How much critical illness coverage is enough? A guide to understanding critical illnesses and determining how much coverage you need

When travelling, most people spend time planning the itinerary, arranging accommodation, etc., but have you properly planned for your future? If health problems arise later, will your financial reserves be sufficient to cope? Many people currently have medical insurance, but when faced with an unexpected critical illness, relying on medical coverage alone may not be enough. Do you need to buy critical illness insurance? How much critical illness coverage is enough? In this article, 10Life will explore the role of critical illness insurance with you and teach you how to calculate an appropriate coverage amount so that you and your family are better protected against health risks.

Critical illness insurance (Critical Illness Insurance) is an insurance product designed to protect against serious illnesses. When the insured is unfortunately diagnosed with a serious illness specified in the policy (such as cancer, heart disease, or stroke), the insurer will pay the insured a lump-sum benefit. Unlike regular medical insurance, the insured can use the payout freely and flexibly to pay for treatment costs and to cover daily living expenses, allowing the insured to focus on recovery without financial worries when they are unable to work because of illness.

Many people may think that having health insurance is enough, but in reality health insurance reimburses medical expenses on an “actual expense” basis. By contrast, critical illness insurance is more flexible. If the insured is unfortunately diagnosed with a specified serious illness, they will receive a lump-sum payment without having to submit medical expense receipts, and can use the payout flexibly. For some critical illnesses, such as cancer, which require long-term treatment, the patient may need to stop working to recuperate, and relying solely on health insurance may not fully cover treatment costs and everyday living expenses. A lump-sum payment from critical illness insurance can be used to make up for lost income due to stopping work, pay medical bills, or even hire a caregiver, allowing for more comprehensive care. Therefore, even if you already have health insurance, critical illness insurance remains an important protection not to be overlooked.

Medical Costs

In Hong Kong, private medical costs are high. For example, for excision of a breast lump, surgery and hospitalization fees in a private hospital can exceed HK$50,000 to HK$70,000¹, and treatment costs for different critical illnesses can vary widely. Moreover, medical inflation in Hong Kong is ongoing. According to data from risk management consultancy WTW, medical inflation in Hong Kong is projected to reach 9.8% this year, far higher than overall inflation. Coverage that seems adequate today may not be enough to cover actual expenses in the future. Therefore, when choosing a critical illness sum assured, medical inflation should be taken into account to ensure sufficient protection when needed, reduce financial stress, and allow focus on treatment and recovery.

Living Expenses During Treatment

During illness, a patient may be unable to work for months or even years, resulting in income interruption. Besides medical expenses, you should also include everyday costs in your calculations, such as rent or mortgage payments, children's education fees, support for elderly parents, and basic living expenses like transport and food. In addition, during treatment the patient may need to hire caregivers or purchase specific nutritional supplements to aid recovery, which will create extra expenses. Therefore, it is generally recommended that the critical illness sum assured should cover at least 2 to 3 years of living expenses to ensure that the patient's quality of life is not affected by an income interruption during recovery.

Assess Your Financial Situation and Family Responsibilities

When choosing a critical illness sum assured, in addition to medical and living expenses, you should determine an appropriate level of coverage based on your financial situation and family responsibilities. Different life stages have different protection needs. For example, a single person mainly needs to consider medical costs and daily expenses to ensure they can maintain basic living standards during treatment; married people or those with children should also consider the family's financial situation, including the spouse's living expenses and children's education costs, to ensure the family can remain stable even if they cannot work. In addition, if you have a mortgage or need to support elderly parents, you should ensure the sum assured can cover these long-term financial commitments to avoid affecting your family's life due to an income interruption. Taking comprehensive account of medical costs, living expenses, and personal financial responsibilities allows you to design a critical illness insurance plan that better fits your needs, ensuring sufficient financial support at critical moments so you and your family can face the future with peace of mind.

Facing long-term treatment, patients may need to stop working and bear financial pressure. Critical illness insurance can provide a lump-sum payout to ease the financial burden and give greater peace of mind to yourself and your family. But how do you choose the right critical illness insurance? 10Life actuaries conducted an in-depth analysis of whole-life critical illness plans in the market, evaluating payout amounts under different scenarios (such as cancer, heart disease, stroke, unknown illnesses, and additional early-stage payouts), and scoring them based on policy terms, including critical illness definitions and exclusions. If you have any questions, you can learn about term critical illness or whole-life critical illness plans on the 10Life website, or contact a licensed advisor for professional advice.

Further reading：
[Critical Illness Insurance 2025] Whole-Life CI vs Term CI! Full comparison of premiums, coverage, and savings components
[Critical Illness Insurance Comparison 2025] Which whole-life critical illness insurance is best? 5-star insurance key revealed
Can't buy insurance after a major illness? Which critical illness plans rekindle hope for survivors

Note：
1.St. Paul's Hospital, "Billing Data of Common Inpatient Treatments or Examinations 2023", 2023. 

Last updated: April 2, 2025

This English version of this article has been generated by machine translation powered by AI. It is provided solely for reference purposes. In the event of any discrepancy or inconsistency between this translation and the original Chinese version, the Chinese version shall prevail.