HDB Concessionary Loan vs Bank SORA Mortgage Calculator
Compare HDB Concessionary Loan (2.6%, 100% CPF downpayment) vs Commercial Bank SORA Mortgage (mandatory 5% cash, lock-in fees) side-by-side.
Compare HDB Concessionary Loan (2.6%, 100% CPF downpayment) vs Commercial Bank SORA Mortgage (mandatory 5% cash, lock-in fees) side-by-side.
Compare HDB Concessionary Loan (2.6%, 100% CPF downpayment) vs Commercial Bank SORA Mortgage (mandatory 5% cash, lock-in fees) side-by-side. Calculate exact, penny-accurate projections compliant with 2026 CPFB • IRAS • Monetary Authority of Singapore (MAS) • HDB standards using Calconova's deterministic IEEE-754 (Decimal.js) calculation engine with instant breakdowns.
Current 75% LTV regulations & SORA benchmark
LTV = 75\% \\
Downpayment_{HDB} = 25\% \quad (100\%\ CPF\ OA\ Allowed,\ \$0\ Mandatory\ Cash) \\
Downpayment_{Bank} = 20\%\ CPF\ OA + 5\%\ \mathbf{Mandatory\ Cash} \\
PMT = Loan \times \frac{r(1+r)^N}{(1+r)^N - 1}HDB concessionary loans are pegged at CPF OA rate + 0.1% (stable 2.60%). Their key advantage is that the full 25% downpayment can be paid via CPF OA (zero cash outlay required). In contrast, Bank loans mandate a strict minimum 5% cash downpayment, have lock-in exit penalties, and switching to a bank loan is an irreversible one-way route.
Pre-calculated MAS, CPFB, IRAS & HDB benchmark tables across Singapore rates and tiers.
All calculations, amortizations, and scenario projections displayed on this page are strictly for informational and educational purposes. Nothing herein constitutes investment, financial, tax, or legal advice. Actual CPF interest rates, ABSD criteria, COE prices, and bank mortgage rates may vary. Calconova explicitly disclaims all liability for any decisions taken based upon these calculations. Consult a MAS-licensed financial adviser or IRAS/CPF officer prior to executing financial commitments.
Downpayment flexibility and security! An HDB concessionary loan allows the entire 25% downpayment to come from CPF OA with S$0 compulsory cash. It also has no lock-in period or early prepayment penalties, whereas bank loans require at least 5% cold cash downpayment and impose early repayment fees.
Strictly NO! HDB enforces a strict one-way rule: once you refinance your HDB flat to a commercial bank loan, you can NEVER switch back to an HDB concessionary loan for that flat.
Yes. In low interest rate environments where 3M SORA falls significantly, bank mortgage rates can drop below 2.60%, resulting in lower monthly installments. However, during elevated global rate cycles, HDB's rock-solid 2.60% rate acts as a guaranteed protective ceiling.
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