HDB grants can reduce the effective purchase price of a resale or BTO flat by $15,000–$110,000 — but each grant has income ceilings, property conditions, and citizenship requirements that disqualify many buyers. Knowing which grants you qualify for before starting your flat search determines how much you can realistically borrow and what your net down payment will be. Many buyers discover grant ineligibility only after signing the OTP — when it is too late to renegotiate the purchase price.
The single most important number this calculator reveals is your total eligible grant quantum — the combined cash subsidy that reduces your effective flat cost. For a first-timer SC couple earning $4,500/month buying a 4-room resale flat in a non-mature estate, the combined EHG ($80,000), AHG ($35,000), and PHG ($30,000 if eligible) can total $145,000 — transforming a $500,000 resale flat into a net cost of $355,000. This grant total is the ceiling on how much you can offset against the purchase price, and it directly determines your minimum cash down payment and CPF usage.
The most common mistake buyers make is applying only the grants they have heard of, missing others they qualify for. The Enhanced CPF Housing Grant (EHG) replaced the AHG and SHG in 2019 — but the AHG and SHG still apply to applications submitted before the EHG rollout. The Proximity Housing Grant (PHG) is consistently overlooked by resale buyers who live within 4km of parents but have not verified eligibility. The calculator runs all applicable grants in parallel so you see your maximum eligible total.
Use this calculator alongside the BTO vs Resale Calculator and the HDB Loan Calculator to build a complete picture of your housing costs before committing to a flat.