What digital data does the Revenue Agency analyse?

The Revenue Agency uses the analysis of electronic payments (credit cards, apps), geolocation data, energy consumption and online transactions. These elements are crossed to verify whether the taxpayer's consumption habits correspond to the declared tax residence, monitoring the actual presence on the national territory.

Which income does the €10,000 limit apply to?

Article 9’s transitional regime applies only to workers who meet the Agreement’s definition and worked in Graubünden, Ticino or Valais between 31 December 2018 and 17 July 2023; covered employment income is taxable exclusively in Switzerland. The ordinary regime applies in other cases, with Italian taxation and credit for Swiss tax where applicable. The €10,000 in Article 4 of Law 83/2023 is only the limit for income referred to in Article 1(175) of Law 147/2013, not a general allowance. [FTA factsheet](https://www.estv.admin.ch/dam/it/sd-web/Zbr5Jb-40aYm/int-laender-it-faktenblatt-faqs-it.pdf) · [Agreement, Article 9](https://www.fedlex.admin.ch/eli/cc/2023/410/en) · [Normattiva, Article 4](https://www.normattiva.it/atto/caricaDettaglioAtto?atto.articolo.numero=4&atto.codiceRedazionale=23G00087&atto.dataPubblicazioneGazzetta=2023-06-30&bloccoAggiornamentoBreadCrumb=true&classica=true&dataVigenza=09%2F09%2F2026&generaTabId=true&tipoDettaglio=singolavigenza&title=lbl.dettaglioAtto).

How is double taxation avoided?

Double taxation is avoided through the tax credit, which the taxpayer must indicate in the EC framework of the model 730 in Italy. Income tax is withheld at source in Switzerland, and Italy recognises the credit for taxes already paid, following the provisions of the Convention of 9 March 1976.

Verification of tax residence: the digital evidence of the ADE

By Marco Ferrari (editorial byline of the newsroom, AI-generated text) · Published on 29 July 2026 · Updated on 31 October 2026

Digital documents and computer in a Swiss office

How the Revenue Agency uses digital traces to verify the tax residence of taxpayers. Practical analysis and regulatory references.

Context

In a nutshell

The ADE analyzes digital traces to confirm tax residency.
Monitoring of electronic payments, geolocation and web data.
Need for documentary transparency to avoid disputes.

Key facts

What: Verification of tax residence through digital evidence.
When: Procedures in constant monitoring.
Where: Italy, with an impact on cross-border taxpayers.
Who: Revenue Agency (ADE).

The assessment of tax residence by the Revenue Agency (ADE) increasingly makes use of digital analysis tools. Today, technology makes it possible to cross streams of data that were difficult to trace in the past. The authorities' attention is focused on verifying the effective presence of the taxpayer on the national territory, comparing official declarations with digitally recorded consumption habits. This approach is part of the control strategies to prevent tax evasion and ensure the correct payment of taxes, in line with current regulations that define the criteria for tax residence. The traceability of payments and the use of connected devices offer assessment bodies a significant amount of information to validate or dispute the tax position declared by the citizen.

The role of digital data in control

The digital evidence collected includes credit card transactions,

Operational details

The analysis of tax residence requires special attention regarding income taxes. For workers, withholding tax is deducted in Switzerland, while Italy avoids double taxation through the tax credit within the CE 730 framework. It is essential to remember that the New Cross-Border Workers Agreement, signed on December 23, 2020, has been in force since January 1, 2024, with Italian ratification through Law 83 of June 13, 2023. For Article 9 of the Agreement, “old frontier workers” are people who met the tax requirements and worked in Graubünden, Ticino or Valais on 17 July 2023 or during the period from 31 December 2018 through 17 July 2023. Article 9 keeps covered employment income taxable exclusively at source in Switzerland; other workers follow the ordinary regime, with ordinary taxation in Italy, a credit for Swiss tax and Swiss withholding at 80% of the ordinary rates. The €10,000 figure in Article 4 of Italian Law No. 83/2023 is only the income limit referred to in Article 1(175) of Law No. 147/2013; it is not a general allowance for new frontier workers. Sources: ESTV factsheet (Italian) · Agreement, Art. 9 · Law No. 83/2023, Art. 4.

Comparison between tax and social security regimes

The Convention against double taxation between Italy and Switzerland, signed on March 9, 1976, remains the key normative pillar. Switzerland, not being an EU/EEA member, applies specific rules that taxpayers must be aware of. On the contribution side, the rates for employees in Switzerland include AVS/AI/IPG at 5.3% and AD/AC at 1.1% (with a maximum cap of 148,200 CHF). Additionally, LAINF varies between 0.7% and 1.5%, and LPP ranges from 7% to 18% depending on age group, starting from age 25. In Italy, IRPEF follows progressive brackets: 23% up to 28,000 euros, 33% between 28,001 and 50,000 euros, and 43% over 50,000 euros. It is crucial to monitor your salary calculator to understand the net impact of these deductions and maintain proper tax planning in case of audits, also using exchange rate comparison tools to manage income effectively. Caution when declaring income is the best defense against possible residence disputes.

Useful tools for your case

To verify your within/over 20 km tax scenario, use the net salary calculator and the tax return guide.

Key points

To properly manage their tax situation, individuals must adopt a rigorous documentation strategy. In case of an audit, taxpayers should be prepared to present evidence confirming their actual residence. This process involves systematically keeping bank statements, lease or property contracts, utility bills, and tax residence certificates issued by the relevant authorities. It is not only about fulfilling a requirement but about building a set of proofs that certify the absence of significant ties with Italian territory that could suggest a different tax residence from the one declared. Those working in Switzerland should ensure their situation aligns with the requirements of the New Border Workers Agreement, paying attention to the deadlines for filing taxes in Italy.

Practical procedures for the taxpayer

The procedure first involves verifying registration with the registry office and correctly managing the right of option for LAMal, the health insurance, which includes deductibles for adults between 300 and 2,500 CHF. It is essential to regularly consult the salary calculator to verify the accuracy of the withholding taxes applied at source, avoiding surprises during the annual declaration. If there are doubts about one's residence or how the 1976 Convention is applied, it is advisable to consult with professionals specialized in international taxation. Transparency with the Revenue Agency and maintaining clear documentation are key to navigating the complexities of the tax system smoothly. Keeping an updated record of activities, payments made, and official correspondence is a fundamental habit for every worker. To deepen understanding of tax calculation and management of gross and net income, it is recommended to use the salary calculator available on the portal.

Frequently Asked Questions

What digital data does the Revenue Agency analyse?: The Revenue Agency uses the analysis of electronic payments (credit cards, apps), geolocation data, energy consumption and online transactions. These elements are crossed to verify whether the taxpayer's consumption habits correspond to the declared tax residence, monitoring the actual presence on the national territory.
Which income does the €10,000 limit apply to?: Article 9’s transitional regime applies only to workers who meet the Agreement’s definition and worked in Graubünden, Ticino or Valais between 31 December 2018 and 17 July 2023; covered employment income is taxable exclusively in Switzerland. The ordinary regime applies in other cases, with Italian taxation and credit for Swiss tax where applicable. The €10,000 in Article 4 of Law 83/2023 is only the limit for income referred to in Article 1(175) of Law 147/2013, not a general allowance. FTA factsheet · Agreement, Article 9 · Normattiva, Article 4.
How is double taxation avoided?: Double taxation is avoided through the tax credit, which the taxpayer must indicate in the EC framework of the model 730 in Italy. Income tax is withheld at source in Switzerland, and Italy recognises the credit for taxes already paid, following the provisions of the Convention of 9 March 1976.