Fully Insured vs Self-Funded Group Medical Insurance in Hong Kong

Almost every group medical scheme in Hong Kong is fully insured, meaning an insurer takes on the risk in exchange for a fixed premium. A smaller number of very large employers use a self-funded, or administrative-services-only, approach instead, where the company itself carries the financial risk of claims and pays an administrator to process them. This guide explains both models and who each one genuinely suits.

How fully insured works

Under a fully insured arrangement, the employer pays a fixed annual premium, and the insurer bears the financial risk of whatever claims arise during the year, whether the group's actual claims turn out higher or lower than expected. This is the model used by the overwhelming majority of Hong Kong companies, and it is the approach assumed throughout our group medical cost guide, since it is by far the most common structure for small, medium, and most large employers.

How self-funding works

Under a self-funded model, the employer sets aside its own funds to pay claims directly, and engages an administrator, sometimes an insurer acting in an administrative-only capacity, to process claims, manage the network, and handle the operational side of running the scheme. The employer bears the financial risk directly: a year with unusually high claims costs the company more, while a year with low claims saves the company money, rather than either outcome being absorbed by an insurer's premium.

The trade-off, side by side

Why fully insured suits most companies

For the vast majority of Hong Kong employers, the predictability of a fixed premium is worth far more than the theoretical long-run saving from self-funding, particularly because a single unusually severe claim, an employee with a serious illness requiring extensive treatment, can be financially significant relative to a smaller or mid-sized company's overall size. Fully insured cover effectively pools this risk across the insurer's much larger overall book of business, which is exactly the protection a self-funded employer gives up.

Why some very large employers self-fund

Self-funding becomes a realistic option only once a company is large enough that its own claims experience becomes statistically stable and predictable in its own right, similar to how an insurer's much larger pool behaves. At this scale, the insurer's risk margin, built into every fully insured premium, becomes a genuine cost the company could avoid by carrying the risk itself, since the company's own size gives it something close to the same predictability an insurer relies on.

A rough guide to company size

There is no fixed threshold, since it depends on risk appetite and financial strength as well as headcount, but self-funding is generally only considered by companies with several hundred employees or more in Hong Kong, and it remains a minority choice even among large employers here, most of whom still find fully insured cover the more practical and lower-risk approach. For essentially any company below this scale, fully insured cover, covered throughout our group medical guides, is the relevant and appropriate model.

If you are large enough to genuinely consider self-funding

This is a decision that benefits from detailed actuarial modelling of your own claims history and risk tolerance, well beyond what a general guide can responsibly cover. Talk to an advisor if your company is at a scale where this genuinely warrants exploration.

A middle ground: partial self-funding

Some larger employers adopt a structure between the two extremes, sometimes called a level-funded or stop-loss arrangement, where the company carries the risk for smaller, predictable claims while an insurer covers costs above a certain threshold per claim or in aggregate for the year. This gives some of the potential cost benefit of self-funding while capping the downside risk of a genuinely severe claims year, and it is worth knowing this middle ground exists rather than assuming the choice is strictly binary between fully insured and fully self-funded.

What tends to trigger the conversation

In practice, self-funding rarely comes up as a decision made from a blank page. It typically surfaces when a large company's finance team notices, after several years of fully insured renewals, that the group's claims experience has consistently run well below what the insurer's premium implies, prompting the question of whether the company could capture that margin itself. This is a legitimate question to ask at sufficient scale, but it is worth testing rigorously against several years of data and genuine actuarial input before acting on it, rather than concluding from a single favourable year that self-funding is clearly the better path.

What changes operationally under self-funding

Beyond the financial risk transfer, self-funding shifts real operational responsibility onto the employer that a fully insured scheme otherwise handles invisibly. The company, rather than an insurer, needs to budget cash flow for claims as they arise rather than a single predictable premium, and needs genuine oversight of the third-party administrator managing the network and processing claims, since there is no insurer's own capital and reputation standing behind the scheme's performance in the same way. This administrative burden is a real cost of self-funding beyond the pure financial risk, and it is worth weighing honestly against the potential saving before committing to the model.

Stop-loss cover as risk management

Companies that do move towards self-funding or a level-funded structure almost always pair it with stop-loss cover, a separate policy that caps the company's exposure above a set threshold per claim or in aggregate for the year. This is what makes partial self-funding a genuinely manageable middle ground rather than an all-or-nothing gamble: the company captures the average-case saving from carrying smaller claims itself, while a specific catastrophic claim, the kind that would be genuinely damaging to absorb directly, is still covered by the stop-loss insurer. Setting this threshold correctly, neither so low that it defeats the purpose of self-funding nor so high that it exposes the company to real financial risk, is one of the more technical decisions in structuring this kind of arrangement, and is exactly where specialist actuarial advice earns its cost.

Reviewing the decision over time

A company that adopts self-funding or a level-funded structure should not treat the decision as permanent. Claims experience, workforce composition and the company's own financial position all change over time, and a structure that made sense five years ago may no longer be the best fit as the business evolves. Revisiting this decision periodically, with the same rigour applied when it was first made, is worth building into the same annual review cycle as any other significant benefits decision, rather than assuming the original choice remains correct indefinitely as circumstances shift.

Why scale is the deciding factor

The mathematics behind this decision rest on claim predictability. Medical inflation in Hong Kong is forecast at roughly 9.9 to 10.5 per cent for 2026, a trend a fully insured premium absorbs on the employer's behalf in exchange for a risk margin. A self-funding employer captures that margin but takes on the year-to-year variance directly, which only becomes a reasonable trade once the group is large enough that its own claims pattern is statistically stable, generally several hundred lives in the Hong Kong market.