You earn less, yet the premium grew — retirement is the day your status changes

You worked 30 years and retired. With the salary gone, your outgoings should shrink too. But a few months later a health insurance bill arrives, larger than when you were employed. Income vanished and the premium grew. Your first thought is that it must be a mistake, but the calculation is right. Your status changed. Health insurance has three statuses, each with its own formula. Which one you stand in sets the amount, and retirement is the day the status changes.

The three statuses are employee member, regional member, and dependent. An employee is charged on salary alone and the employer pays half. A regional member is charged on income and property and pays in full. A dependent pays nothing, but the door in is narrow. One person moves through all three over a lifetime: employee when hired, regional when retired, dependent when the tests are met. Four steps: ① how do employee and regional differ, ② how is a regional member's property premium calculated, ③ how narrow is the dependent's door, ④ what can you prepare before retiring.

Step one. The 2026 health insurance rate is 7.19%, the same for employee and regional members. What differs is what the rate is applied to and who shares it. For an employee it is applied to monthly pay (the salary) and split with the employer, so your share is 3.595%. On ₩3M a month, ₩107,850 leaves your pay. Property does not matter. Own a home and an employee's premium is still charged on salary alone.

A regional member is different. A property premium is added to the income premium (National Health Insurance Act Art. 69(5)), and with no employer to share it, it is all yours. But income is counted differently from salary. Public pensions such as the National Pension and earned income count at only half, and interest and dividends taxed separately are left out entirely if they total ₩10M a year or less (Enforcement Rule Art. 44, amended 2024-05-13 · current Rule effective 2026-08-11). A retiree on a ₩2M-a-month National Pension is counted as having ₩1M of income, so the income premium is ₩1M × 7.19% = ₩71,900 a month. That is actually less than the ₩107,850 paid while employed. Yet the bill grows, because the property that was hidden behind the salary enters the calculation. One home with a ₩220M property tax base adds a property premium of ₩103,635 (worked out in step two), for a total of ₩175,535. That is ₩67,685 more than as an employee. The home you spent 30 years paying for becomes, for the first time in 30 years, the base of a premium.

Step two: the property premium. Take the property tax base, subtract a ₩100M basic deduction, convert the remainder into points on a bracket table, and multiply each point by ₩211.5. That is the method in Table 4 of the Enforcement Decree (Table 4 amended 2024-05-07). With a ₩220M tax base, subtracting ₩100M leaves ₩120M, which falls in grade 20 (over ₩119M up to ₩133M) for 490 points: 490 × ₩211.5 = ₩103,635. Owning property does not trigger a premium by itself. Up to a ₩100M tax base there is no property premium. The figure used is the property tax base printed on your property tax bill, not market value, and it is usually far below market value.

What about cars? They are no longer in the calculation. From 1989, for 35 years, cars carried a premium too, but it was abolished from the February 2024 bill. However many cars you own, they have no bearing on your health insurance. If you have been worrying, on the old rules, that a car would raise your premium, that worry no longer applies.

Step three: the dependent. This is the status that pays nothing at all, a seat attached to a family member who is an employee. But the door has three layers and you must pass all three. ① Income: over ₩20M a year and you are out, and public pensions count in full here, not at half. A ₩2M-a-month National Pension is ₩24M a year, so it stops at this first door. ② Type of income, the layer most often missed. Even under ₩20M, any business income disqualifies you. Only if you have no business registration is up to ₩5M tolerated, and any housing rental income closes even that exception. So 'just stay under ₩20M' is only half right. ③ Property: if the property tax base exceeds ₩540M, you survive only up to ₩900M and only if annual income is ₩10M or less. Above that, you are out. And the income test is not applied to spouses separately. If one spouse fails the income test, neither can be a dependent. Your own income can be ₩0 and you can still be disqualified by your spouse's business income. Nor is passing once the end of it: the Service links income and property records and re-checks eligibility. For someone who ran the numbers in advance, that notice is no surprise.

Step four: what you can prepare before retiring. ① Check your property tax base now. The property premium bracket and the dependent property test both come from this one figure, which is on the July and September property tax bills. ② Sketch the types of income you will have after retiring. The same amount gives different results by type, and rental income in particular, even a single won, shuts the dependent's door. ③ There is a scheme called voluntary continued membership: for a period after leaving a job, it lets you keep paying at roughly the level you paid as an employee, a buffer for when the regional premium would be larger. Eligibility and duration need confirming with the Service, and there is an application deadline you cannot recover once missed, so as retirement approaches, ask the National Health Insurance Service first. Your premium after retirement is set by the income and property structure you built before it, not on the day you retire.

One table to sum up. Employee: salary × 7.19%, half paid by the employer, property not counted. Regional: income (pension and earned income at half) × 7.19%, paid entirely by you, plus the property-point premium. Dependent: ₩0, but three steps (₩20M income, no business income, property tax base ₩540M). Three boxes are misread most often. An employee's premium does not rise however much property they own. A regional member is charged on property alone even with no income. A dependent's income test is applied to both spouses. For reference, an employee with very large income outside salary faces a separate additional premium.

Two things to do now. ① Find the tax base on your property tax bill and compare it with ₩100M and ₩540M. ② If retirement is in sight, confirm eligibility and the deadline for voluntary continued membership with the Service in advance. Today covered only the skeleton of the three statuses: the property point brackets, the detailed income assessment, and regional premium reductions differ by case, and the Service's simulator and consultation are the most accurate. The bill arrives after you retire, but the amount is decided before. Only those who look ahead get to choose.