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Mortgage Calculator — Singapore 2026
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Quick answer: A $750,000 mortgage at 3.5% over 25 years costs $3,753/month. You'll pay about $375,800 in total interest over the full tenure. At the MAS 4% stress test rate, the same loan would cost $3,956/month.
Next step: Know the monthly payment. But will the bank approve? Check your TDSR.
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How Mortgage Payments Work in Singapore
Your monthly mortgage payment is calculated using the standard amortization formula. Each payment is split between interest (what the bank charges) and principal (actually paying down your loan). In the early years, most of your payment goes to interest. Over time, the split gradually shifts toward principal.
Singapore mortgages use floating rates pegged to SORA (Singapore Overnight Rate Average) plus a bank spread. Rates change — typically every 3 months. As of early 2026, 3-month compounded SORA sits below 1%, making typical home loan packages around 2-3% all-in.
The MAS requires banks to stress-test your loan at 4% p.a. for TDSR calculations, regardless of the actual rate. Your total monthly debt payments (including the stress-tested mortgage) cannot exceed 55% of your gross monthly income.
Key Rates (Feb 2026)
| Rate | Current | Notes |
|---|---|---|
| HDB Concessionary | 2.6% | Fixed, pegged to CPF OA rate + 0.1% |
| Bank Home Loan | 2.0 – 3.5% | Variable, SORA-pegged packages |
| MAS Stress Test | 4.0% | Used for TDSR calculation |
| TDSR Cap | 55% | Max debt-to-income ratio |
HDB Loan vs Bank Loan
| HDB Loan | Bank Loan | |
|---|---|---|
| Rate | 2.6% (fixed) | ~2-3% (variable) |
| Max LTV | 80% | 75% |
| Down Payment | 20% (all CPF OK) | 25% (5% must be cash) |
| Rate Risk | None — rate is fixed | SORA fluctuations |
| Best For | Stability seekers | Rate-savvy borrowers |
Quick Examples
| Loan | Rate | Tenure | Monthly |
|---|---|---|---|
| $500K | 2.6% | 25 yrs | $2,268 |
| $750K | 3.5% | 25 yrs | $3,753 |
| $1M | 3.5% | 30 yrs | $4,490 |
| $1.2M | 3.0% | 25 yrs | $5,687 |
FAQ
How much is the monthly mortgage for a $750,000 loan in Singapore?
At 3.5% interest over 25 years, a $750,000 loan costs about $3,753/month. Total interest paid over the full tenure is approximately $375,800 — meaning you pay back about $1.13M in total.
What is the MAS stress test rate and why does it matter?
The MAS (Monetary Authority of Singapore) requires banks to assess your loan eligibility at a stress test rate of 4% p.a., regardless of the actual interest rate offered. This means even if your bank offers 2.5%, your TDSR is calculated as if you're paying 4%. This protects borrowers from rate hikes.
Should I take an HDB loan or a bank loan?
HDB loans charge 2.6% p.a. (fixed) and allow up to 80% LTV. Bank loans currently offer lower rates (around 2-3%) but are variable — they can rise with SORA. HDB loans are more stable; bank loans are cheaper short-term but carry rate risk. If you can handle rate fluctuations, bank loans save money. If you want certainty, HDB loans are safer.
What is TDSR and how does it affect my mortgage?
TDSR (Total Debt Servicing Ratio) caps your total monthly debt obligations at 55% of your gross monthly income. This includes your mortgage, car loan, credit card minimum payments, and any other debts. Banks use the 4% stress test rate to calculate your mortgage portion of TDSR — not the actual rate you're paying.
Related Tools & Guides
- TDSR Guide Singapore — how the 55% cap affects your borrowing power
- HDB Loan vs Bank Loan — which one saves you more money
- HDB to Condo Affordability Calculator — find your max condo budget after HDB sale
- Stamp Duty Calculator — BSD + ABSD breakdown for any property purchase
- How Much Cash to Buy a Condo — the full cost picture beyond just the mortgage
Last updated Feb 2026. This is an estimate — not financial advice. Actual rates vary by bank and package. Consult your bank for exact quotes.