The sentence patients and their families say most often is not "I had never heard of it" but "I did not think it would cost this much" and "I did not think it would be me". This article does not repeat how expensive critical illness is — we have covered that in our articles on the cost of critical illness and on surviving but running out of money. It answers a deeper question: why are we surprised at all, when the information is everywhere? Because once you understand the mechanism, you can actually guard against it.
Mechanism 1: our brain treats it as someone else's problem
Psychologists call it optimism bias: most people rate their own risk as below average, even though the statistics show a high chance of facing a serious illness at some point in life. We absorb those statistics as information about a population, not about ourselves. The counter: change the question from "will it be me?" to "of the twenty relatives, friends and colleagues around me, how many will face this?" The second question is much harder to dismiss — and one of them may be you.
Mechanism 2: we see only the treatment cost, which is the tip of the iceberg
The visible damage — the hospital bill — is met by health insurance or state entitlements, so people feel it is handled. But the larger part below the surface is income stopping for a year, costs that come with no invoice, and a career that may never be quite the same. Nothing sends an advance warning, so it always arrives as a surprise. The counter: calculate the cost of one year off work as a real number — income lost plus twelve months of household expenses. That figure is the size of the surprise waiting for you if you do not prepare.
Mechanism 3: we delay because there is no sign yet — which is the only time we can act
A critical illness sends no advance notice, but critical illness insurance only accepts people who have no sign of one. This is the contradiction that punishes procrastination hardest: the day it feels necessary is the day it is no longer possible. The counter: set a deadline instead of a feeling — "deal with this before the end of this quarter" — or tie it to an event such as a birthday or the day your bonus arrives. Behavioural science agrees: a clear deadline beats a vague intention every time.
A four-layer formula against the surprise
- Know your own number — the cost of one year off work, calculated as above.
- A base for treatment costs — real health insurance limits, plus state entitlements you have checked and know where to use.
- A lump sum against the surprise — critical illness cover of three to five years of income, or liquid assets set aside to the same value (choose whichever suits your circumstances, using the test in our article on whether to add more).
- Detect it early — annual health checks and screening appropriate to your age, because a condition found early is always a smaller surprise, both physically and financially.
In short
A critical illness surprises your savings not because the information is hidden, but because our minds are built to look past it. Three mechanisms: thinking it happens to other people, seeing only the tip of the iceberg, and delaying until the window closes. Once you recognise them, you can counter them with a real number, a real deadline, and the four layers above. If you would like to start by calculating your own cost of a year off work, message us on LINE and we will do it together — five minutes for the answer.
This article was inspired by material from the Thai Financial Planners Association (TFPA) and has been entirely rewritten.