Cross Border Taxation Guide 2026 (cross-border guide)

Last updated: 22 April 2026

By Frontaliere Ticino Editorial Team

Cross-border worker taxation 2026: Italy-Switzerland system overview

The taxation of cross-border workers between Italy and Switzerland in 2026 operates under two distinct tax regimes, determined by the hiring date and municipality of residence. The system is governed by the New Tax Agreement signed on 23 December 2020 (RS 0.642.045.43, Italian law 83/2023), which entered into force on 17 July 2023 and significantly reshaped the rules compared to the 1974 agreement. In Canton Ticino alone, roughly 79,000 cross-border workers are affected (BFS/UST 2025 data), with average gross annual salaries between CHF 60,000 and CHF 90,000. Understanding your tax regime is essential to correctly calculate net pay, plan annual tax returns, and claim every eligible deduction.

Old-worker status requires work as a tax cross-border worker in Ticino, Graubünden or Valais between 31 December 2018 and 17 July 2023, residence in a municipality in the 20 km border zone and, in principle, daily return home. Swiss employment income remains taxable exclusively in Switzerland. The 2033 deadline ends the 40% compensation paid by Switzerland to Italy, not exclusive Swiss taxation. For new workers meeting the agreement’s residence and return requirements, Switzerland levies 80% of the ordinary withholding tax and Italy taxes the income with credit for Swiss tax. The 80% is not an allocation of income between countries. Residence outside the qualifying municipality zone does not automatically qualify for the reduced Swiss rate. Source: FTA agreement and FAQ.

The 2023 New Italy-Switzerland Agreement: what changed

The agreement entered into force on 17 July 2023 and applies from 1 January 2024. It introduces concurrent taxation and annual tax-information exchange for new workers while preserving exclusive Swiss taxation for eligible old workers. A G permit and tax status are distinct: the permit alone does not establish eligibility. Check the official municipality list, employment in the border region and the requirement to return home daily in principle. AFC / ESTV — FAQ.

The Supplementary Agreement of 6 June 2024 also regulates cross-border teleworking: up to 25% of working time may be spent from Italy without losing cross-border status and without changes to the applicable tax regime. Above this threshold, the employment relationship may be reclassified as performed in Italy, triggering exclusive Italian taxation. This flexibility is especially relevant for ICT, finance, and consulting sectors, where remote work is widespread. Swiss employers must monitor the 25% threshold and report it annually to authorities.

A practical example (simplified estimate): Marco, a software engineer hired in Lugano on 1 September 2023 with a CHF 84,000 gross salary, resident in Como, falls under the new cross-border workers regime. He pays about CHF 7,800 of Swiss withholding tax (80% of the ~11.5% ordinary rate) and in Italy declares the CHF 84,000 converted to EUR (~EUR 87,500 assuming an exchange rate of CHF 0.96 per EUR 1), then subtracts the 10,000 EUR exemption. On the residual EUR 77,500 taxable base, gross IRPEF under the 2026 brackets applied by the site's simulator (23-33-43%, Italian law 199/2025) is about EUR 25,500. The foreign tax credit recognises the Swiss tax paid (EUR 8,125) in proportion to the residual base (77,500 ÷ 87,500), i.e. about EUR 7,200. The Italian IRPEF balance is therefore about EUR 18,300, payable via F24 form. The estimate ignores deductible Swiss social contributions, which lower the taxable base, and the regional and municipal surcharges, which raise the tax: the actual balance depends on these items.

Avoiding double taxation

Double taxation occurs when the same income is taxed both in the country where it is earned (Switzerland) and in the country where the taxpayer resides (Italy). For Italian cross-border workers this risk is concrete: Switzerland applies withholding tax on employment income, while Italy — under the worldwide taxation principle — would also claim the right to tax the same income as a tax-resident individual. The Double Taxation Convention between Switzerland and Italy (DTA, signed 9 March 1976, now integrated by the 2023 New Agreement) solves this problem via two combined mechanisms: concurrent taxation with a foreign tax credit, and the EUR 10,000 exemption.

The foreign tax credit works as follows: Italian IRPEF owed on Swiss income is reduced by the Swiss withholding tax actually paid, up to a cap equal to the proportional IRPEF share on foreign income. Formula: Credit = Total gross IRPEF × (Swiss income ÷ Total income). The credit cannot exceed the tax actually paid in Switzerland. The EUR 10,000 exemption applies first: the first EUR 10,000 of Swiss income is exempt from IRPEF, and the tax credit computation occurs on the residual base. Common mistakes include applying the exemption to net instead of gross income, or computing the credit ignoring the foreign/total income ratio. New cross-border workers must always file an Italian return — unlike old cross-border workers.

