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How Much Home Can You Afford?

Updated 25 Oct 2026 SG Home Data Editorial Team
Short answer

Your maximum loan is set by the tighter of TDSR (55% of gross income, minus other debts) and, for HDB flats and new ECs, MSR (30% of income). The repayment room is converted to a loan at a 4% stress rate, then capped at 75% loan-to-value.

On this page4 sections · tap to jump
  1. 01How it is calculated
  2. 02Worked example (illustrative)
  3. 03Limits of this estimate
  4. 04Related guides

Enter your income, debts and tenure to estimate the largest loan and price the official rules allow — the tool does the TDSR, MSR, stress-rate and LTV maths for you.

Tool

Affordability estimator (TDSR / MSR)

Property type
HDB flats and new ECs are also capped by the 30% MSR; private homes face TDSR only.
TDSR room (55%)—
MSR cap (30%)—
Max monthly repayment —
Estimated max loan—
Estimated max price—
Downpayment (25%)—

Loan capped at 75% loan-to-value for a first housing loan. Figures are an estimate, not a loan offer.

Based on MAS TDSR & LTV rules; HDB MSR. As of October 2026. Estimate only — confirm the current rules at MAS and HDB. Not financial advice.

How it is calculated

The estimate chains four official rules:

  • TDSR (55%). The Monetary Authority of Singapore (MAS) caps all your monthly debt repayments at 55% of gross monthly income. Your room for a mortgage is 55% × income − other monthly debts (MAS — Calculating TDSR).
  • MSR (30%). For HDB flats and new executive condos, HDB adds a Mortgage Servicing Ratio that caps the housing loan alone at 30% of income (HDB — Credit to finance a flat purchase). The binding repayment is the lower of the two caps.
  • Stress rate. The repayment room is turned into a loan using a medium-term stress rate — MAS uses the higher of 4% or the prevailing rate for residential purchase loans — via the standard annuity formula over your chosen tenure.
  • LTV (75%). A first housing loan is capped at 75% of price or value (MAS — LTV limits), so the estimated price is loan ÷ 0.75 and the downpayment is the remaining 25%.

Worked example (illustrative)

A household earning S$8,000/month with no other debts, buying an HDB flat on a 25-year loan at the 4% stress rate:

  • MSR cap (30%) = S$2,400/month — tighter than the TDSR room of S$4,400, so it binds.
  • Max loan ≈ S$454,686, max price ≈ S$606,248, downpayment (25%) ≈ S$151,562.

These are illustrative figures, not a loan offer; your actual limit depends on the bank’s assessment, the prevailing stress rate and your exact tenure.

Limits of this estimate

  • It does not include your actual cash and CPF savings, which may limit you before TDSR/MSR do.
  • It ignores grants, which lower the loan you need — see CPF housing grants.
  • Banks apply their own credit checks and some income types are “haircut” before counting. For the definitive figure, apply for an HDB Flat Eligibility (HFE) letter or an In-Principle Approval from a bank.

Sources

  1. Calculating TDSR for Property Loans — Monetary Authority of Singapore (as of October 2026)
  2. Rules for New Housing Loans: Loan Tenure and LTV Limits — Monetary Authority of Singapore (as of October 2026)
  3. Credit to Finance a Flat Purchase (MSR) — Housing & Development Board (as of October 2026)