Singapore Mortgage Calculator: Estimate HDB & Bank Loan Monthly Payments
Use our Singapore Mortgage Calculator to compare HDB Loan and Bank Loan payments, CPF usage, BSD, ABSD, monthly repayments, and total property costs.
Buying a home in Singapore involves more than finding a property and comparing interest rates. Buyers must consider whether they qualify for an HDB Loan or need a Bank Loan, how much of the purchase can be funded through CPF Ordinary Account (OA) savings, and how Buyer’s Stamp Duty (BSD) or Additional Buyer’s Stamp Duty (ABSD) changes the upfront commitment. Maintenance fees, property tax, insurance-related costs and future rate changes also affect affordability.
The free Singapore Mortgage Calculator from aicalcory.com brings these factors into one planning view. Enter the property price, initial contribution, mortgage rate, loan term and loan type to estimate the monthly repayment, total interest, total repayment and expected completion date. Additional inputs help illustrate CPF usage, stamp duties and recurring property expenses.
This Singapore Home Loan Calculator is designed for HDB flat buyers, private-property buyers, first-time homeowners, investors and international purchasers. It does not replace an HDB Flat Eligibility (HFE) letter, a bank assessment, CPF rules or an IRAS stamp-duty determination, but it helps users test scenarios before committing to a property.
How the Singapore Mortgage Calculator Works
Enter Your Purchase Details
Enter the property price and contribution from cash, CPF OA savings or both. Choose an HDB Loan or Bank Loan, add the interest rate and select a term such as 20, 25 or 30 years. The estimated mortgage remains subject to LTV, valuation and approval.
Add Singapore-Specific Costs
Enter estimated BSD, ABSD, CPF OA usage and recurring property expenses. The calculator can distinguish CPF-supported funds from cash without deciding whether a withdrawal is permitted.
Review the Results
The reports show the repayment, loan amount, total interest, recurring costs, upfront requirements and amortisation. Compare several contributions, rates and terms rather than relying on one result.
Required Inputs Explained
Property Price
The property price affects the mortgage, contribution, BSD, possible ABSD and total capital committed.
Mortgage and stamp-duty assessments may use a property valuation rather than relying only on the stated price. IRAS calculates BSD and ABSD on the higher of the purchase price or market value, so a conservative estimate should account for this rule (IRAS Buyer’s Stamp Duty guidance
Initial Contribution
The initial contribution comes from cash, eligible CPF OA savings or both. A larger contribution lowers the mortgage, LTV, repayment and total interest, but buyers should retain funds for duties, renovation, emergencies and ownership costs.
Mortgage Interest Rate
The interest rate determines the monthly repayment and total interest. HDB concessionary rates follow a defined policy, while Bank Loan rates depend on the package and market. Bank costs can also include fees and lock-in conditions.
Loan Term
Common terms include 20, 25 and 30 years. A longer term lowers the monthly repayment but normally increases interest; a shorter term does the reverse. Property type, age and loan rules may limit the term, and MAS applies lower LTV limits in certain long-tenure or age cases (Monetary Authority of Singapore).
Loan Type
HDB housing loans are for eligible HDB flat purchases. Banks finance eligible HDB flats and private residential properties under their own criteria.
HDB flat buyers seeking an HDB Loan must apply for an HFE letter, which states their eligibility and estimated loan amount. Meeting general eligibility conditions does not guarantee approval because HDB also performs a credit assessment (Housing & Development Board).
Interest Type
A fixed rate remains unchanged during its stated period. A floating rate can move with its benchmark or lender terms, reducing repayments when rates fall or increasing them when rates rise.
Maintenance Fee
Condominiums and private apartments may charge a Maintenance Fee for facilities, management and common-property upkeep. HDB service and conservancy charges are different; enter the cost matching the property.
Understanding Singapore Mortgage Calculations
Loan Amount
The estimated loan is generally the price less the initial contribution. Valuation, LTV, tenure, income rules and assessment may reduce the approved amount. More borrowing increases repayment, interest and LTV.
Monthly Mortgage Repayment
Each monthly repayment contains principal and interest. The amount depends mainly on the loan, rate and duration. Earlier payments typically contain more interest; later payments reduce more principal.
Total Interest and Total Mortgage Cost
Total interest is the amount paid above principal under the assumptions. Total repayment combines both. Extending the mortgage lowers the monthly amount but usually adds interest.
Property-Related Costs
Ownership costs can include property tax, Maintenance Fees, insurance and repairs. Property tax is separate from the mortgage and depends on Annual Value and owner-occupier status, so users enter their own estimate.
Understanding Loan-to-Value Ratio
LTV compares the mortgage with property value. Lower LTV means more equity and less borrowing; higher LTV means a larger repayment commitment. MAS currently sets a 75% headline maximum for an individual’s first financial-institution housing loan, with lower limits in specified long-tenure, age or existing-loan cases (Monetary Authority of Singapore). HDB applies its own prevailing limit and eligibility rules.
HDB Loan vs Bank Loan: Which Mortgage Option Is Better?
The choice depends on eligibility, property, cash and CPF, rates, flexibility and refinancing plans.
