Entry age in private health insurance: why it shapes your premium for life

The entry age is your age when the contract is concluded. It should not be confused with the maximum entry age, which only describes the formal upper limit that insurers set for new customers. The entry age, by contrast, determines the premium calculation and the ageing reserves for the whole term of the contract.

When the contract is concluded, a premium is calculated that covers you for your whole life, for a certain entry age and a certain state of health. The earlier the entry age, the longer the contract runs and the more time the ageing reserves have to build up.

Unlike statutory health insurance, where the monthly contribution depends on income, other factors apply in private health insurance. Besides your health and the plan you choose, it is above all the age of the policyholder that affects the costs. The lower the entry age, the cheaper private health insurance can be.

In private health insurance, the exact month of birth does not decide this. What counts is the year of birth in relation to the year of the start of cover. For the premium calculation, customers count as one year older from January 1 of a new calendar year. This is why it can make sense to choose a start of cover in the current year, if all requirements are met and the switch can be carried out cleanly.

The premium has two parts: a risk share that covers current treatment costs, and a savings share that is accumulated as ageing reserves. The savings share is around 30% of the premium at a young age. In later stages of life, the accumulated reserves are used to dampen the rise in premiums.

If you join early, you build up reserves over decades. If you join late, you have less time for this and pay correspondingly higher premiums. This explains the high premium in later years. The higher the entry age, the smaller the reserve buffer, and the more this shows in the monthly premium.

The following estimated premiums serve as a guide for healthy people:

The actual premium depends on age, health, choice of plan and insurer. Pre-existing conditions can raise the premium considerably through risk surcharges.

By September 2025, private health insurance had built up around €351 billion in ageing reserves. On average, that is around €40,300 per insured person. This amount roughly corresponds to the reserve portion of the savings share of around 30% over the term of the contract.

In statutory health insurance, there are no comparable individual reserves. It is financed on a pay-as-you-go basis: what is paid in today finances today's benefits. This makes private health insurance in old age structurally more stable for early entrants, while late entrants benefit less.

The development of premiums in old age is the result of several factors:

• general premium adjustments due to inflation and medical progress
• the actuarial interest rate
• demographic effects on the whole pool of insured people
• the plan pool and its claims history
• the statutory calculation rules

Ageing reserves dampen this development, but they do not remove it completely. If you join early, you have more buffer. If you join late, you feel the dynamics more strongly. This is not a design flaw of private health insurance, but the direct consequence of how premiums work.

The rule of thumb is an entry age of about 40 years at most. From 45 years, acceptance rates fall, because pre-existing conditions become more likely. From 50 years, a switch only makes economic sense in specific situations in most cases, for example for civil servants with an entitlement to Beihilfe or for people with a very high and stable income.

In our advice work, we often see this: if you still want to switch at 45 or older, you should first use the anonymous risk enquiry and at the same time do a calculation across your stages of life. Whether the extra burden stays affordable over the next 20 to 30 years must be calculated in concrete terms, not estimated. Early advice prevents wrong decisions.

With a later entry, several approaches are possible:

• Choose a plan with lower initial benefits and upgrade later if needed. The risk is new health questions when you upgrade. This is why you should take out an option plan right at the start of cover, so that you do not need new health questions when you upgrade your benefits.
• Choose a premium relief plan that reduces the premium burden in old age.
• Stay in statutory health insurance and add private supplementary insurance for dental, inpatient and outpatient care. This is not private health insurance, but it gives targeted benefit improvements without the full premium profile of private health insurance.