Nadia Osman, 38, is a marketing manager earning $8,000 a month, and she takes home $6,400 after CPF. She is her household's main earner, with $60,000 in cash, $40,000 in MediSave and no critical illness policy. When a former colleague is diagnosed with cancer and stops work for two years, Nadia asks how much cover she would need.
Critical illness (CI) cover pays a lump sum on diagnosis of a covered illness, such as cancer, a heart attack or a stroke, while the insured person is alive. Life cover pays on death or total and permanent disability. The CI sum needs to cover lost income over the recovery period, plus treatment costs that MediSave and hospital insurance do not reach, less the cash the household already holds.
On Nadia's $96,000 a year, the gap is $46,000 for one year off work and $238,000 for three years. This brief works out her sum and what reduces it.
How Is Her Critical Illness Gap Worked Out?
The gap has four parts:
- Income over the recovery period, which is annual income multiplied by the years off work
- Treatment above MediSave, which is a treatment buffer the household sets, less the MediSave balance available for it, and never below zero
- Cash on hand that the household can spend straight away
- Payouts from CI policies or riders already held
CI gap = income × recovery years + treatment above MediSave, less cash and existing CI cover. A result below zero is read as zero.
MediSave appears only against treatment. It pays approved medical bills, but it never unlocks as income, so netting it against lost salary would overstate what Nadia's household can live on.
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How Big Is Her Gap At Each Recovery Period?
Nadia earns $8,000 a month, or $96,000 a year. She sets a treatment buffer of $50,000 against her $40,000 of MediSave, so her treatment shortfall is $10,000. She has $60,000 in cash and no CI cover.
| Years Off Work | Income Lost | Treatment Above MediSave | Less Cash | CI Gap (Nadia) |
|---|---|---|---|---|
| 1 | $96,000 | $10,000 | $60,000 | $46,000 |
| 2 | $192,000 | $10,000 | $60,000 | $142,000 |
| 3 | $288,000 | $10,000 | $60,000 | $238,000 |
| 5 | $480,000 | $10,000 | $60,000 | $430,000 |
Source: Worked example; income, balances and recovery periods are assumptions
At three years, $288,000 of lost income and the $10,000 shortfall come to $298,000, and her $60,000 of cash brings the gap to $238,000. The recovery period moves the answer far more than any other input, and it is the household's own estimate. Nadia uses three years, one more than her colleague needed.
What Can Her Savings Absorb Without A Policy?
Cash on hand absorbs the first part. Nadia would need $106,000 in cash, a year of income plus the treatment shortfall, to leave no gap for a one-year recovery. Her $60,000 covers a little over seven months of income.
MediSave and hospital insurance absorb treatment. A household whose MediSave exceeds its treatment buffer has no treatment shortfall, and its gap is income alone. A household whose savings already pay its spending has no salary to replace, and its CI gap is the treatment shortfall alone.
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Where Is Critical Illness Cover Sold?
CI cover is sold as a standalone plan or as a rider on a life plan. compareFIRST, the life insurance comparison portal run by the Life Insurance Association Singapore (LIA), lists the riders with each plan. In the catalog read from it in September 2026, 79 of 292 term and whole life plans carry an early-stage CI rider, 62 a late-stage one and 5 a multi-pay one.
An early-stage rider pays on an earlier diagnosis of a covered illness than a late-stage rider. The plan's product summary lists the illnesses and stages it covers.
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How Much Cover Does Nadia Buy?
Nadia looks for about $238,000 of CI cover, the gap for three years off work. She compares early-stage riders on term plans against standalone plans before she buys.
The gap is largest for a household with one main earner, little cash and years of work ahead, as in Nadia's case. A household with a year or more of income saved, or with savings that already pay its spending, needs far less, and the figure depends on the recovery period and treatment buffer each household assumes.