What Is Cash Over Valuation (COV)? How COV Works for HDB Resale in Singapore (2026)

Figures checked on 2 October 2026.

Quick answer: Cash over valuation (COV) is the amount by which an HDB resale price exceeds the flat's official valuation. If you agree to pay $650,000 and HDB values the flat at $630,000, the COV is $20,000. You pay it in cash, because your HDB or bank loan and your CPF can only be used up to the lower of the price or the valuation. Since 10 March 2014, HDB values a resale flat only after the seller grants the Option to Purchase, so the price, and any COV, is agreed before anyone knows the valuation. Most buyers pay none: the median COV across all buyers has stayed at $0.

The first time most people hear "COV" is from an agent, usually halfway through a viewing, and usually as a number with no explanation attached. "Seller wants 15k COV." Fifteen thousand on top of what, exactly?

I am Winnie Lim, a licensed CEA agent, and I have this conversation with buyers and sellers every month. This guide covers what COV is, why it has to be paid in cash, when in the resale process it gets fixed, how much cash it takes, what to do when the valuation lands below your price, and what COV means if you are selling your flat to move up to a condo.

What does cash over valuation mean?

Cash over valuation is the part of an HDB resale price that sits above HDB's valuation of the flat. The Ministry of National Development defines it the same way: COV arises when the resale price is higher than the market valuation, and the difference can only be paid in cash.

The formula is one line:

COV = agreed resale price − HDB valuation

There are two other outcomes. If the price matches the valuation, the deal is "at valuation" and there is no COV. If the valuation comes in above the price, some agents call it cash under valuation. You still pay only the agreed price; the higher valuation simply means your loan and CPF cover more of it.

The term belongs mostly to HDB resale because HDB runs its own valuation for every resale flat bought with a loan or CPF. Private property has bank valuations instead, which I cover further down.

Why COV has to be paid in cash

COV is cash only because every source of housing finance is capped at the lower of the price or the valuation. Anything above that cap has no other way to be funded.

Three rules stack up here:

1. Your loan. An HDB housing loan and a bank loan for an HDB flat both go up to 75% of the lower of the price or the value. The agreed price could be $650,000; if the valuation is $630,000, the loan is worked out on $630,000.
2. Your CPF. HDB states that the valuation forms the basis for your CPF usage. Housing grants are credited into your CPF account, so they sit under the same cap.
3. Your stamp duty. Buyer's stamp duty (BSD) runs the other way. It is charged on the purchase price or the market value, whichever is higher. COV raises your stamp duty bill even though no lender will fund it.

That third point catches people. Paying $20,000 of COV on a $630,000 flat adds $600 to your BSD, so the true cost is $20,600 in cash. If you want to see what the loan itself looks like on these numbers, run them through our mortgage calculator.

When COV is agreed: the HDB resale timeline

You agree the price, including any COV, before HDB tells anyone what the flat is worth. That order was set on 10 March 2014. Before then, sellers obtained the valuation first and then negotiated COV with buyers on top of it, which pushed COV into nearly every deal.

Here is how a resale purchase runs today:

1. Agree the price. You and the seller settle on one figure, guided by recent transacted prices for similar flats.
2. Seller grants the Option to Purchase (OTP). You pay an option fee of between $1 and $1,000.
3. Submit the Request for Value. This is due by the next working day after the option date, through the HDB Resale Portal. The fee is $120 including GST. Buyers paying fully in cash, with no CPF or loan, do not need one.
4. Receive the valuation. HDB says the result is typically available within 10 working days. It stays valid for three months.
5. Decide and exercise the OTP. You have 21 calendar days from the option date, weekends and public holidays included. The option fee and exercise fee together cannot exceed $5,000.
6. Submit the resale application. Completion usually follows about eight weeks after HDB accepts the application.

Step 4 is the moment COV stops being a guess. Until the valuation arrives, the COV you agreed to is only an estimate based on the price you negotiated. For the mechanics of how HDB values a flat, see how HDB valuation works.

