10 Best Home Loan Calculators in Singapore

Let’s face it — unless you struck Toto, buying a home in Singapore means taking a home loan (or mortgage). But how much can you borrow? What’s your monthly instalment? And will you still have enough left for bubble tea after paying your mortgage?

That’s where a home loan calculator comes in. These free online tools help you crunch the numbers before you commit, so you don’t get a nasty shock later. But not all calculators are created equal — some are super helpful, others are just, well, meh.

I’ve put the 10 most popular calculators to the test using a realistic 4-room BTO scenario. Here’s what I found, with honest pros, cons, and critical insights for each one.

What is a home loan?

A home loan (also called a mortgage) is money you borrow from the bank or HDB to buy a house. You pay it back every month, plus interest, for up to 25 or even 30 years. In Singapore, most people use a mix of CPF savings and cash to pay their home loan.

Why do you need to use a home loan calculator? Because you need to know:

• How much you can borrow
• What your monthly payments will be
• If you can really afford the flat you want

A good home loan calculator helps you avoid nasty surprises — and makes sure you still have money left after paying your mortgage.

Key home loan terms explained [Glossary]

• Loan Amount: The money you borrow from the bank or HDB.
• Down Payment: The amount you pay upfront (usually 10-25% of the flat price).
• Tenure: How many years you’ll take to pay back the loan.
• Interest Rate: The extra percentage you pay on top of the loan amount.
• CPF: Your Central Provident Fund savings — can be used to pay for your flat.
• TDSR: Total Debt Servicing Ratio — how much of your income goes to loan repayments.
• LTV: Loan-to-Value ratio — how much you can borrow compared to the flat price.
• MSR: Mortgage Servicing Ratio — how much of your income goes to your mortgage (for HDB/EC buyers).

10 Best Home Loan Calculators in Singapore

Here’s a quick comparison table for your reference:

CPF Mortgage Calculator Singapore

Best for anyone using their CPF savings (with or without cash) to pay for a home loan, especially those who want to plan their CPF usage and see long-term impacts on retirement savings.

This official CPF calculator lets you choose what you want to calculate:

• Monthly instalment amount — This calculator computes the monthly instalment on your housing loan. The payment can be a combination of cash and CPF savings.
• Maximum loan amount — This calculator computes a maximum loan amount based on your ability to service the loan. The payment can be a combination of cash and CPF savings.
• Loan still outstanding at your desired retirement age — This calculator will estimate the outstanding loan at your desired retirement age.
• Loan repayment period — The calculator computes how long it would take to repay a loan. Vary the inputs to see how the result changes (e.g. Increasing the monthly instalment).

For example, if you want to know your monthly instalment amount, just enter your loan amount, interest rate, and repayment period. The calculator will show you how much you need to pay each month, as well as total instalments for the year.

How to use it (step-by-step for beginners):

1. Go to the CPF Mortgage Calculator website.
2. Choose what you want to calculate (e.g., “Monthly instalment amount”).
3. Enter your loan amount, interest rate per annum, and loan repayment period in years.
4. Click “Calculate.”
5. Try other options (like “Maximum loan amount” or “Loan still outstanding at retirement age”) if you want to explore more scenarios.

How does the CPF loan calculator help? Depending on the options, this official calculator from CPF tells you your monthly instalment, breaks down CPF and cash portions, and even projects how much you’ll still owe at retirement.

This is especially useful if you want to plan your CPF usage wisely and avoid draining your retirement savings too quickly. However, it doesn’t compare different bank rates or show you what happens if interest rates change in the future, so you’ll need to use another tool for those scenarios.

Here’s what I think of the user experience. The interface is best used on desktop. It’s straightforward and gets the job done. It’s a no-frills tool, but the calculations are reliable and official. I do wish it had more visual aids or a summary chart, but for CPF planning, it’s hard to beat for accuracy.

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HDB Loan Calculator (Perfingo)

Best for first-time HDB buyers who want to check their loan eligibility and estimate their monthly payments, especially those unsure if they meet the strict HDB loan criteria.

This home loan calculator checks if you qualify for an HDB loan and estimates your potential loan amount and monthly instalments.

It stands out by clearly listing the HDB eligibility criteria upfront, such as:

• At least one applicant must be a Singapore Citizen
• Applicants/essential occupiers haven’t taken two or more HDB loans before
• Household income must not exceed $14,000 (families), $21,000 (extended families), or $7,000 (singles under SSC Scheme)
• No ownership or interest in any local or overseas private residential property

You can also add another applicant, which is great for couples or families buying together.

