What is the difference between residing in Como and in Clivio if you have an IRPEF taxable income of 40,000 euros?

The difference is 80 euros net per year, since in Como the additional municipal rate is 0.8%, while in Clivio it is 0.6%.

How much annual savings do you get by choosing a municipality with a 0.6% rate instead of 0.8% for an income of 50,000 euros?

By choosing a municipality with a rate of 0.6% instead of 0.8% on a taxable income of 50,000 euros, the annual difference is 100 euros. Calculation: 50,000 × (0.008 – 0.006) = 50,000 × 0.002 = 100 euros. This savings is in addition to any differences in living and transport costs.

What is the effect of the €10,000 deductible on the municipal surcharge for a border worker with a taxable income of €30,000?

With the excess of 10,000 euros, the taxable amount for the additional amount is reduced. For a border crossing with taxable income of 30,000 euros, the net base becomes 20,000 euros. If the rate is 0.8%, the additional is 20,000 × 0.008 = 160 euros. If the rate is 0.6%, it is 120 euros.

When do I need to register my residence to benefit from the 2026 rate?

To benefit from the municipality's rate in 2026, the registry residence must be established by 31 December 2025. A change of residence made on January 2, 2026 will only take effect for fiscal year 2027. It is therefore advisable to complete the registration procedure by the end of the previous year.

How does the tax credit work for taxes paid in Switzerland?

The tax credit for taxes paid in Switzerland works as follows: Switzerland withholds 80% of the tax due. When income is declared in Italy, the amount of the Swiss tax is subtracted from the calculation of the personal income tax. The credit cannot exceed the Italian IRPEF; if the Swiss tax is higher, no additional credit is obtained.

IRPEF Surcharge: Where to Live to Pay Less Tax (cross-border guide)

Di Redazione Frontaliere Ticino · Published on 23 February 2026

Map of the border municipalities between Italy and Switzerland for cross-border workers' tax residence choice

The map of 2026 IRPEF surcharges in border municipalities. Differences up to €500 per year on your net salary. Here's where it's best to reside.

Context

TL;DR

IRPEF tax varies
Municipal surcharge
Residency impacts

Key facts

Tax rate: 0.8% maximum allowed
Tax-free: €10,000 allowance
Residency deadline: December 31st of previous year
Withholding tax: 80% of Swiss tax
IRPEF calculation: Gross IRPEF minus credit for Swiss taxes
Municipal surcharge: Calculated on net Italian taxable base
Example savings: €80 net per year between Como and Clivio

Residency is not just a matter of address. For a cross-border worker, especially those under the new tax agreement, it's a strategic financial decision that directly impacts their net paycheck. The key factor is the municipal surcharge on IRPEF (Italian personal income tax), a tax that varies significantly from one municipality to another and can result in a difference of hundreds of euros at the end of the year. With the new tax regime in effect, so-called "new cross-border workers" (hired after July 17, 2023) are subject to concurrent taxation: Switzerland withholds 80% of the tax at source, while Italy taxes the income at its own IRPEF rates, providing a tax credit for what has already been paid in Switzerland and applying a €10,000 tax-free allowance.

It is on this Italian taxable base that the municipal surcharge is applied. And the differences are by no means negligible. Taking up residence in a municipality with a rate of 0.8% (the maximum allowed) versus one that applies 0.6% can mean concrete savings. Many of the main border municipalities, such as Como and Varese, apply the maximum rate.

📊 Practical Example: 2026 Rates Compared A comparison of some border municipalities (indicative rates based on the latest available data):

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Operational details

How the Calculation Works for New Cross-Border Workers

For cross-border workers operating under the new agreement, the mechanism is more complex than in the past. The employment income earned in Switzerland is first taxed in Canton Ticino, with a withholding tax that cannot exceed 80% of what would be due under ordinary tax tables. Subsequently, the worker must declare the same income in Italy. Here, the Italian Revenue Agency calculates the gross IRPEF according to national tax brackets. From this tax, the credit for taxes paid in Switzerland is deducted, and the €10,000 allowance is applied to the taxable income.

