Tax Credit for Double Taxation (cross-border guide)
Calculate your tax credit to avoid Switzerland-Italy double taxation and understand foreign-tax relief for your cross-border return.
By Frontaliere Ticino Editorial Team
The tax credit calculator determines the foreign tax credit (Art. 165 TUIR) applicable in the Italian tax return, avoiding double taxation on Swiss employment income.
Under the 2024 New Agreement, Italy taxes new cross-border workers' income with an EUR 10,000 franchise and recognises a credit for Swiss withholding tax paid, up to the amount of Italian tax due.
The Art. 165 TUIR mechanism works by allowing Italian-resident cross-border workers to offset Swiss withholding tax against their Italian liability, preventing double taxation. The calculator shows the exact recoverable amount and distinguishes between old agreement workers with full credit and new agreement workers subject to the EUR 10,000 franchise.
This page is part of Frontaliere Ticino, the reference platform for cross-border workers between Switzerland (Canton Ticino) and Italy. Find practical tools, updated data, and verified information.
Content is designed to help cross-border workers make informed decisions about taxation, pensions, transportation, cost of living, and administrative procedures.
All tools and data are updated for the 2026 fiscal year, reflecting the New Bilateral Tax Agreement between Switzerland and Italy, current AVS/LPP contribution rates, and Canton Ticino withholding tax tables.
The platform covers the complete cross-border worker lifecycle: from obtaining your G or B permit and opening a Swiss bank account, to filing your annual tax returns in both countries, planning your AVS and LPP pension, and comparing the cost of living on both sides of the border.
Frequently asked questions
- How does the tax credit for cross-border workers work?
- The tax credit avoids double taxation: taxes paid in Switzerland (withholding tax) are deducted from Italian IRPEF in Section CE of the tax return. The credit is limited to the Italian tax share corresponding to the foreign income. It is essential to keep the Swiss salary certificate (Lohnausweis) as proof of the withholding tax paid.
- What is the difference in tax credit between old and new cross-border workers?
- An eligible old worker owes no Italian IRPEF on Swiss salary covered by Article 9, so no credit is used for that income. This does not remove possible Italian obligations for other income or asset reporting. A new tax cross-border worker declares the income in Italy and can credit Swiss tax within the applicable credit limits; 80% refers to ordinary Swiss withholding tax, not a general cap on the Italian credit. https://www.estv.admin.ch/dam/it/sd-web/Zbr5Jb-40aYm/int-laender-it-faktenblatt-faqs-it.pdf
- In which section of the tax return is the tax credit declared?
- The tax credit for taxes paid abroad is declared in Section CE (Quadro CE) of the Modello Redditi PF (Individual Income Tax Return). You report the income produced abroad and the definitive foreign tax paid.
- Can the tax credit exceed the IRPEF due?
- No, the tax credit cannot exceed the IRPEF share proportional to the foreign income. If the Swiss tax is higher than the IRPEF share, the difference is not refundable but can be carried forward in the next 8 tax returns.
- Do I need to convert the Swiss tax from CHF to EUR?
- Yes, the withholding tax paid in CHF must be converted to EUR using the annual average exchange rate published by the Agenzia delle Entrate. For 2025 the average of ECB reference rates is about 0.937 francs per euro, or about 1.067 euro per franc.