Health Insurance: Public vs Private Basics

In depth

Private cover in retirement

Many people underestimate that a private health insurance (PKV) premium does not automatically drop in old age, even though income falls – it can actually rise, because higher health costs and longer life expectancy are priced in over time. There are dampeners: insurers build up ageing reserves, and at the end of the year in which you turn 60 the statutory 10 percent surcharge, withheld from age 22 onward, falls away. A classic advanced mistake is to mentally lock in the cheap entry premium at 30 (often around 350–450 € a month), without planning for the same tariff costing 700–900 € at 70. Paying into a premium-relief tariff early smooths this later, but costs more today. The sensible move is to roughly weigh your future pension against the premium you will then owe, rather than fixating on today's saving versus the statutory system (GKV). Rule of thumb: the earlier you switch, the longer the span over which you have to judge old age correctly today.

Switch tariff, not insurer

When private premiums climb, people often think first of changing insurers – usually the worst option, because part of the ageing reserves built up over years is lost with a new provider, and you must re-qualify by health check. The better lever is the statutory right under section 204 VVG to switch, within the same insurer, into a comparable tariff; your reserves stay intact, and no fresh health check is required for equivalent or lower benefits. In practice insurers often do not point to such internal tariffs on their own; it is better to ask actively and in writing for all suitable alternatives. A higher deductible – say from 0 to 1,000 € a year – can cut the monthly premium noticeably, but only pays off if you can carry that gap when a claim arises. Note: extra benefits like senior-consultant treatment or a single room can be dropped, but usually only added back with a renewed health check. The rule here: compare calmly, sign nothing under sales pressure.

The road back to GKV

The return from private cover to the statutory scheme is deliberately narrow – a point many overlook on the way in. As an employee it works most readily if gross income falls below the compulsory-insurance threshold (around 77,400 € a year as of 2026), through part-time work or a job change; you then become compulsorily insured again. From age 55, however, this path is effectively closed: someone privately insured at that point, with certain prior PKV coverage periods, generally stays private for life. The self-employed have it harder still and usually return only via salaried employment subject to social-insurance contributions. One concrete special case: family members without meaningful income of their own can be co-insured free of charge under GKV family cover – whereas under private cover every child and partner pays a separate premium, which can quickly cost a family of four several hundred euros a month. Working through this asymmetry early matters, because the door closes with age.

The two-income trap for couples

Here is a scenario that catches many couples off guard. One partner earns a high salary, the other stays home with two young children. In public cover, family members without their own income can typically be co-insured at no extra premium, so the whole household is protected on one contribution. Switch the earner to private cover, though, and that free family coverage disappears: each child and the non-earning partner usually needs a separate private contract, each with its own premium. Take an illustrative case where the earner's single private premium looks cheaper than their public contribution on paper. Add three more private premiums for spouse and children, and the household total can climb well past what one public contribution would have covered for everyone. A useful rule of thumb: before comparing a private quote to your current public deduction, count how many people currently ride along for free, and get a private quote for each of them too. Compare household-to-household, never single-person-to-single-person. If your family is likely to grow, or one partner may pause work, that free co-insurance is worth far more than a slightly lower headline premium suggests.

Why young and healthy is a trap

The classic beginner mistake is choosing private cover in your twenties purely because the premium is low. It is low for a reason: at that age you are cheap to insure. The error is treating today's premium as if it were fixed for life. Private premiums are calculated on age and health at entry, and they tend to rise over the decades as medical costs grow and you age. The person you should imagine is not you now, but you at sixty on a reduced pension. A helpful mental exercise: don't ask whether you can afford the premium today, ask whether your projected retirement income could absorb a premium that is substantially higher in real terms. Also weigh what got you the cheap rate. If you qualified partly because you had no diagnoses, remember that a chronic condition acquired later cannot un-happen. You are then locked into a system priced by health, holding a condition that would make any fresh underwriting expensive or impossible. The avoidance move is simple discipline: model the long horizon, not the honeymoon rate, and treat a low young-person premium as a marketing number rather than a lasting one.

Read the plan, not the brochure

Glossy private plans advertise single rooms, the head physician, and fast specialist access. What ruins budgets is rarely the headline benefit; it is the fine print on cost-sharing and reimbursement. Two traps recur. First, the annual deductible: a plan can look cheap because you pay the first slice of costs yourself each year. In a healthy year that feels like free money. In the year you finally need care, you meet the full deductible on top of the premium, exactly when your income may already be squeezed. Second, reimbursement caps and tariff schedules. Private plans often pay dentistry, glasses, or certain therapies only up to a set percentage or annual limit, and specialists may bill above the standard schedule, leaving you the gap. A concrete illustrative example: a plan reimbursing dental work at, say, 70 percent leaves a large crown or implant course substantially out of pocket. The decision framework: for each benefit that matters to you, ask three questions in order. What must I pay before it pays? What percentage does it actually reimburse? Is there an annual or lifetime cap? A cheaper premium that fails these questions is not cheaper; it is deferred cost.

The self-employed fork in the road

Becoming self-employed is the moment many people quietly walk into a decision they later regret. As an employee, the split between public and private is heavily nudged by payroll rules and employer contributions. Go independent and those rails fall away: you may suddenly find private cover looks attractive because your public contribution is now calculated on your business income and can feel steep in a good year. The trap is optimizing for a strong first year. Self-employment income is volatile; the private premium you sign up for is not. In a lean year the public contribution can flex down as your income drops, while a private premium stays put regardless of whether you billed anything that month. A sensible framework for the newly self-employed: separate the two questions. First decide what you can sustain in your worst plausible year, not your best. Second, treat the choice as close to one-way, because moving back into public cover generally gets harder with age and income. If your earnings are lumpy or unproven, the flexibility of income-based contributions is itself a feature worth paying for, even if a private quote undercuts it in a boom year.