The municipal surcharge is calculated on the net Italian taxable base. The formula is simple: (Taxable IRPEF Income) x (Municipal Rate). The rate is decided independently by each municipality and can range from zero to a maximum of 0.8%. Some municipalities may provide exemption thresholds for lower incomes, but this is rare in border areas, where the taxable base of cross-border workers is on average higher.

"Choosing a municipality with a 0.6% rate instead of 0.8% may seem minor, but on a taxable income of €30,000, it means an annual saving of €60. On higher incomes and over a 20-year working horizon, the difference becomes substantial and can exceed €2,000," explains a tax consultant specializing in cross-border matters.

⚠️ Timing is crucial: To benefit from a specific municipality's rate for a tax year, you must have established your official residence there by December 31st of the previous year. A change of residence made on January 2, 2026, for example, will only have a fiscal effect starting from the 2027 tax period.

Key points

Residency Strategies: More Than Just Taxes

The municipal surcharge rate is an objective and fundamental piece of data, but it shouldn't be the sole criterion for choosing where to live. An effective residency strategy must consider an ecosystem of factors that impact quality of life and the overall family budget. A municipality with a slightly higher rate might, for example, offer better services, more efficient schools, or lower rental costs that more than offset the higher tax burden.

💡 Checklist for Choosing a Municipality:

Municipal IRPEF Surcharge Rate: The starting point. Check the current rate on the Ministry of Economy and Finance (MEF) website or directly with the municipal tax office.
Cost of Living and Real Estate Market: Lower rent can generate far greater savings than a favorable tax rate.
Commuting Distance: Calculate transportation costs (fuel, car wear and tear, passes) and travel time from major border crossings like Brogeda, Gaggiolo, or Ponte Tresa. Time is money.
Municipal Services: Evaluate the quality of schools, kindergartens, public transport, and healthcare services.

Your choice of residence directly impacts your monthly net salary. Before making a decision, it's crucial to have a clear picture of your income and expenses. For a precise estimate of how the IRPEF surcharge and other factors will affect your paycheck, using simulation tools is advisable. Try our Net Salary Calculator to compare different scenarios and make the most advantageous choice for you and your family.

(Source: Frontaliere Ticino Editorial Staff, analysis of data from the Ministry of Economy and Finance for 2026)

Frequently Asked Questions

What is the difference between residing in Como and in Clivio if you have an IRPEF taxable income of 40,000 euros?: The difference is 80 euros net per year, since in Como the additional municipal rate is 0.8%, while in Clivio it is 0.6%.
How much annual savings do you get by choosing a municipality with a 0.6% rate instead of 0.8% for an income of 50,000 euros?: By choosing a municipality with a rate of 0.6% instead of 0.8% on a taxable income of 50,000 euros, the annual difference is 100 euros. Calculation: 50,000 × (0.008 – 0.006) = 50,000 × 0.002 = 100 euros. This savings is in addition to any differences in living and transport costs.
What is the effect of the €10,000 deductible on the municipal surcharge for a border worker with a taxable income of €30,000?: With the excess of 10,000 euros, the taxable amount for the additional amount is reduced. For a border crossing with taxable income of 30,000 euros, the net base becomes 20,000 euros. If the rate is 0.8%, the additional is 20,000 × 0.008 = 160 euros. If the rate is 0.6%, it is 120 euros.
When do I need to register my residence to benefit from the 2026 rate?: To benefit from the municipality's rate in 2026, the registry residence must be established by 31 December 2025. A change of residence made on January 2, 2026 will only take effect for fiscal year 2027. It is therefore advisable to complete the registration procedure by the end of the previous year.
How does the tax credit work for taxes paid in Switzerland?: The tax credit for taxes paid in Switzerland works as follows: Switzerland withholds 80% of the tax due. When income is declared in Italy, the amount of the Swiss tax is subtracted from the calculation of the personal income tax. The credit cannot exceed the Italian IRPEF; if the Swiss tax is higher, no additional credit is obtained.