HDB Upgrade Path Calculator (2026)
Model the complete financial cost of upgrading your HDB flat — resale levy, CPF accrued interest refund, ABSD if buying before selling, grants, down payment, and monthly instalment. Compare sell-first vs buy-first side by side.
Current flat details
Complete all 3 steps to see your upgrade path cost breakdown.
Step 1 of 3 — Your Current Flat
Disclaimer
This calculator provides estimates and should not be viewed as a prediction. Actual stamp duty, grant amounts, loan eligibility, and monthly payments may vary due to changing interest rates, policy changes, and individual eligibility. It is not intended to be your sole source of financial guidance.
Rates last verified: 30 May 2026.
Verify with HDB (https://www.hdb.gov.sg). Full disclaimer at smartcalculator.sg/disclaimer.
The hidden costs of upgrading an HDB flat
Resale Levy
$15,000–$50,000 if you buy a second subsidised flat (BTO/EC). Zero if you buy resale HDB.
CPF Accrued Interest
The 2.5% p.a. interest your CPF OA "would have earned" goes back to your CPF — reducing your spendable cash.
ABSD (Buy-First only)
20% of purchase price for SC buying a 2nd property. Remissible if you sell within 6 months, minus $25k admin.
Frequently asked questions
What is the HDB resale levy and when does it apply?
The HDB resale levy is payable when you buy a second subsidised flat (BTO, SBF, or new EC) after disposing of your first subsidised HDB flat. It does not apply if you are buying a resale HDB from the open market. The levy ranges from $15,000 (2-room) to $50,000 (Executive/EA) for family schemes, and is lower for singles. It can be paid in cash or deducted from your sale proceeds.
What is ABSD and does it apply when I upgrade my HDB?
Additional Buyer's Stamp Duty (ABSD) applies if you own more than one residential property at the time of purchase. For Singapore Citizens, ABSD on a second property is 20% of the purchase price. If you sell your current flat before buying the new one (sell-first), you own only one property at purchase and pay zero ABSD. If you buy first (buy-first), you pay the full ABSD upfront — but a married couple with at least one Singapore Citizen can get it refunded in full (IRAS deducts no administrative fee) by selling their current home within 6 months of the new purchase. The catch: you must have the cash to front the ABSD, and singles are not eligible for the remission.
What is CPF accrued interest and why must I refund it?
When you sell your HDB flat, you must refund to your CPF Ordinary Account the principal amount you withdrew for the purchase, plus the accrued interest that would have been earned at the OA rate (2.5% p.a.) over the holding period. This is not a cost you pay to anyone — it goes back to your own CPF OA, but it reduces your net cash proceeds from the sale. The refunded amount can be used for your next property purchase.
Should I sell my HDB first or buy a new flat first?
Sell-first is the safer and usually cheaper option. You avoid having to front the ABSD entirely (20% of the purchase price for a Singapore Citizen's second property) and eliminate the risk of owning two properties if the sale falls through. Even though a married couple can have the ABSD fully refunded by selling within 6 months, buy-first still ties up that large sum in cash for months and forfeits the refund if the deadline is missed — and singles get no remission at all. Buy-first makes sense mainly when you must secure a specific property immediately or cannot cope with temporary accommodation. The main downside of sell-first is needing interim housing between transactions.
What HDB grants can I get when upgrading?
Grants depend on whether you are a first-timer and what you are buying. The Enhanced Housing Grant (EHG) is available for first-timers buying BTO or resale HDB with household incomes up to $9,000/month — up to $120,000 for very low income households. The CPF Housing Grant (resale only) gives $80,000 for families and $40,000 for singles buying resale HDB up to 4 rooms. The Proximity Housing Grant ($20,000–$30,000) is available if you buy within 4km of your parents. Grants are not available for EC or private property.
Related Calculators
Additional Buyer's Stamp Duty (ABSD) Calculator
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Calculate the accrued interest you must refund to your CPF OA when you sell a property.