Almost every resale HDB buyer I speak with has done the math on their loan quantum and their CPF balance, but far fewer have worked out how much actual cash they need to have sitting in a bank account before the deal even gets to completion. CPF and your housing loan cover a large part of the purchase, but there are several payments along the way that must be made in cash first, sometimes with only a day or two of notice. This post walks through exactly where those cash requirements come from, so you are not caught off guard midway through a transaction.
Why cash and CPF are not interchangeable at every stage
A lot of first-time resale buyers assume that because they have healthy CPF Ordinary Account savings, they are financially ready to transact. The reality is that CPF withdrawals for property are not instant. Each use of CPF requires HDB or your bank to process a request, and this takes time, sometimes longer than the payment deadline you are working against. That gap between when a payment is due and when CPF funds can actually be released is where cash steps in.
In practice, this means you often pay certain amounts out of pocket first and get reimbursed from CPF later, rather than CPF paying directly at the point of need. If your cash reserves are thin, this timing mismatch can become stressful right when you should be enjoying the milestone of securing your flat.
The option fee and exercise deposit are cash, full stop
When a seller grants you the Option to Purchase, you pay an option fee of up to one thousand dollars, and this must be cash, paid directly to the seller. There is no CPF or bank loan involvement at this stage because the loan has not even been approved yet.
When you exercise the option, typically within three weeks, you pay a further deposit to bring the total upfront payment to about five percent of the agreed price. Some buyers are able to use CPF for part of this if their CPF withdrawal has already been processed in time, but many end up paying this in cash first because the approval and valuation processes have not caught up yet. For a five hundred thousand dollar flat, that five percent works out to twenty five thousand dollars, a sum you should have available in liquid cash well before you start viewing flats seriously, not scrambling to raise after you have found the one you want.
Cash Over Valuation still catches buyers off guard
HDB resale valuations are now typically requested only after you have exercised the option, which means you commit to a price before you know exactly what the flat is valued at. If the agreed price comes in higher than the eventual valuation, that difference, commonly called Cash Over Valuation or COV, must be paid entirely in cash. Neither your CPF nor your bank loan can cover this portion because financing is calculated against the valuation, not the purchase price.
In a market where certain flats, especially those in mature estates or with unusual attributes like high floors or unblocked views, attract competitive bidding, COV can add a meaningful five figure sum to your cash requirement. Before you decide how much to offer above asking, it is worth having an honest conversation with your agent about recent comparable transactions so you are not agreeing to a price without understanding the cash exposure it creates.
Stamp duty, legal fees and the paperwork you tend to forget
Buyer’s Stamp Duty is payable within fourteen days of exercising the option, and while it can eventually be paid using CPF, the reimbursement process again takes time. Many buyers pay this in cash upfront and claim it back from CPF afterward, so you should have this sum set aside and accessible rather than assuming CPF will simply handle it on the due date.
On top of that, factor in conveyancing legal fees, which run into the low thousands depending on your lawyer, plus any fire insurance and administrative charges HDB levies during the resale process. None of these are large individually, but together they add up to a cash buffer beyond just the deposit and stamp duty, and it is the kind of detail that gets overlooked when buyers focus purely on the headline purchase price.
Building a realistic cash buffer, not just a bare minimum
Beyond the transaction itself, most families underestimate the cash needed in the weeks after key collection. Renovation deposits, moving costs, and basic furnishing typically require cash on hand well before any renovation loan or CPF grant disbursement comes through. If your entire liquid savings goes toward the option, deposit, COV and stamp duty, you may find yourself house rich and cash poor exactly when you need flexibility the most.
My advice to most upgraders and first-time resale buyers is to work backward from a target flat price, map out each of these cash milestones on a timeline, and keep a buffer beyond the theoretical minimum. It is far easier to plan this before you start viewing units than to discover the gap after you have already fallen in love with a flat.
If you are planning a resale HDB purchase and want a clear picture of your actual cash outlay before you start viewing flats, feel free to reach out to me on WhatsApp or drop me a message. I am happy to walk through the numbers with you based on your specific budget and timeline, no obligation either way.