Mortgage Wizard Calculator

Property Purchase Wizard

Step-by-step guide to understand your property purchase costs and eligibility.

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Step 1: Your Profile

How to Use the Wizard Calculator

Key Takeaways

  • Singapore citizenship status, existing property count, and whether the purchase is HDB or private together determine your ABSD rate — which ranges from 0% for first-property Singapore Citizens up to 65% for certain foreign buyers on a third-and-above purchase.
  • TDSR (Total Debt Servicing Ratio) caps all loan repayments at 55% of gross monthly income — for a buyer earning $10,000/month, maximum total debt service is $5,500, which typically supports a maximum loan of around $1.05M at current interest rates.
  • CPF Ordinary Account funds can be used for down payment and monthly loan instalments on private property, but the CPF Accrued Interest rule means you must refund CPF plus compounded interest (currently 2.5% p.a.) when you sell, reducing net cash proceeds.
  • Most first-time buyers discover their eligibility constraints only after making an offer — running the wizard before your property search sets a realistic budget ceiling and prevents costly Option to Purchase forfeitures.
  • Second-property buyers must budget 20% ABSD on top of the purchase price — on a $1.5M purchase that is $300,000 payable within 14 days of exercising the OTP, a cash requirement many buyers underestimate.

What It Does

Answer a few simple questions about your income, risk appetite, and property plans and get a personalised mortgage recommendation. The wizard analyses TDSR, MSR, LTV, and rate sensitivity to suggest the optimal loan structure for your situation.

You can find this calculator in the Calculators tab on ShiokNest. It updates results instantly as you adjust inputs — no waiting, no page reloads.

Why It Matters

Buying property in Singapore involves at least six overlapping financial rules that interact in non-obvious ways: TDSR (total debt cap at 55% of income), MSR (mortgage servicing cap at 30% for HDB), LTV limits (up to 75% for first private property, 45% for second), ABSD (up to 65% for certain buyers), BSD (tiered from 1% to 6%), and CPF usage rules. A buyer earning $12,000 per month with $300,000 in CPF OA and $200,000 cash who assumes they can buy any $2M property will be surprised to find that TDSR limits their loan to roughly $1.26M, BSD adds $54,600, and if this is their second property, ABSD adds a further $400,000 — making the true all-in cost $2.45M against a cash-and-CPF reserve of only $500,000. Running the numbers before you start viewing saves weeks of wasted effort and protects your 1% option fee.

The single most important number the wizard produces is Total Cash Needed at Completion: the sum of the minimum cash portion of the down payment (always at least 5% cash for private property), BSD, ABSD, legal fees, and the gap between the maximum bank loan and the purchase price, net of CPF that can be applied. This figure tells you whether you can actually complete the purchase — not just whether you can afford the monthly repayments. Many buyers can service the loan comfortably but cannot clear the upfront cash requirement, which is why forfeitures happen.

The most common mistake is starting a property search with a budget based on maximum loan alone ("the bank said I can borrow $1.2M, so my budget is $1.6M") without accounting for ABSD and the 5% mandatory cash component. A Singapore Citizen buying their second property at $1.6M needs to find: 5% cash down ($80,000), 20% top-up from CPF or cash ($320,000), plus 20% ABSD ($320,000), plus BSD ($44,600), plus legal and agent fees (~$15,000) — a total upfront requirement of $779,600. If that exceeds liquid assets, the transaction will fail at completion stage.

After the wizard confirms your eligibility and total cash requirement, use the Stamp Duty Calculator for a detailed stamp duty breakdown and the Affordability Calculator to fine-tune your maximum purchase price across different income and loan scenarios.

How It Works

  • Navigate to Calculators — Click the "Calculators" tab in the ShiokNest navigation bar. All 47 calculators are grouped by purpose for easy access.
  • Select the calculator — Choose "How to Use the Mortgage Recommender" from the calculator list. You will see default values already loaded so you can explore immediately.
  • ️ Enter your values — Replace the defaults with your own numbers. The key fields are:
  • Review the results — The calculator updates instantly as you change any input. Key results are displayed in KPI cards and charts that update as you adjust inputs.
  • Run what-if scenarios — This is where the real power lies. Change one variable at a time to see its impact. For example, try increasing the interest rate by 1% or extending your holding period by 5 years. Note how the results shift.
  • Compare and decide — Run 2-3 different scenarios and note the results. This gives you a range of outcomes to base your decision on, rather than relying on a single projection.

Examples

First-Time SC Buyer: $1.5M Private Condo

Inputs
Buyer Profile
Singapore Citizen, 1st property
Purchase Price
$1,500,000 (99-yr leasehold condo)
Monthly Income
$10,000 (no existing debts)
CPF OA / Cash
$200,000 CPF OA + $150,000 cash
Results
ABSD
0% (1st property SC)
BSD
$44,600
Max Loan (75% LTV)
$1,125,000
Total Cash Needed
$94,600 (5% cash down + BSD + fees)

How to read this: For a first-time Singapore Citizen buying a private condo, the numbers look manageable. ABSD is zero, BSD is $44,600 on a $1.5M purchase (calculated on the tiered BSD scale), and the maximum loan at 75% LTV is $1,125,000. The remaining $375,000 down payment can come from CPF OA (up to $200,000 available) and cash, leaving $175,000 to be funded from cash. Combined with the mandatory 5% cash component ($75,000) and BSD ($44,600) and legal fees (~$5,000), the hard cash outlay is approximately $9...