The calculator takes your income, flat price, CPF OA balance and age, then gives you an estimate of how much you can borrow and what your monthly payment will be.

It’s especially useful for new buyers who aren’t sure if they meet HDB’s strict requirements — no need to hunt for eligibility info elsewhere, it’s all on one page.

However, it only covers HDB loans, not bank loans, and doesn’t show you what happens if you refinance later.

Here’s what I think of the user experience. The interface is clean and beginner-friendly, with instant results and no confusing jargon. It’s great for first-timers but lacks info on what happens if your situation changes or if you want to compare with bank loans.

The constant “sign up” pop-ups were annoying, and you’ll also have to shell out $39.90 for the premium feature, which gives you a detailed breakdown of your housing payment and CPF projections, among other things such as budget planning for marriage and kids.

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UOB Home Loan Calculator

Best for those considering a UOB HDB home loan and want to quickly check how much they can borrow, their monthly instalments, and the upfront cash needed — including buyers with other financial commitments.

This home loan calculator helps you figure out your home loan affordability for a new HDB flat purchase with UOB. You’ll input details like your age, nationality, annual income, eligible financial assets, and property type (e.g., HDB flat).

There’s also the option to provide more details such as your monthly car loan, existing home loan, or other monthly commitments — making the estimate more tailored to your real financial situation. The tool calculates both the maximum loan you can get and the amount of cash you’ll need upfront, so you know your budget before you even start house-hunting.

It’s especially helpful if you want a realistic picture of your buying power, not just a basic loan estimate.

By factoring in your income, debts, and assets, the calculator gives you a more accurate view of what you can afford. It also highlights the cash you’ll need for downpayment, legal fees, and other upfront costs — something many buyers overlook.

Plus, you can see how your other loans (like car loans) affect your housing loan eligibility.

Here’s what I think of the user experience. The interface is modern, mobile-friendly, and easy to use. Dropdowns and tick boxes make it simple to fill in your info, and you can instantly see your results. The option to add other applicants or financial commitments is a big plus for couples and families.

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OCBC OneAdvisor Home Affordability Calculator

Best for anyone who wants a detailed, all-in-one affordability check — including first-time buyers, upgraders, and families comparing HDB and private properties.

OCBC’s OneAdvisor Home Affordability Calculator helps you figure out how much you can borrow, your maximum property price, and the upfront cash you’ll need.

You start by selecting your property type (e.g., HDB flat), and can optionally enter your dream home’s price. The calculator then prompts you for personal details: age, nationality, number of properties you already own, existing home loans, and income (fixed and variable).

You can also input your available funds for downpayment and fees (both cash and CPF), as well as any credit card and loan commitments. The tool supports multiple applicants, so you can add co-buyers like your spouse or family members.

This calculator stands out for its thoroughness. It doesn’t just estimate your loan amount — it also factors in your debts, available cash and CPF, and even your monthly credit card spending.

It gives you a realistic picture of your true affordability, including how much you’ll need upfront for downpayment, legal fees, and stamp duty. You’ll also see if your income and commitments meet the TDSR and MSR requirements.

Here’s what I think of the user experience. The interface is idiot-proof, step-by-step, and mobile-friendly. It guides you through each section with clear prompts, and you can save time by skipping optional fields. Results are presented in a detailed breakdown, including a summary of your maximum loan, monthly instalment, and upfront cash needed.

The process takes about five minutes for a single applicant. The only downside is that it can feel a bit lengthy if you fill in every optional detail, but the thoroughness means you get a much more accurate estimate.

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DBS Home Loan Calculator Singapore

Best for anyone planning to buy a home with DBS — whether you know your dream property’s price, your target monthly instalment, or just want to see your maximum loan amount. Great for both planners and explorers.

The DBS Home Loan Calculator is a flexible tool that lets you start your calculation based on what matters most to you. You can choose from:

• Property Price: Enter the price of a home you’re eyeing.
• Monthly Instalment: Input the amount you’re comfortable paying each month.
• Downpayment: Specify how much you’ve set aside for your purchase.
• I’m Still Exploring: Let the calculator work out your maximum loan amount based on your profile.

Once you select your starting point, you’ll fill in details like your age, income, property type (HDB or private), and loan tenure. The tool then calculates your maximum loan, required downpayment, and estimated monthly instalments.

It gives you a quick, honest answer to “How much can I really afford?” and breaks down the numbers for you.

