HDB Upgrade Affordability
For existing HDB owners upgrading to a private property or a second subsidised HDB flat (BTO/SBF): your existing flat's sale proceeds and CPF refund, any resale levy, and affordability on the next property. All calculations run in your browser — nothing you enter here is transmitted or stored.
Property Type
HDB and EC loans are both subject to MSR and TDSR; Private is TDSR only. For the LTV tenure/age limits in Max Loan Quantum below, EC is grouped with Private, not HDB — MAS Notice 632 treats "EC" and "HDB Flat" as separate definitions, and HDB's tighter LTV/tenure rules are written specifically for "HDB Flat."
Property & Loan
Borrower(s)
Existing Loans & Debts
Result
Stress-test rate = the higher of MAS's floor rate (4%) or your quoted rate above.
Estimate only — (stressed repayment + existing debts) ÷ gross monthly income, per MAS's floor rate, source mas.gov.sg, as-at 6 Jul 2026. Checked against MAS's 55% TDSR ceiling: within the limit, with 7.77% of headroom remaining. Source: mas.gov.sg — "Calculating TDSR Thresholds" / "Rules for New Housing Loans" (page's own last-revised date: 16 Dec 2021), as-at 13 Jul 2026. Confirm your exact eligibility with your bank or a licensed professional — this is not financial advice.
Max Loan Quantum
Estimate only — the lower of the income-constrained amount (stress-tested at 4%, per mas.gov.sg — "Calculating TDSR Thresholds" / "Rules for New Housing Loans" (page's own last-revised date: 16 Dec 2021), as-at 13 Jul 2026) and the LTV-constrained amount (per mas.gov.sg — "Loan Tenure and LTV Limits" (for OTPs granted on/after 6 Jul 2018), as-at 13 Jul 2026). Confirm your exact eligibility with your bank or a licensed professional — this is not financial advice.
Assumptions used in this estimate:
- Monthly repayment uses the standard amortization formula on the loan amount, your entered tenure, and (for the first figure) your quoted rate.
- The stress-test always uses the higher of MAS's floor rate (4%) or your quoted rate — never below the floor, regardless of what rate you enter.
- MSR is only computed and shown for HDB and EC. Private property loans are TDSR-only, as per MAS rules.
- LTV % mode (in the loan amount field above) is a plain price-percentage input convenience for the TDSR/MSR section, separate from the actual MAS LTV tier applied in Max Loan Quantum below.
- For LTV/tenure limits, HDB uses the tighter "HDB Flat" thresholds (25yr, 30yr cap); EC uses the same thresholds as Private (30yr, 35yr cap) — per MAS Notice 632, definitions (g) "EC" and (i) "HDB Flat" are separate, and the tighter rules (para 22, para 30(t)) are written specifically for "HDB Flat," not EC. EC is grouped with HDB for MSR only, not for LTV/tenure.
- The lower LTV tier triggers if your tenure exceeds your property type's threshold (25yr for HDB, 30yr for EC/Private), OR if your age plus tenure exceeds 65 — whichever applies first.
- Entity/shell-company buyers (flat 15% LTV) are out of scope for this calculator — it assumes an individual borrower.
- Joint applications sum both borrowers' incomes for TDSR and MSR — per MAS Notice 645, para 4(b) (TDSR) and para 6 (MSR), as-at 14 Jul 2026: both are a plain aggregate of each Borrower's gross monthly income, not a weighted formula (unlike the IWAA used for the LTV age check below).
- The LTV age check uses the Income-Weighted Average Age (IWAA) for joint applications, per MAS Notice 632, footnote 4 — not a simple average of the two ages.
HDB Upgrade: Sale, Levy & Affordability
Your Existing HDB Flat
What Are You Buying?
Target Property
Result
CPF refund = principal × 2.5% compounded annually for 10 year(s) — an approximation of CPF's actual (more granular) computation, for planning purposes only. Source: cpf.gov.sg (CPF Ordinary Account interest rate — legislated floor, reviewed quarterly), as-at 14 Jul 2026. Refund is capped to available sale proceeds — a shortfall requiring cash top-up is not modeled. Confirm your exact figure with CPF Board or a licensed professional.
Not applicable — the resale levy only applies when buying a second subsidised HDB flat (BTO/SBF), not private property or a resale flat.
Remaining lease covers the youngest CPF-using owner to age 95 — full valuation/purchase-price cap applies, no pro-ration.
Mortgage/TDSR max loan quantum (above) + net cash proceeds from selling your existing flat + CPF usable for the target property − resale levy (if applicable). Confirm your exact eligibility with your bank, HDB, or a licensed professional — this is not financial advice.
Assumptions used in this estimate:
- CPF refund is compounded annually at the CPF Ordinary Account rate — a straight-line approximation of CPF's actual (more granular, date-based) computation, for planning purposes only.
- CPF refund owed is capped to your available sale proceeds (selling price minus outstanding loan); if it is zero or negative, CPF refund owed is $0 with no cash top-up modeled. This calculator does not model a shortfall scenario where accrued CPF principal and interest exceed available proceeds.
- Age-55+ Basic/Full Retirement Sum set-aside mechanics and the pre-2013 CPF refund exemption are out of scope — this calculator targets younger upgraders for whom neither typically applies.
- HDB resale levy only applies when buying a second subsidised HDB flat (BTO/SBF). Deferred-payment interest (5% p.a., if you defer the levy to a later HDB purchase) is not modeled — a known gap, not silently assumed away.
- CPF usable for the target property reuses the existing CPF Housing Usage resolver unmodified, including its refusal to estimate a number for the pro-rated short-lease case (remaining lease under the age-95 requirement but at least 20 years) — CPF has not published a formula that reproduces its own worked example.
- Target purchase price is prefilled from the Mortgage/TDSR max loan quantum plus this flat's net cash proceeds, as a starting estimate — not a confirmed budget.
- This calculator does not compute anything for target properties with a remaining lease under 40 years — by design, not an oversight.