Nexus Mortgage SG  ·  April 2026  ·  6-minute read  ·  Private Property

TDSR Private Property Singapore: What Buyers Must Know in 2026

Buying a private condo or landed home in Singapore? MSR does not touch you. The 55% TDSR cap and the MAS 4.00% p.a. stress floor do. Here is exactly how banks calculate your maximum loan in April 2026, where most buyers leave money on the table, and the one credit-card rule almost everyone forgets.

The One Rule That Sets Private Property Apart: No MSR

If you have only ever bought an HDB flat before, the most useful thing to learn first is what does not apply. The 30% Mortgage Servicing Ratio (MSR) is an HDB and Executive Condominium rule. It does not apply to private condominiums, walk-ups, or landed homes financed with a bank loan.

For private property, only one ratio matters: the Total Debt Servicing Ratio (TDSR), capped at 55% of gross monthly income. This single difference is why a household earning S$15,000 a month can often borrow more for a private condo than for an HDB flat of similar value — the second 25 percentage points of headroom (55% TDSR vs 30% MSR) belong to private buyers.

How TDSR Is Actually Calculated

The arithmetic is simple. The trap is the assessment rate. Banks cannot use the headline rate on your loan package — they must size the qualifying instalment using the higher of the contractual rate or 4.00% p.a., per MAS TDSR rules.

In April 2026, fixed packages start from 1.40% p.a. and SORA-linked loans typically deliver an effective 1.65%–1.85% p.a. (see our live current Singapore home loan rates). Every one of those is below the 4% floor, so the floor wins. Your real cash outflow is one number; the number the bank uses to assess you is bigger. The full mechanics are in our companion piece on the MAS 4% stress test.

Two things to notice. First, the buyer qualifies for an instalment of S$5,100, but their actual monthly outflow at 1.65% is only S$3,770 — a S$1,330 monthly buffer that exists by design. Second, the credit-card line item shaved S$600 off the headroom. Most buyers forget this entirely.

The Credit-Card Trap (And Other TDSR Killers)

Private property buyers tend to be higher earners with multiple credit cards, a car, perhaps a renovation loan from a previous home. Each line item bites into TDSR before the new mortgage even enters the picture.

Every existing obligation consumes TDSR headroom before the new mortgage is added. Credit-card balances are counted at a 3% monthly factor regardless of whether you clear the bill in full each cycle.

• Credit cards: 3% of the outstanding statement balance, treated as a monthly debt — even if you pay in full. A S$50,000 balance costs you S$1,500/month of TDSR room.
• Car loans: Full monthly instalment included until the loan is fully discharged.
• Personal, education, renovation loans: Full monthly instalment, regardless of how short the tail is.
• Existing property loans: Full instalment on every outstanding home loan you guarantee or co-borrow on.
• Guarantor positions: Banks may include a share of any loan you have guaranteed for a parent, sibling, or partner.

Joint Borrowers and the IWAA Tenure Rule

When two or more people borrow together, banks set the maximum loan tenure using the Income-Weighted Average Age (IWAA) of all borrowers. A 35-year-old earning S$10,000 borrowing with a 60-year-old earning S$5,000 has an IWAA of (35 × 10/15) + (60 × 5/15) = 43.3 years.

Maximum tenure for a private property bank loan is 35 years, but two LTV cliffs exist: any tenure beyond 30 years, or that runs past the youngest borrower's age 65, cuts the LTV by 5 percentage points (from 75% down to 55% on the first property). Adding a young, lower-earning co-borrower does not always help — the income weighting determines whether you cross the cliff. This is one reason couples often consider decoupling case study arrangements before an upgrade.

LTV: The Other Ceiling

Even if your TDSR allows a larger loan, the Loan-to-Value (LTV) cap sets an absolute maximum on the loan as a percentage of the lower of purchase price or valuation.

• First property, no outstanding home loan: 75% LTV. Down payment 25%, of which at least 5% must be cash.
• Second property: 45% LTV. Down payment 55%, minimum 25% cash.
• Third or subsequent: 35% LTV. Down payment 65%, minimum 25% cash.
• Tenure beyond 30 years or past age 65: Each LTV tier drops by 5 percentage points.

HDB upgraders need to think about timing. If you are still on the title of the HDB flat when the private property's Option to Purchase is exercised, the bank treats the new loan as a second-property loan — 45% LTV, not 75%. Selling the HDB first, executing simultaneous completion, or decoupling ownership are the three standard plays. None of them work as last-minute fixes; sequence matters.

Worked Example: S$15,000 Income, S$2M Condo

At a 4% stress floor, the qualifying instalment is roughly 60% higher than the actual outflow at a 1.65% loan rate. On a S$2M property, that gap can swing the qualifying loan by S$300,000+.

Take a Singapore Citizen couple, primary borrower 38, co-borrower 36, joint gross income S$15,000, no existing debts, looking at a S$2,000,000 first private property:

For this couple, LTV is the binding constraint — their TDSR has another S$220,000 of headroom. Add a single S$80,000 car loan at S$1,400/month, however, and TDSR becomes the binding constraint, dragging the qualifying loan below S$1.45M. That is the swing buyers under-estimate.

ABSD: The Cash Number TDSR Cannot Help With

TDSR sizes your loan. Additional Buyer's Stamp Duty (ABSD) sizes your cash. ABSD cannot be financed; it must be settled in cash within 14 days of the Sale & Purchase Agreement.

• Singapore Citizen, 1st property: 0% ABSD
• Singapore Citizen, 2nd: 20% ABSD
• Singapore Citizen, 3rd or more: 30% ABSD
• PR, 1st / 2nd / 3rd: 5% / 30% / 35% ABSD
• Foreigner, any property: 60% ABSD

On a S$2M second property bought by a Singapore Citizen, ABSD alone is S$400,000 in cash — on top of the 25% minimum cash down payment for a second-property LTV of 45%. Buyer's Stamp Duty (BSD) on the same property adds roughly S$64,600 more. Treat these as fixed inputs to the upgrade plan, not afterthoughts.

What To Do Before You Sign the OTP

An In-Principle Approval (IPA) is the only document that converts theory into a confirmed loan number. It is free, valid for 30 days, and based on your real income documents, real debts, and a real property quantum — all stress-tested at 4%. Run a sanity check first with the TDSR/MSR affordability calculator, then collect IPAs from at least three lenders so you can compare quantum and rate side by side.

If you are weighing fixed versus floating, our fixed vs SORA comparison walks through the trade-off at 2026 spreads. Already a private owner thinking about timing your next move? See when to refinance — TDSR is reassessed at every refinancing event, so the mechanics in this article apply there too.

Further Reading

• Singapore Mortgage Free Report — Dan's complete TDSR + MSR + ABSD + LTV stack with worked private and HDB examples in one downloadable PDF
• MAS 4% stress test — how the floor rate is derived and applied across every Singapore home loan
• best loan for condo / private property — package selection for first-time private buyers
• using CPF OA for property — OA withdrawal limits, BRS, and accrued interest mechanics
• HDB loan vs bank loan — the MSR/TDSR contrast spelled out for HDB buyers
• equity / cash-out loan — for owners with paid-down private property looking to recycle capital
• MAS: TDSR for Property Loans — the official rules, methodology and worked examples
• MAS: SORA — the benchmark behind floating-rate packages

Nexus Mortgage SG is an independent Singapore mortgage brokerage. This article is general information, not financial advice. Figures reflect April 2026 market conditions and MAS rules in force at the time of writing; both are subject to change. Verify current rules at MAS: TDSR for Property Loans and IRAS: ABSD before transacting.