Swiss & Cross-Border Tax Advisory: Geneva, Neuchâtel & Basel
Swiss taxation, French-Swiss cross-border advisory, withholding tax adjustments, 2041-AS / 2041-AE, CMU-LAMal and administrative support. Independent Swiss fiduciary firm serving residents and cross-border workers.
Full compliance with Swiss financial and regulatory guidelines.
Expert knowledge of Swiss-French tax treaties and cantonal law.
Prompt case review by a certified advisor within 24 hours.
Initial diagnostic of your tax and pension status with no obligation.
Tax & Cross-Border Advisory: Geneva, Neuchâtel & Basel
Each cross-border basin follows distinct bilateral tax treaties (1973 Treaty for Geneva vs 1983 Treaty for Neuchâtel and Basel). Our tax practitioners tailor your tax compliance and deduction strategy according to your canton of employment and department of residence.
Geneva
Geneva + Ain (01) & Haute-Savoie (74)
Tax is withheld at source by the Swiss employer. Specialized support for Geneva residents and cross-border workers residing in Haute-Savoie and Pays de Gex.
- • Withholding tax rectification: scale corrections before March 31
- • Quasi-resident status (TOU): 3A, LPP buybacks, actual deductions (90% rule)
- • Overtime 2041-AE: French tax exemption up to €7,500
- • French tax return (2042/2047): tax credit matching French tax
- • CMU vs LAMal option: irrevocable choice within 3 months
Neuchâtel
Neuchâtel + Doubs (25) / Pontarlier / Morteau
Cross-border workers in the Canton of Neuchâtel are taxed in France at their tax residence (Doubs) without Swiss withholding, subject to mandatory 2041-AS certificate.
- • Form 2041-AS: mandatory annual fiscal residence certificate
- • Full French tax declaration: CHF/EUR conversion, forms 2042 & 2047
- • Neuchâtel Cantonal Return (Clic&Tax): for residents & property owners
- • CMU vs LAMal arbitration: impact of taxable reference income (RFR)
- • Administrative representation: deadline extensions & audits
Basel
Basel-Stadt + BL + Haut-Rhin (68) / St-Louis / Mulhouse
Specific taxation for the tri-national Basel metro area. Taxation in France for Haut-Rhin cross-border commuters with strict monitoring of the 45-night rule.
- • 1983 Franco-Swiss Treaty: Haut-Rhin taxation & form 2041-AS
- • 45-night rule audit: securing cross-border status against audits
- • Pharma & Biotech Executives: Novartis, Roche, Lonza, stock options
- • French declaration (2042/2047): official exchange rate & deductions
- • CMU / LAMal & Administrative: comparative audit for high earners
Swiss taxation, bi-national filings & administrative compliance
From maximizing legal deductions to managing cross-border bilateral treaties, we deliver accurate, reliable, and compliant tax solutions for Swiss residents and cross-border professionals.
Ordinary Cantonal Tax Returns
Comprehensive management of your annual ordinary tax filing in Geneva, Vaud, and Neuchâtel (ICC / IFD). Detailed auditing of all allowable deductions: transportation expenses, professional meal costs, health expenses, child allowances, and maintenance costs.
- • Official e-filing via e-démarches, VaudTax, Clic&Tax
- • Advanced multi-bracket tax liability simulation
- • Comprehensive movable and real estate wealth declaration
Withholding Tax & Quasi-Resident Status
Expert advisory for cross-border commuters in Geneva. Thorough eligibility testing and filing for Subsequent Ordinary Taxation (TOU / quasi-resident status) to deduct actual household costs, mortgages, and contributions before the strict March 31 deadline.
- • Verification of the 90% Swiss income eligibility threshold
- • Formal TOU filing directly with the Cantonal Tax Authority
- • Processing of cross-border overtime forms (2041-AE)
Reporting Swiss Income in France
Mandatory annual declaration of Swiss salaries and pensions to the French tax administration. Certified completion of French forms 2042 and 2047, strict application of bilateral treaties to avoid double taxation, and foreign tax credit optimization.
- • Form 2047 (Income received from abroad)
- • 1983 Franco-Swiss Tax Agreement (Vaud, Neuchâtel)
- • Tax residence certificate (Form 2041-AS)
CMU vs. LAMal Right of Option
When taking up employment in Switzerland, cross-border workers have a strict 3-month window to exercise their irrevocable health insurance right of option. We conduct a precise financial audit comparing French CMU (8% on RFR) with Swiss flat-rate LAMal.
- • Multi-year financial modeling based on household income
- • Execution of the irrevocable choice form
- • S1 document procurement and CPAM / SAM registration
Tax Scale Adjustments & AFC Appeals
Correction of withholding tax deductions: scale adjustments following marriage, divorce, child birth, or spouse income fluctuations. Drafting and lodging reasoned formal objections with the Cantonal Tax Authority (AFC) in cases of erroneous assessment.
- • Adjustment of withholding tax bracket allocations
- • Retroactive integration of family dependents
- • Formal claims and appeals with tax administrations
Fiduciary Mandate & Tax Representation
Delegate all your tax correspondence and administrative burdens. We manage filing extension requests, formal responses to official audit queries, certificates of residence, and continuous year-round fiduciary oversight of your tax affairs.
- • Tax filing deadline extension requests
- • Documented audit responses and administrative inquiries
- • Secure year-round fiduciary representation mandate
Understanding your obligations by residency status
Tax liabilities and procedures differ fundamentally between living in Switzerland and residing in neighboring France.
Ordinary Swiss Tax Regime
Subject to mandatory annual ordinary tax returns with the tax authority of your canton of residence (Geneva, Vaud, Neuchâtel, etc.).
Bi-National Tax Regime
Withholding taxation in Geneva with optional Quasi-Resident status (TOU); or French taxation with Form 2041-AS in Vaud or Neuchâtel.
A rigorous 4-step process
Structured, confidential, and certified handling to ensure absolute compliance and legal tax efficiency.
Complimentary Diagnostic
Comprehensive assessment of your residency status, household profile, and Swiss and French income streams.
Secure Document Collection
Encrypted submission of your Swiss salary certificates, bank statements, itemized expense receipts, and attestations.
Optimization & Calculation
Precision drafting of cantonal and French tax returns, maximizing every allowable statutory deduction.
Filing & Compliance Monitoring
Official electronic submission to cantonal (AFC) and French (DGFIP) tax authorities, followed by final assessment review.
Rated 4.9/5 by over 130 Swiss residents and cross-border workers
Authentic client testimonials from taxpayers assisted with their Swiss tax returns, withholding tax rectifications, and retirement planning.
"Outstanding support for my withholding tax adjustment and quasi-resident status in Geneva. Every calculation was explained clearly, resulting in substantial tax recoveries."
"Highly professional and responsive. My ordinary tax return in Canton Vaud was managed with complete rigor, ensuring all statutory deductions were properly claimed."
"Fast and thorough guidance on health insurance comparison (LAMal vs CMU) and Pillar 3A contributions. A practice with deep expertise in cross-border specifics."
"Noah provided invaluable guidance for our Swiss tax declaration and retirement planning. He took the time to explain every single detail with patience and rigor."
"Flawless handling of Basel-Landschaft cross-border taxation and French Form 2041-AS. Responsive advisors, precise tax calculations, and continuous peace of mind."
"High-level advice on cross-border tax treaties. By restructuring our deductions and voluntary pension buybacks, we achieved immediate and substantial tax savings."
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Common Questions
Find answers regarding Swiss taxation, cross-border withholding tax, French tax reporting, and CMU vs. LAMal health options.
