How many smart working days can a cross-border worker do?

An Italian cross-border worker employed in Switzerland can perform up to 25% of annual working time as telework from their Italian home, equal to about 55 days out of 220 working days. The calculation is annual, not weekly or monthly: exceeding by even one day causes loss of frontaliere tax status for that tax period.

How does the 45% telework 2026 rule work?

The 45% threshold concerns the bilateral agreement between Switzerland and France, not the one between Italy and Switzerland. For Italian cross-border workers the limit remains 25% annually. Italian unions and employer associations are calling for alignment with 45% for competitiveness reasons, but no changes to the IT-CH Protocol are in force in 2026.

Cross-border worker telework taxation: what changes if I exceed 25%?

Exceeding 25% annually triggers concurrent taxation: Switzerland continues to tax income from work performed in Ticino, while Italy taxes the share corresponding to days worked in excess in Italy. Double taxation is neutralized by the tax credit, but the administrative burden increases significantly with a complete Italian tax return.

Does telework cause loss of cross-border worker status?

Only if the 25% annual threshold is exceeded. Staying within 55 telework days per year (out of 220 working days) keeps the cross-border worker status and the tax benefits of the Italy-Switzerland Protocol intact. The 45 non-return days for professional reasons (business trips, projects, training) are also compatible with the status, provided the two counts are not confused.

How to communicate cross-border telework to the employer?

It must be formalized in writing: ask the HR office for a contractual addendum that indicates the agreed annual smart working percentage and the day-tracking system. Also keep a parallel personal log (calendar or app) as proof in case of an audit by the Italian Revenue Agency or the Ticino Tax Division.

Remote work cross-border workers 2026: 25% and 45 days rules (cross-border guide)

Di Valerie Linc · Published on 18 February 2026 · Updated on 17 February 2026

Remote work for cross-border workers in 2026: the Italy-Switzerland Protocol allows up to 25% telework annually (around 55 days) and 45 days of non-return for professional reasons, without losing frontaliere status. Comparison table, taxation, and how to communicate it to your employer.

Context

TL;DR

Italy-Switzerland Protocol allows 25% telework from Italy
Cross-border workers can stay in Switzerland for 45 days/year
Exceeding 25% telework triggers double taxation
Tax deadline for 2025 income is March 16, 2026

Key facts

Telework limit: 25% of working time annually
Non-return days: 45 days per year for professional reasons
Tax deadline: March 16, 2026 for 2025 income
Old workers: Hired before July 17, 2023
New workers: Hired after July 17, 2023
Tax allowance: EUR 10,000 for new cross-border workers
Annual gross salary: CHF 70,000, CHF 95,000, CHF 130,000
Annual fuel savings: approx. CHF 1,100, CHF 1,500, CHF 2,100

Remote work for cross-border workers in 2026 is governed by the Italy-Switzerland Protocol in force since January 1, 2024: workers can perform up to 25% of their working time as smart working from Italy and stay in Switzerland for professional reasons for up to 45 days per year, without losing their frontaliere status or facing double taxation.

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Operational details

Understanding the practical difference between the 25% threshold of the Italy-Switzerland Protocol and the 45% threshold of other bilateral agreements (such as the one between Switzerland and France) is essential to avoid confusing the rules. For Italian cross-border workers in Ticino, the operational threshold remains 25% annually: exceeding it, even by a single day, can result in the loss of frontaliere tax status and trigger concurrent taxation in both states.

Comparison Table: CHF Salary Scenarios and Telework Impact

The table below shows the practical impact of the two thresholds on three typical salary scenarios in the Ticino market, calculated over 220 working days per year:

| Annual gross salary | Telework at 25% (IT-CH limit) | Telework at 45% (EU hypothesis) | Annual fuel savings (25%) | Income taxable in Italy if exceeded | |---|---|---|---|---| | CHF 70,000 | 55 days/year | 99 days/year | approx. CHF 1,100 | approx. 28% of income | | CHF 95,000 | 55 days/year | 99 days/year | approx. CHF 1,500 | approx. 28% of income | | CHF 130,000 | 55 days/year | 99 days/year | approx. CHF 2,100 | approx. 28% of income |

Fuel savings are calculated on an average commute of 60 km between Como or Varese and Lugano, with consumption of 6 liters per 100 km and an average Italian diesel price of 1.80 euros per liter in 2026.

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Key points

With these structural rules, personal organization and dialogue with the employer become the key tools to avoid disputes with the Italian and Swiss tax authorities. Imprecise management of telework days or professional overnight stays in Ticino can lead to administrative penalties, retroactive assessments, and loss of the Protocol's tax benefits. The good news is that, with a minimum of discipline and tracking, the 55 annual smart working days are fully compatible with the routine of an average cross-border worker.

How to Communicate It to Your Employer

💡 The first step is to formalize the telework agreement in writing. Check with the HR office that your contract contains an explicit clause on the agreed annual percentage of smart working and on the day-tracking system. Many Ticino companies (banks, fiduciaries, pharmaceutical multinationals in Mendrisio, software houses in Lugano) have already adopted attendance tracking software that automatically distinguishes telework from on-site presence, but the ultimate responsibility remains shared: the worker must keep a parallel personal log, because in case of an audit by the Italian Revenue Agency or the Ticino Tax Division, your documentation will be requested first.

Useful Tools and Links

To properly plan telework management and calculate the overall economic impact, it is useful to start with a precise estimate of net pay, also considering possible savings on fuel, train passes, and time returned to your personal life. We suggest three complementary tools from our site:

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Frequently Asked Questions

How many smart working days can a cross-border worker do?: An Italian cross-border worker employed in Switzerland can perform up to 25% of annual working time as telework from their Italian home, equal to about 55 days out of 220 working days. The calculation is annual, not weekly or monthly: exceeding by even one day causes loss of frontaliere tax status for that tax period.
How does the 45% telework 2026 rule work?: The 45% threshold concerns the bilateral agreement between Switzerland and France, not the one between Italy and Switzerland. For Italian cross-border workers the limit remains 25% annually. Italian unions and employer associations are calling for alignment with 45% for competitiveness reasons, but no changes to the IT-CH Protocol are in force in 2026.
Cross-border worker telework taxation: what changes if I exceed 25%?: Exceeding 25% annually triggers concurrent taxation: Switzerland continues to tax income from work performed in Ticino, while Italy taxes the share corresponding to days worked in excess in Italy. Double taxation is neutralized by the tax credit, but the administrative burden increases significantly with a complete Italian tax return.
Does telework cause loss of cross-border worker status?: Only if the 25% annual threshold is exceeded. Staying within 55 telework days per year (out of 220 working days) keeps the cross-border worker status and the tax benefits of the Italy-Switzerland Protocol intact. The 45 non-return days for professional reasons (business trips, projects, training) are also compatible with the status, provided the two counts are not confused.
How to communicate cross-border telework to the employer?: It must be formalized in writing: ask the HR office for a contractual addendum that indicates the agreed annual smart working percentage and the day-tracking system. Also keep a parallel personal log (calendar or app) as proof in case of an audit by the Italian Revenue Agency or the Ticino Tax Division.