Documents to retain: Swiss salary certificate (Lohnausweis), withholding tax receipts, Italian residence certificate, any TOU receipt from Switzerland. A specialised international tax advisor typically costs EUR 200-500 per year for a standard cross-border consultation, but prevents far heavier penalties from incorrect filings.

G permit vs B permit: tax implications

Choosing between the G permit (cross-border) and the B permit (resident) has profound tax implications beyond the simple income taxation. The G permit keeps Italian tax residency: the worker is taxed in Italy on worldwide income but benefits from the tax credit and exemption on Swiss earnings. The B permit transfers tax residency to Switzerland: exclusive Swiss taxation on employment and most other income, with exceptions for Italian-source real estate income (still taxed in Italy).

The fiscal break-even between the two permits depends on income, marital status, family composition, and deductible expenses. As a rule of thumb: below CHF 90,000 gross annually, the G permit usually wins thanks to the EUR 10,000 exemption and progressive Italian IRPEF; between CHF 90,000 and CHF 130,000 the choice depends on personal variables (spouse, children, rent, mortgage); above CHF 130,000 the B permit is typically advantageous thanks to less aggressive Swiss rates and the generous TOU (Ordinary Tax Return) allowing broad deductions. However, the B permit comes with extra costs: mandatory LAMal (CHF 270-560/month), Swiss rent 40-70% higher than Lombardy, loss of the health-insurance option, and loss of Italian primary-residence mortgage deductions.

Withholding tax rates Ticino 2026

Canton Ticino withholding tax rates for 2026 are organised into four main tables, published annually by the Tax Division of the Ticino Department of Finance and Economy. Table A applies to singles without children; Table B to singles with dependent children; Table C to married couples; Table H to single-parent households. For new cross-border workers, since 17 July 2023 the applied rate is 80% of the ordinary one. Rates are progressive: starting at ~5% for gross income below CHF 30,000, rising to 10-12% at CHF 60,000, 14-16% at CHF 90,000, and exceeding 18-20% above CHF 150,000. Full official tables are available on the DFE Ticino portal.

Tax deductions: maximising savings

Cross-border workers can claim meaningful deductions in both countries, but proactive action is required within strict deadlines. In Switzerland, the Ordinary Tax Return (TOU, formerly TDR) must be requested by 31 March of the year following the tax year. It allows deducting: third-pillar contributions (up to CHF 7,258/year in 2026 for LPP-affiliated workers), actual commuting costs (CHF 0.70/km or commuter pass, max CHF 3,000), professionally relevant continuing education (max CHF 12,000), complementary insurance premiums (max CHF 2,600 single/CHF 5,200 couple), unreimbursed medical expenses, documented alimony payments, and contributions to Swiss political parties.

In Italy, new cross-border workers can claim all standard 730/Redditi PF deductions: medical expenses (19% above EUR 129.11 deductible), primary-residence mortgage interest (19% up to EUR 4,000), building renovations 50% (up to EUR 96,000 per property), furniture bonus 50% (up to EUR 5,000), superbonus, education expenses (19% up to EUR 800 per child), supplementary pension contributions (up to EUR 5,300/year for Italian pension funds), charitable donations to ONLUS (19% up to EUR 30,000). A dependent spouse (income below EUR 2,840.51) grants EUR 800/year tax credit. Italian deductions and Swiss TOU cannot be cumulated for the same expense (e.g. pension contributions).

Special cases: telework, multi-canton, retirees

Cross-border teleworking is one of the most dynamic areas of cross-border taxation. Since 6 June 2024, the Italy-Switzerland Supplementary Agreement allows telework up to 25% of working time from Italy without changing cross-border tax status. This threshold is measured annually: a full-time worker (40h/week) can work up to 10h/week from Italy or accumulate up to 52 working days/year in smart working from Italy. Beyond 25%, the employment relationship risks being reclassified as performed in Italy, triggering exclusive Italian taxation and loss of the Swiss regime.