You can save your budget by logging in, so you don’t have to redo the whole process next time. However, it only calculates for DBS loans and doesn’t compare other banks’ rates or packages.

Here’s what I think of the user experience. The interface is clean, and very user-friendly. It guides you step by step, with clear prompts and instant results. The visual chart is great for those who want to see the breakdown at a glance. You can easily adjust your details or add a partner, and saving your results for future planning is a huge plus.

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99.co Property Affordability Calculator

Best for first-time buyers, upgraders, or anyone who wants a clear, regulation-based estimate of how much property they can afford — whether it’s HDB, EC, or private. Especially useful if you want to factor in all your income, debts, and even your partner’s details.

The 99.co Property Affordability Calculator is a user-friendly online tool that helps you determine your true buying power in Singapore’s property market. You fill in your details—single or joint applicant, residency, age, monthly income (fixed and variable), cash and CPF savings, and all monthly debt obligations (credit cards, car loans, other home loans, etc.). You can select the type of property you’re interested in (HDB, EC, or private), adjust the loan tenure (up to 35 years), and set your expected interest rate.

The home loan calculator then crunches your numbers against Singapore’s key property rules:

• TDSR (Total Debt Servicing Ratio): Capping your total monthly debt at 55% of your income.
• MSR (Mortgage Servicing Ratio): For HDB/EC, capping your mortgage at 30% of income.
• LTV (Loan-to-Value Ratio): Usually up to 75% for your first loan, lower if you have other mortgages.

It instantly shows your maximum property price, maximum bank loan, required downpayment (split into cash and CPF), and monthly mortgage budget. You’ll also see your BSD (Buyer’s Stamp Duty) and ABSD (if any).

You can see how changes in income, debts, or downpayment affect your budget, and filter out properties that are out of reach. The tool also links you straight to relevant property listings on 99.co, making your search seamless. However, it doesn’t compare specific bank loan packages or show you the lowest rates, so use it as a first step before shopping for the best mortgage deals.

Here’s what I think of the user experience. The interface is simple, with a hint of colour (for visual folks), and extremely beginner-friendly. There’s a visual circular chart for at-a-glance understanding, and a detailed summary table for number crunchers.

You can easily add your partner’s info, adjust your numbers, and see instant updates. The only minor downside is that it’s focused on affordability, not in-depth loan package comparisons.

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MortgageMaster Home Loan Calculator

Best for anyone who wants a fast, no-frills estimate of their monthly mortgage repayments and total interest paid — ideal for quick checks, budgeting, or comparing different loan tenures and interest rates.

The MortgageMaster Home Loan Calculator is a straightforward online tool that estimates your monthly home loan repayments in Singapore. You simply enter your loan amount, loan tenure (in years), and annual interest rate. The calculator then shows you:

• Your monthly payment amount
• The total payment over the life of the loan
• The total interest you’ll pay

There are also links to a Reverse Affordability Calculator (to find the maximum property price you can afford) and a Mortgage Affordability Calculator (to find your maximum home loan amount).

This tool is perfect for quickly working out your monthly commitment and seeing how much interest you’ll pay over the years. It’s especially useful if you want to compare different scenarios — like a 25-year loan versus a 30-year loan, or how a small change in interest rate affects your monthly payments.

However, it doesn’t factor in CPF payments, legal fees, or compare specific bank packages, so use it as a general guide rather than a comprehensive planning tool.

Here’s what I think of the user experience. The interface is clean, fast, and works well on both desktop and mobile. There are no confusing extras — just fill in your numbers and see your results instantly. The results are presented clearly, with a payment breakdown and total interest figure.

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Finko Maximum Housing Loan Calculator

Best for anyone who wants a fast, fuss-free estimate of the maximum housing loan they’re eligible for — especially useful for buyers with multiple income sources or those applying jointly.

The Finko Maximum Housing Loan Calculator helps you find out the largest loan amount you can get for your property purchase in Singapore.

You fill in key details such as property type, age of main borrower, number of existing home loans, and income information (fixed, bonus, variable, rental). You can also add up to three joint borrowers for a more accurate assessment. The calculator takes into account your total existing monthly instalments to ensure you stay within regulatory limits.

After entering your information, it instantly calculates your maximum eligible loan amount, the highest property price you can target (based on typical 75% financing), and the maximum tenure allowed.

This tool is especially handy if you want to know your borrowing limit before you start house-hunting, so you don’t waste time viewing homes out of your budget. It’s also useful for those with complex income streams (like bonuses or rental income) or for couples/families buying together.

