Advance care planning (ACP) is a voluntary, structured conversation in which you record your values, what matters to you in serious illness, the kind of care you would and would not want, and who you would trust to speak for you if you could not speak for yourself. It is usually facilitated by a trained ACP facilitator and written up so it can be shared with your care team.
The single most important thing to understand is that an ACP is not a legally binding document. It guides doctors and family. It does not bind them the way an Advance Medical Directive does, and it does not give anyone legal authority to decide on your behalf the way a lasting power of attorney does. That is not a flaw: it is what ACP is for. But it does mean an ACP on its own is rarely enough.
ACP, AMD and LPA: three different instruments
These three are constantly confused, including by people who have already made one of them. They answer three different questions: what would you want, what will you refuse, and who decides.
| Advance Care Plan (ACP) | Advance Medical Directive (AMD) | Lasting Power of Attorney (LPA) | |
|---|---|---|---|
| What it does | Records your values, care goals and preferences, and who you would want consulted | A statutory declaration refusing extraordinary life-sustaining treatment | Appoints a person to make decisions for you if you lose mental capacity |
| Legally binding? | No, guidance only | Yes, within its narrow scope | Yes, the donee has legal authority |
| Scope | Broad: medical, personal, spiritual, practical | Very narrow: terminal illness, unconscious or incapable, extraordinary life-sustaining treatment | Personal welfare and/or property and affairs |
| How it is made | A facilitated conversation, documented | A prescribed form witnessed by a doctor and one other witness | A prescribed form certified and registered with the Office of the Public Guardian |
| When it operates | Whenever you cannot express your wishes | Only when the narrow statutory conditions are met | Only on loss of mental capacity |
An Advance Medical Directive is deliberately narrow. It applies only where you are terminally ill and unconscious or otherwise incapable of expressing your wishes, and it refuses extraordinary life-sustaining treatment that would only prolong the dying process. It says nothing about pain relief, nursing care, where you would like to be cared for, or whether you would want to be resuscitated in circumstances short of terminal illness.
A lasting power of attorney is about authority rather than content. It lets you choose, in advance, who steps in, whether for personal welfare, for property and affairs, or both, if you later lose mental capacity. The donee then has to act in your best interests under the Mental Capacity Act 2008, and an ACP is exactly the kind of evidence that tells them what your best interests actually look like.
Why one of them is not enough
Take a realistic example. Someone has an AMD. They then have a severe stroke, not terminal, but they cannot communicate and will need long-term care. The AMD does nothing here; its conditions are not met. Without an LPA there is nobody with authority to decide where they live or consent to treatment, and the family has to apply for deputyship through the court, which takes months. Without an ACP, nobody knows whether this person would have wanted aggressive rehabilitation, a nursing home, or to be cared for at home.
Each instrument covers a gap the others leave open. Together they are coherent. Individually, each of them is a partial answer.
Who should have the conversation, and when
The honest answer is: earlier than most people do. The conversation is far easier when nobody is in crisis, and the plans that actually get followed tend to be the ones made calmly.
The groups who most obviously benefit:
- Anyone with a serious or progressive illness: cancer, organ failure, dementia, advanced frailty. Here the conversation becomes specific: what treatments, what trade-offs, what would count as a good outcome.
- Older adults generally, particularly those living alone or whose adult children are overseas.
- Anyone facing major surgery, where a short window of incapacity is foreseeable.
- People whose family would disagree. If your children hold different views, or you have a blended family, recording your wishes protects them from having to argue about you.
- Anyone who has just watched a relative die without a plan. That experience is usually what prompts the call.
You do not need a diagnosis, and you do not need to be old. What you need is a willingness to say out loud what you would want, and someone who will write it down properly.
Where advance care planning is offered
ACP in Singapore is run as a national programme coordinated by the Ministry of Health, and is offered through public healthcare institutions such as hospitals, polyclinics, community hospitals and nursing homes, as well as through community partners and some social service agencies. Facilitators are trained specifically for this: nurses, medical social workers, doctors and trained community volunteers.
The practical route in is usually one of three: ask your own doctor at the next appointment, ask the medical social work department if you or a family member is already under hospital care, or contact your polyclinic. Because the programme details and participating providers change over time, check the Ministry of Health’s current information rather than relying on what a friend did five years ago.
The conversation itself typically runs 45 minutes to a couple of hours, sometimes across more than one session. You are encouraged to bring the person you would want to speak for you, usually called your nominated healthcare spokesperson, because the point is partly that they hear it from you directly.
How the plan is recorded and shared
The facilitator documents the conversation and the plan is entered into the national electronic record system used by healthcare institutions, so that a treating team can retrieve it when it matters, including at another hospital, at 3am, when you are not able to explain anything. This is a real advantage over a document sitting in a drawer at home.
Two practical points follow. First, tell your family that an ACP exists, and tell your named spokesperson explicitly that you have named them. Second, keep your own copy. Documents that only exist in a system nobody thinks to check are functionally invisible.
Reviewing your plan after a major life change
An advance care plan reflects who you were and what you valued at the time you made it. Certain events make it stale immediately:
- A divorce or separation, where your spouse is very likely the named spokesperson.
- A new diagnosis, or a significant change in prognosis.
- The death or serious illness of the person you named.
- Remarriage, or a new long-term partner.
- A move into residential care.
Divorce deserves particular attention. It does not automatically strip an ex-spouse out of your medical arrangements, and the gap between separation and final judgment is often long. If you are separating, treat your ACP as part of the same review as your will, your CPF nomination, your insurance nominations and your LPA. The whole list is set out in the estate planning checklist, and the wider picture of wills, probate and capacity planning sits alongside it. An LPA in particular has its own revocation process and does not fall away just because a marriage has.
When there is no plan at all
This is the situation most families actually find themselves in. Someone is admitted, they cannot communicate, and nobody knows what they would have wanted.
What the medical team will do is look for a registered AMD, look for a registered LPA or a court-appointed deputy, and otherwise consult the people closest to the patient about what the patient would have wanted. Note the framing: not what the family wants, but what the patient would have wanted. Under the Mental Capacity Act 2008, decisions for someone who lacks capacity must be made in that person’s best interests, taking into account their past wishes, beliefs and values so far as these can be ascertained.
Practical things a family can do:
- Bring anything the person wrote down: letters, notes, religious instructions, an old AMD or LPA copy.
- Ask the hospital’s medical social worker to convene a family conference rather than trying to resolve disagreement in a corridor.
- Be specific about things the person actually said, and when. “He always said he never wanted to be on a machine” is evidence; “we think he’d want us to keep fighting” is a preference of the speaker’s.
- Where capacity itself is disputed, understand how a mental capacity assessment works before arguing about the decision.
- If decisions will be needed over months rather than days and there is no LPA, take advice early about deputyship, because the application takes time and the need does not wait.
Families who have been through this once almost always go and do their own advance care planning afterwards. The conversation is uncomfortable for about twenty minutes. Not having had it can be difficult for years.