Retiree cross-border workers deserve particular attention. AVS/AI pensions paid by Switzerland to Italian residents are taxed exclusively in Italy as employment-like income (art. 19 Italy-Switzerland DTA), with full IRPEF and no 10,000 EUR exemption. LPP pensions (second pillar) are also taxed in Italy, but it is possible to opt for a lump-sum redemption with a 5% substitute tax in Switzerland plus Italian taxation at a favourable 12.5% substitute regime. Third-pillar (3a) lump-sum payments are taxed in Switzerland with reduced separate tax (~5-8%) and in Italy as self-employment income. Retirement planning requires specialist advice.

Common tax mistakes to avoid

Analysing audits by the Italian Revenue Agency over 2024-2026, we have identified the ten most frequent mistakes by new cross-border workers. Avoiding them can save EUR 500 to EUR 15,000 in penalties and interest. Top mistakes: (1) failing to file an Italian tax return as a new cross-border worker, thinking exempt like old cross-border workers — penalty 120-240% of tax due; (2) applying the EUR 10,000 exemption to net or CHF income instead of gross converted to EUR at the BCE mean rate; (3) computing the foreign tax credit without the proportional foreign/total income ratio; (4) missing the 31 March deadline to request TOU for third-pillar deductions; (5) failing to register with AIRE when moving on B permit; (6) underestimating taxation of foreign capital income (26% tax on Swiss financial yields, mandatory Quadro RW for foreign assets above EUR 15,000); (7) exceeding 25% telework from Italy without notifying the employer; (8) mis-filing Quadro CE (foreign tax credits); (9) failing to keep documentation for 5 years; (10) confusing gross and net Swiss tax in computations.

Advanced FAQ: questions from cross-border workers

Q1. Can I voluntarily opt for the new cross-border regime if hired before 2023? No, the transitional regime is mandatory for those who meet the criteria (hired before 17 July 2023, residing within 20 km). Only a new contract signed after 17 July 2023 automatically triggers the new regime.

Q2. If I retire in 2027, do I keep the old cross-border regime? No. The transitional regime ceases upon retirement or contract termination. AVS/AI and LPP pensions received in Italy are taxed differently under art. 19 of the Italy-Switzerland DTA.

Q3. Part-time 50% — how does taxation work? Reducing work to 50% does not change the tax regime. Withholding tax is proportional to actual income. Deductions (third pillar, transport) remain proportional to actual activity.

Q4. Can I deduct my Italian mortgage with a G permit? Yes. As an Italian tax resident you retain all standard IRPEF deductions: primary-residence mortgage interest (19% up to EUR 4,000), renovations 50%, furniture bonus, school expenses. Deductions are calculated on gross IRPEF before the foreign tax credit.

Q5. What if I change residence from Italy to Switzerland mid-year? A change of residence creates a "split year": until the transfer date, full Italian taxation as G frontaliere; from AIRE registration onwards, exclusive Swiss taxation as B permit holder. Two partial-year returns must be filed.

Q6. Is Swiss unemployment benefit taxable? Yes. Swiss unemployment (AC) paid to an Italian resident is taxed in Italy as employment-like income, without exemption. Swiss AC applies a reduced 5% withholding tax, creditable in Italy.

Q7. If I hold a Swiss bank account, must I declare it in Italy? Yes, mandatorily. Italian residents must file Quadro RW in Redditi PF for foreign assets (real estate, accounts, investments) whose average annual value exceeds EUR 15,000. Failure to declare: 3-15% penalty on undeclared assets.

Q8. Can I deduct Italian pension-fund contributions in Switzerland? No. TOU only allows deduction of Swiss third-pillar contributions or recognised Swiss pension funds. Italian pension funds are deductible only in Italy within IRPEF limits (max EUR 5,300/year).

Q9. How are bonuses and stock options taxed? Bonuses are treated as ordinary salary: subject to Swiss withholding tax and declared in Italy with credit and exemption. Stock options instead are taxed at exercise with complex rules (art. 51 para. 2 TUIR for grants, art. 15 DTA for employment income). Specialist advice recommended.

Old-worker status requires work as a tax cross-border worker in Ticino, Graubünden or Valais between 31 December 2018 and 17 July 2023, residence in a municipality in the 20 km border zone and, in principle, daily return home. Swiss employment income remains taxable exclusively in Switzerland. The 2033 deadline ends the 40% compensation paid by Switzerland to Italy, not exclusive Swiss taxation. Source: FTA agreement and FAQ.

Sources: Swiss Federal Tax Administration (AFC) · Italian Revenue Agency · CH-IT Agreement 23.12.2020 (RS 0.642.045.43) · Italian laws 83/2023, 213/2023 art. 1 para. 175 · Telework Supplementary Agreement 6.6.2024.