HDB Loan
An HDB Loan is offered to eligible HDB flat buyers. It can reduce the minimum cash burden because CPF OA savings may fund more of the contribution, subject to rules.
The HDB concessionary interest rate is pegged at 0.1 percentage point above the prevailing CPF OA rate and is reviewed quarterly. It was 2.6% per annum for the first two quarters of 2026, but users should check the latest rate before calculating (Housing & Development Board).
HDB states that partial capital repayment has no lock-in period or administrative fee, subject to its procedures (Housing & Development Board).
Bank Loan
A Bank Loan offers fixed or floating packages with different rates, fees and lock-in periods. Rates may be competitive but can change after a promotional period, so compare the effective rate rather than only the opening rate.
Bank Loans may require more cash under LTV rules. With no outstanding housing loan, the headline 75% LTV limit carries a minimum 5% cash contribution; other cases can produce lower limits and higher cash requirements (Monetary Authority of Singapore).
HDB Loan and Bank Loan Comparison
| Feature | HDB Loan | Bank Loan |
|---|---|---|
| Provider | Housing & Development Board | Commercial bank or financial institution |
| Property scope | Eligible HDB flat purchases | Eligible HDB flats and private properties |
| Interest structure | HDB concessionary rate, reviewed quarterly | Fixed or floating packages |
| CPF OA usage | Available, subject to CPF and HDB rules | Available, subject to CPF and lender rules |
| Repayment flexibility | No HDB lock-in period for partial capital repayment | Depends on package and lock-in conditions |
| Upfront cash | Often lower for eligible buyers | Minimum cash rules may apply |
| Refinancing | Can refinance from HDB to a bank | Can refinance or reprice, subject to terms |
| Switching back | Not applicable while remaining with HDB | A bank-financed HDB loan cannot be switched back to HDB |
An HDB Loan can be refinanced with a regulated financial institution, but the borrower cannot later refinance that Bank Loan back to HDB (Housing & Development Board). This one-way decision makes long-term flexibility an important consideration.
Understanding BSD and ABSD in Singapore Property Purchase
Buyer’s Stamp Duty
BSD applies to Singapore property acquisitions and is based on the higher of purchase price or market value.
For residential property acquired on or after 15 February 2023, the current marginal BSD bands are:
| Portion of residential property value | BSD rate |
|---|---|
| First S$180,000 | 1% |
| Next S$180,000 | 2% |
| Next S$640,000 | 3% |
| Next S$500,000 | 4% |
| Next S$1,500,000 | 5% |
| Remaining amount | 6% |
The rates are progressive, so each rate applies only to the relevant portion. IRAS rounds BSD down to the nearest dollar, subject to a minimum duty of S$1 (Inland Revenue Authority of Singapore
Additional Buyer’s Stamp Duty
ABSD is additional to BSD. Its rate depends on citizenship or residency, property count and, for joint purchases, the highest applicable profile.
For residential property purchased on or after 27 April 2023, the main individual rates are:
| Buyer profile | Current ABSD rate |
|---|---|
| Singapore Citizen buying first residential property | Not applicable |
| Singapore Citizen buying second residential property | 20% |
| Singapore Citizen buying third or subsequent residential property | 30% |
| Singapore Permanent Resident buying first residential property | 5% |
| Singapore Permanent Resident buying second residential property | 30% |
| Singapore Permanent Resident buying third or subsequent residential property | 35% |
| Foreigner buying any residential property | 60% |
Special rules, remissions and treaty treatment may apply. Joint purchases, trusts, entities and married couples may need separate analysis, so verify the position with IRAS or a professional (Inland Revenue Authority of Singapore
An ABSD Calculator Singapore users rely on must know the correct buyer profile and property count. The mortgage calculator therefore treats BSD and ABSD as user-confirmed estimates and shows how they affect upfront funds rather than providing legal or tax advice.
Using CPF for Singapore Mortgage Payments
CPF OA savings may fund an eligible contribution and mortgage instalments, subject to housing rules and withdrawal limits. This can reduce immediate cash needs.
CPF usage is not a free subsidy. Withdrawn savings no longer earn OA interest, reducing retirement funds.
When the property is sold, CPF savings used for the property generally must be refunded to the CPF account together with accrued interest, from the available sale proceeds. CPF explains that this refund restores the amount used and the interest it would otherwise have earned (Central Provident Fund Board).
The CPF input estimates the CPF-and-cash split but does not determine the permitted withdrawal or future refund. Consider retaining an OA buffer for instalments and retirement.
Understanding Mortgage Lock-in Periods
A lock-in period is when changing or repaying a Bank Loan may trigger penalties. Refinancing, capital repayment or redemption may incur charges, and subsidies or cashback may be clawed back.
After the lock-in period, a borrower may compare refinancing with another bank or repricing with the current bank. MoneySense defines refinancing as switching to another lender and repricing as changing the package with the existing bank, and recommends comparing penalties, fees and effective rates (MoneySense).
The fixed-rate and lock-in end dates may differ. Check the property loan fact sheet and Letter of Offer.
