Danilo · Updated 2026-10-21 · Sources: Baloise/Helvetia joint media releases, 22 April, 23 May and 1 December 2025; Helvetia Baloise results release, 15 April 2026; Zefix/SHAB entry for Helvetia Baloise Holding AG, 9 December 2025; Regierung des Kantons St.Gallen, answer to Einfache Anfrage 61.25.27, 10 June 2025; ESTV tax calculator 2026 (income and legal-entity taxes); SBB fares; Federal Direct Tax Act (DBG, SR 642.11), Art. 69; Tax Harmonisation Act (StHG, SR 642.14), Art. 28; Ordinance on minimum taxation of large business groups (SR 642.161)
Helvetia Baloise moves its seat from St. Gallen to Basel – what tax means in a merger
This is more than an office move. Helvetia Holding AG absorbed Baloise Holding AG, changed its name to Helvetia Baloise Holding AG and, in the same register entry, moved its registered office from St. Gallen to Basel. The merger was announced on 22 April 2025 and completed on 5 December 2025; the Swiss commercial gazette (SHAB) published the entry on 9 December 2025. The new address is Aeschengraben 21 in Basel.
What moved is the holding company. According to Zefix, the operating insurer Helvetia Schweizerische Versicherungsgesellschaft AG is still registered in St. Gallen, while the life insurer Helvetia Schweizerische Lebensversicherungsgesellschaft AG is registered in Basel.
What the company says
The joint media release says: "The registered office and headquarters of the Group will be in Basel, while St. Gallen remains an important location." For the merger itself, the releases we read give scale, synergies and cultural fit. They do not say why Basel became the seat. They also call the absorption the most efficient and tax-neutral structure, but that describes the transaction, not the seat.
The St. Gallen government was questioned in the cantonal parliament. In its answer of 10 June 2025 it wrote (in German, our translation) that the head of the finance department had been informed confidentially about the move of the head office to Basel "in the context of the tax ruling", and that more concrete statements on the consequences would be "speculative" at that point. No loss of tax revenue has been published.
What the company tax gap looks like
The group's real Swiss taxable profit is not public, so we price an illustrative company limited by shares (AG) with CHF 1 million of profit before tax and CHF 10 million of equity, using the federal tax administration's (ESTV) calculator for 2026.
| Location | Profit tax | Capital tax | Total per year | Profit tax as share of profit |
|---|---|---|---|---|
| St. Gallen | CHF 142'925 | CHF 0 | CHF 142'925 | 14.3% |
| Basel | CHF 129'135 | CHF 9'860 | CHF 138'995 | 12.9% |
On these figures Basel is CHF 3'930 a year lower (CHF 142'925 − CHF 138'995). Profit tax is CHF 13'790 lower in Basel, but the calculator shows a capital tax of CHF 9'860 there and none in St. Gallen.
That is small next to a merger of this size. The releases do not say why the seat went to Basel, and the company has not said whether tax played a part. Set the CHF 3'930 beside what it did say and judge for yourself.
A holding is not an ordinary AG
The table prices an ordinary company that earns its profit by trading. A holding's taxable profit can look different: much of it can be income from participations in subsidiaries, for which the profit tax is reduced (participation relief, Art. 69 DBG and Art. 28 StHG). The real tax bill at holding level could therefore be well below the illustrative line above, or unrelated to it. We give no figure for that.
The minimum tax
Since 2024, groups with at least EUR 750 million in annual consolidated revenue pay a Swiss top-up wherever their effective rate falls below 15% (Ordinance on minimum taxation of large business groups, SR 642.161). Helvetia alone reported a business volume of CHF 11'550.4 million for 2025 (results release of 15 April 2026), far above that threshold, so the group falls under the rule. The top-up can absorb part of a statutory difference between two cantons. How much, for the group or for any single company in it, Zügle does not compute; the calculator ignores the minimum tax.
Staff who commute from St. Gallen to Basel
For someone who keeps living in St. Gallen and works at the Basel seat, a monthly second-class pass comes to about CHF 399 in Zügle's fare tables. That is the top national tier, applied to journeys over about 70 rail kilometres, or CHF 4'788 a year (CHF 399 × 12). Check SBB for the real price. Headcount at either location was not published, so we cannot say how many people this concerns.
Staff who move to Basel
Two example households, not Helvetia pay data. Both earn CHF 130'000 gross, with no church tax, and the figures are for tax year 2026.
| Household | St. Gallen | Basel | Difference |
|---|---|---|---|
| Single | CHF 22'986 | CHF 22'080 | CHF −906 |
| Married, two children | CHF 10'047 | CHF 10'959 | CHF +912 |
The single example pays CHF 906 less in Basel (CHF 22'986 − CHF 22'080). The family pays CHF 912 more (CHF 10'959 − CHF 10'047). Which way it goes depends on the household, so there is no general tax case for moving. For anyone who would otherwise travel every day, the pass is the larger number.
What these numbers leave out
- The company figures describe an illustrative AG, not Helvetia Baloise.
- Holding structure, participation relief and minimum tax are not in the table.
- The household figures cover one income and no church tax.
- Rent is left out on purpose, and so is travel time.
- Nothing here is tax advice. Have a Swiss tax adviser review any decision.
Try it with your own numbers
Compare your own St. Gallen home with a flat in Basel: try it with your own numbers. Relocation advisers can run the same comparison per employee in the agency workspace.