How much cash you need with COV: a worked example

The loan stays fixed while the price rises, so every dollar of COV comes straight out of your cash.

Take a four-room resale flat valued at $630,000. The buyer is a Singapore citizen buying a first property and takes a loan at 75% of the lower of price or value. Here is the same flat at four different prices:

BSD uses the IRAS residential rates in force since 15 February 2023: 1% on the first $180,000, 2% on the next $180,000 and 3% on the next $640,000. Legal fees, the option and exercise fees and the $120 Request for Value fee are not included.

The loan column never moves. The $157,500 downpayment can come from CPF if you have enough in your Ordinary Account, and with an HDB loan you can use CPF for all of it. With a bank loan, at least 5% of the valuation, $31,500 here, must be paid in cash. The COV column is cash in every case, sitting on top of that.

So a buyer taking a bank loan at a $40,000 COV needs at least $71,500 in cash before stamp duty. That is the figure I ask buyers to have ready before they start making offers, not after.

What if the valuation comes in lower than the price?

You have three options when the valuation lands below your agreed price: pay the gap as COV, go back to the seller, or let the OTP lapse. Which one makes sense depends on the size of the gap and how much you want the flat.

Pay the COV. If the gap is small and the flat is the one you want, this is the simplest route. Check the cash table above first, and remember the extra stamp duty.

Renegotiate. The valuation is now a hard number both sides can see. Some sellers will meet you partway, especially in a market where prices are flat or falling. Nothing obliges them to, so treat this as a conversation and not a demand.

Let the OTP lapse. If you do not exercise the OTP within the 21 days, you forfeit the option fee and the deal ends. Under HDB's rules that fee is capped at $1,000. That cost is small next to committing to a gap you cannot fund.

A valuation above your price works in your favour. Your loan and CPF are still capped at the price you agreed, so nothing changes for you, but you have confirmation that you did not overpay.

For context, paying COV is not the norm. MND has said repeatedly that the median COV across all buyers has stayed at $0. In a July 2021 answer, it said fewer than one in four recent resale transactions involved any COV, and about six in ten of those buyers paid $20,000 or less.

Is COV coming back? What the data shows

COV peaked during the 2021 resale rush and has eased since. The latest official figure is about 18% of buyers, and resale prices have fallen in each of the first three quarters of 2026.

HDB stopped publishing its valuations in 2014. The reliable COV figures since then come from answers given in Parliament by the Ministry of National Development:

Since that last answer in March 2024, no official COV figure has been released. For a current read I use the Resale Price Index (RPI). The RPI fell 0.1% in the first quarter of 2026 and 0.3% in the second. HDB's flash estimate on 1 October put the third-quarter change at minus 0.2%, a third straight decline. After the second dip, ERA's Eugene Lim called it the first time in nearly seven years that resale prices had softened in consecutive quarters. Volume has not collapsed: 7,528 flats changed hands in Q3 2026, up 5.2% from a year earlier.

The top end of the market has gone the other way. A record 491 flats changed hands for $1 million or more in Q2 2026, 7.8% of all resale deals. COV in 2026 is concentrated in a few towns and flat types, while the wider market has cooled. Be careful with any article quoting a single "typical COV" range for this year: there is no official source for one.

Selling your HDB to upgrade: what COV means for you

If you are selling, COV is money a buyer has to find in cash, so every dollar you ask above the valuation shrinks the pool of buyers who can afford you. In a market where prices have slipped for three quarters running, that matters more than it did in 2021.

Most buyers I work with have their CPF and loan sorted and a fixed cash buffer. A buyer with $50,000 in cash can absorb a $10,000 COV. The same buyer walks away from $40,000, however much they like the flat. Ask for a large COV and you are selling to a much smaller group, which usually means more weeks on the market.

Upgraders also tend to count COV twice: once as the price they hope to get, and again as cash for the next purchase. Your sale proceeds first go back to your CPF account (with accrued interest) and to clearing your outstanding loan. What is left is the cash you can use. If you plan a new-launch downpayment around a COV you never receive, the whole plan slips.