Understanding Singapore Mortgage Calculator Results
Mortgage Summary
The summary shows monthly repayment, loan amount, principal and interest, total interest, total repayment and completion date. Compare scenarios because a lower monthly amount can create more lifetime interest.
Monthly Cost Breakdown
This report separates the mortgage from property tax, Maintenance Fees and insurance-related costs. Budget utilities, repairs and household expenses separately.
Cash Needed
Cash Needed summarises the contribution, BSD, ABSD, upfront insurance and CPF allocation. Add legal, valuation, agent, renovation and moving costs where relevant.
Payoff Planning
Payoff Planning shows the monthly payment, LTV and mortgage progress. Check Bank Loan penalties or HDB partial-repayment procedures before paying capital early.
Amortisation Preview
The amortisation preview lists each period, payment, principal, interest and balance. Floating rates, refinancing or capital repayments will alter the real schedule.
Example: S$450,000 Property Purchase
Consider a S$450,000 property with a S$90,000 initial contribution. The estimated mortgage is S$360,000, equivalent to 80% of the property price.
Assume a 30-year mortgage at 6.5% for this example. The estimated monthly principal and interest repayment is about S$2,275. If the rate remained unchanged for the full term, total repayments would be approximately S$819,160, including about S$459,160 in interest.
This is a mathematical illustration rather than a representation of a current HDB or Bank Loan package. An 80% LTV would exceed the headline 75% maximum for a first financial-institution housing loan (Monetary Authority of Singapore) and the 75% HDB housing-loan limit applied from the October 2024 BTO exercise (Housing & Development Board), so a real buyer may need a larger contribution or lower purchase price.
BSD on a S$450,000 residential property is approximately S$8,100 under the current progressive rates. A Singapore Citizen buying a first residential property would generally have no ABSD, producing initial purchase funds of about S$98,100 before legal, valuation, insurance, renovation and other costs, and before allocating eligible CPF.
The ABSD effect can be much larger for another buyer profile. A Singapore Permanent Resident buying a first residential property would face an estimated 5% ABSD of S$22,500, while a foreign buyer may face 60% ABSD of S$270,000, subject to current rules, remission or treaty treatment. This demonstrates why buyer status must be confirmed before relying on a cash estimate.
Tips to Reduce Singapore Mortgage Costs
Lower the LTV
A larger cash or CPF contribution reduces the mortgage, monthly repayment and total interest. It can also help the buyer remain within the applicable LTV limit.
Do not exhaust every liquid reserve merely to reduce LTV. Keep funds for duties, renovation, maintenance, emergencies and possible increases in floating-rate repayments.
Compare Loan Packages Carefully
Compare the opening rate, effective interest rate, fixed period, floating-rate basis, lock-in period, legal subsidy, repricing fee and early repayment terms. A package with the lowest advertised rate may not have the lowest total cost.
Use CPF Thoughtfully
CPF OA usage reduces immediate cash needs but also reduces retirement savings and creates a future refund obligation with accrued interest when the property is sold. Test a balanced cash-and-CPF approach rather than automatically using the maximum possible amount.
Consider Refinancing or Repricing
Review a Bank Loan before the fixed or lock-in period ends. Compare refinancing with a new lender against repricing with the existing bank after including legal costs, valuation fees, clawbacks and penalties.
Remember that refinancing an HDB Loan to a bank is a one-way switch. Once the HDB Loan has been refinanced with a financial institution, it cannot be switched back to HDB.
Manage the Loan Term
Choose the shortest term that remains comfortable under realistic rate and income scenarios. A longer term lowers the required monthly repayment but can add years of interest.
Use the Mortgage Affordability Calculator to test a sustainable purchase budget. Compare refinancing scenarios with the Mortgage Refinance Calculator and explore faster payoff with the Extra Repayment Calculator.
Conclusion
The Singapore Mortgage Calculator helps property buyers connect the mortgage with the other costs that shape a Singapore purchase. It estimates repayments and total interest while showing how HDB or Bank financing, CPF OA usage, BSD, ABSD, Maintenance Fees and the loan term can affect affordability.
Use several scenarios rather than treating one result as a prediction. Confirm HDB eligibility, bank terms, CPF withdrawal limits, stamp duties and professional fees before signing an Option to Purchase or accepting a loan.
Disclaimer: Mortgage calculations are estimates for educational purposes only. Actual mortgage rates, taxes, fees, and lending conditions vary depending on lenders and personal circumstances. Please consult a qualified mortgage adviser for personalised financial advice.
Frequently Asked Questions
How does the Singapore mortgage calculator work?
Our Singapore mortgage calculator estimates your monthly home loan payment based on the home price, down payment, interest rate, and loan term. It also calculates property taxes, insurance, and other costs specific to Singapore.
What costs are included in the Singapore mortgage payment?
The calculator includes principal and interest, property taxes, home insurance, and where applicable, PMI or equivalent mortgage insurance. Country-specific costs such as stamp duty, notary fees, or CPF usage are also included.
What is the typical down payment for a mortgage in Singapore?
Down payment requirements vary by country and lender. The calculator allows you to adjust the down payment percentage to match your situation in Singapore.