However, it doesn’t show your monthly repayment amount or total interest, so you’ll need another calculator for those details. It also doesn’t compare bank packages or show you specific rates — use it as a first step before diving deeper into loan options.

Here’s what I think of the user experience. The interface is simple and straightforward, with clear fields and dropdowns. It’s easy to add joint borrowers and extra income sources. The results are presented instantly, showing your maximum loan and purchase price at a glance. The site looks a bit dated and doesn’t include visual charts or repayment breakdowns, but for a fast eligibility check, it does the job well.

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Singapore Home Loan Calculator App

A mobile app with lots of features. Serious planners, property investors, and anyone who wants a comprehensive, all-in-one mobile app for every type of home loan scenario in Singapore — including CPF, HDB, EC, private, and even advanced strategies like decoupling or selling and buying multiple properties.

This app is a Swiss Army knife for home loan planning in Singapore. It calculates everything from TDSR/MSR to your maximum loan amount, purchase price, and the cash required for your chosen tenure or LTV.

You can select different loan types (HDB HLE, HDB bank loan, EC, private), key in your purchase price, loan, tenure, interest, or monthly payment, and the app fills in the rest automatically. It also provides amortisation tables, repayment charts, and prepayment calculations.

Beyond the basics, it includes tools for:

• Calculating resale levy, CPF housing grants, and maximum CPF usage for EC/HDB
• Stamp duty for rental, residential, mortgage, and seller scenarios
• Decoupling (for buyers planning to purchase a second property)
• “Sell 1 Buy 2” scenarios, showing CPF/cash proceeds and options for using them on one or two new properties
• Calculating term loans, rental yield (gross/net), ROI, and even property index data across regions and districts
• Finding HDB branches and schools within various distances of your chosen property

All your profiles and calculations can be saved to the cloud and synced across devices, so you can revisit or update your data anytime.

This app is incredibly powerful for anyone who wants to plan for every possible “what if” in their property journey. It’s not just about monthly payments — it helps you plan CPF usage, see how much cash you’ll need at each stage, calculate grants, and even explore advanced strategies like decoupling or maximising your loan eligibility.

It’s especially helpful for investors or upgraders who want to compare scenarios side by side. However, the sheer number of features can be overwhelming for casual users, and some advanced tools may require a bit of learning or trial and error to master.

Here’s what I think of the user experience. Unlike other calculators, which you can instantly access online, I found it a bit troublesome to download it onto my phone at first.

But once I got over the downloading and played around with the app, it felt like having a mini financial planner in my pocket. The depth is amazing, but be prepared to spend some time learning where everything is.

The app is packed with features and options, with a clean interface and helpful prompts, but it does have a learning curve for first-timers. The ability to save and sync profiles is a huge plus, especially if you’re comparing multiple properties or planning with a partner. Visual learners will appreciate the charts and breakdowns, and the inclusion of the latest CPF grant info and property indices is a rare find.

Despite the learning curve, it’s incredibly powerful for those who want detailed insights and the ability to save and revisit multiple loan scenarios. For serious planners or property enthusiasts, this app is invaluable, but casual users might find it a bit too complex.

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Calculator.com.my (Malaysia)

Best for Singaporeans or PRs with extra cash eyeing a property across the Causeway, or anyone wanting to compare Malaysia home loan repayments and interest breakdowns in detail.

This calculator estimates your monthly repayment for a Malaysian home loan. You enter the property price in Ringgit (RM), your down payment (as a percentage), loan period (up to 35 years), and interest rate.

The tool then calculates your monthly repayment, and generates a full payment schedule showing principal, interest, and outstanding balance for each year of your loan. You’ll also get a pie chart visualising how much you pay in principal versus interest, and a full table of yearly breakdowns.

It’s perfect for anyone considering buying in Malaysia and wanting to know the real cost of their loan. You can see at a glance how much you’ll pay each month, how much goes to interest, and how your loan balance drops over time.

The tool also lists the latest fixed-rate home loan interest rates from major Malaysian banks, so you can compare your options. However, it’s not updated, so you’ll still have to manually search for Malaysian bank loans yourself. Despite that, this website remains a great way to plan your cross-border investment or simply satisfy your curiosity about Malaysian home loans.

Here’s what I think of the user experience. The interface is simple, fast, and packed with useful visuals. Just fill in your numbers and hit “Calculate” — results appear instantly, with charts and tables that are easy to understand even for beginners.

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