Thomson Reserve Affordability Calculator: How Much Do You Need to Buy in District 20?
Thomson Reserve is launching in Q3 2026 with 1,240 units. Before you register your interest or step into the showflat, the most important number to know is not the price of the unit you want – it is the maximum you can comfortably borrow and sustain.
This free affordability calculator is built for the three buyer profiles most likely to purchase Thomson Reserve:
- HDB upgraders moving into their first private condo,
- Permanent Residents building their Singapore property portfolio, and
- investors adding a District 20 asset.
Enter your gross household income, CPF Ordinary Account balance, and existing monthly debt obligations, and the calculator returns your maximum eligible loan, required downpayment split, ABSD exposure, and estimated monthly instalment – so you know exactly where you stand.
TDSR Affordability Calculator
For Private Property Purchase In Singapore
No. Of Applicants: 1
TDSR For 1st Home Loan
Disclaimer: This website or its salespersons will not be responsible for any errors or omissions or for the results obtained from the use of this information. All information is provided with no guarantee of accuracy. If in doubt, kindly seek appropriate advice from your financial advisors or bankers before you make any property investment decisions.
What the Affordability Calculator Computes
1. Total Debt Servicing Ratio (TDSR)
The Monetary Authority of Singapore (MAS) requires that your total monthly debt repayments – including the home loan you are applying for – do not exceed 55% of your gross monthly income. This cap applies to all private residential properties including condominiums and landed houses.
Example: If your gross monthly income is $12,000, your maximum total monthly debt obligation is $6,600. If you already have a car loan of $1,200 per month, your maximum mortgage instalment is capped at $5,400.
2. Loan-to-Value (LTV) Limits
The LTV limit determines how much a bank can lend you relative to the purchase price or valuation (whichever is lower). For buyers with no outstanding home loans, the maximum LTV is 75% – meaning the remaining 25% must come from your own funds, either cash or CPF OA savings. Of that 25%, at least 5% must be in cash. CPF can cover the other 20%.
3. Loan Tenure and Age Limits
The maximum loan tenure for a private property bank loan is 30 years, or until age 65 (whichever is shorter). Borrowers closer to retirement age will have a shorter loan tenure, which increases monthly instalments and reduces borrowing capacity.
How CPF Affects Your Affordability
Singapore Citizens and Permanent Residents can use CPF Ordinary Account (OA) savings for the initial downpayment and monthly mortgage instalments.
For HDB upgraders, CPF savings deployed in the HDB flat are refunded with accrued interest upon sale and can be redeployed toward Thomson Reserve. Use the HDB Sales Proceeds Calculator to find your CPF refund amount first, then enter it here.
ABSD Is Part of Your Total Cost
One of the most common mistakes buyers make is calculating affordability based on purchase price alone, without factoring in Additional Buyer’s Stamp Duty (ABSD). For Singapore Citizens buying a second property, ABSD is 20% of the purchase price – payable in cash within 14 days of signing the Sale and Purchase Agreement. For Permanent Residents buying their first property, ABSD is 5%. Foreigners pay 60%.
The calculator factors in your buyer profile and property count so your ABSD obligation is included in your total cost picture – not buried as a surprise at the conveyancing stage.
HDB Upgraders: Run the Sales Proceeds Calculator First
If you own an HDB flat and are planning to upgrade to Thomson Reserve, your affordability calculation must account for the proceeds from your HDB sale. Your net cash covers the 5% booking fee and stamp duties. Your CPF OA refund covers the 20% balance downpayment.
Use the HDB Sales Proceeds Calculator to find both figures first, then return here with those numbers for an accurate affordability picture.
What Lenders Look at Beyond TDSR
Banks apply their own internal credit assessments beyond TDSR – including employment type, income documentation (3 months payslips and latest Notice of Assessment), credit bureau score, and existing loan commitments. Each outstanding home loan reduces LTV from 75% to 45% for the next home loan.
Getting an In-Principle Approval (IPA) from a bank before the Thomson Reserve showflat opens in Q3 2026 is strongly recommended. It is free, takes 1 to 3 business days, and confirms your exact borrowing limit so you can make a confident decision on launch day.
What Income Do You Need for Thomson Reserve?
Based on indicative analyst pricing and standard loan assumptions – 75% LTV, 30-year tenure, 4% blended interest rate, no other outstanding loans:
- If your budget is around $1.4M: Minimum gross monthly income approximately $7,500 to $9,000. Minimum cash for booking fee and BSD: approximately $91,600.
- If your budget is between $1.8M to $2.2M: Minimum gross monthly income approximately $9,500 to $12,000. Minimum cash: approximately $115,600 to $139,600.
- If your budget is between $2.5M to $3.2M: Minimum gross monthly income approximately $13,000 to $17,000. Minimum cash: approximately $154,600 to $194,600.
- If your budget is between $3.5M to $4.5M: Minimum gross monthly income approximately $18,000 to $24,000. Minimum cash: approximately $209,600 to $264,600.
- If your budget is between $4.5M to $6M: Minimum gross monthly income approximately $24,000 to $32,000. Minimum cash: approximately $264,600 to $339,600.
These are estimates based on indicative analyst projections. Official pricing will be released at launch. Use the calculator above with the actual unit price for an accurate personal figure.
Ready to Know Your Real Budget Before the Showflat?
