plus outstanding loan exceeds the flat’s original purchase price, continued CPF usage requires setting aside the prevailing Full Retirement Sum in your CPF accounts.
How much should I earn to afford a S$500,000 HDB flat in Singapore?
For a S$500,000 HDB flat with an 80% HDB loan (S$400,000) at 2.6% over 25 years, the monthly repayment is approximately S$1,812. Under the 30% MSR rule, you need a gross monthly income of at least S$6,040. For a couple, that means a combined income of around S$6,000–S$6,500 per month — well within reach for a dual-income household earning median wages. Factor in grants such as the Enhanced CPF Housing Grant (up to S$80,000) to reduce the required loan amount further.
What is the maximum HDB loan I can borrow in Singapore?
The maximum HDB loan is the lower of: (a) 80% of the flat’s purchase price or assessed value (whichever is lower), or (b) the amount that keeps your monthly repayment within the 30% MSR limit given your income. If your income is S$6,000/month, your maximum monthly repayment is S$1,800. At 2.6% over 25 years, this corresponds to a maximum loan of approximately S$396,000. Our calculator’s “Max Affordable Loan” output computes this automatically based on the MSR 30% rule.
What HDB grants can help improve my affordability in 2026?
First-time HDB buyers in 2026 may qualify for multiple grants: the Enhanced CPF Housing Grant (EHG) of up to S$80,000 for households earning ≤ S$9,000/month; the Proximity Housing Grant (PHG) of up to S$30,000 for buying near parents or married children; and the Family Grant of up to S$80,000 for resale flat purchases. These grants are credited to your CPF OA and directly reduce the loan amount needed, lowering both the monthly repayment and total interest paid. Use the CPF Housing Grant Calculator to estimate your eligibility.
Does the MSR limit apply to private property in Singapore?
No. The 30% Mortgage Servicing Ratio (MSR) cap applies only to HDB flat loans (HDB concessionary and bank loans for HDB properties). For private property purchases — condominiums, executive condominiums (ECs) after their 5-year Minimum Occupation Period (MOP), and landed property — only the TDSR of 55% applies. This is why many private property buyers with high incomes can take larger loans relative to income compared to HDB buyers.
What happens if I fail the MSR or TDSR check when buying an HDB flat?
If your MSR exceeds 30% or your TDSR exceeds 55%, your HDB loan application or bank loan application will be rejected. Your options are: (1) reduce the loan amount by increasing the down payment using CPF OA savings or cash; (2) increase household income by including a co-borrower; (3) reduce other debts to lower the TDSR — paying off a car loan before applying can significantly improve eligibility; (4) opt for a less expensive flat. HDB officers can also advise on recalculation if your income changes.
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