Frontier workers: payroll analysis Switzerland 2026 (cross-border guide)

Context

In a nutshell - The new Borders Agreement takes effect from 1 January 2024. - Taxation takes place exclusively in Switzerland for frontier workers. - Italy applies the tax credit to avoid double taxation. - Swiss social security contributions reduce gross wages. ## Key facts - What: Tax withholdings and social security contributions in Switzerland - When: Effective from 1 January 2024 - Where: Swiss Confederation - Who: Frontier workers, Swiss and Italian tax authorities - Amount: 5.3% AVS/AI/IPG, 1.1% AD/AC, 0.7–1.5% LAINF The tax regime applicable to frontier workers working in Switzerland is regulated by the New Agreement signed on 23 December 2020 and fully operational from 1 January 2024, in accordance with Italian Ratification Law no. 83 of 13 June 2023. This regulatory framework, which replaces the previous provisions, establishes that the taxation of employee income takes place exclusively in Switzerland. To avoid double taxation, workers can claim the tax credit in Italy by filling in the EC framework in form 730, thus guaranteeing tax regularity between the two countries. The convention against double taxation, originally signed on 9 December 1976, remains the fundamental pillar of tax relations between Italy and Switzerland, considering that the Confederation is not a member of the European Union or the European Economic Area. ### Structure

Operational details

The practical analysis of the pay slip requires a clear distinction between transitional regimes and the new regulations introduced from 2024. For the so-called 'old frontalieri', i.e., those who worked in Switzerland before July 17, 2023, a tax exemption of CHF 7'500 is foreseen, within a transitional regime that will last until 2033. Conversely, for new frontalieri who entered the labor market after this date, the franchise is set at CHF 10'000. These thresholds directly affect the calculation of the income tax, which is deducted monthly by the Swiss employer. The management of the net real income therefore depends on the correct application of these franchises in the tax declaration in Italy, where the tax credit allows to offset the taxes already paid in the Swiss territory. Beyond taxes, the cost of living and mandatory expenses such as the LAMal (health insurance) significantly impact the monthly budget. Frontalieri have the right to opt for health coverage, choosing between Swiss health funds, with franchises that usually range between CHF 300 and CHF 2'500. It is necessary to carefully consider the impact of LAMal premiums, as they are not deductible from the Swiss taxable income at source but represent a fixed expense that erodes the real purchasing power of the worker. Financial planning must also take into account the fluctuation of the exchange rate between Swiss franc and euro, a factor that can significantly influence the value of the net income once converted. For an accurate estimate, it is advisable to use regularly a calculator that integrates the current tax rates and the deductions provided by law, allowing to simulate different tax scenarios based on the individual tax profile and specific pension situation, ensuring a transparent view of the actual monthly economic availability.

Key points

To properly manage one's fiscal position in 2026, the frontaliere must adopt a rigorous procedure that begins with the verification of the documentation issued by the Swiss employer. Each month, the employer applies the withholding tax at the source based on the applicable rate, which takes into account any social deductions and the applicable tax credit. It is essential to keep the annual salary certificate, as it constitutes the indispensable documentary proof for the tax declaration in Italy. During the completion of the model 730, the taxpayer must insert the data relating to the gross income and the taxes paid in Switzerland, using the tax credit to avoid double taxation by the Italian tax authorities (Agenzia delle Entrate).

For a precise net salary calculation, use our tax comparator: compare take-home pay between G and B permits with all 2026 deductions.