Run the calculator above, then register your interest for Thomson Reserve. Knowing your numbers before launch day means you decide with confidence – without pressure and without guesswork.
This calculator is for general guidance only and does not constitute financial advice. All loan approvals are subject to individual bank assessment and prevailing MAS regulations. Stamp duty rates are as per IRAS guidelines current at time of publication. Thomson Reserve pricing figures are analyst estimates – official pricing has not been released by the developer.
Frequently Asked Questions
How does the Singapore property affordability calculator work?
The calculator uses your gross monthly income, existing monthly debt obligations, available CPF Ordinary Account savings, and buyer profile (Singaporean, PR or foreigner) to compute three outputs: your maximum eligible bank loan under MAS TDSR rules, your required downpayment split between cash and CPF, and your estimated monthly instalment. It also factors in ABSD where applicable based on your property ownership count.
What is TDSR and how does it affect how much I can borrow?
TDSR stands for Total Debt Servicing Ratio. MAS requires that the sum of all your monthly debt repayments — including the home loan you are applying for — cannot exceed 55% of your gross monthly income. If you earn $10,000 per month and already have a $1,000 car loan, your maximum monthly mortgage instalment is $4,500 (55% of $10,000 minus $1,000). The calculator applies this cap automatically to determine your maximum loan amount.
How much cash do I need to buy Thomson Reserve?
The minimum mandatory cash is 5% of the purchase price — this is the booking fee payable at the point of exercising the Option to Purchase. The remaining 20% of the downpayment can come from CPF Ordinary Account savings. You also need cash for Buyer’s Stamp Duty (BSD) and legal fees, which cannot be paid using CPF. For a Thomson Reserve 2-bedroom at approximately $2M, expect a minimum of $100,000 in cash for the booking fee plus approximately $54,600 in BSD — a total upfront cash requirement of approximately $154,600 before CPF is counted.
Can I use CPF to pay the downpayment for Thomson Reserve?
Yes. Singapore Citizens and PRs can use CPF Ordinary Account (OA) savings to cover up to 20% of the purchase price as part of the downpayment. The mandatory 5% booking fee must be paid in cash. Monthly mortgage instalments can also be paid using CPF OA up to the Valuation Limit (VL) of the property. CPF usage is not available to foreigners.
Does the affordability calculator include ABSD?
Yes. The calculator factors in your buyer profile and current property count to include the applicable Additional Buyer’s Stamp Duty (ABSD). For Singapore Citizens buying a second property, ABSD is 20%. For PRs buying their first property, ABSD is 5%. ABSD must be paid in cash within 14 days of signing the Sale and Purchase Agreement — on a $2M Thomson Reserve unit, that is $400,000 for a Singapore Citizen buying a second property.
What is the maximum loan tenure for a private property in Singapore?
The maximum loan tenure for a private residential property is 30 years, subject to the loan being fully repaid by the time the borrower turns 65 years old. If you are 40 years old, your maximum loan tenure is 25 years — not 30. A shorter tenure means higher monthly instalments and lower maximum borrowing capacity under TDSR.
What is an In-Principle Approval (IPA) and do I need one before the Thomson Reserve showflat?
An In-Principle Approval (IPA) is a letter from a bank confirming the maximum loan amount you qualify for, based on a preliminary assessment of your income and debt obligations. It is free, non-binding, and typically issued within 1 to 3 business days. Getting an IPA before the Thomson Reserve showflat preview in Q3 2026 is strongly recommended — it confirms your exact borrowing limit so you can make a confident same-day decision if a unit you want is available.
How much do I need to earn to afford a Thomson Reserve 2-bedroom?
Based on indicative analyst pricing of approximately $1.8M to $2.2M for a Thomson Reserve 2-bedroom, and assuming a 75% LTV bank loan over 30 years at approximately 4% blended interest rate with no other outstanding debts, the minimum gross household income required is approximately $9,500 to $12,000 per month. Your mandatory upfront cash — covering the 5% booking fee and BSD — is approximately $115,600 to $139,600. Use the calculator above with your specific income and debt profile for a personalised figure.
I own an HDB flat. Can I afford Thomson Reserve without selling first?
You can buy Thomson Reserve while still owning your HDB flat, but the cost difference is significant. As a Singapore Citizen buying a second property, you pay ABSD of 20% — on a $2M unit, that is $400,000 in cash within 14 days of signing the S&P. Your LTV also drops from 75% to 45%, meaning your bank loan is limited to $900,000 and you need $1.1M from your own funds before ABSD. Most HDB upgraders find it more practical to sell the HDB first (0% ABSD, 75% LTV) and rent during Thomson Reserve’s construction period to estimated TOP 2030. Use the HDB Sales Proceeds Calculator at /hdb-sales-proceeds-calculator/ to map your net cash position before deciding.
I am a PR buying Thomson Reserve as my first private property. What do I need to know?
PRs purchasing their first private residential property in Singapore pay ABSD of 5%. On a $2M Thomson Reserve unit, that is $100,000 in ABSD — payable in cash within 14 days of S&P. PRs can access 75% LTV on a first property and use CPF OA for the downpayment and monthly instalments. Select PR and First Property in the calculator to see your accurate total cost including ABSD. Thomson Reserve is fully eligible for PR purchase with no nationality restrictions on private condominiums.