The better sequence is to price the flat against a valuation before you list it, plan the next purchase on that realistic figure, and treat any COV as a bonus. Our free HDB and condo valuation gives you an AI estimate checked by a licensed agent, with bank valuation ranges and nearby transactions, so you start from a number a buyer's bank will recognise. If the gap between your flat and a new launch is the question, read why the new-launch price gap is widening. For buyers of your flat, the new $16,000 HDB income ceiling has widened who qualifies for an HDB loan.

Winnie's take

If you are selling to upgrade, set your asking price from a valuation, not from the record sale two blocks away. A flat priced near its valuation draws buyers who can complete quickly, and a fast, clean sale usually does more for your next purchase than an extra $15,000 of COV that takes three months to find.

Does COV apply to condos and new launches?

COV works in a similar way for private resale property, but the valuation comes from the bank, not HDB. New launches bought from a developer have no negotiated COV, though a low bank valuation can still leave you with a shortfall.

Private resale. There is no official HDB valuation. Your bank values the property, and the loan is based on the lower of the price or that valuation. If you agree to pay more than the bank's figure, the gap works like COV and you fund it yourself. The OTP is structured differently too, usually a 1% option fee and a further 4% when you exercise. CPF use on private property is tied to the valuation as well, and going above that limit depends on your age, the remaining lease and the retirement savings you have set aside, so check with CPF Board before you count on it.

New launches. You buy at the developer's price list, so there is no COV to negotiate. If the bank later values the unit below your purchase price, the loan is still capped on the lower figure and you cover the difference. If you are buying a unit priced well above nearby resale, ask your banker about valuation early, before you commit to the payment schedule. You can compare current new launches side by side.

If you are moving the other way, from private property to a resale flat, the rules changed this year: the 15-month wait-out period has been removed.

How to keep COV down as a buyer

You can keep COV down by doing the price work before you make an offer, not after.

Start with recent transactions for the same block and flat type, and look at floor level and remaining lease, since a high floor in a newer block will not compare with a low floor in an older one. Decide on a walk-away figure before the viewing, including the most COV you would pay. Ask your bank for an indicative valuation where it offers one. And keep cash in reserve above what the table says you need, because the valuation will not always land where you hope.

You can also check what a flat is worth before you negotiate, which turns "the seller wants COV" from a guess into a number you can test.

Common questions about cash over valuation

Can I use CPF to pay COV?

No. For an HDB resale flat, CPF can only be used up to the lower of the price or the valuation. COV is the amount above that limit, so it has to be paid in cash. The same applies to housing grants, which are credited into your CPF account and follow the same cap.

Who do I pay the COV to, and when?

You pay the COV to the seller directly. It does not go to HDB or the bank. When you pay it is agreed between you and the seller, so put the amount and the timing in writing when the OTP is granted, and confirm the arrangement with your agent or lawyer.

Is COV refundable if the deal falls through?

If you do not exercise the OTP within the 21-day option period, the deal ends and you forfeit only the option fee, capped at $1,000 by HDB. Any COV that changed hands before the deal ended is a private matter between you and the seller, which is one more reason to agree the timing in writing.

Can I use an HDB housing grant to pay COV?

No. Housing grants such as the Enhanced CPF Housing Grant are credited into your CPF Ordinary Account and used toward the purchase price up to the valuation. They cannot cover the part of the price that sits above the valuation.

How long does an HDB valuation take?

HDB says the valuation is typically available within 10 working days of your Request for Value, which you must submit by the next working day after the option date. The result stays valid for three months. You see it before your 21-day option period ends.

Do I have to buy the flat if the valuation comes in lower than the price?

No. You can choose not to exercise the OTP within the 21 days. You lose the option fee, up to $1,000, but you are not bound to complete. You can also go back to the seller and try to renegotiate the price.

Does COV affect my buyer's stamp duty?

Yes. BSD is charged on the purchase price or the market value, whichever is higher. When you pay COV the price is the higher figure, so your stamp duty rises with it. On a $630,000 valuation, a $20,000 COV adds $600 in BSD.