SC Upgrader: Selling HDB to Buy Second Private Property

Inputs
Buyer Profile
Singapore Citizen, 2nd property (HDB still owned)
Purchase Price
$1,800,000 (freehold condo)
Monthly Income
$15,000 (HDB loan $1,200/mth remaining)
CPF OA / Cash
$350,000 CPF OA + $300,000 cash
Results
ABSD
20% = $360,000
BSD
$54,600
Max Loan (45% LTV)
$810,000
Total Cash Needed at Completion
$504,600 (before HDB sale proceeds)

How to read this: This scenario illustrates the upgrade trap many Singaporeans fall into. The 20% ABSD on a second property is $360,000 — due within 14 days of exercising the OTP — and must be paid in cash (not CPF). The buyer has $300,000 in cash, which is $60,000 short of ABSD alone, before counting the mandatory 5% cash down payment ($90,000), BSD ($54,600), and legal fees. Total cash needed at completion is approximately $504,600 against $300,000 available — a shortfall of $204,600. The standard solu...

Tips & Pitfalls

Expert Tips

  • Use realistic assumptions — Singapore condo appreciation has historically averaged 2-4% per year. Avoid overly optimistic projections. When in doubt, use 3% as a baseline.

Common Pitfalls

  • Making an offer before running the wizard. The 1% option fee on a $1.5M property is $15,000 — non-refundable if you cannot complete. Many buyers pay the option, then discover during due diligence that ABSD makes the transaction unaffordable, or that TDSR is breached when the bank formally assesses their income. The wizard takes under three minutes and surfaces any showstopper before you commit a single dollar.
  • Forgetting that CPF accrued interest reduces net sale proceeds. When you use CPF OA for your down payment and monthly instalments, the CPF Board charges accrued interest at 2.5% per annum on the amount withdrawn. You must refund the principal plus all accrued interest when you sell. On $200,000 of CPF used over 10 years, the accrued interest is approximately $56,000 — meaning your actual cash-in-hand from the sale is $56,000 lower than you might expect. The wizard accounts ...
  • Assuming the same LTV applies to second and third properties. For a first private property, LTV is up to 75%. For a second outstanding housing loan, LTV drops to 45%. For a third or subsequent loan, it is 35%. This means the cash-and-CPF contribution required scales sharply: upgrading from HDB to a $2M condo while still holding the HDB loan requires a 55% upfront contribution ($1.1M from own funds), not the 25% most buyers assume. The wizard calculates the correct LTV tier ba...

Frequently Asked Questions

Is my data saved?
No. All calculations run entirely in your browser. Nothing you enter — income, savings, property count, or any other personal details — is transmitted to our servers or stored anywhere. You can close the tab and your inputs will be cleared.
What is ABSD and how much will I pay?
Additional Buyer's Stamp Duty (ABSD) is a surcharge on top of Buyer's Stamp Duty (BSD), applied based on your residency status and how many properties you already own. As of 2024: Singapore Citizens pay 0% on their first property, 20% on the second, 30% on the third and beyond. PRs pay 5% on the first, 30% on the second and beyond. Foreigners pay 60% on any purchase. These rates are set by IRAS and are subject to change — the wizard uses the current published rates.
What is TDSR and how does it limit my loan?
Total Debt Servicing Ratio (TDSR) caps all monthly debt repayments — including your new mortgage, car loans, credit card minimum payments, and any other instalment obligations — at 55% of gross monthly income. For a buyer earning $10,000 per month, maximum total debt service is $5,500. If you have an existing car loan of $800/month, only $4,700 is available for mortgage repayment, which at 3.5% over 25 years supports a maximum loan of approximately $884,000. TDSR is assessed by your bank ...
Can I use CPF to pay the down payment on a private property?
Yes, but with an important constraint: for a private property, the minimum 5% of the purchase price must be paid in cash — CPF cannot substitute for this cash component. The remaining portion of the down payment (up to 20% for first property, more for subsequent) can come from your CPF Ordinary Account. CPF usage is also subject to the Valuation Limit (VL) and Withdrawal Limit (WL): you can use CPF up to the VL (purchase price or valuation, whichever is lower) and beyond that up to the WL (...
How does the wizard handle the HDB upgrader ABSD remission?
Singapore Citizens who own an HDB and purchase a private property are liable for 20% ABSD upfront. However, if they sell their HDB within 6 months of the private property's purchase (or Temporary Occupation Permit date for new launches, whichever is later), they are eligible for an ABSD remission — essentially a refund of the 20%. The wizard flags this remission option when your profile is a Singaporean Citizen with exactly one existing HDB. Note that you must still have the cash to pay ABS...

Related Resources

Article How to Calculate Cash Proceeds from Selling Article How to Choose an Interior Designer in Singapore Article Condo Renovation Rules in Singapore — What You Can and Can't Do Article Singapore Property Market & Policy Guide Hub Article Singapore Condo Living Guide Hub Calculator How to Check TDSR and MSR Affordability
Disclaimer: Figures shown are estimates for planning purposes only. Rates, rules, and grant quanta change frequently — verify with your bank, HDB, or a licensed financial advisor before acting.