Repaying a premium subsidy: when it happens

Why cantons reclaim premium subsidies

The premium subsidy has to be paid before the premiums fall due: the Federal Health Insurance Act (KVG) requires that eligible people do not have to pay the premium in advance (Art. 65 para. 3 KVG). But the final tax data for the year of entitlement are only available years later. Many cantons therefore first calculate with the latest available tax assessment and check entitlement again later. If the relevant income then turns out to be higher than assumed, the entitlement was too high, and the canton reclaims the difference.

So a repayment claim is usually not a penalty but the final settlement. It can also turn out in your favour: if the final calculation shows a higher entitlement, you receive a back payment.

The most common reasons:

According to the 2026 overview of the Swiss Conference of Cantonal Health Directors (GDK), systematic follow-up checks take place in Aargau. There, significant changes can lead to a review, for example if income rises by at least 20 % or at least CHF 20,000, or if assets grow by at least CHF 20,000.

Step by step: how a repayment claim works

Each canton sets its own procedure. Using the social insurance office SVA Zürich as an example:

1. Provisional subsidy. SVA calculates entitlement with the latest final tax assessment, which may be two years old, and pays 80 % of the calculated amount to your insurer.
2. Final calculation. Once the tax data for the year of entitlement are available, SVA calculates the final entitlement (100 %) and issues a written decision.
3. Repayment claim or back payment. If the entitlement is lower than the amount paid out, your health insurer invoices you for the amount. If it is higher, your insurer credits or pays you the difference.
4. Consider an objection. You can lodge an objection against the final decision within 30 days of receiving it. The deadline and address are set out in the notice of appeal rights.
5. Pay or agree instalments. If you cannot pay the amount in one go, ask your insurer. According to SVA Zürich, most insurers offer payment in instalments.
6. Closed. After the final decision, the amount for that year no longer changes.

The legal rules in detail

Federal law only sets the framework. Art. 65 para. 1 KVG obliges the cantons to subsidise the premiums of insured persons of modest means and to pay the contribution directly to the insurer. Under Art. 65 para. 3 KVG, they take into account the most recent income and family circumstances, in particular on application. The KVG contains no rule of its own on repayment claims.

No ATSG. Many decisions by your health insurer are governed by the Federal Act on the General Part of Social Insurance Law (ATSG) with its rules on written decisions, objections and repayment. For the payment of premium subsidies, Art. 1 para. 2 let. c KVG expressly excludes the ATSG. Whether and for how long a canton can reclaim, whether a waiver is possible and how the objection procedure works are therefore determined by the cantonal implementing act. The rules you may know from your insurer refusing a benefit do not automatically apply here.

Information through the insurer. The canton notifies the insurer of the eligible people and the amounts; the insurer informs you of the actual subsidy with the next invoice at the latest (Art. 65 para. 4bis KVG). Check this information: it is often the first sign that your entitlement has changed.

Moving. If you move to another canton during the year, the canton in which you lived on 1 January remains responsible for the whole calendar year (Art. 5 VPVK). Moving in itself is therefore no reason for a repayment claim in the current year.

At most the premium. The subsidy only covers the basic health insurance premium. In Lucerne, according to the GDK, it may not exceed the premiums owed in the calendar year. If you choose a cheaper insurer or a higher deductible, the premium may fall below the calculated amount; the canton decides what then happens to the difference.

Sample calculation: 80 % provisionally, 100 % finally

Example with fictitious people. Sara, 41, lives in Winterthur. Using her tax assessment from two years ago, SVA Zürich calculates an entitlement of CHF 2,400 for 2026 and provisionally pays 80 % to her insurer. The amounts are assumptions; the procedure with 80 % and 100 % is that of SVA Zürich.

The premium calculator shows how you can lower the premium itself, regardless of the subsidy.

Special cases

• Separation, divorce, death. If the household changes, the canton recalculates. This can lead to a higher or lower entitlement. Report the change so that the amounts are switched to the right people.
• Children and young adults. The minimum reduction of 80 % for children and 50 % for young adults in education only applies to low and middle incomes (Art. 65 para. 1bis KVG). If education ends or the family income rises above the canton’s limit, it no longer applies.
• Supplementary benefits and social assistance. If you receive supplementary benefits, you get the contribution towards your premium through the supplementary benefits and not through the ordinary procedure. For social assistance, the canton decides who bears the premium.
• Waiving the subsidy. If your situation improves significantly, you can also waive the premium subsidy, according to SVA Zürich. This way, no repayment claim arises in future.
• Choice of insurer. The repayment claim has nothing to do with your insurer; in Zurich it simply runs through its invoice. You can still plan a switch to a cheaper insurer; the profiles under Health insurers show the key figures.

Common mistakes

• Missing the objection deadline. In Zurich, it is 30 days from receipt. After that, the decision becomes final.
• Ignoring your insurer’s invoice. The repayment claim is an outstanding debt. If you cannot pay, agree instalments before reminders follow.
• Only showing pay rises in your tax return. The canton then only learns of them years later, and the repayment claim adds up. Report larger changes immediately.
• Confusing your insurer’s procedure with the canton’s. Premium subsidies are governed by cantonal law, not by the ATSG. The deadline is set out in the notice of appeal rights in the cantonal decision.
• Treating the provisional subsidy as final. As long as the final decision is outstanding, the amount may still change. Set part of it aside as a reserve.

The article Applying for a premium subsidy explains how to claim your entitlement in the first place. The article Premium caps shows which cantons limit the premium burden as a percentage of income. You will find more ways to save in the topic section Saving money.