"Signing an OTP" gets used loosely to describe two very different moments, and the consequences of backing out are completely different depending on which one you mean. Getting this distinction right matters more than almost anything else in the early stage of a purchase.
Stage one: holding the option, before you exercise
When a seller grants you an OTP, you pay the option fee, 1% for private resale, up to $1,000 for HDB, and you now hold the exclusive right to buy within the option period. At this stage, you have not yet committed to the purchase itself, only paid for the right to decide. If you back out here, by simply not exercising, the option lapses, the seller keeps the fee, and the matter ends. You owe nothing further.
Stage two: after you exercise
Exercising is a deliberate, separate step, you sign the acceptance copy of the OTP and pay the exercise amount, 4% for private resale on top of the earlier 1%, or the balance toward the combined $5,000 cap for HDB. The moment you do this, the option becomes a binding Sale and Purchase Agreement. This is the real point of no return in the transaction. Backing out after exercise is not simply letting something lapse, it is breaking a signed contract.
What backing out after exercise can cost you
The standard position is that your deposit, the combined option and exercise payments, is at risk of forfeiture to the seller as compensation. Depending on how the contract is drafted and the circumstances, the seller may also pursue a further claim if they resell the property for less than your agreed price, or seek other damages for the breach. The exact consequence always depends on the specific contract terms and circumstances, so this is a point where a lawyer's advice on your actual document matters more than general guidance.
What commonly goes wrong
Buyers sometimes treat exercising as a formality, the natural next step after paying the option fee, without registering that it is the moment everything becomes binding. A bank valuation coming in low, a change in personal circumstances, or a better property appearing are common triggers for wanting to back out, but none of them undo the contract once exercise has happened. The time to walk away cleanly is before exercise, not after.
What to check before you exercise
- Confirm your loan is actually approved, not just in principle, and at the quantum you need, before signing the exercise copy.
- Have your lawyer review the Sale and Purchase Agreement terms before exercise, not after, since this is your last chance to raise concerns cheaply.
- Be certain about the property and the price. Exercising is meant to be final, treat it that way.
Frequently asked questions
What is the actual difference between signing and exercising an OTP?
Signing usually refers to the seller granting you the option document, which you hold but have not yet acted on. Exercising means you sign and return the acceptance copy with the exercise payment, which is the step that creates a binding contract.
What do I lose if I back out after exercising?
At minimum, your 5% deposit, the 1% option fee plus the 4% exercise payment for a private resale, is at risk of forfeiture. The seller may also have a claim for further losses if the property sells for less to someone else, though the exact outcome depends on the contract terms, a lawyer should confirm your specific exposure.
Is there ever a way to back out after exercising without losing money?
Only if the contract itself contains a condition that lets you exit, such as a properly drafted financing contingency, or if the seller agrees to mutually terminate. Absent either, exercising is treated as your final commitment point.
Unsure whether you have exercised yet?
Winfred walks you through exactly where you stand in the process before you sign anything else, so you know what is still reversible and what is not.
Book a free 30 minute callWinfred Quek is an Associate Marketing Consultant at Crestbrick Pte Ltd (CEA Licence No. L31010886H). CEA R073319H. This page is for general information only and does not constitute financial, investment, or legal advice. Rates and rules reflect the position as at 9 Aug 2026; verify current figures with IRAS, HDB, or MAS before making any decision.