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What's the difference between disability insurance and critical illness insurance?

By Reynolds Edokpayi, Zenith Advisory Inc., Saskatoon · Updated October 2026 · 5 min read

Short answer: Disability insurance replaces part of your monthly income if illness or injury stops you working, for as long as you're off, potentially to age 65. Critical illness insurance pays a one-time lump sum when you're diagnosed with a covered condition such as cancer, heart attack or stroke, whether or not you can still work. They solve different problems; many families hold both.

Side by side

Disability insuranceCritical illness insurance
Pays whenYou can't work because of illness or injuryYou're diagnosed with a covered condition and survive a short waiting period
Pays howMonthly, typically 60–70% of incomeOne lump sum, e.g. $100,000
Pays for how longUntil you recover, or to the end of the benefit period (often age 65)Once
Use the money forReplacing your paychequeAnything: treatment abroad, time off for your spouse, paying down the mortgage
Tax on the benefitTax-free if you paid the premium yourselfTax-free

Why disability insurance comes first for most people

Your ability to earn is your biggest asset. A 35-year-old earning $90,000 will earn roughly $2.7 million before 65. The odds of a disability lasting 90 days or more before retirement are higher than most people assume. If you're self-employed or incorporated, there is no group plan: it's this or nothing.

Why critical illness still matters

Many people with a serious diagnosis go back to work within months, so disability insurance pays little. But the costs land anyway: a spouse taking leave, travel for treatment, home changes, or simply time to recover without financial pressure. A lump sum covers exactly that. It's also the policy most often claimed by people who are otherwise "fine".

If you can only afford one

For most working people: disability insurance, sized to replace your income. Then add critical illness as budget allows, often starting with a modest amount like $50,000 to $100,000.

Through work or on your own?

Check the booklet first. Group long-term disability often has a taxable benefit and a cap. Group critical illness is often small or absent. Personal policies fill the gaps and come with you when you leave.

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Related questions

Common questions

Questions people ask us

Does disability insurance cover mental health?

Most policies do cover disabilities caused by mental health conditions, though some have limitations on duration. Read the definition and ask before you buy.

Can I get critical illness insurance for my children?

Yes. Child critical illness coverage exists and is inexpensive. It's designed to let a parent stop working to be with a sick child.

What's the waiting period on disability insurance?

Commonly 90 days, though you can choose 30, 60 or 120. A longer waiting period lowers the premium; the right choice depends on how much emergency savings you have.

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