Basel taxation 2026: tax advisory for residents, life sciences executives and Alsace cross-border workers
Residents of Basel-Stadt, Basel-Landschaft and cross-border workers from Alsace (Saint-Louis, Mulhouse, Colmar): structure your taxation, equity compensation and Swiss pension strategy in French or English.
BS / BL
Dedicated expertise for the Cantons of Basel-Stadt and Basel-Landschaft
1983 Treaty
Taxation in France for cross-border workers returning daily to Alsace
CHF 7,258
Pillar 3a deduction cap for employees affiliated with LPP
RSU / LPP
Structuring of bonuses, restricted stock units and executive pension plans
Tailored tax and wealth advisory for the Basel economic region
As a global hub for life sciences, chemicals and finance, the Basel region brings together international executives holding B/C permits and over 35,000 cross-border workers from Alsace. Differences between Basel-Stadt, Basel-Landschaft and French tax rules create substantial optimization opportunities.
Advisory in French and English for expatriates and cross-border workers in Basel
Although the tax administrations of Basel-Stadt (Steuerverwaltung BS) and Basel-Landschaft operate in German, our firm prepares and supervises your entire tax filing (BalTax / EasyTax) in English and French.
BalTax (Basel-Stadt) and EasyTax (Basel-Landschaft) filing
Complete handling of your ordinary tax return or Subsequent Ordinary Assessment (TOU) for B-permit residents.
Equity compensation (RSUs, stock options) and 1e executive plans
Precise tax reporting of pharmaceutical group equity grants and maximization of pension fund and executive 1e plan buybacks.
Franco-Swiss taxation for Alsace cross-border workers
Securing form 2041-AS, calculating net taxable income in euros, claiming overtime exemption (2041-AE) and comparing LAMal vs CMU.
Comparison of tax regimes in the Basel region (2026)
| Taxpayer category | Competent tax authority | Software / tax form | Primary tax-saving lever |
|---|---|---|---|
| Basel-Stadt resident (BS) | Steuerverwaltung Basel-Stadt | BalTax (or eSteuern.BS) | LPP buyback, Pillar 3a, childcare costs |
| Basel-Landschaft resident (BL) | Steuerverwaltung Basel-Landschaft | EasyTax BL | Municipal deductions, property maintenance |
| B-permit expat (> CHF 120,000) | BS or BL (mandatory TOU) | BalTax / EasyTax | Refund against payroll withholding tax |
| Alsace cross-border worker (68) | French tax office (SIP) | Forms 2042, 2047 and 2041-AS | Actual expenses, LPP buyback, 2041-AE, LAMal |
Our 4-step advisory methodology
Initial audit and eligibility check
Comparative modeling of optimization levers
Compliant preparation and electronic filing
Assessment verification and multi-year follow-up
Frequently asked questions
Technical answers to your questions
Yes, by submitting a voluntary Subsequent Ordinary Assessment (TOU) request before 31 March of the following year, provided a prior simulation confirms the ordinary schedule is advantageous for you.
RSUs are taxed at vesting. If you moved internationally between Switzerland and France during the vesting period, taxation is apportioned pro rata based on workdays in each country.
Both Basel cantons (BS and BL) are covered by the 1983 Franco-Swiss agreement: if you return daily to Alsace and submit form 2041-AS, your salary is taxed in France.
Related services
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